Study of Impact Shocks in Fencing

Study of Impact Shocks in Fencing Abstract Fencing is a high intensity sport involving dynamic movements which expose the musculoskeletal system to high impact forces that may lead to overuse injuries. One of the most frequently used high impact movements is the lunge. With many different types of sports footwear available providing different levels of midsole cushioning, selecting the most suitable for a sport may be a factor in preventing the onset of injury. The aim of this study was to investigate the magnitudes of the transient axial impact shock experienced at the tibia between traditional fencing shoes and standard athletic footwear during the impact phase of the fencing lunge. Peak tibial shock was measured in 19 male fencers in 4 different footwear conditions using an accelerometer placed on the distal aspect of the tibia. The standard footwear resulted in significant reductions in peak impact shock in comparison to the traditional fencing shoes. Thus the reduction in impact shock found suggests that running or squas h specific footwear may reduce overuse injury occurrence. However, despite this, the majority of participants indicated that they preferred fencing specific footwear for fencing. The results of this study suggest that there is justification for a re-design of fencing shoes. Introduction Competitive fencing (foil, sabre and epee) has experienced a rapid increase in participation rates during the past decade (Harmer, 2008). The sport places unique demands on the athlete and is characterised by asymmetry and the incidence of rapid motions which have the potential to generate large forces (Geil, 2002). In particular, the frequently used lunge which is the basis of most attacking motions is a high impact movement (Kopetka Stewart, 2005). The expansion in participation combined with the biomechanical demands of the sport has led to enhanced awareness of the incidence of injuries associated with fencing. Nonetheless, prospective, epidemiological studies of the incidence of repetitive strain and overuse injuries in fencing are scarce. As a result, it is difficult to draw dependable conclusions regarding the etiology of fencing injuries and their prevention based on impartial information (Roi Bianchedi, 2008). However existing studies indicate that overuse injuries account for approximately 30% of injuries that interfere with training (Carter et al., 1993). The majority of injuries are confined to the lower extremities (e.g., stress fractures, impingement enthesopathies of the patellar tendon and tibia and plantar fascia) associated with fencing (Harmer, 2008, Wild et al., 2001; Zemper Harmer, 1996) characteristic of dynamic activities involving high velocity change in momentum actions (Harmer, 2008). No apparent data has been published providing information regarding the total number of lunges executed during a competitive bout. However, Roi and Bianchedi (2008) suggest that there are anywhere between 66 and 210 attacks (depending on the weapon) during a competition, which given the lunges function as the most common attacking mechanism, it appears that fencers will be regularly subjected to the impact forces imposed by the lunge. One of the characteristics of the foot impacting the surface during a lunge is a rapid change in velocity of the foot and this velocity reaches zero upon foot placement in a short period of time (Whittle, 1999). This impact leads to the transmission of an axial transient shock wave through the body and carries with it the potential for injury. It is important to recognise that loading is necessary for maintenance of cartilage, bone, and muscle health (Stone, 1988). An optimal loading window for tissue strength can be characterized by frequent impacts of certain magnitude, duration, and frequency. Movements beyond the optimal loading window can lead to the breakdown of body tissue and overuse injuries (Hardin et al., 2003). The magnitude of the impact shock is commonly measured using accelerometers. Accelerometers are traditionally placed onto the skin overlying the tibia to quantify the transient impact shockwave during motion. Despite the consensus that soft tissue interferes with the acceleration recording of underlying bone, the utilization of skin mounted devices is considered appropriate provided they are lightweight and rigidly attached to the overlying skin (Shorten and Windslow, 1992). This method has been used to examine the cushioning properties of athletic footwear (Lake Greenhalgh, 2005) and better differentiates between impact conditions compared to data acquired using a force platform (Lafortune Hennig, 1992). The high impact nature of the lunge implies that the lower extremities may be at risk from overuse injuries. To date there is no information available regarding the potentially detrimental effect of the impact accelerations experienced during this movement. However, epidemiological studies suggest that a relationship exists between the magnitude of the transient shockwave and the etiology of a number of lower extremity overuse injuries (Nigg Segesser, 1992). Therefore with a significant number of lunges being undertaken by a fencer and the potential connection between the magnitude of the impact shockwave and the incidence of overuse injuries makes it important to investigate the shock attenuation properties of fencing footwear. The 1992 U.S Fencing Association review of the factors that may contribute to fencing injuries indicates that of the three primary areas for prevention, deficient equipment and facilities may be responsible for as many as 28% of the injuries associated with fencing, with ineffective footwear forming a significant component (Carter et al., 1993). The review noted problems with fencing shoes citing inadequate cushioning as well as the lack of footwear designs that could shield against the high impact nature of the sport, particularly lunging. To reduce injury, Zemper and Harmer (1996) have suggested a redesign of fencing shoes. The primary function of athletic footwear as described by Stacoff et al., (1988) is to provide shock attenuation. The properties of athletic footwear have been linked to the prevention of overuse injuries. With many different types of sports footwear available providing different levels of midsole cushioning, selecting the most suitable for a sport can be vital in preventing the onset of injury. Fencing equipment retailers in the UK offer very few options for specific footwear, with only 2 major brands on offer (Adidas and Hi Tec). It also appears that the fencing shoe has been more specifically designed for the function of the trail foot to enable good grip on the piste as well as maximising the life span of the shoe if dragging the back foot, which is common in fencing. The limited availability of specific shock attenuating footwear to the fencer may predispose fencers to overuse injuries. The majority of studies analyzing the influence of different footwear conditions on impact kinetics have focused on running. Therefore, the aim of the present study was twofold. First, to assess the magnitude of the peak axial tibial transient accelerations associated with the lunge in fencing to provide practitioners with information regarding the potential causes of injury. Secondly, to compare two specific fencing shoes with two standard sports shoes (running and squash) with regards to their shock attenuating properties during the lunge movement. In particular, it was predicted that peak axial transient accelerations were lower in shoes which have been particularly developed for shock absorbing qualities (running and squash shoes) in comparison to fencing shoes during the stance phase of the fencing lunge. Methods Participants Nineteen male (17 right handed and 2 left handed) competitive fencers with a minimum of 2 years experience (Age 25.6 + 8.3 years; Height 1.78 + 0.5 m; Weight 76.8 + 9.0 kg) comprising a mixture of the foil (n=2), epee (n=15) and sabre (n=1) disciplines, volunteered to take part in this study. All were injury free at the time of data collection and completed an informed consent form. The procedure was approved by a university ethical board. Materials Each participant was fitted with four pairs of shoes for the study. The shoes were the same for each participant; they differed in size only (sizes 9 and 10 mens UK sizes) and consisted of a conventional running shoe (Saucony Grid forum), squash shoe (Hi-Tec squash indoor) and fencing shoes (Hi-Tec blade) and (Adidas en guard). A tri-axial (Biometircs ACL 300) accelerometer sampling at 1000Hz was utilized to measure axial accelerations at the tibia. The device was mounted on a piece of lightweight carbon-fibre material. The combined weight of the accelerometer and mounting instrument was 9g. The voltage sensitivity of the signal was set to 100mV/g, allowing adequate sensitivity with a measurement range of  ± 100 g. The device was attached securely to leading leg on the distal anterio-medial aspect of the shank 8 cm above the medial maleolus in alignment with its longitudinal axis. This location was selected as the boniest prominence of the distal tibia in accordance with the Nokes et al., (1984) conclusions to improve the mechanical coupling of the accelerometer mounting to the tibia and reduce artefact due to interposing soft-tissue. The accelerometer was positioned so that acceleration was measured in the direction up the tibia (Figure 1). Strong adhesive tape was placed over the device and the lower leg to avoid overestimating the peak positive acceleration due to tissue artefact. The device was attached as close to the tibia as possible, the skin on overlying the bone itself was stretched thus ensuring a more rigid coupling between accelerometer and tibia. Furthermore, adhesive tape was positioned over the device itself to ensure it was maintained in a fixed position along the longitudinal axis of the tibia. The acceleration signal was sent to a Biometrics data logger with a 2 GB memory card. The data logger was fastened securely to a lightweight backpack to reduce movement of the device during trials. Procedure The fencers completed a suitable warm-up and were allowed two minutes to familiarize themselves with the experimental protocol and footwear condition prior to the commencement of data collection. They were then required to complete ten lunges hitting a dummy with their weapon in each footwear condition whilst returning to a starting point (pre-determined by each participant prior to the commencement of data capture) following each trial to control lunge distance. Each trial was comprised of a lunge where contact between the sword and dummy defined a successful outcome. The starting point for the movement was adjusted and maintained. The order in which the different footwear conditions were worn was randomized. Upon conclusion of the data collection participants were asked to subjectively indicate which shoe they preferred for fencing. Kinetic data was quantified/processed using Biometrics data-log software. The stance phase of each trial was acquired from each accelerometer signal for analysis. Peak positive axial tibial acceleration was defined as the highest positive acceleration peak measured during the stance phase after a 60Hz 1st order low pass filter had been implemented in accordance with the Lake and Greenhalgh (2005) recommendations. The mean values of the footfalls per participant/condition for the axial component of the acceleration signal was quantified and used for statistical analysis. Descriptive statistics were calculated for each variable including means and standard deviations. Differences between footwear conditions were examined via a within subjects repeated measures analysis of variance with significance accepted at the p Results A statistical power analysis of pilot data was conducted in order to reduce the likelihood of a type II error and determine the minimum number of participants needed for this investigation. It was found that the sample size was sufficient to provide more than 80% of statistical power in the experimental measure. Figure 2 provides the mean and standard deviations for the peak tibial accelerations for the four different shoe types. The Mauchlys sphericity assumption was violated and as such the degrees of freedom of the F statistic was adjusted via the Greenhouse Geisser correction. The Shapiro-Wilk statistic for each footwear condition confirmed that the data was normally distributed. The analysis of variance was significant (F (1.97, 35.52) = 16.31; P Discussion The aim of this study was to determine the differences in the magnitude of the transient acceleration between traditional fencing shoes and standard athletic footwear during the impact phase of the fencing lunge. The results of this study support our hypothesis, in that the magnitudes of the axial impact shockwaves were significantly lower in both the running and squash shoes compared to the traditional fencing footwear. The transient shockwave is linked to the development of a variety of overuse injuries (Whittle, 1999). It is essential to acknowledge the link between the magnitude of these forces and overuse injuries, as the frequency of these conditions can be reduced by attenuating the impact magnitude (Whittle, 1999). Therefore the significant reduction in impact shock found would suggest that running/squash footwear may assist in the reduction of overuse injury occurrence. Interestingly, despite the higher impact magnitude and concerns regarding the potential development of overuse injuries, the majority of participants indicated that they preferred fencing specific footwear for fencing. This finding agrees with those of Geil (2002) who hypothesized that this finding centred on plantar sensory proprioceptive mechanisms, whereby the feel of the fencing piste underneath the foot is reduced in shoes that offer a high degree of midsole cushioning. Geil (2002) suggested that footwear may influence fencing performance. They noted that increased midsole cushioning and travel of the foot during compression may lead to slower motion of the feet, which in turn could contribute to diminished velocity of the weapon hand, reducing the overall execution quality of the movement itself. Based on these findings it appears that midsole cushioning properties should play only a partial role in the design characteristics of an effective fencing shoe. Fencing involves a number of movement strategies in addition to the lunge, and as such shoe designs must cater to this. Fencers like most athletes require sure footing during competition; as such footwear designs must deliver adequate traction to provide stability during lunging, attacking and retreating motions. Furthermore, the medial forefoot of the trail shoe is an area traditionally subjected to high abrasion forces and thus heavy wear. Manufacturers should therefore focus attention on developing more resistant materials for this purpose to prolong the lifespan of the shoe. Whilst shock attenuation is the primary function of midsole cushioning, the elastic energy stored and recovered by cushioning systems has been proposed as a mechanism by which the oxygen cost of movement can be reduced. Given the aerobic demands the sport of fencing places on the athlete (Roi Bianchedi, 2008) additional research should focus on this factor as it may serve to slow the onset of fatigue and improve performance. The results of this study however, suggest that there is some justification for the Zemper and Harmer (1996) recommendations regarding the re-design of fencing shoes due to the demonstrated high transient impact forces on the front foot during the lunge. The primary design dilemma facing footwear manufacturers is to include features that would serve to attenuate the large impact forces and help reduce overuse injuries. At the same time, the design characteristics should also provide the fencer with an adequate feel for the fencing piste beneath the foot. The severe angle between foot-segment and ground on initial contact is also significant when designing the shoe. The shoe cushioning system must therefore provide protection in the extreme rear of the heel, an area not normally associated with consistent high impact forces in other sports. The obvious asymmetry of the sport presents a challenge to footwear manufacturers and arguments can be made for the development of asymmetrical footwear designs. Several different surfaces in fencing are used. Surface stiffness can have a significant influence on the magnitude of the impact shock during landing (Kim et al., 1994). This study was conducted during training sessions on a training surface as opposed to a traditional piste used during competition thus the results obtained may not adequately represent actual competition. During competition a hard floor can be used, as well as a metallic piste (either a cloth placed over the hard floor or a hard metallic piste). Future research should therefore concentrate on the magnitude of the impact shock during competition on a true fencing piste. Limitations Accelerometry is a complicated approach and methodological problems can affect the efficacy of collected data (Lake and Greenhalgh 2005). The magnitude of the signal obtained from the accelerometer is dependent on the mounting interaction, making cross study comparisons difficult. Soft tissue artefact can also influence the acceleration recording of underlying bone (Light et al., 1980). Attaching the device directly to bone represents the most accurate method of measuring impact shock and further work is necessary to determine the efficacy of the less traumatic skin mounting technique. The device signal is also reliant on the centripetal acceleration due to angular motion of the shank in the sagittal plane during ground contact (Lafortune and Hennig 1991). Lake and Greenhalgh (2005) noted that despite the application of a distally mounted device, correction for angular motion may still be necessary. Further research should be conducted to investigate the necessary signal corrections for angular motion. Another potential limitation/restriction of this study is that the results obtained are entirely specific to the footwear and ground surface conditions, any variation in these parameters would most likely cause changes to the participants fencing kinetics/kinematics. In addition this study analyzed the lunge motion only. The lunge represents a high impact motion; however there are other movements of lower intensity which may still be important in terms of the development of overuse injuries. Therefore, additional research is necessary regarding the influence of footwear on the magnitude of the transient shockwave during different fencing movements before appropriate prescriptions of fencing footwear can be made. References Carter, C., Heil, J., and Zemper E. (1993). What hurts and why Data from the 1992 USFA Fencing Injury Survey shows some common culprits. American Fencing. 43, p 16-17. Geil, M.D. (2002). The Role of Footwear on Kinematics and Plantar Foot Pressure in Fencing. Journal of Applied Biomechanics, 18, p 155-162. Harmer, P.A. (2008). Getting to the point: injury patterns and medical care in competitive fencing. Current Sports Medicine Reports. 7, 303-307. Kim, W., Voloshin, A.S., and Johnson S.H. (1994). Modelling of the heel strike transients during running. Human Movement Science, 13, 221-244. Kopetka, B., and Stewart, S.L. (2005).The kinematic determinants of speed in the fencing lunge. (Part 1). Journal of Sports Sciences, 2, 105. Lafortune, M., and Hennig, E. (1991). Contribution of angular motion and gravity to tibial acceleration. Medicine and Science in Sports and Exercise, 23, 360-363. Lafortune, M. A., Hennig, E. M. (1992). Cushioning properties of footwear during walking: accelerometer and force platform measurements. Clinical Biomechanics, 7, 181-184. Lake, M.J. (2000). Determining the protective function of sports footwear. Ergonomics, 43, 1610-1621. Lake, M.J., and Greenhalgh, A. (2005). Impact shock measurements during running correction for angular velocity of the shank is necessary. Proceedings of the 7th Symposium on Footwear Biomechanics. Cleveland, Ohio, USA. Nigg, B.M., Segesser, B. (1992). Biomechanical and orthopaedic concepts in sport shoe construction. Medicine and Science in Sports and Exercise, 24, 595-602. Nokes, L., Fairclough, J.A., Mintowt-Czyz, W.J., Mackie, I., and Williams, J., (1984). Vibrational analysis of human tibia: The effect of soft tissue on the output from skin mounted accelerometers. Journal of Biomedical Engineering, 6, 223-226. Roi, G.S., and Bianchedi, D. (2008). The Science of Fencing Implications for Performance and Injury Prevention. Sports Medicine, 38, 465-481. Shorten, M.R., and Winslow, D.S. (1992). Spectral Analysis of Impact Shock During Running. International Journal of Sports Biomechanics, 8, 288-304. Stacoff, A., Denoth, J., Kaelin, X., and Stuessi, E. (1988). Running injuries and shoe construction: some possible relationships. International Journal of Sport Biomechanics 4, 342-357. Whittle, M.W. (1999). The generation and attenuation of transient forces beneath the foot; a review. Gait and Posture, 10, 264-275. Wild, AM., Jaeger, C., Poehl, C., Werner, A., Raab, P., and Krauspe, R. (2001). Morbidity profile of high performance fencers. Sportverletz Sportschaden, 15, 59-61. Zemper, E.D., Harmer, P.A. (1996). Fencing. In D.J. Calne, C.G. Caine, K.J. Lindner (ed.), Epidemiology of Sports Injuries (pp 186-195). Champaign, IL Human Kinetics.

Tour de France Drug Abuse Essay -- Substance Abuse Essays

The question of drug use among athletes in what was previously considered by the unknowing public to be a rather pristine sport, cycling, is important in that it will affect all future Tours and will place them and the athletes under scrutiny. To begin with, in Europe until the 1998 scandal occurred, despite a few exceptions, cycling was considered a drug free sport. The 1998 drug scandal tarnished the Tour de France and the reputation and image of other sports. The media response to the scandal took differing positions on what should be done next to clean up cycling. The scandal also affected advertisements, sales, and without question the 1999 Tour and Lance Armstrong. Since even the most naà ¯ve fan no longer trusts the cyclists, drug-testing procedures have been instituted. Also, the question now arises regarding medications used by seriously ill cyclists. Certainly, future Tours will be significantly affected. The Union Cycliste Internationale and other sports officials are left with several burning questions; do they seek a better testing system? Clearly, they must protect athletes and the image of sports even though it is costly. Do they perform uniform versus random drug tests? Both are necessary to keep athletes and trainers accountable. In fact, the 1999 Tour promoted both forms of testing (Fife 208). If they do random tests, how do they enforce them? On this point, committees and sports federations are still debating. For years cycling, a grueling, yet glamorous sport in Europe, has been fighting drug use and abuse. Despite a few exceptions, cycling had the reputation, in Europe and in France, of being a clean, pure sport, compared to others, until the 1998 scandal occurred. The question of drug use among athletes in what was previously considered by the unknowing public to be a rather pristine sport, cycling, is important in that it will affect all future Tours and will place them and the athletes under scrutiny. A Clean Reputation: The History of Drugs in the â€Å"Tour de France† In 1967, Tommy Simpson, a British cyclist, died during the Tour de France because of the amphetamines that he took. Succeeding years brought embarrassments: In 1978, the Belgian Michel Pollentier was suspended while leading the Tour de France after he was caught concealing a clean urine sample to trick testers. Furthermore, in 1988, the Spaniard Pedro Delgado won the T... ...cess Story: Tour de Lance; Armstrong’s miraculous comeback from cancer to a Tour victory is worthy of an exclamation point, not a question mark.† The Los Angeles Times; Los Angeles, Calif.; 26 Jul. 1999: 1. Lemonick, Michael D. â€Å"Le Tour des drugs.† Time; New York; Aug 10, 1998: 76. MacAuley, Domhnall. â€Å"Drugs in Sport.† BMJ: British Medical Journal, 313.7051, 7/27/96, 211. Online. EBSCOhost. 16 Nov. 1999. http://www.EBSCOhost.com. Neff, Craig. â€Å"Drug sweep.† Sports Illustrated; New York, 9 Aug. 1999: 71 Pelkey, Charles ed. â€Å"Etxebarria takes Pau; Armstrong answers drug charge.† Velo-News, 21 July 1999. Phillips, Ian. â€Å"Armstrong Extends Tour Lead U.S. Star Bristles at French Media’s Drug Innuendos.† Seattle Post- Intelligencer; Seattle, Wash.; 15 Jul. 1999: E2. Velo-News. The sensational 1998 Tour de France: Conquests and Crisis. Boulder, Colorado: VeloPress, December, 1998. â€Å"Virenque admits to seeking drugs.† Velo-News Interactive. Velo-News; 11 May 1999. â€Å"Virenque released after admission.† Velo-News Interactive. Velo-News, 11 May 1999. Wilson, Stephen. â€Å"Doping Incidents Shake Sports from Swimming to Track & Field.† Seattle Post- Intelligencer, Seattle, Wash.,.1 Aug. 1998: E6.

Review of Kelly and Kulman’s Article Kid Power

The article chosen for review is â€Å"Kid Power† by Katy Kelly and Linda Kulman, U. S. News ; World Report. It was posted on September 5, 2004. The article discusses the psychology and marketing that is accomplished by major companies. Advertising companies spend over $15 billion a year telling kids what is hot and what they need to buy. Kids are surrounded with carefully researched messages and marketing telling them what to do.The parenting style has become more flexible and less authoritarian in the last 25 years. All this tiny consumers in United States will recognize logos at the age of 18 months and by 2 children will ask products by brand name. It should be noted that a child will watch 40,000 commercials every year and some parents reported that the baby’s first words was not â€Å"mama† or â€Å"dada† but â€Å"Coke†. United States with only 4. 5 percent of the population buys 45 percent of the global toy production.American kids will get an average of 70 new toys a year. Kids will influence the family decision buying power of parent by 670 billion worth of purchases, small items such as which snacks to buy and large items as a SUV for the family trips with the kids. If we compare the military budget in United States is 418 billion, much smaller than the kids buying power. There is a strong opposition to this barrage of advertising by many fronts.That is why marketers count on kids to nag parents to the point of purchase. The American Psychological Association added its voice to that of the American Academy of Pediatrics is reporting that advertising is directed toward children and is deceptive and exploits children under age 8. Also, the APA says that before the age of 4 or 5, kids can not distinguish between a show and a commercial. In the future most likely we will see legislation to curve the limit on advertising to children.

post test essays

post test essays After the television commercial campaigns, advertisers must turn to another kind of researches in order to know whether the ad performs well in the competing category and competing ads. This kind of researches after the campaign is called post-testing. Here we will explain the procedures through the post-test research of Danone biscuits done by Millward Brown in Shanghai. We will focus our attention to one of its sub brand: Tiki which had experienced a renovation in its product. This research adopted the face to face interviewing at home method. The researchers chose their target group as males or females between 18 to 54 years old who have bought any biscuits in last 3 months. The research period is from R5 June 11 to July 8 and R6 from July 9 to August 5. In this period, they realized 64 interviews per week. 1. A general overview of TVC input. This stage is for the researchers to have a global insight in the biscuit market in the recent 20 months. Here we find that Tiki ¡s product, after the renovation, was launched to the market in May 2001. The weighted GRPs reach 284 and it is above the average 250. Firstly, compared to Danone High Calcium ¡s  ¡Sunflower ¡ and Tuc ¡s re-edited commercial  ¡Celebrity ¡, the  ¡Butterfly ¡ for Tiki is weak in aided, unaided awareness and the ad story recall score is not good enough. The awareness of Butterfly is much inferior to those two ads, especially in the second month, whereas the other two increase their awareness by 6%-7%, Butterfly reduces by 7%. In the ad story recall, it does not have a good performance either. Maybe the difference rests on the short exposure of ads and people need a period of adaptation to accept the new product and new ads, for it is measured in the recent two months whereas the other two. Secondly, the researchers try to know exactly which parts of the ...

Accounting is math essays

Accounting is math essays I believe that both math and accounting knowledge is strictly necessary in our everyday lives. The knowledge we gain by taking these courses gives us the sense of understanding over the financial transactions we make in our life. We use math and accounting in a variety of situations. These include transactions we make by money and credit cards. Also, we use math and accounting to analyze situations when we drive, talk, and play. Comparing these two courses, we see a lot of similarities. Accounting is the formal way of doing math. We do math to calculate transactions that deal with numbers. Accounting is the way we analyze and set up those numbers so that we can see a balance between transactions. Using basic mathematical procedures, adding, subtracting, multiplying, and dividing lets us set the accounting principles. So in life, math is needed to balance budgets in accounting. When we look at a credit card statement, we see group of numbers that are added, divided, subtracted and multiplied. So, math is used to calculate our payment needed and accounting is used to balance our due or statement. By using math, the products or services we charge are added together to calculate the money we owe. Then by using accounting, the payment we make is analyzed and entered to their accounting statements, therefore they could analyze our situation at that time. Another instance that we use math and accounting is shopping. When we purchase products such as bread, yogurt, and onions at a supermarket, we get a receipt that summarizes what we buy and what we pay. The receipt is organized to do math by adding the prices of the products. Again math is used to calculate money entered into the cash register. And at the end of the cycle, the overall calculations made by the cash register is compared with the cash in hand by accounting principles. So this way, we analyze if the transactions we made are righ ...

The strengths and limitations of Pro Tools HD as a music production Essay

The strengths and limitations of Pro Tools HD as a music production system - Essay Example The major benefit Pro Tools is that it can be run alone, and can also operate very well using a large assortment of external A/D converters and/or internal Peripheral Component Interconnect (PCI) (Webopedia) or Peripheral Component Interconnect Express (PCIe) audio cards with onboard digital signal processor DSP (Dyer and Harms). In essence, Pro Tools similar to most other softwares of Digital Audio Workstation is very much like a tape recorder that is multi-track and has a mixer. There are several other added features that can perform their function only in the digital domain. Pro tools supports all of 16-bit, 24-bit and the 32-bit float audio at several different sample rates of which the maximum is 192 kHz. Pro tools can also well handle Waveform Audio File Format (WAV) ( IBM Corporation and Microsoft Corporation), Audio Interchange File Format (AIFF), AIFC, WMA, mp3 and SDII audio files as well as the QuickTime video files. A prominent feature of Pro tools is its time code, elast ic audio, tempo maps, automation and the surround sound capabilities. Pro Tools was initially developed by Peter Gotcher and Evan Brooks, both graduates of UC Berkeley. Majors of computer sciences and electrical engineering, Pro Tools began in 1984 as just a sound designer whose original purpose was to tidy up sounds for the E-MU keyboard (emulator archive). Both Brooks and Gotcher tried merging Pro Tools with E-MU. This proposition was rejected and lead to the invent of Digidesign (Brooks) now known as Avid technology. Sound Tools originally began on the 20th of January in the year 1989 at the National Association of Music Merchandisers (NAMM). Initially, it was just a simple tool that was computer based and was uses as a stereo audio editor. The software had tremendous amount of potential which was limited by the technology of hard drives (NAMM.org). The first album which was recorded and edited as well as mixed entirely with the aid of Pro Tools was The Beach Boys ‘summer i n Paradise’ in the year 1991. The album was released 1992. "Livin la Vida Loca" a song by Ricky Martin was released in the year 1999 and was the first ever song edited and mixed on Pro Tools to reach the stature of the No. 1 single. Version 2.0 of garbage was the first ever Pro Tool edited album to win a nomination for Grammy awards in the category of ‘Album of the Year’. The entire album was solely edited and mixed with the help of Pro Tools. Eventual successes as these go on to prove the success and usefulness of Pro Tools. There are several recording artists that now prefer to record their songs without the help of Pro Tools. A prominent such name is Jack White belonging to The White Stripes who argued that this tool was not highly appropriate for the purposes of recording music. He was perhaps right in saying that tools such as these were destroying the true essence of recorded music. It made fixing of the mistakes too easy recording artist and the end result or the recorded song was more of a Pro Tool fix up then the artistic effort by the recording artist. He was also right to say that Pro Tools produced the end result so perfect that music instead of sounding like it was sung by someone sounds all the same because of the near to perfect qualities added into it. He was of the opinion that this was not what music was about and it shouldn’t be what people have to hear. They had a right to know music in

Celia Cruz Article Example | Topics and Well Written Essays - 500 words

Celia Cruz - Article Example During this time, Celia became fond of the religious Yoruba music, studying the words and even creating some of her own recordings in the same style. As a teenager, Celia aunt helped to encourage Celia’s love of music, taking her to cabarets to sing, but Celia’s father had other plans. He wanted his daughter to remain in school and study to become a teacher; one of Celia’s teachers, however, further encouraged Celia’s musical talent, telling her that she could make a greatly salary as a musician than a teacher makes in a month. Prior to Celia’s career as her fans know it, Celia was singing in Havana’s radio station broadcast, which featured numerous contests. Celia won the majority of the contests, receiving cakes as prizes and offers to participate in future contests. Though she made many recordings for radio stations, Celia’s first major recordings were made in Venezuela in 1948. It was in 1950, when Celia was thirty-four, when she m ade the greatest breakthrough in a career. After the lead singer of the famous Cuban orchestra, the Sonora Mantancera, left the group, Celia was offered the permanent position.