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Music Informatics Essay Example

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Music Informatics

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Later in 1995, the engineers created and received patent ISO/IEC 13818-3:1995 for backwards compatible MPEG-2, part 3, which incorporated more bit rates than the earlier certified MPEG-1. The mp3 uses a lossy compression algorithm, which lowers the quantity of data needed to represent an audio recording, but still sounds like the actual duplication of the original uncompressed audio file (Brandenburg and Bosi 15). Most listeners are unable to pinpoint any difference between the original audio music file and the reproduced mp3 file. The technology employed in creating mp3 uses computer science to compress audio files within a CD. For instance, in a scenario where knowledge of music informatics creates an mp3 file using 128kbit/s the resulting mp3 would only be the size of one eleventh of the original CD source.In addition, computer science or music informatics can be used to reproduce audio files into digital files of either a higher or lower quality. This is typically done by constructing the mp3 file at either higher or lower bit rates respectively. The compression technology applied in the creation of mp3 files reduces the accuracy of particular parts of sound, which is beyond most people’s auditory resolution capacity. This system of removing rather unimportant parts of a music file is called perceptual coding. The music informatics technology employed in perceptual coding entails the use of psychoacoustic methods to reduce the accuracy of music components that have lower audibility in human beings. The same models can be used to get rid of music components entirely. Once a reduction of components is done or components discarded, a recording of the remaining information is done in an efficient manner that uses the least amount of space (Miranda 87).When conduction lossy audio encoding is used to create an mp3 file, a trade-off often emerges with regard to the space used and sound quality of the reproduced music file. The music creator is permissible to appoint a bit rate that will, in turn, determine the amount of kilobits the audio file will utilize per second. Essentially, the greater the bit rate, the bigger the compressed file (mp3) will be; thus, the closer the file will sound to the original audio file. If the compression process used a low bit rate, compression artifacts may surface in terms of sound quality. Compression artifacts are sounds that may be included in the

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Works Cited

Collins, N. Introduction to Computer Music. New York: Wiley & Sons: 2010. Print.

Brandenburg, Karl-Heinz, and Marina Bosi. “Overview of MPEG Audio: Current and Future Standards for Low-Bit-Rate Audio Coding.” Journal of the Audio Engineering Society 45.1: 4-21, 1997. Print.

Miranda, Eduardo. Composing Music with Computers (Music Technology). San Francisco: Focal Press: 2003. Print.

SoundHound. Instant Music Search and Discovery: Sound2Sound. Web. 5 Mar. 2012. <http://www.soundhound.com/index.php?action=s.sound2sound>

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