4 votes

Why do MP3 files have a sample rate? (When they are just composed of sine waves)

Digital sound files are not made up of sine waves - You may be thinking of FM or West Coast synthesis where sine waves are used to modulate other sine waves to generate more complex waveforms. You ...
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1 vote

Why do MP3 files have a sample rate? (When they are just composed of sine waves)

Yes, according to https://www.math.utah.edu/~gustafso/s2012/2270/web-projects/Guckert-audio-compression-svd-mdct-MP3.pdf there is a FFT involved in the MP3 compression. However, the coding is tighly ...
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1 vote
Accepted

Sound sampling rate for insect mapping project

2/ about the audio recorder limitations Audio recording devices are made to record signals which can be heard. Since our ears are limited to 20kHz, we just need a 40kHz sampling (the 20kHz is the half ...
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