MadSci Network: Computer Science
Query:

Re: What is the sampling rate of cassette tapes?

Date: Sun Sep 12 10:11:49 1999
Posted By: Eric Maass, Operations Manager, semiconductors / communication products
Area of science: Computer Science
ID: 934480114.Cs
Message:

I believe you are referring to the cassette tapes that most of us are familiar with, although there are digital audio tapes in which sound is recorded on tape in digital form - see http://www.vqworks.com/chap12.html for more information on digital audio tapes The cassette tapes that we generally use don't have a "sampling rate", because the information is stored in analog form rather than in digital form. What this means is that the sound is continuously recorded on a cassette tape, as shown here: (click on the image or these words for explanation about how tape recorders record sound) In contrast, CD players use sound that is in DIGITAL form - the sound has been sampled at a certain sampling rate, and the signal that was sampled has been converted to a series of "1"s and "0"s that represent the voltage associated with the signal at each moment the signal was sampled. (click on the image or these words for more explanation of how CD's record sound) So, while there is a sampling rate for music or sound recorded digitally, as in a CD, there is no sampling rate for a tape - or, alternatively, you could say that a tape samples sound continuously.


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