This meant that CDs had to sample at a rate of 40kHz or higher in order to cover the audible frequency spectrum. It is known from Nyquist’s Theorem that in order to reproduce any given audio frequency, the sample rate has to be at least double the highest frequency you wanted to reproduce. This is generally accepted as being roughly 20Hz to 20kHz for human hearing.
The 44.1kHz sample rate has been with us for a long time but the question is, do we still need it in the modern world and why was it chosen as a sample rate in the first place? The Origins Of 44.1kHzĭuring the development of CD, one of the requirements was that the format must be able to reproduce the entire audible frequency spectrum. Most of the music which has ever been released in a digital format has used this sample rate millions of albums, both on CD and more recently as MP3 and AAC downloads. Ever since the release of the compact disc in 1982, we’ve had the sample rate of 44.1kHz.
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