Sampling Rate Illustrator

Use this page to draw a sine wave
at different sampling rates

This page draws a sine wave at 7 bits resolution, that is, 128 amplitude steps. Selectable sampling rates range from 2 samples per Hertz to 64 samples per Hertz.

The sampling rate for audio CDs (44.1 kHz) is based on the Nyquist theory, which states that a signal can be captured with a sampling rate that is twice the frequency of the sampled signal. For recording music, such a low sampling rate does not work well. However, if music is recorded at a higher sampling rate, acceptable results can be obtained if this signal is down converted to 44.1 kHz with a computer.

Newer digital audio formats that improve upon the audio CD are now available with faster sampling rates and finer amplitude resolution. The standard audio CD has only 65,536 amplitude steps divided across both the positive and negative phases of a 96 dB dynamic range. 24 bit digital audio has 256 times as many amplitude steps divided across half again as many dB.