Audio Sample Rate

Audio Sample Rate

The Audio Sample Rate is the number of samples taken from the continuous incoming audio signal to create what is known as a discrete signal. This is so they can be reconstructed later to reproduce audio signals. The units of sample rates are in Hertz. An audio sample rate only needs to be a certain rate to properly reproduce any frequency, this is set by the Nyquist theorem.

Audio sample rates are taken per second. To reproduce the highest frequency we can hear and a bit more is 48,000 Hz (48kHz). These samples record the amplitude and the frequency. You can record a lot higher for even greater depth and is useful for editing and stretching sound effects etc... They highest rates professional recorders process is 192 kHz.

Audio Sample Rate differs from bit depth and other information stored on it because the sample is merely a reference point. The is obviously essential though for any other information to be processed properly. This is the base of all audio files actual data, not including meta data etc...

For more information on bit depth see Audio Bit Depth