Sampling Frequency or Sampling Rate
Sampling Frequency or Sampling Rate :
The number of times a waveform is sampled per second, usually expressed in kiloHertz (kHz). You will probably come across this term when using software for creating or editing sound files. The sampling frequency measurement usually ranges from 8kHz (a telephone quality recording) to 48kHz (CD quality recording or higher). The sampling frequency measurement is combined with another measurement, the bit size (usually 16 bits nowadays), to determine how much space an audio file consumes on a hard disc as well as how much processing time is required to play it. The higher the figure in kHz the better the quality of recording and how much space the recording occupies. Speech can be recorded adequately at 22.05kHz, but music is better recorded at 44.1kHz or higher. See Hertz, MP3, Sampling, WAV, WMA. See: Section 2.2.3.3, Module 2.2, headed Sound recording and editing software
