Sampling rate is the number of times per second that an analog audio signal is sampled or "measured", at discrete intervals of time, during processing (original recording and A to D conversion).
Sampling frequency is the rate at which an analog signal is sampled into a digital signal consisting of digital samples and is usually measured in hertz, or samples per second.
Higher frequencies imply higher-quality sampling, that is, the higher the sampling frequency, the greater the frequency content of the source material that can be accurately represented in the recording.
| 8000 Hz | Telephone |
| 22050 Hz | Better than FM Radio |
| 44100 Hz | CD (compact disk) |
| 96000 Hz | DVD Audio and Super Audio CD |