48,000 Hz

In digital audio, 48,000 Hz (also represented as 48 kHz or DVD Quality) is a common sampling rate.

[1] As the use of digital audio increased, it became apparent that standardization on a single sampling rate was needed, which started to be worked on in 1981.

[1] 60 kHz would have been the ideal sampling rate for film and video use because it would have a complete absence of leap frames, but from the professional audio-only recording perspective, it was considered wastefully high.

[1][3] To synchronize digital audio with television and film, there were five sampling rates available, that had leap frames but were not too high, which were as follows: 45, 48, 50, 52.5, and 54 kHz.

[3] Humans can't easily hear the difference between 48, 44.1 kHz, and other similar sampling rates.