<a href="https://en.wikipedia.org/wiki/Word_clock" title="https://en.wikipedia.org/wiki/Word_clock">Word Clock</a>.
It does not carry any absolute reference to a point in time: A clock is
used to keep a system's sample rate regular and accurate.
- Word clock is usually at the frequency of the sample rate—at 48 kHz, its period is about 20 μs. Word Clock is the most
+ Word clock is usually at the frequency of the sample rate—at 48 kHz,
+ its period is about 20 μs. Word Clock is the most
common sample rate based clock but other clocks do exist such as Black and
Burst, Tri-Level and DARS. Sample rates can be derived from these clocks as well.
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- JACK provides clock synchronization and is not concerned with time code
+ JACK (Ardour does this internally if using the ALSA backend) provides
+ clock synchronization and is not concerned with time code
(this is not entirely true, more on jack-transport later).
On the software side, jackd provides sample-accurate synchronization
between all JACK applications.
- On the hardware side, JACK uses the clock of the audio-interface.
+ On the hardware side, JACK and Ardour use the clock of the audio-interface.
Synchronization of multiple interfaces requires hardware support to sync
the clocks.
If two interfaces run at different clocks the only way to align the