12 Aug
2008
12 Aug
'08
7:58 a.m.
Adrien DANIEL wrote:
On Tue, Aug 12, 2008 at 9:16 AM, Clemens Ladisch
<cladisch(a)fastmail.net> wrote:
That post is wrong, audio data packets are always sent at 1000 Hz (every
1 ms), in both Windows and Linux (input devices use a different transfer
type).
Regards,
Clemens
USB doesn't have a built-in sample rate;
audio samples are transported
in packets.
Yes. I am interested by the frequency at which these packets are send.
[...]
I read a post on another list that I could report here :
--
The reason is, the data bus of the USB is not all that fast - it's high
bandwidth, but has a slow sample rate - default is only 125 Hz.
This means you can only "deliver" a sound to begin roughly every 7.5 ms...