[LAU] jackd version 0.116.1 - sampling rate of 44099 hz?

Justin Smith noisesmith at gmail.com
Sun Jul 19 20:03:48 EDT 2009

On Sun, Jul 19, 2009 at 5:00 PM, Paul Davis<paul at linuxaudiosystems.com> wrote:
> On Sun, Jul 19, 2009 at 7:26 PM, Justin Smith<noisesmith at gmail.com> wrote:
>> I have an ensoniq audiopci card that I have been using successfully at
>> 48000 hz for a while now. I have just started working on a project
>> with prerecorded material at 44100 hz, so I reconfigured jack in order
>> to avoid needless sample rate conversion. Somehow jack thinks that my
>> card is running at 44099 hz, so it is resampling the source material
>> anyway.
>> Why would my card be running at 44099 hz, is this a software or
>> hardware problem? I am going to just edit the wav headers to say 44099
>> so they agree with the engine sample rate for now, but would be
>> interested to know what the source of this weirdness would be.
> its reported by the ALSA driver, which in turn is written based on
> information available about the h/w. its debatable what ALSA should
> report in these situations, but its a driver-level issue, and not
> something in JACK's domain.
> JACK does NOT resample audio, ever. neither does ALSA if you use the
> hw:N device(s).

Sorry, I was conflating jack and ardour, I meant that ardour was
wanting to resample.

I used sox to copy the audio files to .raw, and then converted the
.raw files to .wav at 44099 sampling rate. I had a suspicion it may
have been the alsa backend, thanks for the info.

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