[LAU] jack/oversampling

tim tim at klingt.org
Sun Mar 16 12:18:12 UTC 2014


>>> for a project, i'm working with 192 khz, but unfortunately, none of my
>>> audio interfaces (rme multiface and fireface ucx) support 192khz. the
>>> ucx supports 192khz in hardware, but the usb/alsa/class-compliant mode
>>> only seems to go up to 96khz. so i wonder, is there any way to perform
>>> upsampling within jack?
>>
>> You could run Jack with the dummy backend and use zita-a2j and/or j2a
>> to add your HW interface.
>>
> 
> and of course if you use jack1 (0.124.0 or later), these tools are built in
> to jackd, so that adding the device can be as simple as -A DEVNAME (or it
> can be a bit more complex if you need to specify different parameters from
> the server's own device, as you do).

unfortunately jack1 is not an option for me, as it's approach to
pre-fault the stack does not have any checks for the stack boundaries
[1] ... this consistently crashed my application

tim

[1] http://trac.jackaudio.org/ticket/276




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