27 Aug
2014
27 Aug
'14
7:02 p.m.
On Tue, Aug 26, 2014 at 8:45 AM, Grant <emailgrant(a)gmail.com> wrote:
I think you're saying that the ALSA resampler won't be used if the
upstream application does the resampling itself. Is that correct?
How can I find out if ALSA is the one resampling in a particular
scenario?
Is there any way to find out if this is happening? Do some
applications really do this?
depends on the device the application opens.
If you tell it to open a device with a name like "hw:N" or
"hw:CARDNAME"
then ALSA will offer only the capabilities present in the audio hardware.
If you open it with a name like "plughw:N" or "plughw:CARD" then ALSA
will
do everything it can to honor the format, sampling rate etc. asked for by
the application (including resampling, channel multiplexing etc.).
I have a USB
DAC that can only handle 16/44.1 as input and output. I
think ALSA will resample everything to 16/44.1 automatically, but I'd
I think what I am saying is that for most cases the sample rate of your
audio IF doesn't matter. So adding resampling to everything doesn't make
sense... maybe try without first.