E-MU 0404 USB 96 kHz Recording

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I'm trying to use a E-MU 0404 USB soundcard for sound recording on Debian 11 with jack and ardour. It works well if I use a 48 kHz sampling rate, but if I go up to 96 kHz I get severe sound distortions. A post in this forum discussion (post #25):


suggests that the problem can be circumvented by using the card as a 2-channel device (disabling the SPDIF inputs, which I don't use anyway), and gives an example of the `.asoundrc` configuration needed to achieve that. I tried that solution by putting this in my `.asoundrc`:

pcm.emu2ch {
  type hw
  card "USB"
  device 4
  format S24_3LE
  channels 2

ctl.emu2ch {
        type hw;
        card 4;

but I'm unable to initialize jack from the command line calling the `emu2ch` device. I get the following error:

creating alsa driver ... emu2ch|emu2ch|1024|2|48000|0|0|nomon|swmeter|-|32bit ALSA: Cannot open PCM device alsa_pcm for playback. Falling back to capture-only mode
cannot load driver module alsa
no message buffer overruns

In qjackctl I don't see the 2-channel version of the card as a selectable option.

My understanding of options for calling jack from the command line is quite limited. My understanding of `.asoundrc` configuration options is even more limited. I'm hoping that someone could point me out to a solution to use the card as a 2-channel device through jack, and thus hopefully circumvent the sound distortion issue when recording at a 96 kHz sampling rate.



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