Arch Linux

HalJordan

Member

Registered: 2010-11-17

Posts: 64

usb dac woes

I have a fairly reasonably priced usb dac from muse-audio.com that I'm trying to use on my workstation at work. There are a ton of cables behind the tower offering interference(including power cables for the tower and 3 monitors) and the on board sound for this thing is shit anyway. This let's me have an easy to reach plug for my earphones and it doesn't sound like fermented shit being pumped through the wires instead of electrons...

I'm using kde, and pulseaudio. Upon plugging it in it showed up, 2 seconds later i was hearing the test sound from kde's audio config page .... what came out sounded crisp, clean, and clear. But there was a catch .... I clicked the right test, and I heard it in my left ear(and vice versa). I've been poking around and have tried countless things over the last several hours when work allowed, but nothing affects it.

I edited the following(commented line is original) in /etc/pulse/daemon.conf:

; default-channel-map = front-left,front-right
 default-channel-map = front-right,front-left

I've also added the following(with the above reversed) to /etc/pulse/default.pa:

load-module module-remap-sink sink_name=reverse-stereo master=1 channels=2 master_channel_map=front-right,front-left channel_map=front-left,front-right
set-default-sink reverse-stereo

I still hear the pretty voice from the wrong ear...

What am I missing here?

satanselbow

Member

Registered: 2011-06-15

Posts: 538

Re: usb dac woes

Restarting pulse after making the change?

Are you sure you are not reversing the signal - and then reversing it again so you are effectively ending up where you started O_o

Surely if you are using the "reverse-stereo" switch it would be redundant to also remap the channels ??? Seems somewhat counter intuitive ... doing some audio work at the mo so don't want to test it on my box, sorry

R00KIE

Forum Fellow

From: Between a computer and a chair

Registered: 2008-09-14

Posts: 4,734

Re: usb dac woes

I would test that with alsa only, if the channels are still swapped there maybe you should consider filling a bug with the alsa guys and see if they can add a quirk to the driver to swap the channels (if possible).

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R00KIE
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