Re: Output sample rate

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>> I'm trying to get music from mpd to my USB DAC in 100% untouched
>> form. My mpd.conf is as follows:
>>
>> audio_output {
>> type "alsa"
>> name "USB Monica"
>> device "hw:0,0"
>> format "44100:16:2"
>> }
>
> Don't know anything about mpd but you can set up an asoundrc "plug" in
> alsa that will fix the rate from alsa to the device. The following
> example works for me:
> ======================================
> pcm.my_device {
>        type hw
>        card 0
>        }
> pcm.my_device_44 {
>        type plug
>        slave {
>                pcm my_device
>                rate 44100
>                }
>        }
> pcm.my_device_48 {
>        type plug
>        slave {
>                pcm my_device
>                rate 48000
>                }
>        }
> ======================================
> The set the output of your app to the plug device. For example, in
> Audacious > Output Plugin Preferences > Device Settings > Audio device:
> type "my_device_44". Also disable the rate converter and check bypass
> signal processing. Not to mention, per this example, to use a 44.1kHz
> source file.
>
> I use it to insure that my audio does not get munged.
>
> Of course if the actual hardware (my_device) does not support the sample
> rate, or its clock is not to set to that sample rate, then you will not
> get playback.
>
> --
> Chris

Thanks, I'd like to try that.  Here's what I have:

# cat /root/.asoundrc
pcm.my_device {
	type hw
	card 0
	}
pcm.my_device_44 {
	type plug
	slave {
		pcm my_device
		rate 44100
		}
	}

Relevant mpd.conf section:

audio_output {
        type "alsa"
        name "USB Monica"
        device my_device_44"
}

I've also tried:

audio_output {
        type                    "my_device_44"
        name                    "USB Monica"
}

I've rebooted but I get an error from mpd when trying to play music:
"problems opening sound device".  The files are definitely 16/44.1.
Do you see what could be wrong?

- Grant

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