10 Aug
2013
10 Aug
'13
3:42 a.m.
I meant to share this last night but sidetracked. These are the specs from the DAC
packaging, fwiw. Does this help to address format/capabilities questions?
https://www.dropbox.com/s/yxgtmfspneva9io/dacSpecs.pdf
On Aug 9, 2013, at 5:12 AM, linux-audio-user-request(a)lists.linuxaudio.org wrote:
Date: Thu, 8 Aug 2013 10:58:49 -0400
From: Paul Davis <paul(a)linuxaudiosystems.com>
To: len(a)ovenwerks.net
Cc: Linux Audio Users <linux-audio-user(a)lists.linuxaudio.org>
Subject: Re: [LAU] alsaplayer error using USB Audio DAC
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On Thu, Aug 8, 2013 at 10:53 AM, Len Ovens <len(a)ovenwerks.net> wrote:
Generally for trouble shooting I would hit the card directly:
alsaplayer -i hw:1,0 filename.flac
aplay --device=hw:1,0 filename.flac
aplay can't handle anything but straight PCM formats. in addition, using
hw:XXX means that the requested data format MUST match the hardware
capabilities. if you ask for a sample rate or channel count not supported
by the hardware, the device configuration will fail. this is why the
"default" device with ALSA is never hw:XXX but at minimum plughw:XXX (which
can do just about any format conversion necessary). 
10 Aug
10 Aug
10:29 a.m.
New subject: alsaplayer error using USB Audio DAC
Roger Weinheimer wrote:
These are the specs from the DAC packaging, fwiw. Does
this help to address format/capabilities questions?
It does not really matter what particular format is attempted to be used
by the player, and what particular format is actually supported by the
device. Just replace "hw" with "plughw", and the format will be
automatically converted, if necessary.
Regards,
Clemens
3:19 p.m.
New subject: alsaplayer error using USB Audio DAC
So I tried
miniG4:~$ aplay --device=plughw:1,0
flac/ripit/B/Beatles/Let_It_Be..._Naked/10_Across_The_Universe.flac
Playing raw data
'flac/ripit/B/Beatles/Let_It_Be..._Naked/10_Across_The_Universe.flac' : Unsigned 8
bit, Rate 8000 Hz, Mono
^CAborted by signal Interrupt...
miniG4:~$
and got static. Which is a huge improvement! At least I'm getting sound, now.
Clemens, I appreciate all your interest and support.
As I stated originally, the man at the local stereo shop duplicated my environment, albeit
on slightly different hardware (macbook G4 vs mini G4). His is working. What differences
should I be looking at?
On Aug 10, 2013, at 1:28 AM, Clemens Ladisch wrote:
Roger Weinheimer wrote:
These are the specs from the DAC packaging, fwiw.
Does this help to address format/capabilities questions?
It does not really matter what particular format is attempted to be used
by the player, and what particular format is actually supported by the
device. Just replace "hw" with "plughw", and the format will be
automatically converted, if necessary.
Regards,
Clemens 
3:22 p.m.
New subject: alsaplayer error using USB Audio DAC
you get static because aplay doesn't handle anything except regular PCM
data. compressed file formats like FLAC are recognized as "raw data" and it
just guesses a sample rate and data format, which naturally are all wrong.
find a PCM file (something.wav) and try that.
On Sat, Aug 10, 2013 at 9:19 AM, Roger Weinheimer <rweinheimer(a)yahoo.com>wrote;wrote:
So I tried
miniG4:~$ aplay --device=plughw:1,0
flac/ripit/B/Beatles/Let_It_Be..._Naked/10_Across_The_Universe.flac
Playing raw data
'flac/ripit/B/Beatles/Let_It_Be..._Naked/10_Across_The_Universe.flac' :
Unsigned 8 bit, Rate 8000 Hz, Mono
^CAborted by signal Interrupt...
miniG4:~$
and got static. Which is a huge improvement! At least I'm getting sound,
now.
Clemens, I appreciate all your interest and support.
As I stated originally, the man at the local stereo shop duplicated my
environment, albeit on slightly different hardware (macbook G4 vs mini G4).
His is working. What differences should I be looking at?
On Aug 10, 2013, at 1:28 AM, Clemens Ladisch wrote:
Roger Weinheimer wrote:
> These are the specs from the DAC packaging, fwiw. Does this help to
address
format/capabilities questions?
It does not really matter what particular format is attempted to be used
by the player, and what particular format is actually supported by the
device. Just replace "hw" with "plughw", and the format will be
automatically converted, if necessary.
Regards,
Clemens
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Linux-audio-user(a)lists.linuxaudio.org
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14 Aug
14 Aug
11:43 a.m.
New subject: alsaplayer error using USB Audio DAC
OK, I can play wav files using aplay through the USB DAC. It doesn't matter whether I
specify card and device on the command line or in an asoundrc file. Getting back to the
subject of this thread, the problem is with alsaplayer. Alsaplayer can play wav files
through the SoundByLayout (onboard card) of the mac mini directly into an amp, but when I
try to play the same wav file with alsaplayer through the USB DAC, I get the originally
posted error(s). Doesn't matter if it is flac or wav, the error is the same.
$ alsaplayer file.wav
error on set_format SND_PCM_FORMAT_S16
Unavailable hw params:
... (detail in original post)
error on set_format SND_PCM_FORMAT_S16
Unavailable hw params:
... (detail in original post)
failed to configure output device...trying OSS
... (above repeated once)
$
I would prefer to use alsaplayer, which supports compression and already has all the handy
control (start-stop-pause) functions. I assume this is some configuration or missing
library(?) issue with alsaplayer. I appreciate any help.
On Aug 10, 2013, at 6:22 AM, Paul Davis wrote:
you get static because aplay doesn't handle
anything except regular PCM data. compressed file formats like FLAC are recognized as
"raw data" and it just guesses a sample rate and data format, which naturally
are all wrong. find a PCM file (something.wav) and try that.
On Sat, Aug 10, 2013 at 9:19 AM, Roger Weinheimer <rweinheimer(a)yahoo.com> wrote:
So I tried
miniG4:~$ aplay --device=plughw:1,0
flac/ripit/B/Beatles/Let_It_Be..._Naked/10_Across_The_Universe.flac
Playing raw data
'flac/ripit/B/Beatles/Let_It_Be..._Naked/10_Across_The_Universe.flac' : Unsigned 8
bit, Rate 8000 Hz, Mono
^CAborted by signal Interrupt...
miniG4:~$
and got static. Which is a huge improvement! At least I'm getting sound, now.
Clemens, I appreciate all your interest and support.
As I stated originally, the man at the local stereo shop duplicated my environment,
albeit on slightly different hardware (macbook G4 vs mini G4). His is working. What
differences should I be looking at?
On Aug 10, 2013, at 1:28 AM, Clemens Ladisch wrote:
Roger Weinheimer wrote:
_______________________________________________
Linux-audio-user mailing list
Linux-audio-user(a)lists.linuxaudio.org
http://lists.linuxaudio.org/listinfo/linux-audio-user
These are the specs from the DAC packaging, fwiw.
Does this help to address format/capabilities questions?
It does not really matter what particular format is attempted to be used
by the player, and what particular format is actually supported by the
device. Just replace "hw" with "plughw", and the format will be
automatically converted, if necessary.
Regards,
Clemens
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days inactive
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days old
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Roger Weinheimer