9 Apr
2008
9 Apr
'08
10:49 p.m.
This might seem like a stupid question, but it's really starting to
annoy me.
I have an Emu sound card that I set to 44.1khz. The problem comes in
when I try to use anything, whether it be Amarok, mplayer, Totem, or
anything, to play a file or a radio stream (or even the audio in a
video) at a different sample rate. Instead of the sample rate getting
converted to my system's 44.1khz, these files get played back either too
fast or too slow, like a tape deck set to the wrong speed.
Is there a solution to this issue? When I boot into Windows, JetPlayer
automatically converts the sample rates of any file to the system rate,
if it's required, so it must be possible. Thanks!
-- Darren
9 Apr
9 Apr
10:53 p.m.
On Wed, Apr 9, 2008 at 8:49 PM, Darren Landrum
<darren.landrum(a)sbcglobal.net> wrote:
I have an Emu sound card that I set to 44.1khz. The
problem comes in
when I try to use anything, whether it be Amarok, mplayer, Totem, or
anything, to play a file or a radio stream (or even the audio in a
video) at a different sample rate. Instead of the sample rate getting
converted to my system's 44.1khz, these files get played back either too
fast or too slow, like a tape deck set to the wrong speed.
Is there a solution to this issue? When I boot into Windows, JetPlayer
automatically converts the sample rates of any file to the system rate,
if it's required, so it must be possible. Thanks!
Not too surprising, as the ALSA support for the EMU cards is pretty
new. Probably just needs a card specific config file.
Which EMU soundcard? Which ALSA version? What ALSA device are your
apps configured to use?
Lee
11:12 p.m.
Lee Revell wrote:
Not too surprising, as the ALSA support for the EMU
cards is pretty
new. Probably just needs a card specific config file.
Which EMU soundcard? Which ALSA version? What ALSA device are your
apps configured to use?
It's an Emu1212m. I had bought it back when I was resigned to using
Windows, before I considered Linux a possibility for music production.
Now I'm wishing I had stuck with getting a used Seasound Soloist with
the Ice1712. I already had the PCI card and the Expander, too. Though
don't get me wrong, the Emu is a great-sounding card, and well-built.
I can't tell exactly which specific ALSA device AmaroK is using,
unfortunately. I'm just telling it to use ALSA, and it's using the
"Default" setting, which is probably 0,0.
Thanks for the help!
-- Darren
11:13 p.m.
Darren Landrum wrote:
Lee Revell wrote:
Oh, and I forgot to mention: ALSA 1.0.16 Stable, compiled from sources.
-- Darren
Not too surprising, as the ALSA support for the
EMU cards is pretty
new. Probably just needs a card specific config file.
Which EMU soundcard? Which ALSA version? What ALSA device are your
apps configured to use?
It's an Emu1212m. I had bought it back when I was resigned to using
Windows, before I considered Linux a possibility for music production.
Now I'm wishing I had stuck with getting a used Seasound Soloist with
the Ice1712. I already had the PCI card and the Expander, too. Though
don't get me wrong, the Emu is a great-sounding card, and well-built.
I can't tell exactly which specific ALSA device AmaroK is using,
unfortunately. I'm just telling it to use ALSA, and it's using the
"Default" setting, which is probably 0,0. 
11:07 p.m.
G'day Darren,
What is supposed to happen is that the application that is playing the
audio should set the sound card to the sample rate of the audio source.
It does this by issuing commands to the sound card driver, or sound
server.
If the sound card is forced to another rate, then sure, you'll get pitch
and speed changes.
There isn't really a "system" rate, per se.
Probably need more information ... are you using ALSA or OSS drivers
for the sound card, and are you using an audio sound server like Jack,
Esound, Pulseaudio?
--
James Cameron mailto:quozl@us.netrek.org http://quozl.netrek.org/
11:16 p.m.
James Cameron wrote:
G'day Darren,
What is supposed to happen is that the application that is playing the
audio should set the sound card to the sample rate of the audio source.
It does this by issuing commands to the sound card driver, or sound
server.
If the sound card is forced to another rate, then sure, you'll get pitch
and speed changes.
Well, that would explain a few things, as I have to adjust the rate
manually through Alsamixer, and 44.1 and 48khz are the only options this
card supports. It's the same deal on the Windows side, though, and I can
still play back 22.05khz stuff back with no issues. It's possible that
the factory drivers from Emu are doing the SRC on the fly in the
background when needed.
Probably need more information ... are you using ALSA
or OSS drivers
for the sound card, and are you using an audio sound server like Jack,
Esound, Pulseaudio?
I'm using ALSA 1.0.16 Stable, compiled myself from sources.
-- Darren
10 Apr
10 Apr
3:22 a.m.
On Thursday 10 April 2008, Darren Landrum wrote:
James Cameron wrote:
Yeah and ALSA should do the same. It already does this for quite a few cards.
I'd write a mail to ALSA-users and see what the ALSA guys say about it.
Regards,
Flo
--
Palimm Palimm!
http://tapas.affenbande.org
G'day Darren,
What is supposed to happen is that the application that is playing the
audio should set the sound card to the sample rate of the audio source.
It does this by issuing commands to the sound card driver, or sound
server.
If the sound card is forced to another rate, then sure, you'll get pitch
and speed changes.
Well, that would explain a few things, as I have to adjust the rate
manually through Alsamixer, and 44.1 and 48khz are the only options this
card supports. It's the same deal on the Windows side, though, and I can
still play back 22.05khz stuff back with no issues. It's possible that
the factory drivers from Emu are doing the SRC on the fly in the
background when needed.
6104
days inactive
6105
days old
linux-audio-user@lists.linuxaudio.org
6 comments
4 participants
participants (4)
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Darren Landrum -
Florian Schmidt -
James Cameron -
Lee Revell