[Alsa-user] Novation Speedio

2006-09-24 Thread Stefano Barbi
Dear all, i am writing to try to get help using Novation Speedio USB card (1235:0002) in linux. Other related posts have complained about garbled playback and recording, while the midi side has been reported to work fine. The original words read: The MIDI side of mine works fine, but the audio

[Alsa-user] USB card @48kHz only: at what layer to resample?

2006-09-24 Thread [EMAIL PROTECTED]
Dear All, Apologies in advance if I am asking a stupid question, I am quite new with alsa. I posting to both lists because I am not sure about handling this issue at the application development level or at the alsa driver configuration level. I am developing an audio application using the

Re: [Alsa-user] USB card @48kHz only: at what layer to resample?

2006-09-24 Thread Bill Unruh
On Sun, 24 Sep 2006, [EMAIL PROTECTED] wrote: Dear All, Apologies in advance if I am asking a stupid question, I am quite new with alsa. I posting to both lists because I am not sure about handling this issue at the application development level or at the alsa driver configuration

Re: [Alsa-user] USB card @48kHz only: at what layer to resample?

2006-09-24 Thread Andrew Mahone
alsa-plugins includes a resampling plugin using libsamplerate, which implements a number of resampling algorithms. -- Andrew Mahone andrew DOT mahone AT gmail DOT com - Take Surveys. Earn Cash. Influence the Future of IT

Re: [Alsa-user] USB card @48kHz only: at what layer to resample?

2006-09-24 Thread Sergei Steshenko
On Sun, 24 Sep 2006 11:36:51 -0400 Andrew Mahone [EMAIL PROTECTED] wrote: alsa-plugins includes a resampling plugin using libsamplerate, which implements a number of resampling algorithms. OK, so it's the plugin I meant. -- Visit my http://appsfromscratch.berlios.de/ open source project.

Re: [Alsa-user] [Alsa-devel] USB card @48kHz only: at what layer to resample?

2006-09-24 Thread [EMAIL PROTECTED]
Thanks Markus and all for the replies. My problem is that STK does not seem able to see the alsa plugins. In other words, when one uses -say- aplay it is possible to specify what device or plugin to use with the -D option, for example: -D plug:duplex as you suggest in the example. In the STK

Re: [Alsa-user] [Alsa-devel] USB card @48kHz only: at what layer to resample?

2006-09-24 Thread Lee Revell
On Sun, 2006-09-24 at 18:41 +0200, [EMAIL PROTECTED] wrote: Thanks Markus and all for the replies. My problem is that STK does not seem able to see the alsa plugins. In other words, when one uses -say- aplay it is possible to specify what device or plugin to use with the -D option, for

Re: [Alsa-user] [Alsa-devel] USB card @48kHz only: at what layer to resample?

2006-09-24 Thread Lee Revell
On Sun, 2006-09-24 at 08:12 -0700, Bill Unruh wrote: This is audio card insanity. All CDs are at 44100 but for some reason many card manufacturers designed their cards to run at 48000. This is a real problem since this requires rate conversion. Rate conversion is in general a very very noisy

[Alsa-user] /dev/dsp not found with kernel 2.6.16.29

2006-09-24 Thread lists . alsa-users
Hallo alsa-users, Currently I'm running alsa driver 1.0.12 with kernel 2.6.16.27. This afternoon I tried to use kernel 2.6.16.29. I used 'make oldconfig' with the config of kernel 2.6.16.27. That made alsa complain that /dev/dsp could not be found. But it *does* exist: /dev/dsp - sound/dsp,

Re: [Alsa-user] /dev/dsp not found with kernel 2.6.16.29

2006-09-24 Thread Lee Revell
On Sun, 2006-09-24 at 21:37 +0200, [EMAIL PROTECTED] wrote: Hallo alsa-users, Currently I'm running alsa driver 1.0.12 with kernel 2.6.16.27. This afternoon I tried to use kernel 2.6.16.29. I used 'make oldconfig' with the config of kernel 2.6.16.27. That made alsa complain that /dev/dsp

Re: [Alsa-user] Audio drop-out with ac3 on iec958 during heavy SATA io

2006-09-24 Thread Dominique Dumont
Takashi Iwai [EMAIL PROTECTED] writes: If the preempt option doesn't solve the problem, I'd recommend you to consult on LKML. This is weird. With the preempt kernel, I get an xrun every time I start reading the ac3 stream on sata disk. Not other I/O on the sata device: Sep 24 20:50:10 gandalf

Re: [Alsa-user] [Alsa-devel] USB card @48kHz only: at what layer to resample?

2006-09-24 Thread [EMAIL PROTECTED]
Hi Lee, You just need to patch STK to allow plughw devices to be used, or give up and run at 48Khz. There's no other solution. Thanks for the concise and clear answer. I decided to change my code and run at 48kHz. I am now facing a new problem. If I run at 48kHz with the old soundcard