[linux-audio-user] Novation ReMOTE, Speedio & XStation

[Nick Dowell]

Hi,

I've been trying out the novation xstation usb audio interface with  
alsa 1.0.3, using the snd-usb-audio driver.

The first problem I encountered was to do with audio sample formats:  
the hardware only supports 24 bit whereas most computer audio is 16  
bit. So I tried to fix that with a .asoundrc:

pcm.novation {
	type plug
	slave {
		pcm "hw:0,0"
		format S24_3LE
	}
}

something's still not quite right, however:

$ aplay -D novation korova.wav
Playing WAVE 'korova.wav' : Signed 16 bit Little Endian, Rate 44100 Hz,  
Stereo
ALSA lib pcm_hw.c:325:(snd_pcm_hw_hw_params) SNDRV_PCM_IOCTL_HW_PARAMS  
failed: Connection timed out
aplay: set_params:840: Unable to install hw params:
ACCESS:  RRW_INTERLEAVED
FORMAT:  S16_LE
....

Any ideas what's wrong here?

The same thing happens when i try with 'aplay -D default'.
But with 'aplay -D "hw:0,0"' the error is:
aplay: set_params:805: Sample format non available

Why should the error be any different? I thought default was the same  
as hw:0,0?
 From  
http://www.alsa-project.org/alsa-doc/doc-php/asoundrc.php? 
module=Generic:
"The keyword default is defined in the ALSA lib api and will always  
access hw:0,0"

Nick

On 16 Nov 2004, at 15:30, Eric Dantan Rzewnicki wrote:

> Nick Dowell wrote:
>> Hi,
>> I noticed there has been some discussion as to whether novation usb   
>> midi and/or audio products will work with linux:
>> http://www.music.columbia.edu/pipermail/linux-audio-user/2003-August/  
>> 005765.html
>> I can tell you that the audio side of all out usb products are usb   
>> class compliant, so they should work with the usb audio class  
>> drivers.  If they don't, please let me know.
>> The MIDI communication is not class compliant. It is a very simple   
>> protocol though, and should be easy to implement. If anyone wants   
>> information to write one we'd be more than happy to give it.
>> Thanks.
>> Nick Dowell
>> Software Team Leader
>> Focusrite Audio Engineering / Novation DMS
>
> That was probably me. I bought a Remote 25 around that time. I'm only  
> using the midi interface. But, I am very interested in being able to  
> use it via USB. It would be great to be able to get firmware updates  
> and to save templates to my PC.
>
> -Eric Rz.
>