Edirol UA-25 advanced mode and various questions

Edirol UA-25 advanced mode and various questions

[Jean-Michel Pouré]

Dear Friends,

The Edirol UA-25 has two modes : advanced and normal. Advanced mode
supports up to 96.000 Hz in 24 bits recording. Normal mode supports only
16 bits/41100 Hz recording.

In normal mode, the device is compatible with Alsa USB-sound. Advanced
mode is not recognised by default by Alsa. Is there any chance that
Advanced mode works under Alsa? 

Also, in normal mode, there seems to be three subdevices (analog,
digital in, digital out). But I only see one device in Alsa.

I wrote all information about the card here on the wiki:
http://alsa.opensrc.org/Edirol_UA-25

If someone could help me record sound from the microphone and produce
digital out, this would be very helpful.

Kind regards,
Jean-Michel Pouré


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Re: Edirol UA-25 advanced mode and various questions

[Fons Adriaensen]

On Thu, Feb 15, 2007 at 01:54:39PM +0100, Jean-Michel Pouré wrote:

> The Edirol UA-25 has two modes : advanced and normal. Advanced mode
> supports up to 96.000 Hz in 24 bits recording. Normal mode supports only
> 16 bits/41100 Hz recording.
> 
> In normal mode, the device is compatible with Alsa USB-sound. Advanced
> mode is not recognised by default by Alsa. Is there any chance that
> Advanced mode works under Alsa? 

I'm using an UA-2 which is quite similar but without the MIDI interface.
The standard ALSA usb driver _does_ support the 'advanced' mode. You have
to restart the module (using modprobe) after each change to mode or sample
frequency. 

Contrary to what you seem to say on the Wiki, this device is full duplex
when in standard mode. Nothing special should be required. It is either
capture or playback only in advanced mode.

As far as ALSA is concerced there is one stereo input stream and/or one
stereo output. It doesn't matter to ALSA from/to which connectors the
signal is coming/going to. If you can record from line input then the
mic input should work as well. If you have analog out then the digital
out will work at the same time. 

-- 
FA

Lascia la spina, cogli la rosa.


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Re: Edirol UA-25 advanced mode and various questions

[Clemens Ladisch]

Jean-Michel Pouré wrote:
> Advanced mode is not recognised by default by Alsa.

It is since ALSA 1.0.7.

> If someone could help me record sound from the microphone

What happens when you try to do this?


Regards,
Clemens

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