[PD] 24bit on Linux Indigo IO

[Frank Barknecht]

Hallo,
Claude Heiland-Allen hat gesagt: // Claude Heiland-Allen wrote:

> Ed Kelly wrote:
> > Does anyone know how to get PD working with a 24bit soundcard under Linux?
> > I have an Echo Indigo IO - but I get a decimated mess using PD - sounds 
> > like a 24bit DAC playing back a 16bit word...
> 
> 1. Use alsa plughw interface instead of alsa hw interface.
> 2. Use jack.
> 
> Both works for me with Edirol UA-25.
> 
> The alsa hw interface refuses to open at all in Pd for me with my device 
> in 24bit mode, fwiw.

That's a "known" limitation of Pd's ALSA interface, at least I
reported as Feature Request: "[ 1693533 ] Support 24Bit-soundcards in
Pd/ALSA" once. Pd's ALSA interface only knows about SND_PCM_FORMAT_S32
and SND_PCM_FORMAT_S16, while the format of most 24bit USB soundcards
is SND_PCM_FORMAT_S24_3LE.

Ciao
-- 
 Frank Barknecht                 _ ______footils.org_ __goto10.org__