Re: Fortissimo IV works great with 44.1khz material, not great at all in 48khz

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On Fri, 13 Oct 2006 09:59:32 -0400
Lee Revell <rlrevell@xxxxxxxxxxx> wrote:

> On Fri, 2006-10-13 at 15:46 +0400, Elie Morisse wrote:
> > Hi,
> > 
> > I make my Fortissimo IV running by passing the model="ms300" option to the snd-ice1724 module ( https://bugtrack.alsa-project.org/alsa-bug/view.php?id=1556 ). It works flawlessly on 44.1khz material, but horribly on 48khz, so *i can't watch movies for now* :(.. I don't exactly know how to describe it, it's too fast, and at the same time choppy on some players such as xine. I tryed everything in xine and alsa mixer options, nothing helps, and also  GStreamer and Mplayer do the same. Something weird about MPlayer is that it resamples even 44.1khz sound to 48khz :
> > 
> > ==========================================================================
> > Opening audio decoder: [mp3lib] MPEG layer-2, layer-3
> > AUDIO: 44100 Hz, 2 ch, s16le, 128.0 kbit/9.07% (ratio: 16000->176400)
> > Selected audio codec: [mp3] afm: mp3lib (mp3lib MPEG layer-2, layer-3)
> > ==========================================================================
> > alsa-init: using device default
> > alsa: 48000 Hz/2 channels/4 bpf/65536 bytes buffer/Signed 16 bit Little Endian
> > AO: [alsa] 48000Hz 2ch s16le (2 bytes per sample)
> > 
> > ..and plays ok if I pass "-af resample=44100:0:0" as option.
> > What am I doing wrong ? Is there a workaround ? And.. will you ever support Fortissimo IV ?
> 
> Maybe you need to use alsamixer to set the clock rate to 48000?
> 
> Lee
> 
> 
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FWIW - I do need to set clock in 'alsamixer' to 32000Hz when I use 'openwengo'
VOIP application - with 44100Hz the symptoms are similar to the ones described
by Elie Morisse.

So, changing sample rate is definitely worth trying.

--Sergei.

-- 
Visit my http://appsfromscratch.berlios.de/ open source project.

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