[PD] Natty SPDIF samplerate 44.1k / 48k problem (OSS)

Ingo ingo at miamiwave.com
Thu Nov 10 17:40:16 CET 2011


It's not the HDSP that's causing the problems. It's a realtek onboard
souncard. The HDSP was used on another (WinXP) computer and only served as
an input to check the output of the linux machine.

Ingo

________________________________________
Von: pd-list-bounces at iem.at [mailto:pd-list-bounces at iem.at] Im Auftrag von
tim vets
Gesendet: Donnerstag, 10. November 2011 17:15
An: IOhannes m zmoelnig
Cc: pd-list at iem.at
Betreff: Re: [PD] Natty SPDIF samplerate 44.1k / 48k problem (OSS)

Concerning your soundcard, you sould have HdspConf installed, no? There you
can simply choose the samplerate with buttons.
I don't have any experience with SPDIF, but I did recently started using an
ADAT (optical) device with the HDSP/Hammerfall, for inputs. 
In my case, you have to set the ADAT device to 48 or 44.1 with a physical
switch on the back, and have the soundcard sync to that. (also a setting in
HdspConf)
However, it seems like at 44.1kHz it's a lot less stable, it keeps losing
sync and resyncing all the time, at least that's what the gui shows, but
afaict it has no effect on the sound...
Lastly: I wonder if there isn't a way to downsample some subpatches to
playback the 44.1kHz soundfiles in a 48kHz environment?
gr,
Tim

2011/11/10 IOhannes m zmoelnig <zmoelnig at iem.at>
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On 2011-11-10 13:10, Ingo wrote:
> Hi everybody,
>
> I need some help about sample rate settings.
>
> I would like to use my SPDIF Out with Pd. Unfortunately it looks like
either
> the soundcard or the audio system (OSS) starts up with 48,000 Hz while Pd
is
> set to use 44,100 Hz (that's necessary because of the samples being at
> 44.1k).
i was going to say: you can change the samplerate of Pd to 48kHz using
the Media->Audio menu. it will magically shorten each sample from
(1/44.1)ms to (1/48)ms, so you don't need to worry about that.

but then, maybe you meant your soundfiles?

fgamsdr
IOhannes
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