Forums > MaxMSP

Using sfplay~ to playback multichannel

November 29, 2006 | 5:52 pm

hey,
I’m making an audio / video patch that will playback audio samples over a 4 channel system. I’ve only ever used sfplay~ to playback mono / stereo files so far. I have an older version of the patch that plays the audio with 4 channel using 4 seperate sfplay~ objects. However, expanding the patch, I want to have several 4 channel samples playing at once, so I’ve trying to use 1 sfplay~ object per sample… this leads me to a couple of puzzlers…

-Is it possible to make 1 sfplay~ object playback 4 seperate audio files? (at present they are all mono)

- If not, does anyone know how I can compile the 4 mono samples into a 4 channel sample? – again, all my experience using audio editors has been mono / stereo, so its not a process I’m too familiar with.

I’d be very grateful for any help.
thanks very much
Tom


November 29, 2006 | 6:26 pm

On 29 nov. 06, at 17:52, register wrote:

> -Is it possible to make 1 sfplay~ object playback 4 seperate audio
> files? (at present they are all mono)

As far as I know, this is not possible.

> – If not, does anyone know how I can compile the 4 mono samples
> into a 4 channel sample? – again, all my experience using audio
> editors has been mono / stereo, so its not a process I’m too
> familiar with.

Assuming you’re on MacOS X, you may try that:

http://www.apple.com/downloads/macosx/audio/soundfilesmerger.html

Best,
ej


November 29, 2006 | 6:31 pm

>- If not, does anyone know how I can compile the 4 mono samples into a 4
>channel sample? – again, all my experience using audio editors has been
>mono / stereo, so its not a process I’m too familiar with.

You can use Emmanuel Jourdan’s SoundFilesMerger < http://www.e–j.com/>

/J


November 29, 2006 | 6:31 pm


November 29, 2006 | 7:04 pm

Use EJ’s SoundFilesMerger to create multi-channel audiofiles:

http://www.e–j.com/sphpblog/


November 30, 2006 | 2:50 pm

Amadeus opens 4-ch sound files but I doesn’t play.
Audacity can open and play it,
but I’m afraid It can only save stereo wave files.

I guess using 4 times sfplay~ in a sub-patch
will be less work.

———- Forwarded message ———-
From: Meriol Lehmann
Date: 29/11/2006 20:04
Subject: [maxmsp] Re: Using sfplay~ to playback multichannel
To: maxmsp@cycling74.com

Use EJ’s SoundFilesMerger to create multi-channel audiofiles:

http://www.e–j.com/sphpblog/

Meriol Lehmann
Technical Director
AVATAR – Association de création et de diffusion sonores et électroniques
lenomdelachose.org
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November 30, 2006 | 3:33 pm

I didn’t mention this before because it isn’t free, but I bought
Sample Manager specifically to join and separate multi channel files
- quickly.

http://www.audiofile-engineering.com/sample_manager.php

It runs without limitation for 15 days, so if you only needed to
merge/split files …. ;-)

David

On 30 Nov 2006, at 14:50, bbarros wrote:

> Amadeus opens 4-ch sound files but I doesn’t play.
> Audacity can open and play it,
> but I’m afraid It can only save stereo wave files.
>
> I guess using 4 times sfplay~ in a sub-patch
> will be less work.
>
>


November 30, 2006 | 3:47 pm

On 30 nov. 06, at 15:50, bbarros wrote:

> Audacity can open and play it,
> but I’m afraid It can only save stereo wave files.

As I wrote before, you have to change the preferences in Audacity to be
able to save multi tracks files. BTW, you also have of course to use
"Export As…".

_____________________________
Patrick Delges

Centre de Recherches et de Formation Musicales de Wallonie asbl

http://users.skynet.be/crfmw/max


December 1, 2006 | 3:55 am

sorry, I didn’t see it.
Good to know, anyway.

2006/11/30, Patrick Delges

:
>
>
> On 30 nov. 06, at 15:50, bbarros wrote:
>
> > Audacity can open and play it,
> > but I’m afraid It can only save stereo wave files.
>
> As I wrote before, you have to change the preferences in Audacity to be
> able to save multi tracks files. BTW, you also have of course to use
> "Export As…".
>
> _____________________________
> Patrick Delges
>
> Centre de Recherches et de Formation Musicales de Wallonie asbl
> http://users.skynet.be/crfmw/max
>
>


December 1, 2006 | 2:23 pm

Patrick Delges wrote:
> As I wrote before, you have to change the preferences in Audacity to be
> able to save multi tracks files. BTW, you also have of course to use
> "Export As…".

You didn’t mention that you need the newest beta for that, the official
stable version can’t do it…

Stefan


Stefan Tiedje————x——-
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