hello list,
I am trying to use writesf~ to record 24/96 sound files but it seems that any bit depth other than 16 is causing distortion. I'm using pd 0.38-3 from Miller's site on a powerbook with os 10.2, and I'm using audacity for playing back the files. In addition I have the same distortion when loading a perfectly fine 24 bit file into an array.
Hi Alexandre,
Which OS and which file format are you using? I'm unsure about the 24-bit format in general, and would be happy to try to test this on my rig.
cheers Miller
On Wed, Aug 10, 2005 at 09:56:19PM -0400, alexandre matheson wrote:
hello list,
I am trying to use writesf~ to record 24/96 sound files but it seems that any bit depth other than 16 is causing distortion. I'm using pd 0.38-3 from Miller's site on a powerbook with os 10.2, and I'm using audacity for playing back the files. In addition I have the same distortion when loading a perfectly fine 24 bit file into an array.
PD-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
24 bit has never worked in pd on my mac g4 , os 10.3...all i get is really loud static
but as i've said before, my ears are only 16bit anyway...so it's not big deal for me.
On Jeudi, août 11, 2005, at 01:08 am, Miller Puckette wrote:
Hi Alexandre,
hi,
Which OS and which file format are you using
I'm using Mac os 10.2, I've tried using .aiff and .wave. Could this be a hardware issue? I have had this problem on a m-audio delta 44, and the powerbooks onboard soundcard.
I'm unsure about the 24-bit format in general, and would be happy to try to test this on my rig.
Thanks, I have attached my patch.
cheers Miller
On Wed, Aug 10, 2005 at 09:56:19PM -0400, alexandre matheson wrote:
hello list,
I am trying to use writesf~ to record 24/96 sound files but it seems that any bit depth other than 16 is causing distortion. I'm using pd 0.38-3 from Miller's site on a powerbook with os 10.2, and I'm using audacity for playing back the files. In addition I have the same distortion when loading a perfectly fine 24 bit file into an array.
PD-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
PD-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
alex
my attachment didn't work, I'll try again
On Jeudi, août 11, 2005, at 10:20 pm, alexandre matheson wrote:
On Jeudi, août 11, 2005, at 01:08 am, Miller Puckette wrote:
Hi Alexandre,
hi,
Which OS and which file format are you using
I'm using Mac os 10.2, I've tried using .aiff and .wave. Could this be a hardware issue? I have had this problem on a m-audio delta 44, and the powerbooks onboard soundcard.
I'm unsure about the 24-bit format in general, and would be happy to try to test this on my rig.
Thanks, I have attached my patch.
cheers Miller
On Wed, Aug 10, 2005 at 09:56:19PM -0400, alexandre matheson wrote:
hello list,
I am trying to use writesf~ to record 24/96 sound files but it seems that any bit depth other than 16 is causing distortion. I'm using pd 0.38-3 from Miller's site on a powerbook with os 10.2, and I'm using audacity for playing back the files. In addition I have the same distortion when loading a perfectly fine 24 bit file into an array.
PD-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
PD-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
alex
PD-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
Well, I didn't try your patch (not sure but it looked like I'd have to sample something and I didn't have audio) but I did try writing a 3-byte, 1-channel wave file to disk using writesf~ and looked at it in peak (no audacity on the Mac I squat on) and it looked OK. Values above 1 or below -1 clip, as usual (some people have suggested that 24-bit files should be normalized to 16 instead of one, i.e., 4 bits of "headroom", but Pd and peak seem to agree that [-1,1] is the nominal range).
So unless it's an overflow at the input of writesf~ I'm stumped.
cheers Miller
On Thu, Aug 11, 2005 at 10:32:54PM -0400, alexandre matheson wrote:
my attachment didn't work, I'll try again
OK... well, I don't seem to have this problem on my linux machine... will have to try it on a macintosh next time I get in the vicinity of one (maybe Monday...)
cheers Miller
On Thu, Aug 11, 2005 at 10:20:34PM -0400, alexandre matheson wrote:
On Jeudi, août 11, 2005, at 01:08 am, Miller Puckette wrote:
Hi Alexandre,
hi,
Which OS and which file format are you using
I'm using Mac os 10.2, I've tried using .aiff and .wave. Could this be a hardware issue? I have had this problem on a m-audio delta 44, and the powerbooks onboard soundcard.
I'm unsure about the 24-bit format in general, and would be happy to try to test this on my rig.
Thanks, I have attached my patch.
cheers Miller
On Wed, Aug 10, 2005 at 09:56:19PM -0400, alexandre matheson wrote:
hello list,
I am trying to use writesf~ to record 24/96 sound files but it seems that any bit depth other than 16 is causing distortion. I'm using pd 0.38-3 from Miller's site on a powerbook with os 10.2, and I'm using audacity for playing back the files. In addition I have the same distortion when loading a perfectly fine 24 bit file into an array.
PD-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
PD-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
alex
PD-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
-
alexandre matheson -
hard off -
Miller Puckette