Re: Dithering??
Re: Dithering??
- Subject: Re: Dithering??
- From: Ryan Gilligan <email@hidden>
- Date: Tue, 16 Sep 2008 16:18:01 -0400
I'm fully aware of what dithering is and when it should be applied.
I'm just looking for an easy way to burn a redbook cd from these hi
res files. Ideally, they would be converted to 44.1 and dithered down
to 16 bit before they get burned. Toast can't handle 88.2 without a
ton of terrible distortion over the whole track. Of course none of
this would be an issue if the damn Tascam DV-RA1000 HD would burn
redbooks by itself.
Thanks all.
On Sep 16, 2008, at 3:55 PM, Brian Willoughby wrote:
I have two comments.
Dithering should only be done once, and only as the last step, and
that is why the CoreAudio SRC does not apply dithering. There's
just no way for the AudioConverter to know whether dithering would
be appropriate in each individual case.
Unfortunately, CoreAudio does not provide everything you might need
as an audio developer, and dithering is one of the things you will
have to develop or license yourself. MusicDSP.org might be a good
place to start for a variety of basic dithering algorithms. More
advanced dither such as POW-r are available as part of commercial
software, so you might need to look into automated DAW software with
scripting if you don't want to write or license code.
For QuickTime questions, there is a QT mailing list. My guess is
that it's doubtful they're applying dither in QuickTime.
Brian Willoughby
Sound Consulting
On Sep 16, 2008, at 12:42, Ryan Gilligan wrote:
I just got a demo of a new audio conversion program called Sound
Grinder, which apparently uses the built in Core Audio SRC to
convert sample rates. I will be converting 88.2 24 bit wav files
down to 44.1 16 bit to burn redbook cd's. The developer of Sound
Grinder believes that the current Core Audio SRC would not do any
dithering to accomplish this. Is this true? Does the Core Audio API
simply not include any dithering?
Also, I'm not sure if this is beyond the realm of this particular
mailing list, but does the Quicktime SRC use dithering? Its pretty
much a necessity for what I need to do, which is batch converting
lots of these files, with no artifacts in the 16 bit files.
I hope someone can help! Thank you!
Ryan Gilligan
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Coreaudio-api mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden