Re: Multi Channel FFT Audio Anaylzer + Question
Re: Multi Channel FFT Audio Anaylzer + Question
- Subject: Re: Multi Channel FFT Audio Anaylzer + Question
- From: Ian Ollmann <email@hidden>
- Date: Wed, 27 Jun 2007 10:26:56 -0700
On Jun 26, 2007, at 3:38 PM, Benjamin Federer wrote:
Hi Ian,
first of all I'd like to say thank you for all the information you
provided. I am sorry if this is getting off topic in the meantime.
Maybe someone could point me to a more appropriate mailing list that
discusses the Accelerate framework and/or especially the vDSP
library. One thing I am unsure of is about the vector alignment:
The most common reason to fall into scalar code is that your data
is not aligned properly. Check that first. Different parts of
Accelerate.framework require different levels of alignment.
The vDSP library shows some sample code that uses the "vec_malloc"
statement. Unfortunately I could not get Xcode to like it. Instead I
had to use "malloc". Frank Schoep's homepage states the use of a
"__attribute__ ((aligned))" postfix for GCC. I could not manage to
find any specific information about vector alignment in the vDSP
documentation. Any clues?
malloc() should work fine for anything that you might have used
vec_malloc() for. If you still have a link to the web page that
describes vec_malloc() file a bug report. We should probably strike
that from the docs.
Ian
_______________________________________________
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