[linux-audio-user] Green's Function in Audio --- Demo Song

[Erik de Castro Lopo]

On Sat, 14 Aug 2004 12:28:36 -0700
davidrclark at earthlink.net wrote:

> From your web page, it *appears* that you are using the sinc method
> developed by Julius Smith of Stanford.  

Basically yes.

> Smith's method is very
> fast, but not as accurate as FFT/overlap with large windows.  Without
> Kaiser windowing, it wouldn't have seen the light of day due to the
> truncation effects. 

I do use a Kaiser but unlike JOS, I optimize the beta value for
a number of factors that the JOS paper seems to neglect.

> I need something that preserves the phase and
> other information as accurately as possible between the channels,
> not a small-windows approximation.  

SRC preserves phase.

> I need a guarantee of accuracy,
> and I simply didn't have the time to fully investigate the sinc
> method with Kaiser and other windows. 

I have been meaning (at least since I first released SRC) to 
write up some documentation on how SRC is tested, but I've 
been a little busy doing other things :-).

> That was probably a longer answer than you anticipated, but I hope
> I answered your question.  

Yes, thanks very much.

Erik

-- 
+-----------------------------------------------------------+
  Erik de Castro Lopo  nospam at mega-nerd.com (Yes it's valid)
+-----------------------------------------------------------+
`If you want a vision of the future, it is a wireless broadband
 network feeding requests for foreign money-laundering assistance
 into a human temporal lobe, forever. With banner ads.'
 -- John M. Ford