introduction to digital sound processing

In article 3ffb54d6.125401640@news.west.earthlink.net, Rick Lyons at
r.lyons@REMOVE.ieee.org wrote on 01/06/2004 20:37:

> On Mon, 05 Jan 2004 23:02:47 GMT, Randy Yates <yates@ieee.org> wrote:
> 
> (snipped)
>> 
>> And if you're hesitating about buying Rick's book, he is coming out with
>> a new edition soon (as he mentioned in another thread). Rick, when is
>> this coming?
> 
> Hi Randy,
> well, ... the plan (according to my publisher)
> is for the 2nd edition to be printed in March
> of this year.
> 
> The 2nd edition is a modest expansion of some
> of the topics in the 1st edition, plus new material
> on quadrature signals and sample rate conversion
> (That phrase "sample rate conversion" is used
> instead of "digital resampling" because of
> you Randy.)   The "Digital Signal Processing Tricks"
> Chapter has been expanded from 12 topics to
> 33 topics, thanks to what you guys here have taught
> me and other things I've encountered on the Internet
> and in magazines.
> 
> The 2nd edition will have roughly 200 more pages
> than the 1st edition.

hey Rick, are you including the better approximations to arctan() that i
sent you a while back?  no need to, but i thought i'd ask.  sorry that i
didn't have much to offer on the IIR filtering.

r b-j

On Wed, 07 Jan 2004 00:49:54 -0500, robert bristow-johnson
<rbj@surfglobal.net> wrote:

  (snipped)
>
>hey Rick, are you including the better approximations to arctan() that i
>sent you a while back?  no need to, but i thought i'd ask.  sorry that i
>didn't have much to offer on the IIR filtering.
>
>r b-j
>

Hi R B-J,

  I don't have my notes nearby, but I 
don't think I did.

Well, I sure appreciate the guidance you 
gave me.  I listed you in the Acknowledgements
(along with the other helpful guys) 
and "all the guys on comp.dsp" are in the 
Dedication.

I've learned a heck of a lot from you 
guys.  I want ya' to know that.

[-Rick-]
 

r.lyons@REMOVE.ieee.org (Rick Lyons) wrote in message news:<3ffd5167.14598578@news.west.earthlink.net>...
> On Wed, 07 Jan 2004 00:49:54 -0500, robert bristow-johnson
> <rbj@surfglobal.net> wrote:
> 
>   (snipped)
> >
> >hey Rick, are you including the better approximations to arctan() that i
> >sent you a while back?  no need to, but i thought i'd ask.  sorry that i
> >didn't have much to offer on the IIR filtering.
> >
...
>   I don't have my notes nearby, but I 
> don't think I did.

that's too bad.  for all the effort of doing a division in the first
place, the extra cost of one or two more terms in the denominator
would sure make that arctan() work better.  i guess i'll just have to
post it (but i gotta find it).

> Well, I sure appreciate the guidance you 
> gave me.  I listed you in the Acknowledgements
> (along with the other helpful guys) 
> and "all the guys on comp.dsp" are in the 
> Dedication.
> 
> I've learned a heck of a lot from you 
> guys.  I want ya' to know that.

that's fine and good, Rick.  we appreciate being appreciated.  but you
shoulda included the arctan() with more terms in the denominator.  it
would make it a lot better.

best regrads,

r b-j