Csound Csound-dev Csound-tekno Search About

Re: proliferation of headers

Date1997-08-13 17:49
From"Jim Stevenson Ph.D"
SubjectRe: proliferation of headers
What has happened to this list?

Many posts have several levels of forwarded headers to wade through.

Thanks.



Received: from stork.maths.bath.ac.uk by omphalos.maths.Bath.AC.UK id aa14000;
          13 Aug 97 22:20 BST
Received: from pat.bath.ac.uk by stork.maths.Bath.AC.UK id aa25342;
          13 Aug 97 22:19 BST
Received: (qmail 20514 invoked from network); 13 Aug 1997 21:19:41 -0000
Received: from hermes.ex.ac.uk (144.173.6.14)
  by pat.bath.ac.uk with SMTP; 13 Aug 1997 21:19:41 -0000
Received: from noether [144.173.8.10] by hermes via SMTP (WAA23150); Wed, 13 Aug 1997 22:11:46 +0100
Received: from hermes.ex.ac.uk by maths.exeter.ac.uk; Wed, 13 Aug 97 22:11:37 +0100
Received: from root@csc-sun.math.utah.edu [128.110.198.2] by hermes via ESMTP (WAA22653); Wed, 13 Aug 1997 22:11:34 +0100
Received: from sunscreen.math.utah.edu (rackl@sunscreen.math.utah.edu [155.99.144.58])
	by csc-sun.math.utah.edu (8.8.5/8.8.5) with ESMTP id PAA15877;
	Wed, 13 Aug 1997 15:12:12 -0600 (MDT)
From: Les Rackl 
Received: (from rackl@localhost)
	by sunscreen.math.utah.edu (8.8.5/8.8.5) id PAA01953;
	Wed, 13 Aug 1997 15:12:12 -0600 (MDT)
Date: Wed, 13 Aug 1997 15:12:12 -0600 (MDT)
To: doug cross 
Cc: Burton Alexandre , csound@maths.ex.ac.uk
Subject: Re: simple problem
In-Reply-To: Your message of Tue, 12 Aug 1997 12:34:41 -0700
Message-Id: 
Sender: owner-csound-outgoing@maths.ex.ac.uk
Precedence: bulk

> i have been playing around with this orc and sco to produce some sound
> examples  and i've found something curious. when i ask for a sweep
> between 800hz and 150000hz there is a strange folding over of the
> sound.(starts to play backwards). I've found a number below 10000hz
> avoids this problem but I'm just a bit confused. 
> ;sweep.orc
> ;-------------------------------
> sr = 44100
> kr = 4410
> ksmps = 10
> nchnls = 1
> 
> instr 1

...

> ;sweep.sco
> ;-------------------------------
> f3 0 8192 7 -1 4096 1 4096 -1 ; -- triangle
> 
> i1              0          5          2.2      800        15000   
> 10          .5;c
> e


Complete guess, but intuition suggests somesortof foldover/aliasing
from kr=4410 or table size=8192.

Again, right off the top of my head, with no thought whatsoever.


les



---------------------------------------------------------------------
Les Rackl                                         rackl@math.utah.edu
                                      http://www.math.utah.edu/~rackl
---------------------------------------------------------------------