In the following orc file we specify pan values (in ga10lrpan) from 0 to 1
and end up using these pan values as indices into f table 2 (normalized
indexing mode), but something goes wrong.  When we pan hard left or right
the sound drops out!  In between everything sounds as it should.  We are
set up to run in realtime (using stdin) so we use instr 20 to modify amp,
freq cutoff and most importantly, pan of instr 10.  Values sent to p6 of
instr 20 are in the range 0 to 1.  The problem occurs when p6 is 0 or 1. 
Here's the orc and sco:

orc--------------------------------------------------
	sr = 44100
	kr = 441 
	ksmps = 100
	nchnls = 2

	gi10cutoff = 0
	gi10amp = 0

	instr 20 ; Used to control instr 10 in realtime
	gi10amp = ampdb(p4)
	gi10cutoff = p5
	ga10lrpan init p6
	endin

	instr 10
	; Init pass
	gi10amp = ampdb(p4)
 	gi10cutoff = p5

	asrc loscil gi10amp, p7, 1, 0, 1, 0, 336482
	afltr tone asrc, gi10cutoff

	alt tablei 1 - ga10lrpan, 2, 1, 0, 0
	art tablei ga10lrpan, 2, 1, 0, 0
		outs afltr * alt, afltr * art
	endin

sco----------------------------------------------------------
f 1 0 0 1 "fire.aiff" 0 4 1 
8192 1 f 2 0 8193 9 .25 1 0 ; The first quadrant of a sine 

; IMPORTANT!!! The next line "pauses" processing of this file
;  so that the EOF won't be reached.  This gives 
; our application time to output score events. 
f 0 3600
---------------------------------------------------------


Thanks for the help,

John Beahan 












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Date: Tue, 8 Jul 1997 16:20:51 -0700 (PDT)
From: Mike Berry 
To: John Francis Beahan 
Cc: csound mail list , 
    David Marsh 
Subject: Re: pan/ftable problem
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	The problem is that you are using an ftable with a guard point.
The guard point is a duplication of the first point, in this case 0.  Thus
a normalized index of 1 retrieves a zero instead of the 1 that you would
expect.  Make the f card:

f2 0 8192 9 .25


Mike Berry
mikeb@mills.edu
http://www.mills.edu/PEOPLE/gr.pages/mikeb.public.html/mikeb.homepage.html












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From: james@maths.ex.ac.uk
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Subject: test please ignore
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this is test of new antispam measures for the csound list
-- 
James Andrews, maths CDO, ext.3977

	The problem is that you are using an ftable with a guard point.
The guard point is a duplication of the first point, in this case 0.  Thus
a normalized index of 1 retrieves a zero instead of the 1 that you would
expect.  Make the f card:

f2 0 8192 9 .25


Mike Berry
mikeb@mills.edu
http://www.mills.edu/PEOPLE/gr.pages/mikeb.public.html/mikeb.homepage.html