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csound frontpage

Date1999-02-04 13:28
Fromtolve
Subjectcsound frontpage
Re:
http://mitpress.mit.edu/e-books/csound/frontpage.html

provides a wonderful look at the new csound book (slated for Sept 1999
release) but where did all the links, FAQ and other csound frontpage stuff
go? or am i confusing the new csound frontpage url?

tolve




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a couple have written privately to save me embarassment with respect to my
failure to select a screen resolution (the request is *clearly* displayed
at upper left) on csound frontpage. i'll broadcast it anyway.

have never run into a request displayed on a page that was in itself a
window to a functioning site -have usually encountered a clear prerequisite
for entrance to main site. though the site is quite wonderful, the book
pages informative, and i suppose MIT is paying the bills, my guess is that
unless the layout is modified, thousands will follow in my (lacking) mouse
clicks. simply monitoring hits for a couple of weeks should prove or
disprove. though i have now soiled such a potential study with this tip-off.

here again is the url.
http://mitpress.mit.edu/e-books/csound/frontpage.html

i *do* appreciate MIT's contribution.

tolve




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Hi,
I see that pitchbend works at last in Winsound 3.511 !!!!!! These are
great news for me certainly, Ive been wayting that fix for a long time...
congratulations to the development team for such an achievement ;-)

Josep M Comajuncosas



jpff@maths.bath.ac.uk wrote:

> Message written at 1 Feb 1999 07:20:25 +0000
>
> I have just placed code and sources for version 3.511 onto the
> server.  This is a collection of small but significant bug fixes.
> More on pitchbend






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Hi,
I see that pitchbend works at last in Winsound 3.511 !!!!!! These are
great news for me certainly, I=B4ve been wayting that fix for a long time=
...
congratulations to the development team for such an achievement ;-)

Josep M Comajuncosas



jpff@maths.bath.ac.uk wrote:

> Message written at 1 Feb 1999 07:20:25 +0000
>
> I have just placed code and sources for version 3.511 onto the
> server.  This is a collection of small but significant bug fixes.
> More on pitchbend






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Hi,
I=B4d like to know if there is any way to get the duration of a MIDI even=
t
from a MIDI file from Csound itself (without MIDI2Csound...) to be used
as a p3 field in the orchestra. Thanks in advance!

Josep M Comajuncosas



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From: Hans Mikelson 
To: Csound 
Subject: Nested All Pass Filters
Date: Thu, 4 Feb 1999 21:09:33 -0600
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Hi,

I have a version of nested all pass filters working but it only allows
i-rate parameters and no initial delay.  If I make the parameters k-rate the
cannot be optional as far as I know.

aout   nestedap  asig, imode, idelay1, igain1 [, idelay2, igain2, idelay3,
igain3]

If I do it k-rate it would be something like:

aout   nestedap  asig, kdelay1, kgain1, kdelay2, kgain2, kdelay3, kgain3,
kpredelay, imode, imaxdelay

It seems like a lot of paramters to include all the time and it may take a
while to get going.  I could go with what I have and write nestedapk1,
nestedapk2, nestedapk3 later.  Any suggestions?

Bye,
Hans Mikelson



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From: Richard Karpen 
To: Hans Mikelson 
cc: Csound 
Subject: Re: Nested All Pass Filters
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I made a change a few months ago to allow for k-rate optional arguments. I
think I passed this along to John F. but I don't remember if I did. John,
did I?

Richard Karpen


On Thu, 4 Feb 1999, Hans Mikelson wrote:

> Hi,
> 
> I have a version of nested all pass filters working but it only allows
> i-rate parameters and no initial delay.  If I make the parameters k-rate the
> cannot be optional as far as I know.
> 
> aout   nestedap  asig, imode, idelay1, igain1 [, idelay2, igain2, idelay3,
> igain3]
> 
> If I do it k-rate it would be something like:
> 
> aout   nestedap  asig, kdelay1, kgain1, kdelay2, kgain2, kdelay3, kgain3,
> kpredelay, imode, imaxdelay
> 
> It seems like a lot of paramters to include all the time and it may take a
> while to get going.  I could go with what I have and write nestedapk1,
> nestedapk2, nestedapk3 later.  Any suggestions?
> 
> Bye,
> Hans Mikelson
> 
> 



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>I just checked Winsound 3.50: it runs the bach orc/sco in around 7
>seconds, on my PII 333 (NT4), with message-level = 0. So unless
>something has gone very wrong with 5.111, the fishiness seems to be
>local to your machine. Did you hit the Turbo button, and run with an
>8MHz clock? :-)


It seems to be only Winsound but the sluggishness exists with both v3.50 and
v3.511.  I'm running Win95 on this system.  Other programs I have tried do
not show such sluggishness as far as I can tell.  A virus scan did not turn
up anything.  I'll have to try and find some type of tune up utility and see
if I can figure out what's wrong.  Anyone else having problems?

Bye,
Hans Mikelson



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> I'm a csound novice.  I am trying to use pvanal and lpanal for the first
> time (on PPC version) and "perf" (the csound engine) continues to
> terminate aft er the analysis starts in both utitlities.  I have
> included the debug output if you want to look at it.  The soundfile is a
> two channel aiff file of a violin chord (although I realize you can only
> analyze 1 channel at a time).  I have also now attempted analyzing other
> samples, including sound files from the tutorials, and I am having the
> same problems.  What sort of things would cause these problems--the
> examples I was looking at were very basic and didn't suggest that I
> needed to do anything special to get these programs to work.    If
> anyone can tell what's wrong, please let me know.

  PVANAL Debug:

Csound Version 3.494 (Jan 12 1999)
util PVANAL:
Hd:Desktop Folder:Documents:Csound:Samples:Itzhak:1st dm chord: AIFF,
441000 stereo samples, baseFrq 261.6 (midi 60), gain 0 db, no looping
audio sr = 44100, stereo, reading channel 1
analyzing 112896 sample frames (2.6 secs)
256 infrsize, 64 infrInc
1762 output frames estimated
pvanal error: cannot create output file
Usage: pvanal [-n] [-w | -h] [-g | -G]
[-v | -V txtfile] inputSoundfile outputFFTfile

FATAL ERROR: terminated perf.


LPANAL Debug:

Csound Version 3.494 (Jan 12 1999)
util LPANAL:
Reading sound from Hd:Desktop Folder:Documents:Csound:Samples:Itzhak:1st
dm chord, writing lpfile to Hd:Desktop
Folder:Documents:Csound:Analyses:1st dm chord lpc analysis
poles=34 hopsize=200 begin= 0.0 duration= 2.6
lpheader comment:

pch track range:  40.0 - 2000.0 Hz
Using pole storage method
Hd:Desktop Folder:Documents:Csound:Samples:Itzhak:1st dm chord: AIFF,
441000 stereo samples, baseFrq 261.6 (midi 60), gain 0 db, no looping
audio sr = 44100, stereo, reading channel 1
analyzing 112896 sample frames (2.6 secs)
displays suppressed
1      4.0482    180.6198      0.0005    126.6495
2      3.9809    171.7748      0.0005    131.5365
3      3.9335    182.3178      0.0005    300.1466
4      4.3481    168.5952      0.0007    126.0627
5      4.3248    165.1880      0.0007    130.3672
6      4.1133    168.1751      0.0006    126.7047

[similar lines 7 through 554 omitted.]

555   48.8559    908.7750      0.0029    441.5818
556   45.4724    856.7306      0.0028    432.5786
557   45.0735    774.8779      0.0034    438.0193
558   39.0534    710.4831      0.0030    434.2286
559   29.0192    635.5322      0.0021    431.1595
560   42.6790    530.0263      0.0065    438.6337
561   34.7915    322.5636      0.0116    433.5921
gauss: ill-conditioned
FATAL ERROR: terminated perf.


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I'm a novice.  I am trying to use pvanal and lpanal for the first time
and "erf" continues to terminate.  I have included the debug output for
you to look at.  The sound file is a two channel aiff file of a violin
chord.  What sort of things would cause these problems--the examples I
was looking at were very basic and didn't suggest that I needed to do
anything special to get these programs to work.  (Re: the pvanal abort
message, I did have the default "analysis" folder set.)  I have also
just now downloaded 3.51 and I got the same errors.  Please let me know
what you think.

BTW thanks for all of your outstanding work on the PPC version. -David



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Any new opcode is welcome, but I think a nested allpass filter is not enough
generic, I think the basic idea os a delay line inside another delay line ,
something which is not possible with the current deltap/delayw implementation,
would be more interesting as a general tool. I suggested something like a tapw
opcode some months ago, to inject audio signals inside a delay line, this could
do the job, or maybe making the delayw opcode linked to a particular delayr
unit, something like

atemp1 delayr itime1;main delay line
(...)
atemp2 delay itime2;inner delay line
(...)

delayw (...),atemp2 ; write (...) into atemp2 - if atemp1 is not present it
should work as the existing delayw unit
delayw (...),atemp1 ; write (...) into atemp1


Hans Mikelson wrote:

> Hi,
>
> I have a version of nested all pass filters working but it only allows
> i-rate parameters and no initial delay.  If I make the parameters k-rate the
> cannot be optional as far as I know.







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Date: Fri, 05 Feb 1999 11:04:29 +0100
From: Josep M Comajuncosas 
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To: Richard Karpen 
CC: Csound 
Subject: Analysis/Resynthesis in the orc file
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Hi,
I thought R. Karpen was trying to recode the usual pvoc, adsyn , convolve & lpc
stuff to allow them to be called from the orchestra file itself, thus skipping the
need to prepare this material prior to compilation. Any news regarding this?
Thanks in advance!

Josep M Comajuncosas