| Hi
I think repluck may work as a variant of the Karplus-Strong model. Aexcite
is simply a continuous signal feed to the string model, thus the model
conferes its resonances to the incoming signal. If aexcite is a burst of
filtered noise it should not be very different from the pluck opcode...
but I´ve not looked at the sources.
I´ve used it to simulate coupled strings and works fine-
Josep M Comajuncosas
nunativs wrote:
> Hi,
> A short question, in the repluck opcode what is the aexcite signal
> supposed to be?
> Thanks,
> Ken
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Date: Thu, 08 Oct 1998 16:52:28 +0200
From: Josep M Comajuncosas
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Subject: Another analog filter
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Hi people,
I ported this peaking lowpass from an article by Jon Dattori about
effect design in JAES´97. The filter itself (12 dB) is not very
impressive and don´t expect to get too much resonance from it. But it
works and has a nice character.It may also be something wrong because I
cannot hear any difference beetwen the 12dB and the 24dB version... ,
I must look at the spectra...
Enjoy it!
Josep M Comajuncosas
sr = 44100
kr = 44100
ksmps = 1
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
instr 1; peaking 12dB/oct. LPF (Analog lowpass)
; based on Jon Dattorio / JAES vol.45 n.9 Sept 1997
; ported to Csound by Josep M Comajuncosas / Oct.´98
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; NOTE : apparently the cutoff and the resonance
; are not decoupled (nor tuned in fact) at all...
; use them *empyrically*
ibound = 10000
imaxamp = 10000
kfreq init 150
kamp linen 1,.01,p3,.1
apulse1 buzz kamp, kfreq, ibound/kfreq, 1
asaw filter2 apulse1, 1, 1, 1, -.99
; the filter itself
i2pidsr = 2*3.14159265359 / sr
; freq. cutoff
kfco expseg 20, .2, 8000, p3-.2, 20
kfcon = kfco*i2pidsr
kfc = 2*sin(kfcon/2)
; Q (resonance) : stability guaranteed for kqc in [0,1]
; though you can try to go further (>1) at your own risk
kqc = p4
ay4 init 0
ay5 init 0
ay7 init 0
ay8 init 0
ax = asaw/2
ay1 = ax - ay5 - ay7
ay2 = kfc*ay1
ay3 = ay2+ay4
ay4 delay1 ay3
ay5 = ay4*kqc
ay6 = ay5*kfc
ay7 = ay6+ay8
ay8 delay1 ay7
ay9 = ay8*2
; compression to allow a wider range for Q
; be careful, it acts also as a distorter! ;-)
;out tanh(ay9)*imaxamp
out ay9*imaxamp; skip compression
endin
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
instr 2; peaking 24dB/oct. LPF (Analog lowpass)
; like instr 1, but 2 cascaded filter units here
; based on Jon Dattorio / JAES vol.45 n.9 Sept 1997
; ported to Csound by Josep M Comajuncosas / Oct.´98
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; NOTE : apparently the cutoff and the resonance
; are not decoupled (nor tuned in fact) at all...
; use them *empyrically*
ibound = 10000
imaxamp = 10000
kfreq init 150
kamp linen 1,.01,p3,.1
apulse1 buzz kamp, kfreq, ibound/kfreq, 1
asaw filter2 apulse1, 1, 1, 1, -.99
; the filter itself
i2pidsr = 2*3.14159265359 / sr
; freq. cutoff
kfco expseg 20, .2, 8000, p3-.2, 20
kfcon = kfco*i2pidsr
kfc = 2*sin(kfcon/2)
; Q (resonance) : stability guaranteed for kqc in [0,1]
; though you can try to go further (>1) at your own risk
kqc = p4
ay4 init 0
ay5 init 0
ay7 init 0
ay8 init 0
ax = asaw/2
ay1 = ax - ay5 - ay7
ay2 = kfc*ay1
ay3 = ay2+ay4
ay4 delay1 ay3
ay5 = ay4*kqc
ay6 = ay5*kfc
ay7 = ay6+ay8
ay8 delay1 ay7
ay14 init 0
ay15 init 0
ay17 init 0
ay18 init 0
ax2 = ay8
ay11 = ax2 - ay15 - ay17
ay12 = kfc*ay11
ay13 = ay2+ay14
ay14 delay1 ay13
ay15 = ay14*kqc
ay16 = ay15*kfc
ay17 = ay16+ay18
ay18 delay1 ay17
ay19 = ay18*2
; compression to allow a wider range for Q
; be careful, it acts also as a distorter! ;-)
;out tanh(ay19)*imaxamp
out ay19*imaxamp; skip compression
endin
f1 0 8192 10 1
; p4 is the resonance control (0 to 1)
i1 0 2 .09
i1 2 2 .3
i1 4 2 .65
i1 6 2 1.1
s
i2 0 2 .09
i2 2 2 .3
i2 4 2 .65
i2 6 2 1.1
e
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From: Hans Mikelson
To: Csound
Subject: Csound E-Zine Update
Date: Thu, 8 Oct 1998 10:48:37 -0500
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Hi,
I've gotten a fantastic response to this idea. I will try to have the
deadline for the first issue December 15, 1998. To be published at the
beginning of January 1999. The second issue I will try to have the deadline
March 15, 1999 and publish in May 1999.
Richard Boulanger would like to include copies of the first two issues of
the magazine on the CD-ROM accompanying his upcoming Csound book so keep
that in mind if you are contributing an article.
Bye,
Hans Mikelson
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From: David Boothe
To: "Csound (E-mail)"
Subject: Manual
Date: Thu, 8 Oct 1998 11:21:22 -0500
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Fellow Csounders-
There have been a lot of questions and discussion about an updated manual on
this list recently, so I thought I would make the following offer.
Over the last several months, I have been putting together a version of the
manual, originally for my own use, suitable for printing. I finished it (as
much as anything in Csound ever is)just recently. It is current, to the best
of my belief, through Csound version 3.485. I fully expect this to be
replaced and superceded by the Csound book/CD-ROM when they come out, but
that could be another 3 or 4 months, so in the meantime, some may find this
useful.
It is in Adobe Acrobat format(.pdf) so it can be printed, or live on your
hard drive where it can be searched with the Acrobat Reader. Although is not
(yet) on an ftp site, I am willing send it to those who feel they need it.
Be aware these files are big. If you are interested, please read the
information below (from the read_1st.txt file), then contact me (off-list,
please) at dboothe@lyrick.com. I had originally thought to make updates
available, but, those plans are subject to review pending the release of the
book and CD-ROMS(s).
For those not interested - my apologies for the long post.
-David.
---------------------------------------
THE CSOUND MANUAL FORMATTED FOR PRINT
Purpose and Scope----------------------------------------------------
Often, it is handy to have a manual in book form. The goal of these files is
to provide such a manual for Csound, with emphasis on uniform, clear, and
easy to use layout and format. In addition, the arrangement is designed to
allow for easy updates and additions.
To this end the following features have been incorporated:
- Hierarchical headings used for organization.
Allows for an extensive, logical table of contents.
- Page numbering in -chapter:page- format.
Allows updates or additions to be made on a page by page basis.
Eliminates the need to reprint the entire manual with every update.
- Alphabetical "Opcode Finder" included as an "index"
- Two volumes: Manual (for programming reference)
Supplement (Tutorials and miscellaneous or
archival information)
-Separate files for single-sided or double-sided printing,
depending on user's preference.
File Format----------------------------------------------------------
The files are in Adobe Acrobat (.pdf) format. This format was chosen for its
cross-platform portability. You can download a free reader for your platform
from:
http://www.adobe.com/prodindex/acrobat/readstep.html
Please register your reader with Adobe.
Printing Procedure---------------------------------------------------
The following files should be downloaded and printed if you want single
sided printing:
- Manual.pdf Csound reference manual, complete.
.pdf file contains bookmarks for chapters.
- Spplmnt.pdf Complete supplement containing tutorials
and archived, outdated information.
If you prefer double-sided printing, download and print the following files:
- Manual1.pdf Csound reference manual, odd numbered pages.
- Manual2.pdf Csound reference manual, even numbered pages to be
printed on the back side of the Manual1.pdf pages.
- Spplmnt1.pdf Csound manual supplement, odd numbered pages.
- Spplmnt2.pdf Csound manual supplement, even numbered pages to be
printed on the back side of the Spplmnt1.pdf pages.
File sizes are:
- Manual.pdf 887 kb
- Spplmnt.pdf 185 kb
- Manual1.pdf 395 kb
- Manual2.pdf 368 kb
- Spplmnt1.pdf 81 kb
- Spplmnt2.pdf 67 kb
Update Procedure-----------------------------------------------------
I plan to update this manual with each major update of the Csound program.
Although the documentation contained in the manual is as generic as
possible, please be aware of any platform-specific variations in the version
of Csound you are using.
Updated pages only will be made available in .pdf file(s) separate from the
complete manual. By printing the appropriate update file(s), then inserting
or replacing the individual pages into your pre-existing manual, you will
have an up-to-date manual.
Please send any corrections or omissions me at dboothe@lyrick.com.
David M. Boothe
Lyrick Studios
Dallas, Texas USA
September, 1998
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Date: Thu, 8 Oct 98 17:25:42 BST
From: jpff@maths.bath.ac.uk
Subject: Max size in pvoc
To: csound@maths.ex.ac.uk
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Message written at 07 Oct 1998 14:30:50 -0400
I have been staring at teh code and it finally dawned on me that the
problem is that the entry structure has a short (16bit) field for the
length of the control structure. If PVFRAMSIZE is too big one of the
structures for pvadd is too large for 16bits. I have just rebuilt
with this field as a 32bit quantity -- but that is a real hurt as the
structure gets all out of alighnment etc. We will see about it.
Could make the structure dynamic instead. I will contemplate this.
=John ffitch
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From: jpff@maths.bath.ac.uk
Subject: Re: PVOC window size > 1024 ???
To: LilaSachel@wxs.nl, csound@maths.ex.ac.uk
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Message written at 07 Oct 1998 13:04:08 -0400
The maximum frame size is defined as
#define PVFRAMSIZE 4096 /* i.e. max FFT point size */
There is a serious problem in making this bigger as there are internal
tables which get way too big. Actually this is an area I had been
changing as part of the incorporation of Richard Karpen's code. It
might be replated to some 16bit pointers somewhere. I will look
again.
..oh and 4096 = 1024 * sizeof(float) so 1024 floats is the limit
=John ffitch
PS Hum; it is defined as 8196 elsewhere! I will adjust it, and look into freeing this.
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From: jpff@maths.bath.ac.uk
Subject: Re: PVOC window size > 1024 ???
To: gelida@intercom.es, csound@maths.ex.ac.uk
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Message written at 07 Oct 1998 13:12:57 -0400
Again reading the code there is a hard range of overlap from 2 to 16.
I await help fom those who understand these things (RichardK? Are you
there?) and add it to the list.
=John ffitch
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Date: Thu, 8 Oct 1998 09:46:37 -0700 (PDT)
From: Richard Karpen
To: jpff@maths.bath.ac.uk
cc: csound@maths.ex.ac.uk
Subject: Re: Max size in pvoc
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Hi John,
I will plan on going through all of the pvoc-related code during the next
month, to get all of them unified with regard to all of that default size
stuff, which is not only different in the various units, but also I
believe that some of the limits are now unecessary, given modern systems.
I'll try to get you a package of revised code by mid-november hopefully
along with the "one-pass" pvoc and convolve units.
Cheers,
Richard
On Thu, 8 Oct 1998 jpff@maths.bath.ac.uk wrote:
> Message written at 07 Oct 1998 14:30:50 -0400
>
> I have been staring at teh code and it finally dawned on me that the
> problem is that the entry structure has a short (16bit) field for the
> length of the control structure. If PVFRAMSIZE is too big one of the
> structures for pvadd is too large for 16bits. I have just rebuilt
> with this field as a 32bit quantity -- but that is a real hurt as the
> structure gets all out of alighnment etc. We will see about it.
> Could make the structure dynamic instead. I will contemplate this.
> =John ffitch
>
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Date: Thu, 8 Oct 1998 09:46:37 -0700 (PDT)
From: Richard Karpen
To: jpff@maths.bath.ac.uk
cc: csound@maths.ex.ac.uk
Subject: Re: Max size in pvoc
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Hi John,
I will plan on going through all of the pvoc-related code during the next
month, to get all of them unified with regard to all of that default size
stuff, which is not only different in the various units, but also I
believe that some of the limits are now unecessary, given modern systems.
I'll try to get you a package of revised code by mid-november hopefully
along with the "one-pass" pvoc and convolve units.
Cheers,
Richard
On Thu, 8 Oct 1998 jpff@maths.bath.ac.uk wrote:
> Message written at 07 Oct 1998 14:30:50 -0400
>
> I have been staring at teh code and it finally dawned on me that the
> problem is that the entry structure has a short (16bit) field for the
> length of the control structure. If PVFRAMSIZE is too big one of the
> structures for pvadd is too large for 16bits. I have just rebuilt
> with this field as a 32bit quantity -- but that is a real hurt as the
> structure gets all out of alighnment etc. We will see about it.
> Could make the structure dynamic instead. I will contemplate this.
> =John ffitch
>
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Date: Thu, 08 Oct 1998 19:27:38 +0200
From: Josep M Comajuncosas
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Subject: Pitch wheel in Csound orchestras
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This is an open question to everyone who has tried to MIDIfy Csound
instruments...
has anybody succeeded in implementing an instrument which is able to
respond to Pitch Wheel messages with *any* Csound version??
Till now I get an "Unrecognized message" statement, no matter what I do.
Without Pitch Wheel everything seems to run just fine.
Any help would be greatly appreciated. Thancks
Josep M Comajuncosas
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Date: Thu, 08 Oct 1998 17:50:14 +0200
From: Josep M Comajuncosas
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To: Hans Mikelson , csound@maths.ex.ac.uk
Subject: Re: Csound E-Zine
References: <01bdf219$d56656c0$53e167ce@default>
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Hi Hans,
I´m very excited with your idea. Of course I´ll try to help you if
possible.This should allow for a continuous update of Csound tutorials
and improvements of existing orchestras, as well as contributing to a
closer relationship with the other members of the community.Great!
Please keep me informed about that.
Josep M Comajuncosas
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Date: Thu, 08 Oct 1998 19:40:26 +0200
From: Lemoine Jean-Pierre
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Subject: Re: Announce: HPKComposer for Csound
References:
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I apologize! the VRML worlds were protected. Access is free now.
Bernhard Wagner wrote:
> Unfortunately your
> http://hplank.inetpc.com/vrmlcreations.html
> ask for user/password...
>
> Bernhard Wagner, MultiMedia Laboratory wagner@ifi.unizh.ch
> University of Zurich VOICE +41-1-635 45 69
> Inst.f.Informatik, Winterthurerstr. 190 FAX +41-1-635 68 09
> CH-8057 Zurich, Switzerland http://listen.to/bernard
>
> On Mon, 5 Oct 1998, Lemoine Jean-Pierre wrote:
>
> > You can find more information and download it to this site
> > http://hplank.inetpc.com/ . It has
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From: Fabio Bizzetti
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Subject: Re: Pedalfects 1.0.0 release
In-Reply-To: <361BE844.5A4F0E9F@nmol.com>
(from Mike Berry )
(at Wed, 07 Oct 1998 16:16:40 -0600)
Reply-To: Fabio Bizzetti
Date: Mon, 29 Jan 96 03:13:52
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Hi Mike Berry, you wrote:
> I am happy to announce the release of my new software Pedalfects. Pedalfects
> is an easy-to-use real-time effects processor for Macintosh (a Windows version
> is in the works). Pedalfects can use the audio input to your computer, an
> audio CD, or a sound file as input. You can hear your effects in real-time and
> also record to disk. Pedalfects can process up to eight simultaneous effects,
> including delays, filters, modulation effects, compression and gating, and distortion.
>
> Visit http://www.nmol.com/users/mikeb/pedal.htm for more information and to
> read the online manual.
>
> Pedalfects is shareware. Before registration, the recording and saving
> capabilites are disabled. The registration fee is $100 U.S.
I was working on such a program, for Dos. Will be finished in some months.
It's damn powerful and, so, it's not for Windows95. That's because of
overhead and latency times.
The DSP routines are all in hand optimized assembly, there are 3 versions
of each routine (Pentium, PMMX, PPro/PII), while the GUI is written in C.
It's aimed mostly at electric guitar and electric bass users, with a lot
of effects in realtime, and a lot of original and cool-sounding special
distortion effects.
>
> Please try it out and let me know what you think.
>
> --
> Mike Berry
> mikeb@nmol.com
> http://www.nmol.com/users/mikeb
>
>
>
>
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Date: Thu, 08 Oct 1998 22:29:48 +0200
From: Lemoine Jean-Pierre
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I have put on the server http://hplank.inetpc.com a version that is
working with Swing 1.1 beta 3. This Swing level has more bug fixes, and
is more frozen. I have reintroduced some user interface features that
were not working well with the previous Swing version, like the Color
chooser dialog. At the beginning the application is rather slow as a lot
of windows are being built, but performaces are better after. I need
more time for tuning this application, but I have also to use it and to
build some VRML stuff, so...
Dave, I am waiting your bug reports :)
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Subject: Re: Phaseshift at sound reflection?
To: Csound mailing list
Date: Thu, 8 Oct 1998 18:42:29 -0400 (EDT)
From: Eli Brandt
In-Reply-To: from "Anders Andersson" at Oct 4, 98 01:43:16 pm
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Anders Andersson wrote:
> Does anyone have any data's regarding on how the head act as a filter?
> (rolloff etc)
Does your version of Csound have the "hrtfer" opcode?
aLeft, aRight hrtfer asig, kAz, kElev, "HRTFcompact"
("HRTF" stands for "head-related transfer function".)
--
Eli Brandt | eli+@cs.cmu.edu | http://www.cs.cmu.edu/~eli/ |