| Hello all,
I was wondering if any of you might want to share some of your
compositions that you have done with Csound. I am teaching this software
and some of my students want hear some more products from the program.
If you are interested in sending me some of your orc and sco files that
would be great. I may create a Csound section on the Music Techonology
Home page for teaching purposes, so if you all are interested in have a
Web spot for them please send me what you have.
Also if you wanted to send me a recording of the piece that would be
great, too.
My address is
Joseph Reinsel
P.O. box 6968
Radford Univeristy Station
Radford, VA 24142
U.S.A.
(540)831-2445
Thanks alot.
Hope to hear from you all soon.
-Joseph Reinsel
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Date: Mon, 30 Mar 1998 14:50:35 +0100
From: Richard Dobson
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To: "Jim Stevenson Ph.D"
Cc: csound@maths.ex.ac.uk, jims@eos.arc.nasa.gov
Subject: Re: How do you play four channels?
References: <199803291657.IAA25143@eos.arc.nasa.gov>
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If you mean cards which support a four-channel data stream, that's the
whole point - there don't seem to be any. I am expecting the Analog card
to do just that very soon; but of course that is not a commercial
soundcard as such, until a manufacturer takes it up.
On the other hand, there is now a wide range of 'multi-device' cards,
where 1 device = stereo - the Event range, Emagic Audiowerk, Terratec
EWS, etc. You will need to refer to their web sites for specs. In many
cases, the only thing preventing these cards handling 4-channel data is
the lack of support in the driver, because it has never ocurred to the
developer to provide it.
Cards will operate in any computer system into which they can be fitted
- IF drivers are available. DOS, yes, in some cases, to support games;
linux - almost certainly not, unless some independent party develops one
(unless anyone knows otherwise?). FM chips - depends; the Terratec has
one, the Event ones, as far as I can tell, don't. Any cards which claim
to be 'SoundBlaster compatible' or 'games compatible' should have one.
Jim Stevenson Ph.D wrote:
> I would appreciate a list of 4 chanel cards with some specs.
>
> Will they operate under dos or linux?
>
> Do any have fm synth chips?
>
> Thanks.
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Date: Mon, 30 Mar 1998 10:53:06 -0600
From: Cliff Caruthers
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Digest mode for me too please, when you get a chance.
thanks,
cliff
cliffc@sky.net
Pedro Batista wrote:
> Sorry to waste list b/w with this personal matter...
>
> I remember reading a reply from mr John Fitch, some time ago, stating
> there
> WAS a digest mode but people had to be added manually to this list, by
> mr
> John himself.
>
> Well, mr John Fitch, if youre listening and its not too much of a
> hassle,
> could you please add me to it?
> Thanks
>
> pedro batista
>
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To: csound@maths.ex.ac.uk
From: =cw4t7abs
Subject: Re: csound 3.47 for PPC?
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>Hi,
>Perl is one cool language.
0000://000.000.000/000/00000___
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"Jim Stevenson Ph.D"
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From: tolve
Subject: Re: four channels?
Date: Mon, 30 Mar 1998 12:08:59 -0500
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addendum to my previous post on MOTU 2408. just caught this post on
motu-mac list. a cheap way to add +4 level inputs to 2408 -at least for
mac. don't know about windows.
tolve
>The DBX DPP can provide +4, 24-bit input into the MOTU Audio 2408 system
>for $599 retail (plus digital I/O card) via S/PDIF. The unit also
>provides tape saturation emulation, extensive metering and dynamics
>processing.
>
>http://www.motu.com/english/software/dp/exam_k.html
>
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From: Ross Clement
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In-Reply-To: <351FCDF0.AE4DD264@sky.net> from "Cliff Caruthers" at Mar 30, 98 10:53:06 am
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Ditto for me too please.
> Digest mode for me too please, when you get a chance.
>
> thanks,
> cliff
>
> cliffc@sky.net
>
> Pedro Batista wrote:
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From: tolve
Subject: Re: How do you play four channels?
Date: Mon, 30 Mar 1998 15:09:41 -0500
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damn, this is my third and last attempt to get this message through.
abbreviated 2408 product blurb without indicating but you get the idea.
-tolve
-----------
Jim Stevenson Ph.D wrote:
> I would appreciate a list of 4 chanel cards with some specs.
> Will they operate under dos or linux?
>Do any have fm synth chips?
sorry, no synth chips, dos or linux below but...
if you need card *today*. for macintosh:
korg 12/12 io
http://www.korg.com/sndlnk1.htm
"The 1212 I/O features 1 audio inputs and 12 audio outputs: stereo analog,
stereo S/PDIF, and eight channel ADAT optical. All inputs and outputs can
be used at the same time, for simultaneous recording and playback."
Now you need software to run with these cards. Above comes bundled with
Macromedia Deck II multitrack hard disk recording software. If midi is
important to you, all reports i've seen indicate card works well with motu
digital performer as well.
www.motu.com
midi sequencing capabilities in addition to a great multitrack hard disk
recording interface. edit, crossfade loops and a laundry list of features
including good quality effects that most seem to prefer over VST plugins.
depending on your usage of csound, either of the above programs could take
years off your production of scores. no hard rules here, but certainly this
would be the case if your music is mostly note based.
***but wait, because *very* soon (in fact call to see if it is already
available) there will be for Mac OS and Windows:***
(before you read on and are disappointed -inputs not pro level, what do you
expect for under $1,000? for an extra $1,500 more or less depending on
features you want, you can purchase third party products that will take
care of that nicely. and for this probably best to go with MOTU DP -total
cost thousands of dollars less than comparable digidesign system) and now
for the specs...
from Mark of the Unicorn
"The 2408 is a new computer-based, digital audio
hard disk recording system for Mac OS and Windows.
Inputs and outputs | Expansion | ADAT/DA-88
transfers | High fidelity analog recording | 24-bit
internal data bus | 24-bit recording | S/PDIF input
and output | Total Synchronization | Software |
Your 2408 system grows as your computer grows
Inputs and outputs
The 2408 gives you 24 simultaneous
inputs/outputs for under $1,000. The 1U rack-mountable 2408
provides 7 banks of 8 channel I/O: 1 bank of
analog, 3 banks of ADAT optical, 3 banks of Tascam
TDIF, plus stereo S/PDIF. You can choose any three
banks (24 channels) to be active at one time. This
means you can hook up three ADATs, three DA-88s,
and eight analog devices all at the same time and
access any three banks - in any combination of
formats - at any time. And you can freely switch
formats at any time.
How does the 2408 do it? While other companies rely
on stock DSP chips for their I/O processing, we've
developed a custom VLSI chip, supercharged for
massive I/O. And because our chip is dedicated
entirely to I/O, it outperforms the DSPs in other
and effects processing.
You can connect up to three 2408 I/O units to your
computer for a total of 72 input and output
connections.
ADAT/DA-88 transfers
Along with its computer I/O capabilities, the 2408
also does format conversion between ADAT and DA-88
(or compatibles). In fact, if you connect 3 ADATs
and 3 DA-88s to a single 2408 I/O rack unit, you
can transfer tracks between them up to 24 channels
at a time, with completely flexible patching
between them. Need to bounce ADAT track 5 to DA-88
track 21? No problem.
Software
The 2408 core system includes a
complete waveform editing program for Power
Macintosh, with all of the high-end features you'd
expect in a full-featured audio workstation"
blah blah blah
tolve
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From: david first
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Subject: Long Tone Problem
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Hi to All -
I've been trying to build a simple set of sustained tones that move through
various timed glissandi stages (see enclosed files). I keep getting a fatal
error message stating "low on ARGSPACE". Apparently my linsegs are too long.
Am I up against a wall? If so, can anyone see a more elegant way to achieve
this? Am I missing something obvious?
Thanks
David F.
;ORC
sr = 44100
kr = 4410
ksmps = 10
nchnls = 2
instr 1
kamp1 linseg p4, p3, p4
kamp2 linseg p4*0, p3, p4*0
kcps linseg p5, p3*7/64, p5, p3*1/64, p5*9/10, p3*7/64, p5*9/10, p3*1/64,
p5, p3*7/64, p5, p3*1/64, p5*9/10, p3*7/64, p5*9/10, p3*1/64, p5, p3*7/64, p5,
p3*1/64, p5*9/10, p3*7/64, p5*9/10, p3*1/64, p5, p3*7/64, p5, p3*1/64,
p5*9/10, p3*7/64, p5*9/10, p3*1/64, p5
aout1 oscil kamp1, kcps, 1
aout2 oscil kamp2, kcps, 1
outs aout1, aout2
endin
instr 2
kamp1 linseg p4, p3, p4
kamp2 linseg p4*0, p3, p4*0
kcps linseg p5*6/5, p3*3/64, p5*6/5, p3*1/64, p5*4/3, p3*3/64, p5*4/3,
p3*1/64, p5*6/5, p3*3/64, p5*6/5, p3*1/64, p5*9/8, p3*3/64, p5*9/8, p3*1/64,
p5*6/5, p3*3/64, p5*6/5, p3*1/64, p5*4/3, p3*3/64, p5*4/3, p3*1/64, p5*6/5,
p3*3/64, p5*6/5, p3*1/64, p5*9/8, p3*3/64, p5*9/8, p3*1/64, p5*6/5, p3*3/64,
p5*6/5, p3*3/64, p5*6/5, p3*1/64, p5*4/3, p3*3/64, p5*4/3, p3*1/64, p5*6/5,
p3*3/64, p5*6/5, p3*1/64, p5*9/8, p3*3/64, p5*9/8, p3*1/64, p5*6/5, p3*3/64,
p5*6/5, p3*1/64, p5*4/3, p3*3/64, p5*4/3, p3*1/64, p5*6/5, p3*3/64, p5*6/5,
p3*1/64, p5*9/8, p3*3/64, p5*9/8, p3*1/64, p5*6/5, p3*3/64, p5*6/5
aout1 oscil kamp2, kcps, 1
aout2 oscil kamp1, kcps, 1
outs aout1, aout2
endin
instr 3
kamp1 linseg p4, p3, p4
kamp2 linseg p4*0, p3, p4*0
kcps linseg p5*3/2, p3*3/64, p5*3/2, p3*1/64, p5*5/3, p3*3/64, p5*5/3,
p3*1/64, p5*3/2, p3*3/64, p5*3/2, p3*1/64, p5*3/2, p3*3/64, p5*3/2, p3*1/64,
p5*3/2, p3*3/64, p5*3/2, p3*1/64, p5*5/3, p3*3/64, p5*5/3, p3*1/64, p5*3/2,
p3*3/64, p5*3/2, p3*1/64, p5*3/2, p3*3/64, p5*3/2, p3*1/64, p5*3/2, p3*3/64, p5*3/2
aout1 oscil kamp1, kcps, 1
aout2 oscil kamp2, kcps, 1
outs aout1, aout2
endin
---------------------------------------------------------------------------------------
;SCO
f1 0 8192 10 1 .5 .3333 .25 .2 .1667
t 0 25
;inst start dur ampl freq
i1 0 16 3000 174.6141
i2 0 16 3000 174.6141
i3 0 16 3000 174.6141
e
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From: tolve
Subject: Re: Long Tone Problem
Date: Mon, 30 Mar 1998 18:44:37 -0500
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Precedence: bulk
try removing carriage returns from linseg.
tolve
david f. wrote:
>Hi to All -
>
>I've been trying to build a simple set of sustained tones that move through
>various timed glissandi stages (see enclosed files). I keep getting a fatal
>error message stating "low on ARGSPACE". Apparently my linsegs are too long.
>Am I up against a wall? If so, can anyone see a more elegant way to achieve
>this? Am I missing something obvious?
>
>Thanks
>
>David F.
>
>
>;ORC
>sr = 44100
>kr = 4410
>ksmps = 10
>nchnls = 2
>
> instr 1
>kamp1 linseg p4, p3, p4
>kamp2 linseg p4*0, p3, p4*0
>kcps linseg p5, p3*7/64, p5, p3*1/64, p5*9/10, p3*7/64, p5*9/10, p3*1/64,
>p5, p3*7/64, p5, p3*1/64, p5*9/10, p3*7/64, p5*9/10, p3*1/64, p5, p3*7/64, p5,
>p3*1/64, p5*9/10, p3*7/64, p5*9/10, p3*1/64, p5, p3*7/64, p5, p3*1/64,
>p5*9/10, p3*7/64, p5*9/10, p3*1/64, p5
>aout1 oscil kamp1, kcps, 1
>aout2 oscil kamp2, kcps, 1
> outs aout1, aout2
> endin
>
>
> instr 2
>kamp1 linseg p4, p3, p4
>kamp2 linseg p4*0, p3, p4*0
>kcps linseg p5*6/5, p3*3/64, p5*6/5, p3*1/64, p5*4/3, p3*3/64, p5*4/3,
>p3*1/64, p5*6/5, p3*3/64, p5*6/5, p3*1/64, p5*9/8, p3*3/64, p5*9/8, p3*1/64,
>p5*6/5, p3*3/64, p5*6/5, p3*1/64, p5*4/3, p3*3/64, p5*4/3, p3*1/64, p5*6/5,
>p3*3/64, p5*6/5, p3*1/64, p5*9/8, p3*3/64, p5*9/8, p3*1/64, p5*6/5, p3*3/64,
>p5*6/5, p3*3/64, p5*6/5, p3*1/64, p5*4/3, p3*3/64, p5*4/3, p3*1/64, p5*6/5,
>p3*3/64, p5*6/5, p3*1/64, p5*9/8, p3*3/64, p5*9/8, p3*1/64, p5*6/5, p3*3/64,
>p5*6/5, p3*1/64, p5*4/3, p3*3/64, p5*4/3, p3*1/64, p5*6/5, p3*3/64, p5*6/5,
>p3*1/64, p5*9/8, p3*3/64, p5*9/8, p3*1/64, p5*6/5, p3*3/64, p5*6/5
>aout1 oscil kamp2, kcps, 1
>aout2 oscil kamp1, kcps, 1
> outs aout1, aout2
> endin
>
> instr 3
>kamp1 linseg p4, p3, p4
>kamp2 linseg p4*0, p3, p4*0
>kcps linseg p5*3/2, p3*3/64, p5*3/2, p3*1/64, p5*5/3, p3*3/64, p5*5/3,
>p3*1/64, p5*3/2, p3*3/64, p5*3/2, p3*1/64, p5*3/2, p3*3/64, p5*3/2, p3*1/64,
>p5*3/2, p3*3/64, p5*3/2, p3*1/64, p5*5/3, p3*3/64, p5*5/3, p3*1/64, p5*3/2,
>p3*3/64, p5*3/2, p3*1/64, p5*3/2, p3*3/64, p5*3/2, p3*1/64, p5*3/2,
>p3*3/64, p5*3/2
>aout1 oscil kamp1, kcps, 1
>aout2 oscil kamp2, kcps, 1
> outs aout1, aout2
> endin
>
>
>-------------------------------------------------------------------------------
>--------
>;SCO
>f1 0 8192 10 1 .5 .3333 .25 .2 .1667
>t 0 25
> ;inst start dur ampl freq
> i1 0 16 3000 174.6141
> i2 0 16 3000 174.6141
> i3 0 16 3000 174.6141
>
>
>e
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Date: Sat, 28 Feb 1998 10:56:40 +0000
From: Robert Ahad
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Subject: ditto Digest Mode
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Me too!
Robert Ahad
> Ditto for me too please.
>
> > Digest mode for me too please, when you get a chance.
> >
> > thanks,
> > cliff
> >
> > cliffc@sky.net
> >
> > Pedro Batista wrote:
>
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From: Roger Klaveness
To: csound
Subject: Re: How do you play four channels?
Date: Tue, 31 Mar 1998 08:20:55 +0200
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-----Original Message-----
From: Richard Dobson
To: Jim Stevenson Ph.D
Cc: csound@maths.ex.ac.uk ; jims@eos.arc.nasa.gov
Date: 30. mars 1998 16:00
Subject: Re: How do you play four channels?
>If you mean cards which support a four-channel data stream, that's the
>whole point - there don't seem to be any. I am expecting the Analog card
>to do just that very soon; but of course that is not a commercial
>soundcard as such, until a manufacturer takes it up.
>
>On the other hand, there is now a wide range of 'multi-device' cards,
>where 1 device = stereo - the Event range, Emagic Audiowerk, Terratec
>EWS, etc. You will need to refer to their web sites for specs. In many
>cases, the only thing preventing these cards handling 4-channel data is
>the lack of support in the driver, because it has never ocurred to the
>developer to provide it.
>
The question is , can a standard windows sound-driver be 4-channel?
If not you either must have a 4-channel board with two pair of drivers with
2 channels each (can csound handle 2 soundcards?), or change csound to
directly use the card.
I have a Digidesign AudimediaIII card ( 2 analog + 2 digital out ), Cubase
Audio uses it with
special drivers, not standard windows.
I tried to record to a 4 channel wav-file from csound, and then split it
into 2 stereo or 4 mono for use with Cubase Audio or the Session program
that came with the board but I didn't have any program that
could understand 4-channel wav-files. But in theory it should be possible.
>Cards will operate in any computer system into which they can be fitted
>- IF drivers are available. DOS, yes, in some cases, to support games;
>linux - almost certainly not, unless some independent party develops one
>(unless anyone knows otherwise?). FM chips - depends; the Terratec has
>one, the Event ones, as far as I can tell, don't. Any cards which claim
>to be 'SoundBlaster compatible' or 'games compatible' should have one.
>
>Jim Stevenson Ph.D wrote:
>
>> I would appreciate a list of 4 chanel cards with some specs.
>>
>> Will they operate under dos or linux?
>>
>> Do any have fm synth chips?
>>
>> Thanks.
>
>
>
>
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Date: Tue, 31 Mar 1998 10:48:56 -0100
From: Jamie Bullock
Subject: RE: Long Tone Problem
To: 'Csound List'
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----------
From: tolve[SMTP:tlv@tuna.net]
Sent: 31 March 1998 00:44
To: d1st@earthlink.net; csound@maths.ex.ac.uk
Subject: Re: Long Tone Problem
try removing carriage returns from linseg.
tolve
david f. wrote:
>Hi to All -
>
>I've been trying to build a simple set of sustained tones that move through
>various timed glissandi stages (see enclosed files). I keep getting a fatal
>error message stating "low on ARGSPACE". Apparently my linsegs are too long.
>Am I up against a wall? If so, can anyone see a more elegant way to achieve
>this? Am I missing something obvious?
>
>Thanks
>
>David F.
>
>
>;ORC
>sr = 44100
>kr = 4410
>ksmps = 10
>nchnls = 2
>
> instr 1
>kamp1 linseg p4, p3, p4
>kamp2 linseg p4*0, p3, p4*0
>kcps linseg p5, p3*7/64, p5, p3*1/64, p5*9/10, p3*7/64, p5*9/10, p3*1/64,
>p5, p3*7/64, p5, p3*1/64, p5*9/10, p3*7/64, p5*9/10, p3*1/64, p5, p3*7/64, p5,
>p3*1/64, p5*9/10, p3*7/64, p5*9/10, p3*1/64, p5, p3*7/64, p5, p3*1/64,
>p5*9/10, p3*7/64, p5*9/10, p3*1/64, p5
>aout1 oscil kamp1, kcps, 1
>aout2 oscil kamp2, kcps, 1
> outs aout1, aout2
> endin
>
>
> instr 2
>kamp1 linseg p4, p3, p4
>kamp2 linseg p4*0, p3, p4*0
>kcps linseg p5*6/5, p3*3/64, p5*6/5, p3*1/64, p5*4/3, p3*3/64, p5*4/3,
>p3*1/64, p5*6/5, p3*3/64, p5*6/5, p3*1/64, p5*9/8, p3*3/64, p5*9/8, p3*1/64,
>p5*6/5, p3*3/64, p5*6/5, p3*1/64, p5*4/3, p3*3/64, p5*4/3, p3*1/64, p5*6/5,
>p3*3/64, p5*6/5, p3*1/64, p5*9/8, p3*3/64, p5*9/8, p3*1/64, p5*6/5, p3*3/64,
>p5*6/5, p3*3/64, p5*6/5, p3*1/64, p5*4/3, p3*3/64, p5*4/3, p3*1/64, p5*6/5,
>p3*3/64, p5*6/5, p3*1/64, p5*9/8, p3*3/64, p5*9/8, p3*1/64, p5*6/5, p3*3/64,
>p5*6/5, p3*1/64, p5*4/3, p3*3/64, p5*4/3, p3*1/64, p5*6/5, p3*3/64, p5*6/5,
>p3*1/64, p5*9/8, p3*3/64, p5*9/8, p3*1/64, p5*6/5, p3*3/64, p5*6/5
>aout1 oscil kamp2, kcps, 1
>aout2 oscil kamp1, kcps, 1
> outs aout1, aout2
> endin
>
> instr 3
>kamp1 linseg p4, p3, p4
>kamp2 linseg p4*0, p3, p4*0
>kcps linseg p5*3/2, p3*3/64, p5*3/2, p3*1/64, p5*5/3, p3*3/64, p5*5/3,
>p3*1/64, p5*3/2, p3*3/64, p5*3/2, p3*1/64, p5*3/2, p3*3/64, p5*3/2, p3*1/64,
>p5*3/2, p3*3/64, p5*3/2, p3*1/64, p5*5/3, p3*3/64, p5*5/3, p3*1/64, p5*3/2,
>p3*3/64, p5*3/2, p3*1/64, p5*3/2, p3*3/64, p5*3/2, p3*1/64, p5*3/2,
>p3*3/64, p5*3/2
>aout1 oscil kamp1, kcps, 1
>aout2 oscil kamp2, kcps, 1
> outs aout1, aout2
> endin
>
>
>-------------------------------------------------------------------------------
>--------
>;SCO
>f1 0 8192 10 1 .5 .3333 .25 .2 .1667
>t 0 25
> ;inst start dur ampl freq
> i1 0 16 3000 174.6141
> i2 0 16 3000 174.6141
> i3 0 16 3000 174.6141
>
>
>e
Alternatively create your linseg envelope by using GEN07 (ie. something like f2 0 128 7 ) in your score ; if you have WCShell, you can draw it! Then index the table from the orchestra using something like :
kndx line 0,idur,
kcps tablei kndx,
kcps=kcps*p5
This seems more efficient to me!
JamieB
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Date: Tue, 31 Mar 1998 11:02:57 +0200
From: khalid
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Subject: harmonic oscillator blues
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This is supposed to be a mass attached to a spring:
_________________
|
S
|
M
This little system can be described by this equation:
F + kx = 0 (Hookes law)
Below is an orchestra+score that realizes the equation.
If you pull the mass(im) it starts to swing.
As expected, the orc produces a sine wave. Now the problem:
the wave fades!! Even though there's now damper!!
Now this shouldn't happen!!
In the orc, there's a derivation. I put
a(n)=(v(n)-v(n-1))/(t(n)-t(n-1)=(v(n)-v(n-1))
because (t(n)-(t(n-1)) is 1 (sample), and similar with v(n).
What's going on here?
kd
;----------start orc---------------------
sr=44100
kr=44100
ksmps=1
nchnls=1
; F = -kx => M*a = -kx => v(n)-v(n-1)=-k/M*x(n) =>
; x(n) = -M/k*(x(n)-x(n-1)-x(n-1)+x(n-2)) = -M/k*(x(n)-2*x(n-1)+x(n-2))
; => (1+M/k)*x(n)=-M/k*(-2*x(n-1)+x(n-2)) =>
; x(n)=-M/(k+M)*(-2*x(n-1)+x(n-2))
instr 1
im init 10
ik init .01
ix init 1000 ; force at x(0)
ic init -im/(im+ik)
ax0 init 0 ; a(x(n))
ax1 init 0 ; a(x(n-1))
ax2 init ix/ic ; a(x(n-2)), make F(x(0))=ix
ax0 = ic*(-2*ax1+ax2)
out ax0
ax2 = ax1
ax1 = ax0
endin
;---------------start score-------------------
i1 0 2
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Date: Tue, 31 Mar 1998 11:21:31 +0100
From: Richard Dobson
Reply-To: RWD@cableinet.co.uk
Organization: Composers Desktop Project
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To: Roger Klaveness
Cc: csound
Subject: Re: How do you play four channels?
References: <003a01bd5c6d$2aeb5b60$ac91d8c1@roger>
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Roger Klaveness wrote:
> The question is , can a standard windows sound-driver be 4-channel?
yes, absolutely! or 6 channel, or eight...
> If not you either must have a 4-channel board with two pair of drivers with
> 2 channels each (can csound handle 2 soundcards?), or change csound to
> directly use the card.
> I have a Digidesign AudimediaIII card ( 2 analog + 2 digital out ), Cubase
> Audio uses it with
> special drivers, not standard windows.
> I tried to record to a 4 channel wav-file from csound, and then split it
> into 2 stereo or 4 mono for use with Cubase Audio or the Session program
> that came with the board but I didn't have any program that
> could understand 4-channel wav-files. But in theory it should be possible.
I have a simple Win32 console program which will do this (4-ch to two stereo),
if it is of any use. Maybe there is already something in the Csound utils which
can do it?
Commercial:
I am looking to provide a useful if preliminary level of 4-channel support into
CDP, for the next release - 4-ch playback (mixed to stereo if needbe), and
4-channel waveform viewer/editor. Possibly also a 4-channel reverberator, once
the Analog card can play it. The time hase come to assert that four channels
can no longer be regarded as 'non-standard' !
Richard Dobson
Composers Desktop Project
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From: Richard Dobson
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Organization: Composers Desktop Project
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To: tolve , csound@maths.ex.ac.uk
Subject: Re: Long Tone Problem
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An alternative method is to use a legato instrument (the tie mechanism - negative
p3 - I have written a chapter about this for the Csound book), so that each
instrument simply ramps to the next one - ie use the npX construct in the score, and
use the optional 'istor' arg to prevent the reinit of your oscillator. That way, you
can avoid hard-coding long ramps into linseg. At the end, just replace npX with an
explicit value. The only caveat is that start and end times must match exactly, so
it is best to use the + mechanism for start times, in the score.
Richard Dobson
tolve wrote:
> try removing carriage returns from linseg.
>
> tolve
>
> david f. wrote:
> >Hi to All -
> >
> >I've been trying to build a simple set of sustained tones that move through
> >various timed glissandi stages (see enclosed files). I keep getting a fatal
> >error message stating "low on ARGSPACE". Apparently my linsegs are too long.
> >Am I up against a wall? If so, can anyone see a more elegant way to achieve
> >this? Am I missing something obvious?
> >
> >Thanks
> >
> >David F.
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To: khalid
From: Hans Timmermans
Subject: Re: harmonic oscillator blues
Cc: csound@maths.ex.ac.uk
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>This is supposed to be a mass attached to a spring:
> _________________
> |
> S
> |
> M
>
>This little system can be described by this equation:
>
> F + kx = 0 (Hookes law)
>
>Below is an orchestra+score that realizes the equation.
>If you pull the mass(im) it starts to swing.
>As expected, the orc produces a sine wave. Now the problem:
>the wave fades!! Even though there's now damper!!
>Now this shouldn't happen!!
>
>In the orc, there's a derivation. I put
>
>a(n)=(v(n)-v(n-1))/(t(n)-t(n-1)=(v(n)-v(n-1))
the expression: v(v)-v(n-1) introduces a low-pass filter which causes the
fading-out.
(supposed the frequency of your oscillating system is well below f-Nyquist.
>
>because (t(n)-(t(n-1)) is 1 (sample), and similar with v(n).
>What's going on here?
>
This is always the problem in simulating physical systems.
You should correct for the low-pass thing.
Good luck,
Hans Timmermans e-mail: hans.timmermans@kmt.hku.nl
Utrecht School of the Arts phone: (+31) 35 6836464
dep: Music Technology fax: (+31) 35 6836480
senior lecturer computer music
PO-BOX 2471
1200 CL HILVERSUM
the NETHERLANDS
|