5 Oct
2005
5 Oct
'05
1 a.m.
What is an easy way to generate sets of precise sine waves?
I like to generate (currently, slowly) separate sets of sine waves each
consisting of a fundamental and 2 - 3 pseudo harmonics (really only
justly-tuned perfect fifths, octaves, and a third--major or minor, depending
upon the type of drone I want). The goal is to produce examples of
justly-tuned chords that are easy to practice and teach with. And, sine waves
are the easiest waveform for brass instruments to play along with. (This is
very useful for orchestral brass instruction, and brass chamber ensemble
exercises.)
My current toolchain is clunky: XMMS --> ToneGen[erator] plug-in --> Hard Disk
playback --> Audacity (to add an envelope to the front of each set).
I would like to find a way to make this process more streamlined. I would love
to be able to write scripts to do the dirty work.
What program is suggested for replacing this toolchain? I think Csound can
accomplish this. (Can this be accomplished with Audacity+Nyquist, too? Is
there a plug-in that will play multiple frequencies at once?) Are there any
favourite command line applications that can be used to produce multiple sine
waves at once? Csound seems overly complex for this application, but I do not
know of alternatives. Is there anything other than Csound? I just want to
make sure I'm not overlooking a great specialized program before digging into
Csound.
Thanks a lot,
Douglas Ward
5 Oct
5 Oct
1:51 a.m.
sounds like the perfect job for supercollider::
http://supercollider.sourceforge.net/
::which is an interpreted object orientated scripting language for
synthesis and other signal processing. the language is based on
smalltalk, with C-like syntax but isn't nearly as pedantic as csound.
Douglas Ward wrote:
What is an easy way to generate sets of precise sine
waves?
I like to generate (currently, slowly) separate sets of sine waves each
consisting of a fundamental and 2 - 3 pseudo harmonics (really only
justly-tuned perfect fifths, octaves, and a third--major or minor, depending
upon the type of drone I want). The goal is to produce examples of
justly-tuned chords that are easy to practice and teach with. And, sine waves
are the easiest waveform for brass instruments to play along with. (This is
very useful for orchestral brass instruction, and brass chamber ensemble
exercises.)
My current toolchain is clunky: XMMS --> ToneGen[erator] plug-in --> Hard Disk
playback --> Audacity (to add an envelope to the front of each set).
I would like to find a way to make this process more streamlined. I would love
to be able to write scripts to do the dirty work.
What program is suggested for replacing this toolchain? I think Csound can
accomplish this. (Can this be accomplished with Audacity+Nyquist, too? Is
there a plug-in that will play multiple frequencies at once?) Are there any
favourite command line applications that can be used to produce multiple sine
waves at once? Csound seems overly complex for this application, but I do not
know of alternatives. Is there anything other than Csound? I just want to
make sure I'm not overlooking a great specialized program before digging into
Csound.
Thanks a lot,
Douglas Ward
6:28 a.m.
Hallo,
dmotd hat gesagt: // dmotd wrote:
sounds like the perfect job for supercollider::
http://supercollider.sourceforge.net/
Or Pd: www.puredata.org
Ciao
--
Frank Barknecht _ ______footils.org_ __goto10.org__
28 Oct
28 Oct
11:33 a.m.
Frank Barknecht wrote:
Hallo,
dmotd hat gesagt: // dmotd wrote:
Or ChucK:
http://chuck.cs.princeton.edu/
Erik
--
+-----------------------------------------------------------+
Erik de Castro Lopo
+-----------------------------------------------------------+
Journalist: Microsoft CEO Steve Ballmer has finally said Linux
is the No. 1 threat to Windows. What's your response to that?
Linus : "Tag, you're it." I don't care. They've had a lot of
enemies in their time. Let them fight one enemy that
doesn't care for a change.
sounds like the perfect job for supercollider::
http://supercollider.sourceforge.net/
Or Pd: www.puredata.org 
11:34 a.m.
Frank Barknecht wrote:
Hallo,
dmotd hat gesagt: // dmotd wrote:
Or ChucK:
http://chuck.cs.princeton.edu/
Erik
--
+-----------------------------------------------------------+
Erik de Castro Lopo
+-----------------------------------------------------------+
Journalist: Microsoft CEO Steve Ballmer has finally said Linux
is the No. 1 threat to Windows. What's your response to that?
Linus : "Tag, you're it." I don't care. They've had a lot of
enemies in their time. Let them fight one enemy that
doesn't care for a change.
sounds like the perfect job for supercollider::
http://supercollider.sourceforge.net/
Or Pd: www.puredata.org
5 Oct
5 Oct
6:36 a.m.
Hallo,
dmotd hat gesagt: // dmotd wrote:
> What program is suggested for replacing this
toolchain? I think Csound can
> accomplish this. (Can this be accomplished with Audacity+Nyquist, too? Is
> there a plug-in that will play multiple frequencies at once?) Are there any
> favourite command line applications that can be used to produce multiple sine
> waves at once? Csound seems overly complex for this application, but I do not
> know of alternatives. Is there anything other than Csound? I just want to
> make sure I'm not overlooking a great specialized program before digging into
> Csound.
I already mentioned Pd in another mail, but "overlooking a great
specialized program" IMO is not an issue, if you can instead learn,
how to write that great specialized program yourself in Pd, Csound or
SC.
Some years ago I was always looking for that superdooper Shareware
software which gives me that much-needed functionality. Nowadays I
just fire up Pd, if I need a certain tool, and patch it.
To program most of your sine wave generator in would take less than 3
minutes, including GUI and volume and midi control, in Pd. Playing
sine waves is what is tought in the very first hour of Pd workshops,
it's generally just a starting point for software synthesizers.
Ciao
--
Frank Barknecht _ ______footils.org_ __goto10.org__
5:48 p.m.
New subject: [linux-audio-user] Re: Software for Sine Wave Generation
Hi Douglas
I'd use ZynAddSubFX for the job, because it's graphical, can do all you
want here out of the box in one step, and can write the output to disk
by itself. Here's a quick HowTo, if you get stuck on the way feel free
to ask away.
1. Download (obviously). If you have Debian or Red Hat you can get the
packages from AGNULA (highly recommended).
2. Start it up.
3. You'll see a grayish window with a ton of options and knobs. Make
sure user interface mode is set to 'advanced' mode; if you see a
keyboard on screen you are in beginner's mode, select 'Misc' -> 'Change
user interface mode'.
4. Un-Select the 'Portamento' checkbox on the bottom left.
5. Open the internal 'Virtual Keyboard' by clicking the greenish 'vK'
button on the top right.
6. Play around with it; you should be hearing Sine waves. You should be
able to produce your Pseudo-Harmonics right on the computer keyboard. I
was able to produce the Pseudo-Harmonics you mentioned by pressing C, M,
E and T simultaneously (replace T with 6 for major 3rd).
To create envelopes:
1. Click the big, friendly 'Edit Instrument' button
2. Click the big, friendly 'Edit' button under the 'AddSynth' label
(check enable in case it isn't)
3. You are now at the heart of ZynAddSubFX's analogue synthesizer (well,
actually you're at a GUI controlling parameters which affect said
heart). On the top left you will find a section of four knobs saying
'Amplitude Envelope'. Turn 'S. Val' to zero and control the length of
the envelope with 'D. Dt' (meaning Detain). check now and again in the
Virtual keyboard'. Un-check the 'frcR' checkbox to disable cutoff on
releasing keys (useful if your PC keyboard doesn't support more than one
key)
To create real harmonics:
1. Go to the AddSynth parameter dialogue again
2. Click the 'Show Voice Parameters' button on the bottom left
3. Click the 'Change' button on the bottom left
4. The sliders control the all the harmonics' volumes. Play with them a
little and enjoy the sound.
To record:
1. In the main window, select 'Record' -> 'Choose WAV file'
2. Enter something you will find again
3. Hit the red 'Rec' button below the menu and play away
Hope this helps!
Carlo
6 Oct
6 Oct
3:16 a.m.
On Tue, Oct 04, 2005 at 11:00:09PM -0400, Douglas Ward wrote:
I like to generate (currently, slowly) separate sets
of sine waves each
consisting of a fundamental and 2 - 3 pseudo harmonics (really only
justly-tuned perfect fifths, octaves, and a third--major or minor, depending
upon the type of drone I want).
What kind of audio hardware do you own? In particular, will you be
using a card like the creative emu10k1?
If so, you want tonegen: http://www.lns.com/papers/tonegen/
You run the command, it produces a sine wave sound. Supposing you
have multiple-open capable hardware, you can just run multiple copies
of tonegen to add harmonics!
--
Ross Vandegrift
ross(a)lug.udel.edu
"The good Christian should beware of mathematicians, and all those who
make empty prophecies. The danger already exists that the mathematicians
have made a covenant with the devil to darken the spirit and to confine
man in the bonds of Hell."
--St. Augustine, De Genesi ad Litteram, Book II, xviii, 37
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7 comments
7 participants
participants (7)
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Carlo Capocasa -
dmotd -
Douglas Ward -
Erik de Castro Lopo -
Erik de Castro Lopo -
Frank Barknecht -
ross＠jose.lug.udel.edu