[gentoo-user] tone generator

[gentoo-user] tone generator

[maxim wexler]

Hi group,

Anybody know of a gentoo/linux tone generator that
will output test tones, sine waves, triangle waves and
the like.

Prefer command line/ncurses.

Maxim


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Re: [gentoo-user] tone generator

[Willie Wong]

On Thu, Jan 24, 2008 at 11:41:04AM -0800, maxim wexler wrote:
> Anybody know of a gentoo/linux tone generator that
> will output test tones, sine waves, triangle waves and
> the like.
> 
> Prefer command line/ncurses.
> 

One of my friends coded something like this once as a plug-in for
XMMS. Can't seem to find it now. Perhaps you'd have better luck than
I. 

On the other hand, a little bit of C++ should be fairly easy. First
you need the 'play' program from sox. 'play' can play files in the
'raw' format, which is just a stream of words that gives the amplitude
of the waveform. For example

play -t raw -s l -f s -c 1 -r 30000 -

takes as input stdin, plays mono channel sound from a stream that is
signed-linear, 300000 hertz sample rate, and with amplitude described
by 32 bit long word. Next you just need a waveform generator. A C++
snipplet from something I cobbled together several years ago (yes yes,
my coding practice can stand much improvement, so sue me)

#include <stdio.h>
#include <unistd.h>
#include <math.h>

int main()
{
        int rate = 30000;
        int coramp = 0xCEFFFFF;

        int tempamp=0;
        
        float totalamp=0;
        
        int f_count;    
        while(1) for(f_count=0; f_count < rate; f_count++)
        {
                totalamp=sinf( ((float)f_count) * 440 / rate * 2 * M_PI);
                tempamp = (int) (coramp * totalamp);
                printf("%c%c%c%c%c%c%c%c", (char) (tempamp), (char) (tempamp >> 8), (char) (tempamp >> 16), (char) (tempamp >> 24), (char) (tempamp), (char) (tempamp >> 8), (char) (tempamp >> 16), (char) (tempamp >> 24));
        }
        return 0;
}

Yes, it is an infinite loop. 
The sinf makes it a sine wave. You can code your own triangle wave. 
THe 440 makes it output A-440. It is the frequency. 
coramp is an amplifying factor. 

compile it, run it like 

 ./a.out | play -t raw -s l -f s -c 1 -r 30000 -

And you should get A-440 out of your speakers. 

W
-- 
Willie W. Wong                                      wwong@math.princeton.edu
408 Fine Hall,  Department of Mathematics,  Princeton University,  Princeton
A mathematician's reputation rests on the number of bad proofs he has given.
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Re: [gentoo-user] tone generator

[maxim wexler]

> 
>  ./a.out | play -t raw -s l -f s -c 1 -r 30000 -
> 
> And you should get A-440 out of your speakers. 
> 

eathen@localhost ~/docs/c-prog $ ./a.out |play -t raw
-s l -f s -c 1 -r 3000 -
play soxio: Failed reading `-': unknown file type

and without the hyphen

heathen@localhost ~/docs/c-prog $ ./play |play -t raw
-s l -f s -c 1 -r 3000
play soxio: Can't open input file `s': No such file or
directory

doesn't like swapping 'l' for '1' either



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Re: [gentoo-user] tone generator

[Willie Wong]

On Thu, Jan 24, 2008 at 02:27:24PM -0800, maxim wexler wrote:
> > 
> >  ./a.out | play -t raw -s l -f s -c 1 -r 30000 -
> > 
> > And you should get A-440 out of your speakers. 
> > 
> 
> eathen@localhost ~/docs/c-prog $ ./a.out |play -t raw
> -s l -f s -c 1 -r 3000 -
> play soxio: Failed reading `-': unknown file type
> 

rate really wants to be 30000, or your note will have a 
frequency off by a factor of 10. But that is not the problem here. 

Perhaps revdep-rebuild or rebuilding sox by hand? Usually when sox is
having problems after you explicitly specify the file format (by -t
raw) that means you have some sort of linking error with your
libraries. 

Hum, by any chance you are using sox-14.0.0? My desktop is still on
12.17.9 and has no problems, and a quick search suggests that the
unknown file type problem also affects Debian and other distros. 

I will take a look using my laptop later tonight to see if it is a
problem with sox-14.0.0.

W

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408 Fine Hall,  Department of Mathematics,  Princeton University,  Princeton
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Re: [gentoo-user] tone generator

[maxim wexler]

> 
> compile it, run it like 
> 
>  ./a.out | play -t raw -s l -f s -c 1 -r 30000 -
> 


This works, sort of. Sounds like a dentist drill going
in an out. 

heathen@localhost ~/docs/c-prog $ ./a.out | aplay -t
raw   -f  cdr
Playing raw data 'stdin' : Signed 16 bit Big Endian,
Rate 44100 Hz, Stereo
^@Aborted by signal Interrupt...

heathen@localhost ~/docs/c-prog $ ./a.out | aplay -t
raw   -f  dat
Playing raw data 'stdin' : Signed 16 bit Little
Endian, Rate 48000 Hz, Stereo
Aborted by signal Interrupt...

heathen@localhost ~/docs/c-prog $ ./a.out | aplay -t
raw   -f  cd
Playing raw data 'stdin' : Signed 16 bit Little
Endian, Rate 44100 Hz, Stereo
Aborted by signal Interrupt...

And there are a bunch of other formats under aplay
--help but nothing like a pure tone.

-mw





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Re: [gentoo-user] tone generator

[Willie Wong]

On Thu, Jan 24, 2008 at 03:06:38PM -0800, Penguin Lover maxim wexler squawked:
> > 
> > compile it, run it like 
> > 
> >  ./a.out | play -t raw -s l -f s -c 1 -r 30000 -
> > 
> 
> 
> This works, sort of. Sounds like a dentist drill going
> in an out. 
> 
> heathen@localhost ~/docs/c-prog $ ./a.out | aplay -t
> raw   -f  cdr
> Playing raw data 'stdin' : Signed 16 bit Big Endian,
> Rate 44100 Hz, Stereo

This is because the code outputs it as 32 bit signed with 30000 Hz
rate. The defaults of aplay is sampling it incorrectly, which is why
the file sounds off. 

Now, I think I know what the problem is with sox:
 1) the commandline syntax changed between 12.* and 14.0, the switches
 I need should be 
    play -t raw -s -4 -c 1 -r 30000
 (c.f. man play). 
 
 2) Despite what the man pages say, the '-' switch for reading from
 stdin seems to be broken. Probably a bug. I'll test more and possibly
 file a bug report. 

On the other hand, since you have aplay installed, the right syntax
should be

 ./a.out | aplay -t raw -f S32_LE -c 1 -r 30000

Which says to use 32 bit little endian with 1 channel at a sample rate
of 30000. 

Unfortunately, if you do that, you won't hear a thing. Why? I got my
multiplier wrong in the testing program that I send you. I missed half
a byte. Change the definition for coramp (which controls the
amplification) to

int coramp = 0xCFFFFFFF;

(The reason that I missed half a byte was that I was messing around
with harmonics and multiple voicing... so each harmonic needs to be
suitably rescaled in amplitude.)

Hope that helps, 

W
-- 
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but because I know they're just sitting there thinking up ways to get even.
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Re: [gentoo-user] tone generator

[maxim wexler]

 compile it, run it like 
> 
>  ./a.out | play -t raw -s l -f s -c 1 -r 30000 -
> 
> And you should get A-440 out of your speakers. 

OK, got it:

heathen@localhost ~/docs/c-prog $ sox -t nul /dev/null
sine.wav synth 10.0 sine  440.0 | aplay sine.wav
Playing WAVE 'sine.wav' : Signed 16 bit Little Endian,
Rate 44100 Hz, Mono

Sox Rox


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Re: [gentoo-user] tone generator

[Willie Wong]

On Thu, Jan 24, 2008 at 03:22:00PM -0800, Penguin Lover maxim wexler squawked
> OK, got it:
> 
> heathen@localhost ~/docs/c-prog $ sox -t nul /dev/null
> sine.wav synth 10.0 sine  440.0 | aplay sine.wav
> Playing WAVE 'sine.wav' : Signed 16 bit Little Endian,
> Rate 44100 Hz, Mono

Better yet (I didn't know that play can do it itself... sox needs
better documentation)

play -n -c1 synth 10.0 <waveform>

waveforms that I've tried: saw, sine, square

Have fun. 

W
-- 
"The last time anybody made a list of the top hundred 
character attributes of New Yorkers, common sense snuck in 
at number 79. ....
When it's fall in New York, the air smells as if someone's 
been frying goats in it, and if you are keen to breathe the 
best plan is to open a window and stick your head in a 
building." 

- Nuff said?? 
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Re: [gentoo-user] tone generator

[Etaoin Shrdlu]

On Thursday 24 January 2008, maxim wexler wrote:

> Hi group,
>
> Anybody know of a gentoo/linux tone generator that
> will output test tones, sine waves, triangle waves and
> the like.
>
> Prefer command line/ncurses.

Maybe audacity can do that? (I don't use it so I don't know). However, a 
bit of googling found this (apparently not command line, but seemingly 
quite simple):

http://www.aa6e.net/aa6e/software/tone/index.html

No idea whether it will work under gentoo, hope this helps anyway.
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Re: [gentoo-user] tone generator

[Liviu Andronic]

You might be interseted in rezound; it is graphical, however.
Liviu

On 1/24/08, maxim wexler <blissfix@yahoo.com> wrote:
> Hi group,
>
> Anybody know of a gentoo/linux tone generator that
> will output test tones, sine waves, triangle waves and
> the like.
>
> Prefer command line/ncurses.
>
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Re: [gentoo-user] tone generator

[Hemmann, Volker Armin]

On Donnerstag, 24. Januar 2008, maxim wexler wrote:

http://www.linux.org/apps/AppId_2452.html
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Re: [gentoo-user] tone generator

[maxim wexler]

--- "Hemmann, Volker Armin"
<volker.armin.hemmann@tu-clausthal.de> wrote:

> On Donnerstag, 24. Januar 2008, maxim wexler wrote:
> 
> http://www.linux.org/apps/AppId_2452.html
> -- 

Yeah, I found that. It's going into the queue.

> gentoo-user@lists.gentoo.org mailing list
> 
> 



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Re: [gentoo-user] tone generator

[Iain Buchanan]

Hi,

On Thu, 2008-01-24 at 11:41 -0800, maxim wexler wrote:
> Hi group,
> 
> Anybody know of a gentoo/linux tone generator that
> will output test tones, sine waves, triangle waves and
> the like.
> 
> Prefer command line/ncurses.

I used to do this quite easily from XMMS to tune my guitar - never tried
it with it's spinoffs though (bmp, etc)

To do it was quite simple, you get the frequencies you want and stick
them in a file like so:

#EXTM3U
#EXTINF:-1,Tone Generator:  82.4 Hz;164.8 Hz;247.2 Hz;329.6 Hz
tone://82.407;164.814;247.221;329.628
#EXTINF:-1,Tone Generator:  110.0 Hz;220.0 Hz;330.0 Hz;440.0 Hz
tone://110.000;220.000;330.000;440.000
#EXTINF:-1,Tone Generator:  146.8 Hz;293.7 Hz;440.5 Hz;587.3 Hz
tone://146.832;293.665;440.497;587.330
#EXTINF:-1,Tone Generator:  196.0 Hz;392.0 Hz;588.0 Hz;784.0 Hz
tone://195.998;391.995;587.993;783.991
#EXTINF:-1,Tone Generator:  246.9 Hz;493.9 Hz;740.8 Hz;987.8 Hz
tone://246.942;493.883;740.825;987.767
#EXTINF:-1,Tone Generator:  329.6 Hz;659.3 Hz;988.9 Hz;1318.5 Hz
tone://329.628;659.255;988.883;1318.510

these are base frequencies and harmonics for E, A, D, G, B and E
strings.  Then I just open the file in xmms and play!

However, I'm sure there was some plugin I needed... It was called "tone
generator" or something... sorry for being vague, but it's been a while
since I used this method :)  If you want me to do some more digging,
then let me know!

HTH,
-- 
Iain Buchanan <iaindb at netspace dot net dot au>

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Re: [gentoo-user] tone generator

[maxim wexler]

> 
> #EXTM3U
> #EXTINF:-1,Tone Generator:  82.4 Hz;164.8 Hz;247.2
> Hz;329.6 Hz
> tone://82.407;164.814;247.221;329.628
> #EXTINF:-1,Tone Generator:  110.0 Hz;220.0 Hz;330.0
> Hz;440.0 Hz
> tone://110.000;220.000;330.000;440.000
> #EXTINF:-1,Tone Generator:  146.8 Hz;293.7 Hz;440.5
> Hz;587.3 Hz
> tone://146.832;293.665;440.497;587.330
> #EXTINF:-1,Tone Generator:  196.0 Hz;392.0 Hz;588.0
> Hz;784.0 Hz
> tone://195.998;391.995;587.993;783.991
> #EXTINF:-1,Tone Generator:  246.9 Hz;493.9 Hz;740.8
> Hz;987.8 Hz
> tone://246.942;493.883;740.825;987.767
> #EXTINF:-1,Tone Generator:  329.6 Hz;659.3 Hz;988.9
> Hz;1318.5 Hz
> tone://329.628;659.255;988.883;1318.510
> 
> these are base frequencies and harmonics for E, A,
> D, G, B and E
> strings.  Then I just open the file in xmms and
> play!
> 
> However, I'm sure there was some plugin I needed...
> It was called "tone
> generator" or something... sorry for being vague,
> but it's been a while

Played right off the bat in audacious! Thanks! How is
that 'Tone Generator' formatted. Is there a HOWTO for
it?




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Re: [gentoo-user] tone generator

[Iain Buchanan]

On Thu, 2008-01-24 at 15:45 -0800, maxim wexler wrote:
> > 
> > #EXTM3U
> > #EXTINF:-1,Tone Generator:  82.4 Hz;164.8 Hz;247.2
> > Hz;329.6 Hz
> > tone://82.407;164.814;247.221;329.628

[snip]

> Played right off the bat in audacious! Thanks! How is
> that 'Tone Generator' formatted.

I could only guess what you could - # starts a comment, otherwise a line
is:
tone://<freq1>;<freq2>...

>  Is there a HOWTO for
> it?

I've been searching ever since I wrote that email, but I can't find any
info anywhere.  I think this tone generator function was borrowed from
beep, which was in turn borrowed from xmms, so the documentation no
doubt got lost in the many transitions...

all I can find is a vague xmms reference to "Tonegen".  You might try
looking for a tonegen.c file in audacious... If I find more, I'll let
you know.

cya,
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Re: [gentoo-user] tone generator

[Iain Buchanan]

On Fri, 2008-01-25 at 10:28 +0930, Iain Buchanan wrote:

> all I can find is a vague xmms reference to "Tonegen".  You might try
> looking for a tonegen.c file in audacious... If I find more, I'll let
> you know.


all I can find is the file src/tonegen/tonegen.c in audacious-plugins
which has this comment:

_("About Tone Generator"),
_("Sinus tone generator by Haavard Kvaalen <havardk@xmms.org>\n"
  "Modified by Daniel J. Peng <danielpeng@bigfoot.com>\n\n"
  "To use it, add a URL: tone://frequency1;frequency2;frequency3;...\n"
  "e.g. tone://2000;2005 to play a 2000Hz tone and a 2005Hz tone"),

so I think that's it... unless you feel like editing the source to play
other waves ;)
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	Trendy dance for hip programmers.

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Re: [gentoo-user] tone generator

[maxim wexler]

> all I can find is the file src/tonegen/tonegen.c in
> audacious-plugins

Seems to be a different file than

www.lns.com/papers/tonegen/tonegen.c 

-mw


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Re: [gentoo-user] tone generator

[Iain Buchanan]

On Thu, 2008-01-24 at 18:13 -0800, maxim wexler wrote:
> > all I can find is the file src/tonegen/tonegen.c in
> > audacious-plugins
> 
> Seems to be a different file than
> 
> www.lns.com/papers/tonegen/tonegen.c 

ah, then your previous Q. is easy.  Looking at the above c file, it says
#ifdef LINUX
#include <linux/soundcard.h>
#define DSP "/dev/dsp"
#else
#include <machine/soundcard.h>
#define DSP "/dev/dspW"
#endif

so you have to define LINUX.  There are a few other things too,
something like this should do it:

gcc -D LINUX -include string.h -lm -o tonegen tonegen.c

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Re: [gentoo-user] tone generator

[maxim wexler]

> something like this should do it:
> 
> gcc -D LINUX -include string.h -lm -o tonegen
> tonegen.c
> 

Yup. Thanks Iain.


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Re: [gentoo-user] tone generator

[Michael Higgins]

On Thu, 24 Jan 2008 20:15:14 -0800 (PST)
maxim wexler <blissfix@yahoo.com> wrote:

> > something like this should do it:
> > 
> > gcc -D LINUX -include string.h -lm -o tonegen
> > tonegen.c
> > 
> 
> Yup. Thanks Iain.

++

Very handy. ;-)

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Re: [gentoo-user] tone generator

[maxim wexler]

> looking for a tonegen.c file in audacious... If I

http://www.lns.com/papers/tonegen/tonegen.c

heathen@localhost ~/docs/elex $ gcc -lm -o tonegen
tonegen.c
tonegen.c:56:31: machine/soundcard.h: No such file or
directory
tonegen.c: In function `main':
tonegen.c:172: error: `SNDCTL_DSP_GETFMTS' undeclared
(first use in this function)
tonegen.c:172: error: (Each undeclared identifier is
reported only once
tonegen.c:172: error: for each function it appears
in.)
tonegen.c:181: error: `SNDCTL_DSP_STEREO' undeclared
(first use in this function)
tonegen.c:196: error: `SNDCTL_DSP_SPEED' undeclared
(first use in this function)

tonegen wants a machine/soundcard.h which doesn't
exist on my system.

Although:

$ slocate soundcard.h
/usr/src/linux-2.6.12-gentoo-r6/include/linux/soundcard.h
/usr/src/linux-2.6.20-gentoo-r6/include/linux/soundcard.h
/usr/src/linux-2.6.16-gentoo-r3/include/linux/soundcard.h
/usr/include/sys/soundcard.h
/usr/include/linux/soundcard.h

The only 'machine/' on my system is under arch/arm26/.

-mw



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Re: [gentoo-user] tone generator

[Iain Buchanan]

On Thu, 2008-01-24 at 18:00 -0800, maxim wexler wrote:
> > looking for a tonegen.c file in audacious... If I
> 
> http://www.lns.com/papers/tonegen/tonegen.c
> 
> heathen@localhost ~/docs/elex $ gcc -lm -o tonegen
> tonegen.c
> tonegen.c:56:31: machine/soundcard.h: No such file or
> directory

[snip]

> tonegen wants a machine/soundcard.h which doesn't
> exist on my system.

[snip]

probably because it's made to go with audacious, which is why the file I
supplied played "out of the box".  It's already compiled into audacious.
Looking at the file, it doesn't make much sense to compile it alone.

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Re: [gentoo-user] tone generator

[Jan Seeger]

On Thu, 24. Jan, maxim wexler spammed my inbox with 
> Hi group,
> 
> Anybody know of a gentoo/linux tone generator that
> will output test tones, sine waves, triangle waves and
> the like.
> 
> Prefer command line/ncurses.
Not sure if that's what you want, but speaker-test from alsa-utils can generate sine waves, pink and
white noise.

Regards,
Jan Seeger
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Re: [gentoo-user] tone generator

[maxim wexler]

> Not sure if that's what you want, but speaker-test
> from alsa-utils can generate sine waves, pink and
> white noise.

heathen@localhost ~ $ speaker-test -t 2

speaker-test 0.0.8

Playback device is plughw:0,0
Stream parameters are 48000Hz, S16_LE, 1 channels
Sine wave rate is 440.0000Hz

But it's silent. Doesn't even say "/dev/dsp already in
use" or something like that. I use alsa and my audio
works OK otherwise. 

More mysteries to unravel.

mw


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Re: [gentoo-user] tone generator

[Michael Higgins]

On Fri, 25 Jan 2008 10:59:25 -0800 (PST)
maxim wexler <blissfix@yahoo.com> wrote:

> > Not sure if that's what you want, but speaker-test
> > from alsa-utils can generate sine waves, pink and
> > white noise.
> 
> heathen@localhost ~ $ speaker-test -t 2
> 
> speaker-test 0.0.8
> 
> Playback device is plughw:0,0
> Stream parameters are 48000Hz, S16_LE, 1 channels
> Sine wave rate is 440.0000Hz
> 
> But it's silent. Doesn't even say "/dev/dsp already in
> use" or something like that. I use alsa and my audio
> works OK otherwise. 
> 
> More mysteries to unravel.

 speaker-test -D default -r 44100 -c 2 -f 880 -t sine

Worked for me.

Cheers,

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csound Re: [gentoo-user] tone generator

[Ralf Stephan]

It's surprising how few people have heard about the most
flexible tone generator (=synth) out there: csound

http://www.csounds.com

The latest package has a Gentoo ebuild, too, which is not
in the repository, however.

You can do *everything* with it, and it's so fast you
can use it as MIDI player, too.


Regards
ralf
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