8 Jun
2004
8 Jun
'04
4:03 a.m.
Hi.
It is small, dumb, and simple, but I just couldn't resist
letting you all know about my first Linux audio application
written in C (well, actually C++, but I had no choice!)
What is it?
Yatm is a small command-line mp3 player with tempo variation capabilities.
It uses libao for audio output, libmad to decode
MPEG audio, and libsoundtouch to do the tempo changing.
A sample usage case would be for listening to audiobooks
at a different tempo than originally recorded. It could also
be used as a backend for DAISY Digital Talking Book format player
in the future (see http://www.daisy.org/).
The name Yatm stands for Yet Another Time Machine :-).
Where is it?
http://delysid.org/yatm-0.1.0.tar.gz
TODO:
* Add support for seeking and timed playback (using the original
time of the audio file, such that indexes into a file do not need
to be translated according to current tempo)
* Add support for playing RIFF WAV files and OGG/Vorbis.
* Add a simple command-line interactive mode to be able to
change tempo during playback without interrupting the program.
* Add the ability to define several indices at startup
which will be reported to stdout when reached.
This could be used to advance a reading cursor when presenting a DAISY
book which does have detailed index information.
Since this is my first Linux Audio app, comments are
highly appreciated.
--
CYa,
Mario | Debian Developer <URL:http://debian.org/>
| Get my public key via finger mlang(a)db.debian.org
| 1024D/7FC1A0854909BCCDBE6C102DDFFC022A6B113E44
13 Jun
13 Jun
11:07 a.m.
Florian Schmidt <mista.tapas(a)gmx.net> writes:
On Tue, 08 Jun 2004 09:54:17 +0200
Mario Lang <mlang(a)delysid.org> wrote:
Yes, exactly, thats the point of the tool. I primarily use it to
listen to speech recordings at a higher tempo then they were recorded with.
http://delysid.org/yatm-0.2.3.tar.gz (now suppots Vorbis and Speex too)
--
CYa,
Mario | Debian Developer <URL:http://debian.org/>
| Get my public key via finger mlang(a)db.debian.org
| 1024D/7FC1A0854909BCCDBE6C102DDFFC022A6B113E44
Yatm is a small command-line mp3 player with
tempo variation capabilities.
does it change the tempo without changing the pitch (a.k.a time stretching)> 
11:37 a.m.
On Sun, 13 Jun 2004 16:58:10 +0200
Mario Lang <mlang(a)delysid.org> wrote:
Hi, now this sounds good. Gonna check it out.. Good for figuring out changes to jazz
songs..
One more question though: There's afaik a similar progrm available for windows, but it
supposedly has one other killer feature. It does a Fourier transform to help figuring out
pitches and chords. Do you plan something like that?
Florian Schmidt
--
Palimm Palimm!
does it change
the tempo without changing the pitch (a.k.a time stretching)>
Yes, exactly, thats the point of the tool. I primarily use it to
listen to speech recordings at a higher tempo then they were recorded with.
http://delysid.org/yatm-0.2.3.tar.gz (now suppots Vorbis and Speex too)
1:47 p.m.
Florian Schmidt <mista.tapas(a)gmx.net> writes:
One more question though: There's afaik a similar
progrm available for
windows, but it supposedly has one other killer feature. It does a
Fourier transform to help figuring out pitches and chords. Do you
plan something like that?
No, I do not plan to implement any chord detection / PCM
to MIDI functionality.
--
CYa,
Mario | Debian Developer <URL:http://debian.org/>
| Get my public key via finger mlang(a)db.debian.org
| 1024D/7FC1A0854909BCCDBE6C102DDFFC022A6B113E44
3 p.m.
On Sun, 13 Jun 2004 19:23:38 +0200
Mario Lang <mlang(a)delysid.org> wrote:
Florian Schmidt <mista.tapas(a)gmx.net> writes:
Hmm.. Would you mind a collaboration to add it? I just tried your program. it has not gui
:) yes, displaying Fourier transforms would be tough with no gui..
I also experienced that it run for about 10 secs, then heavy stuttrs set in, when using
time < 1.0. Even with 0.8..
Florian Schmidt
--
Palimm Palimm!
One more question though: There's afaik a
similar progrm available for
windows, but it supposedly has one other killer feature. It does a
Fourier transform to help figuring out pitches and chords. Do you
plan something like that?
No, I do not plan to implement any chord detection / PCM
to MIDI functionality.
3:10 p.m.
On Sun, 13 Jun 2004 20:56:35 +0200
Florian Schmidt <mista.tapas(a)gmx.net> wrote:
Hmm.. Would you mind a collaboration to add it? I just
tried your program. it has not gui :) yes, displaying Fourier transforms would be tough
with no gui..
I also experienced that it run for about 10 secs, then heavy stuttrs set in, when using
time < 1.0. Even with 0.8..
Hmm, this seems to be related to switching desktops and/or window movement.. Might be the
staircase scheduler in my 2.6.7rc3 kernel, too.. So plese ignore.
Flo
--
Palimm Palimm!
4:43 p.m.
Florian Schmidt <mista.tapas(a)gmx.net> writes:
On Sun, 13 Jun 2004 19:23:38 +0200
Mario Lang <mlang(a)delysid.org> wrote:
Not as tough as it would be to enable me to actually see[1] it. :-)
[1] http://delysid.org/about.html
--
CYa,
Mario | Debian Developer <URL:http://debian.org/>
| Get my public key via finger mlang(a)db.debian.org
| 1024D/7FC1A0854909BCCDBE6C102DDFFC022A6B113E44
Florian Schmidt <mista.tapas(a)gmx.net>
writes:
Hmm.. Would you mind a collaboration to add it? I just tried your program.
it has not gui :) yes, displaying Fourier transforms would be tough
with no gui.. One more question though: There's afaik a
similar progrm available for
windows, but it supposedly has one other killer feature. It does a
Fourier transform to help figuring out pitches and chords. Do you
plan something like that?
No, I do not plan to implement any chord detection / PCM
to MIDI functionality.
6:05 p.m.
On Sun, 13 Jun 2004 22:34:08 +0200
Mario Lang <mlang(a)delysid.org> wrote:
Oh ok, point taken. Hmm, i wonder if there's no solution to this problem.. Maybe it
would be possible to do a fourier transform and then spit out the strongest partials in
textual form, either as frequency(hz) or as musical notes.. Might be an interesting
experiment, to see if the info from the frequency domain can be textualized in some
relevant form..
Hmm, i just had an idea which probably thousands of people had before me: Wouldn't it
be useful to have something like a 10x10cm area where 2d-graphics were translated into
height patterns, thus making bitmaps kinda accessible to the blind.. You know these things
made of hundreds of nails which you can put into some form by pressing your hand onto them
or any other solid object. Now reverse the process and you have a physical height
representation of a greyscale bitmap image. Probably very expensive to construct and
manufacture though..
Florian Schmidt
--
Palimm Palimm!
Hmm.. Would
you mind a collaboration to add it? I just tried your program.
it has not gui :) yes, displaying Fourier transforms would be tough
with no gui..
Not as tough as it would be to enable me to actually see[1] it. :-)
[1] http://delysid.org/about.html
14 Jun
14 Jun
7:04 a.m.
Florian Schmidt <mista.tapas(a)gmx.net> writes:
On Sun, 13 Jun 2004 22:34:08 +0200
Mario Lang <mlang(a)delysid.org> wrote:
Oh ok, point taken. Hmm, i wonder if there's no solution to this problem..
Maybe it would be possible to do a fourier transform and then spit
out the strongest partials in textual form, either as frequency(hz)
or as musical notes..
Sounds like a useable solution.
[...]
Hmm..
Would you mind a collaboration to add it? I just tried your program.
it has not gui :) yes, displaying Fourier transforms would be tough
with no gui..
Not as tough as it would be to enable me to actually see[1] it. :-)
[1] http://delysid.org/about.html Hmm, i just had an idea which probably thousands of
people had before me:
Wouldn't it be useful to have something like a 10x10cm area where
2d-graphics were translated into height patterns, thus making
bitmaps kinda accessible to the blind..
Exists, is called Braille Window[1], and costs about the same amount
of money as a new car. I think that should also explain to you why
the usual blind guy doesn't own such a thing.
[1] http://www.icap.nu/gwp.html
--
CYa,
Mario | Debian Developer <URL:http://debian.org/>
| Get my public key via finger mlang(a)db.debian.org
| 1024D/7FC1A0854909BCCDBE6C102DDFFC022A6B113E44
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Mario Lang