10 Jan
2012
10 Jan
'12
3:38 p.m.
[re-arranged top-posted]
On 01/10/2012 02:59 PM, Vytautas Jancauskas wrote:
On Tue, Jan 10, 2012 at 2:47 PM, Robin Gareus
<robin(a)gareus.org> wrote:
Thanks, indeed. Python's also the only solution I found:
https://github.com/endolith/freesound-thumbnailer/blob/master/wav2png.py
It's also pretty straight-forward in C; but before whipping up
`sndfile-waveform`, I'd thought I ask around.
robin
Hi *,
Is there a command-line tool akin to `sndfile-spectrogram` that
generates an image (preferably PNG) of an audio wave-form?
I found endless GUI apps, but command-line tools are scarce.
TIA
robin
It's fairly trivial to write one your own with python using scipy.
Should be in the ballpark of 20 lines or so. 
10 Jan
10 Jan
8:43 p.m.
New subject: sndfile-waveform PNG generator ?
On Tue, Jan 10, 2012 at 03:38:39PM +0100, Robin Gareus wrote:
[...]
It's also pretty straight-forward in C; but before whipping up
`sndfile-waveform`, I'd thought I ask around.
Hi Robin
I'm trying to wrap up a first release of 'libwaveform'
which mostly outputs to opengl using textures or shader
programs, but I could add a PNG output tomorrow if you
are interested. What command line args do you need?
While I am posting to the list, I would like to improve
the antialiasing and shading; does anyone have any
particularly good examples of waveform displays that
could be used for inspiration? (could be movie screenshots,
applications, whatever...)
Regards
--
Tim Orford
9:32 p.m.
New subject: sndfile-waveform PNG generator ?
On 01/10/2012 08:42 PM, Tim Orford wrote:
On Tue, Jan 10, 2012 at 03:38:39PM +0100, Robin Gareus
wrote:
Hi Tim,
dreaming up --help:
Usage: snd2png <audio-file-name>
Options:
-o <filename> write PNG to file instead of STDOUT
-w width in pixels (default 800)
-h height in pixels (default 192)
maybe:
-A annotate axes with sample-number (X), value (Y).
add info-box: sample-rate, bit-format.
-c foreground color (RGBA) 0x000000ff (black)
-C background color (RGBA) 0xffffff80 (semi transp white)
maybe later:
-l log-scale
-r rectified waveform shape
-F <font> specify font for annotations
-t <fps> use timecode instead of sample-numbers for x-axis
-T timecode start-offset - override BWF header info
-M add meta-data to annotations.
-f FFT analyze, colour highlight peak freq.
In general: keep it professional (scientific) and simple.
I've been thinking of throwing some time at forking sndfile-spectrogram
which already has all required infrastructure (and more). I don't think
a dedicated libwaveform is needed. It's pretty straight forward, isn't
it? I was actually surprised that there's actually no sndfile-waveform
tool, yet! -- Yeah right. It's a gimmick :)
[...]
It's also pretty straight-forward in C; but before whipping up
`sndfile-waveform`, I'd thought I ask around.
Hi Robin
I'm trying to wrap up a first release of 'libwaveform'
which mostly outputs to opengl using textures or shader
programs, but I could add a PNG output tomorrow if you
are interested. What command line args do you need? While I am posting to the list, I would like to
improve
the antialiasing and shading;
AFAIK you can use cairo-surface as OpenGL-textures.
does anyone have any
particularly good examples of waveform displays that
could be used for inspiration? (could be movie screenshots,
applications, whatever...)
Nope, none that you would not already know.
That reminds me: How are things going with SampleCat?
Regards
--
Tim Orford
greetings,
robin
10:13 p.m.
New subject: sndfile-waveform PNG generator ?
Robin Gareus wrote:
I was actually surprised that there's actually no
sndfile-waveform
tool, yet! -- Yeah right. It's a gimmick :)
You write it and I'll be happy to add it to sndfile-tools.
Erik
--
----------------------------------------------------------------------
Erik de Castro Lopo
http://www.mega-nerd.com/
11 Jan
11 Jan
2:36 a.m.
New subject: sndfile-waveform PNG generator ?
Robin Gareus wrote:
Hi Erik!
Deal :)
I'm on it. First basic version is working; now I only need to wrap my
head around your code-indentation style. :)
Is there a [git] repository for sndfile-tools? I pragmatically based the
patch on the 1.03 tarball.
Preview: http://rg42.org/gitweb/?p=sndfile-tools.git;a=summary
Please give me a few days to wrap it up.. there's a few [more] options
planned, as well.
Cheers!
robin
I was actually surprised that there's
actually no sndfile-waveform
tool, yet! -- Yeah right. It's a gimmick :)
You write it and I'll be happy to add it to sndfile-tools.
Erik
6:04 p.m.
New subject: sndfile-waveform PNG generator ?
Robin Gareus
wrote:
I was actually surprised that there's
actually no sndfile-waveform
tool, yet! -- Yeah right. It's a gimmick :)
You write it and I'll be happy to add it to sndfile-tools.
Erik
14 Jan
14 Jan
3:57 a.m.
New subject: sndfile-waveform PNG generator ?
Robin Gareus wrote:
Documentation, patch and some example images are at:
http://rg42.org/wiki/sndfile-waveform
Let me know what you think.
Any additional feature requests, default-value changes, anyone?
I've just moved the sndfile-tools repo to github:
https://github.com/erikd/sndfile-tools
I'll be pulling sndfile-waveform into that repo.
Thanks and cheers,
Erik
--
----------------------------------------------------------------------
Erik de Castro Lopo
http://www.mega-nerd.com/
11 Jan
11 Jan
6:21 a.m.
New subject: sndfile-waveform PNG generator ?
have had good luck w https://github.com/cappelnord/waveformgen
10 Jan
10 Jan
11:36 p.m.
New subject: sndfile-waveform PNG generator ?
On Tue, Jan 10, 2012 at 09:32:08PM +0100, Robin Gareus wrote:
On 01/10/2012 08:42 PM, Tim Orford wrote:
This will be awesome! IIUC, it sounds like just the sort of thing
I could glue into Nama for visualizing waveforms.
(snip)
On Tue, Jan 10, 2012 at 03:38:39PM +0100, Robin
Gareus wrote:
Hi Tim,
dreaming up --help:
Usage: snd2png <audio-file-name>
Options:
-o <filename> write PNG to file instead of STDOUT
-w width in pixels (default 800)
-h height in pixels (default 192)
maybe:
-A annotate axes with sample-number (X), value (Y).
add info-box: sample-rate, bit-format.
-c foreground color (RGBA) 0x000000ff (black)
-C background color (RGBA) 0xffffff80 (semi transp white)
maybe later:
-l log-scale
-r rectified waveform shape
-F <font> specify font for annotations
-t <fps> use timecode instead of sample-numbers for x-axis
-T timecode start-offset - override BWF header info
-M add meta-data to annotations.
-f FFT analyze, colour highlight peak freq.
In general: keep it professional (scientific) and simple.
I've been thinking of throwing some time at forking sndfile-spectrogram
which already has all required infrastructure (and more). I don't think
a dedicated libwaveform is needed. It's pretty straight forward, isn't
it? I was actually surprised that there's actually no sndfile-waveform
tool, yet! -- Yeah right. It's a gimmick :) [...]
It's also pretty straight-forward in C; but before whipping up
`sndfile-waveform`, I'd thought I ask around.
Hi Robin
I'm trying to wrap up a first release of 'libwaveform'
which mostly outputs to opengl using textures or shader
programs, but I could add a PNG output tomorrow if you
are interested. What command line args do you need? greetings,
robin
--
Joel Roth
2 Feb
2 Feb
10:15 p.m.
New subject: libwaveform was Re: sndfile-waveform PNG generator ?
Tim,
I'm wondering how 'libwaveform' is coming along. I am curious to check out
your
work.
-Alex
On 0, Tim Orford <tim(a)orford.org> wrote:
On Tue, Jan 10, 2012 at 03:38:39PM +0100, Robin Gareus
wrote:
[...]
It's also pretty straight-forward in C; but before whipping up
`sndfile-waveform`, I'd thought I ask around.
Hi Robin
I'm trying to wrap up a first release of 'libwaveform'
which mostly outputs to opengl using textures or shader
programs, but I could add a PNG output tomorrow if you
are interested. What command line args do you need?
While I am posting to the list, I would like to improve
the antialiasing and shading; does anyone have any
particularly good examples of waveform displays that
could be used for inspiration? (could be movie screenshots,
applications, whatever...)
Regards
--
Tim Orford
_______________________________________________
Linux-audio-user mailing list
Linux-audio-user(a)lists.linuxaudio.org
http://lists.linuxaudio.org/listinfo/linux-audio-user
11:04 p.m.
New subject: libwaveform was Re: sndfile-waveform PNG generator ?
Alex Norman wrote:
Tim,
I'm wondering how 'libwaveform' is coming along. I am curious to check out
your
work.
Not libwaveform, but Robin Gareus added sndfile-waveform to the
sndfile-tools package. Currently its only in git:
https://github.com/erikd/sndfile-tools
but example output is here:
https://github.com/erikd/sndfile-tools/blob/master/doc/wave-example.png
Erik
--
----------------------------------------------------------------------
Erik de Castro Lopo
http://www.mega-nerd.com/
11:25 p.m.
New subject: libwaveform was Re: sndfile-waveform PNG generator ?
On Fri, Feb 03, 2012 at 09:04:46AM +1100, Erik de Castro Lopo wrote:
Alex Norman wrote:
I'm wondering, too.
My naive attempt to compile (adding various libraries along
the way) got stuck.
(master) ~/build/sndfile-tools $ ./autogen.sh
checking for autoconf... yes
checking for automake... yes
checking for libtool... libtoolize
checking for pkg-config ... yes
I am going to run ./configure with no arguments - if you wish
to pass any to it, please specify them on the ./autogen.sh command line.
Generating configuration files for sndfile-tools, please wait ...
(...)
-=-=-=-=-=-=-=-=-=-= Configuration Complete =-=-=-=-=-=-=-=-=-=-=-
Configuration summary :
Version ....................... 1.04
Enable debugging .............. no
Tools :
Compiler is GCC ............... yes
GCC major version ............. 4
Extra tools required for testing and examples :
Found SNDFILE ................. yes
Found SAMPLERATE .............. yes
Found FFTW .................... yes
Found CAIRO ................... yes
Found JACK .................... yes
Installation directories :
Program directory ............. /usr/local/bin
(master) ~/build/sndfile-tools $ make
CCLD src/sndfile-spectrogram
/usr/bin/ld: warning: libxcb-shm.so.0, needed by /usr/lib/libcairo.so, not found (try
using -rpath or -rpath-link)
[it's here: /usr/lib/x86_64-linux-gnu/libxcb-shm.so.0 ]
/usr/bin/ld: warning: libxcb.so.1, needed by /usr/lib/libcairo.so, not found (try using
-rpath or -rpath-link)
[it's here: /usr/lib/x86_64-linux-gnu/libxcb.so.1 ]
/usr/lib/libcairo.so: undefined reference to `xcb_depth_visuals_iterator'
(...)
collect2: ld returned 1 exit status
make: *** [src/sndfile-spectrogram] Error 1
I tried adding some -rpath or -rpath-link arguments
to the Makefile LD and LDPATH lines, but to no avail.
Thanks.
-joel
Tim,
I'm wondering how 'libwaveform' is coming along. I am curious to check out
your
work.
Not libwaveform, but Robin Gareus added sndfile-waveform to the
sndfile-tools package. Currently its only in git:
https://github.com/erikd/sndfile-tools
but example output is here:
https://github.com/erikd/sndfile-tools/blob/master/doc/wave-example.png
Erik
--
Joel Roth
11:58 p.m.
New subject: libwaveform was Re: sndfile-waveform PNG generator ?
Joel Roth wrote:
My naive attempt to compile (adding various libraries
along
the way) got stuck.
<snip>
Found CAIRO ................... yes
That means that Cairo thinks it is installed correctly.
Found JACK .................... yes
Installation directories :
Program directory ............. /usr/local/bin
(master) ~/build/sndfile-tools $ make
CCLD src/sndfile-spectrogram
/usr/bin/ld: warning: libxcb-shm.so.0, needed by /usr/lib/libcairo.so, not found (try
using -rpath or -rpath-link)
But the linker disagrees.
You didn't say whay distro you're on, so my best advice is to make
sure you install stuff like Cairo from your distro, making sure to
install the -devel packages as well and then retry.
Erik
--
----------------------------------------------------------------------
Erik de Castro Lopo
http://www.mega-nerd.com/
4475
days inactive
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12 comments
6 participants
participants (6)
-
Alex Norman -
carmen -
Erik de Castro Lopo -
Joel Roth -
Robin Gareus -
Tim Orford