Linux-audio-dev

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4 participants
7441 discussions

[linux-audio-dev] precise event timer examples (HPET?)

by Alex

Does anyone have any examples that use HPET (or any other high resolution event) timers? I've built HPET support into my kernel but I cannot figure out how to compile the example given in the documentation : /usr/src/linux-2.6.12/Documentation/hpet.txt I have searched the web and I cannot quite figure out how people use these. I'd like to have micro-second precision and I'm wondering if there is a better way then polling the time of day? Thanks, Alex Norman

18 years, 4 months

[linux-audio-dev] Extreme time-stretching sofware v.0.0.2

by Paul

Hi. >Hi Paul, >How does your software compare to SoundTouch in regard >to "less extreme" time >stretching? This algorithm is made especially for extreme time stretching, for "less extreme" I recomand you to try other programs/algorithms :) Paul >many thanks, >Predrag >> Hi. >> I released today the second version of the >> extreme-time-stretching software. >> It's here: >> http://hypermammut.sourceforge.net/src/paulstretch/ > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

18 years, 4 months

[linux-audio-dev] Extreme time-stretching sofware v.0.0.2

by Paul

Hi. I released today the second version of the extreme-time-stretching software. It's here: http://hypermammut.sourceforge.net/src/paulstretch/ News: - Added a graphical user interface (requires wxWidgets). Now you can control the FFT size (buffer size) too. Also, you can use this program as a very interesting effect if you make FFT size large (even if the stretch parameter is close to 1) - Added Ogg Vorbis support for output (requires ogg vorbis libraries) - Added an "optimize" option to the FFT size to make it power of 2 or 3 for speedups (afaik the fftw library is optimised for these kinds of buffers). The disavantage is that the stretch value is now quantised (if you don't like this, you can disable the optimize checkbox). P.S. For now, there is no available resource checking (I mean if your disk is full or the buffer size is too large, the program will crash) Paul __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

18 years, 4 months

[linux-audio-dev] Extreme time-stretching sofware

by Paul

Hi. I rewrote the experimental time-stretching software (discussed in linux-audio-user mailinglist in "How can I time-stretch the sound like this" topic ) and I put it here: http://hypermammut.sourceforge.net/src/paulstretch/ Please listen to audio examples here (with 20x stretching): http://hypermammut.sourceforge.net/src/paulstretch/example/ The algorithm is simple and it's described into the readme.txt from the archive. There is room for improovements to avoid over-smoothing (I wrote in readme.txt how I think that is possible to do). Please tell me your opinion about it. Paul __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

18 years, 4 months

[linux-audio-dev] [PATCH] aubio 0.3.0 makes abionotes work *) with jack & alsa_seq

by karsten wiese

hi attached patch includes MEMSET fixlet from yesterday. it adds err subtracts pthread_* calls from aubio_midi_direct_output(). those did block here. and aren't anyhow needed in aubio_midi_direct_output(), i think. karsten *) here ___________________________________________________________ Telefonate ohne weitere Kosten vom PC zum PC: http://messenger.yahoo.de

18 years, 4 months

[linux-audio-dev] [ANN] aubio 0.3.0

by Paul Brossier

The latest version of aubio, 0.3.0, is now available. aubio is a library for audio labelling. The goal of this project is to provide automatic feature extraction algorithms to other audio software projects. Features include onset detection, beat tracking, and pitch detection. Functions can be used offline in sound editors and software samplers, or online in audio effects and virtual instruments. This release features several changes: * new pitch detection method, yinfft * new beat tracking algorithm (improved from 0.2.0) * new puredata external * enhancements to the onset detection algorithms * improved aubiocut, can now slice at beats and silences * new aubiopitch python program to extract pitch tracks * plotting features for aubiocut and aubiopitch * python interface refactored * updated documentation As usual, the source code can be found at http://aubio.piem.org/ , and Debian packages are available from http://piem.org/debian/ . Feedback most appreciated! Paul Brossier

18 years, 4 months

[linux-audio-dev] compiler problem?

by Gene Heskett

Greetings; Since I can't get any of the common VoIP things to work due to a lack of duplex function in my lappy's chipset, and my inability to convince the person bugtrack assigned to my bugzilla entry that its not my fault, I thought I'd try zfone next. Unforch, the first step, ./configure, fails with 2 stanza's of this: checking linux/byteorder/little_endian.h usability... no checking linux/byteorder/little_endian.h presence... yes configure: WARNING: linux/byteorder/little_endian.h: present but cannot be compiled configure: WARNING: linux/byteorder/little_endian.h: check for missing prerequisite headers? configure: WARNING: linux/byteorder/little_endian.h: see the Autoconf documentation configure: WARNING: linux/byteorder/little_endian.h: section "Present But Cannot Be Compiled" configure: WARNING: linux/byteorder/little_endian.h: proceeding with the preprocessor's result configure: WARNING: linux/byteorder/little_endian.h: in the future, the compiler will take precedence configure: WARNING: ## ------------------------------------------ ## configure: WARNING: ## Report this to the AC_PACKAGE_NAME lists. ## configure: WARNING: ## ------------------------------------------ ## checking for linux/byteorder/little_endian.h... yes checking linux/byteorder/big_endian.h usability... no checking linux/byteorder/big_endian.h presence... yes configure: WARNING: linux/byteorder/big_endian.h: present but cannot be compiled configure: WARNING: linux/byteorder/big_endian.h: check for missing prerequisite headers? configure: WARNING: linux/byteorder/big_endian.h: see the Autoconf documentation configure: WARNING: linux/byteorder/big_endian.h: section "Present But Cannot Be Compiled" configure: WARNING: linux/byteorder/big_endian.h: proceeding with the preprocessor's result configure: WARNING: linux/byteorder/big_endian.h: in the future, the compiler will take precedence configure: WARNING: ## ------------------------------------------ ## configure: WARNING: ## Report this to the AC_PACKAGE_NAME lists. ## configure: WARNING: ## ------------------------------------------ ## checking for linux/byteorder/big_endian.h... yes I've googled in vain for a solution as the make also fails later: gcc -DHAVE_CONFIG_H -I. -I. -I../config -I../include -I../bnlib/ -I../srtp/include -I../srtp/crypto/include -Wno-unused -g -O2 -c -o base32.o `test -f './base32.c' || echo './'`./base32.c In file included from ../srtp/crypto/include/datatypes.h:60, from ../srtp/crypto/include/err.h:49, from ../srtp/crypto/include/rand_source.h:49, from ../srtp/crypto/include/crypto_kernel.h:49, from ../srtp/include/srtp.h:53, from ../include/zrtp_protocol.h:13, from ../include/zrtp_types.h:184, from ./base32.c:7: /usr/include/netinet/in.h:354: error: expected declaration specifiers or ‘...’ before ‘(’ token /usr/include/netinet/in.h:354: error: expected ‘)’ before ‘?’ token /usr/include/netinet/in.h:355: error: expected declaration specifiers or ‘...’ before ‘(’ token /usr/include/netinet/in.h:355: error: expected ‘)’ before ‘?’ token /usr/include/netinet/in.h:357: error: expected declaration specifiers or ‘...’ before ‘(’ token /usr/include/netinet/in.h:357: error: expected ‘)’ before ‘?’ token /usr/include/netinet/in.h:359: error: expected declaration specifiers or ‘...’ before ‘(’ token /usr/include/netinet/in.h:359: error: expected ‘)’ before ‘?’ token ./base32.c: In function ‘b2a’: ./base32.c:59: warning: comparison of distinct pointer types lacks a cast make[1]: *** [base32.o] Error 1 make[1]: Leaving directory `/usr/src/Zfone/libzrtp-0.2.0/src' make: *** [all-recursive] Error 1 This is after outputting dozens of warnings about 'too many arguments for function' Phil Zimmerman's code is usually of quite high quality... -- Cheers, Gene

18 years, 4 months

[linux-audio-dev] stuff I've done

by Bradford Garton

Hey everyone -- Sorry about the multiple postings, but I figured what the heck... I've just put on-line a whole lot of work I've done; papers, pieces, software, etc. Here's the link for the 2-3 people (beyond my immediate family) who might be interested: http://music.columbia.edu/~brad/ There's a fair amount of unix/linux work scattered throughout, including the big "My Music Book" thing I did a few years ago. Hope you enjoy this! brad

18 years, 4 months

[linux-audio-dev] Linux soundapps pages updated

by Dave Phillips

Greetings: It's the Pretty Pictures edition, just in time for the summer fashion season : http://linuxsound.atnet.at (Europe) http://linuxsound.jp (Japan) http://linux-sound.org (USA) Best, dp

18 years, 4 months

[linux-audio-dev] [ANN] Sonic Visualiser: An application for audio visualisation and analysis

by Chris Cannam

Announcing Sonic Visualiser, an application for viewing and analysing the contents of music audio files. http://www.sonicvisualiser.org/ Sonic Visualiser contains advanced waveform and spectrogram viewers, as well as editors for many sorts of audio annotations. Besides visualisation, it can make and play selections based on the locations of automatically detected features, seamlessly loop playback of single or multiple noncontiguous regions, synthesise annotations for playback, and slow down playback while retaining display synchronisation. Sonic Visualiser also introduces the Vamp plugin API, for plugins that extract descriptive or analytical data from audio. Vamp plugins for onset, pitch and note detection using the Aubio library are available, as well as plugins for tempo tracking, chromagram analysis, constant-Q spectrogram, spectral centroid, power curve and tonal change detection. There is also a comprehensive SDK for use by developers of Vamp plugins and hosts. Sonic Visualiser is Free Software distributed under the GNU General Public License. The 0.9 release is available now in source code form or as binaries for Linux, OS/X, and Windows. For more information and downloads, please see http://www.sonicvisualiser.org/ For more information about Vamp plugins, please see http://www.sonicvisualiser.org/vamp.html See also the SourceForge page for this project at http://www.sourceforge.net/projects/sv1/ Sonic Visualiser was developed at the Centre for Digital Music, Queen Mary, University of London and partially funded by the European Commission through the SIMAC project IST-FP6-507142. Chris

18 years, 4 months

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Linux-audio-dev