Linux-audio-user October 2013

linux-audio-user@lists.linuxaudio.org

100 participants
85 discussions

[LAU] TAPESTREA Was: Re: new(ish?) open source source separation editor

by Jeff Sandys

TAPESTREA is a similar sound editor that could do some interesting spectrum editing. It was available from the CCRMA repository for Fedora. I enjoyed using it but haven't been able to compile myself. http://taps.cs.princeton.edu/ ISSE appears to be a child of TAPESTREA, with some more advanced and smarter features but does not seem to include some of the fun, interactive features of its parent. If anyone knows the secret of compiling TAPESTREA for 64-bit Fedora, please let me know. -- Jeff

12 years, 3 months

[LAU] rogue synth updates

by Timo Westkämper

Hi. I'd again like to invite interested users to try out rogue: https://github.com/timowest/rogue rogue is a multi-mode soft synth with * 4 oscillators: VA, FM, Supersaw/square with modulation: PM, RM etc * 2 filters: BiQuad, Moog style, SVF and Comb * 4 envs and 4 lfos * effects: chorus, phaser, delay, reverb ... There are also some basic presets bundled. Br, Timo

12 years, 3 months

[LAU] can audio processing occur without jack or alsa?

by Rusty Perez

Hi folks, I know I have a lot to learn, but I'm curious about something. Must jack or alsa be present and running for "off line" audio processing to take place? Or are they only used for playback and recording? Please excuse what may, to some, come off as such basic lack of understanding. :-) Thanks! Rusty

12 years, 3 months

[LAU] jack error delay of nnn.nnn usecs exceeds estimated spare time of nnn.nn restart

by Rusty Perez

Hi folks, Any thoughts on this error? This began to happen just after I started playing with autotalent ladspa plugin in nama. I don't know if the two are related. I am using only a dual core machine so maybe I don't have enough horsepower? The audio was studdering quite a bit when the machine was rendering the processed audio while playing several other tracks. Thanks! Rusty

12 years, 3 months

[LAU] editor for audiofile header?

by Chris Bungue

Hi, looking for a possibility to view or edit the header of a wav file. any idea? Thanks Chris

12 years, 4 months

[LAU] [ANN] midifilter.lv2 v0.1.3

by Robin Gareus

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi all, I just realized that I have never properly announced midifilter.lv2, so here it goes: midifilter.lv2 are a collection of LV2 plugins to filter MIDI events released in terms of the GPLv2. The source-code can be found at https://github.com/x42/midifilter.lv2 Thanks for Jaromír Mikeš they are available in debian (and derived distributions) in the 'x42-plugins' package. Kudos to Thomas Brand who started documenting them at http://gareus.org/oss/lv2/midifilter - much of the documentation has meanwhile been integrated into the plugins themselves and is displayed by LV2-hosts who support built-in doc. So far it features 23 filters: * Channel Filter -- discard messages per Channel * Channel Map -- map any MIDI-channel to another MIDI-channel * Enforce Scale -- force midi notes on given musical scale * Eventblocker -- notch style message filter. * Keyrange -- discard notes-on/off events outside an give range * Keysplit -- change midi-channel number depending on note (and optionally transpose) * Mapscale -- flexible 12-tone map * Chord -- harmonizer - create chords from a single note in a given musical scale * Delay -- delay MIDI events with optional radomization * Dup -- unisono - duplicate MIDI events from one channel to another * Strum -- arpeggio effect intended to simulate strumming a stringed instrument (e.g. guitar) * Transpose -- chromatic transpose MIDI notes * Legato -- Hold a note until the next note arrives * NoSensing -- strip MIDI Active-Sensing events * NoDup -- MIDI duplicate blocker. Filter out overlapping note on/off and duplicate messages. * NoteToggle -- toggle notes: play a note to turn it on, play it again to turn it off. * nTabDelay -- repeat notes N times (incl tempo-ramps) * Passthru -- no operation (example plugin) * Quantize -- live midi event quantization * Velocity Randomizer -- randomly change velocity of note-on events * Sostenuto -- delay note-off messages, emulate a piano sostenuto pedal * Velocity Range -- filter MIDI note events according to velocity. * Velocity Scale -- modify note velocity by constant factor and offset As usual, any feedback is welcome. enjoy, robin -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQIcBAEBAgAGBQJSZYEAAAoJEKCQvOAs9X8ETc0P/joBT+UiwfA/JKHiAdI+jH6W Rj0u7Hmn3lOAuHs5Tz8BxSzd1goXRCg6PKkImrP+NTAEUUnquxtITq8mPM1mbQ8j p1yxFJr5iThuwFz2Taa34GsbIGi9GAGKyeS7qdaRncfr1lERu1Jl5i8qrWflNccC +xirGbPvX02uOYbajqgBDT1r4UG5CQEuapcXaBiE37CrFZWIVNsgI0RFT+I9jiUG xWGmJL02MHOZvfJgvgiKGFVX3511xMZWm8pyPsnzN10Pwoa291D3U84PICdY/KgC d323h2kAOi40x+731O4UBqiS6+qS0TlGrR55xlMujemMAEkBSjn6gI6GLjabMpq3 /tIZgpAYs1pzFLxCK8E+WXm+nTtJDy6RPVB0+7NMb12tgZpr8bGwEJ6fDKtJDnRY o/9s5vAdCkkK5+o1zsD+TN7FB+anxaklcccV5P9fFADZYRwAoonLXMEhL3Y8WIo9 VQ5RccDYfc31Q4ksbqXPBs0i7A5P7cvoNbYmpvx1BrS0ueU2Nq4U/XPoW+zcvegA f+MK35JgCk4EZMMeeFhPbhnEKcZTVCiUdz+65CRv7UsewAwkMBJMxyZmGMHF3gWp vz6m0qT6xV8NRtzTQ6nrjZrYrBDCRrNBnfVflZy/BJ5w4Z5YaElpy6KPYnJN62at 3nELPQTMtaBgYGaOteKY =+4IS -----END PGP SIGNATURE-----

12 years, 4 months

[LAU] strange build problem

by Will Godfrey

I've set up an old single core athlon with debian 6.0.8-i386 (the final version of squeeze) in order to compile old versions of yoshimi which won't compile on the latest version of debian testing, but I've hit a really odd problem. The programs seem to compile perfectly, with no errors reported, but they won't run. As a cross-check, I tried to compile the latest yoshimi version as well as the latest version of zynaddsubfx. Again no compile errors are reported but running them fails. zynaddsubfx give an error 'illegal instruction', while yoshimi gives 'segfault' Can anyone suggest what might be the problem? -- Will J Godfrey http://www.musically.me.uk Say you have a poem and I have a tune. Exchange them and we can both have a poem, a tune, and a song.

12 years, 4 months

[LAU] CARLA improvement ?

by Fero Kiraly

Hi all & specially falkTX ! What if Host URLs were visibile somewhere on main window of Carla? maybe.. fero

12 years, 4 months

[LAU] standalone pitch correction

by Rusty Perez

Hi listers, I'm working on a project and being constantly reminded that, though I'm not bad, I'm an imperfect vocalist. :( That's just the breaks. Anyway, I'm using Nama with Ecasound which allows me to do my production from the commandline, which is necessary because I am blind and it's my only option right now, but his powerful tool does not, at this point, play nicely with the lv2 plugins like talentedhack which provide pitch correction. Does anyone know of a cli based method of pitchcorrecting an audio file? I mean I want to tell it what key I'm singing in, set some parameters, and have it process a file to fix some of my intonation problems. You might say, why not just sing it again? Honestly, I don't have the patience or the time. Anyway, if anyone has a suggestion, I would much appreciate it. Thanks! Rusty

12 years, 4 months

Re: [LAU] [Ardour-Users] alternate binding for MIDI Learn

by Chuck Martin

On Mon, Oct 21, 2013 at 08:33:18AM -0500, Neil djdualcore-at-gmail.com wrote: > MIDI Learn works correctly on my laptop (Ardour 3.5, Linux Mint 15), but I > have not found a way to emulate middle-click on my laptop's trackpad*. If > I plug in an external mouse it works fine. > > Is it possible to change the binding for MIDI Learn? When I looked at the > list of key bindings I did not find it. Have you tried MouseKeys? There's a description of it at: http://en.wikipedia.org/wiki/Mouse_keys According to that article, Switching to MouseKeys mode and back again is done by pressing NumLock with Shift-Alt, but I found that on my laptop, Shift-ScrollLock works. Since on my laptop, the Scroll Lock key is the NumLock key pressed with a key labelled "Fn", that means I need to press Fn-Shift-NumLock to enable/disable the mode. Also, since I don't have a separate number keypad, I have to use Fn with a section of the keyboard from the 7890 row at the top to M./ at the bottom (the , key is the only one in that range that doesn't have a numeric keypad function). This allows moving the mouse cursor as well as clicking all three buttons with single and double clicks and even click and drag. If you can't figure out what key combination turns this mode on and off, try "xmodmap -pke" to find it. Chuck

12 years, 4 months

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Linux-audio-user October 2013