Linux-audio-user November 2015

linux-audio-user@lists.linuxaudio.org

62 participants
68 discussions

[linux-audio-user] Sub-harmonic generator? (LADSPA or VST)

by Tim Howard

Hello, Does anyone know of a good plugin that will generate subharmonics? I would like to put a little more low frequency "oomph" into my bass track. Preferrable LADSPA, but VST would work, too. Thanks for any help! -TimH

8 years, 2 months

NAMA, non-distructive?

by Hart Larry

Thank you MR Hawaii, I forgot I had installed that, but looking in its man-page, makes references to non-distructive editing. If I understand the concept, I would think editing out portions of sound would certainly be destroying an orriginal. Meanwhil, if I run nana -t and a file name, I get the following error: Found config file: /home/chime/.namarc YAML::Tiny found bad indenting in line ' consumer:' at /usr/share/perl5/Audio/Nama/Assign.pm line 283. So please, how do I fix this-and-would NAMA be an interactive editor? Thanks in advance Hart

8 years, 10 months

pianos with built in recorders?

by Karen Lewellen

sorry goofed this the first time. Hi folks, > there is a Yamaha model of which I am thinking, but know it is not the only > one. > Thoughts about the efficiency of using such in Linux? > since many connect via USB for example, does it make transfer of files > easier? > Any disadvantages? > thanks, > Karen > > >

8 years, 11 months

Alternative FluidSynth GUI?

by Dan Capp

Research tells me that QSynth seems to be the only currently available/usable GUI for FluidSynth, but I get big xruns whenever I try and use it. FluidSynth itself doesn't cause me problems (I know because I'm able to use the FluidSynth-DSSI plugin fine in Rosegarden etc). The problem is that I want to use FluidSynth with Ardour3, but Ardour3 doesn't support DSSI plugins yet. So the only solution I have is to find a standalone interface for FluidSynth and then to link up using Jack. I looked at the old GUI 'FluidGUI' but it seems to be so old that it won't properly install on recent versions of Ubuntu. So does anyone know of: 1) A GUI for FluidSynth other than QSynth and FluidGUI?... or 2) An application other than the above 2 which would allow me to load soundfonts? Thanks in advance. - Dan

8 years, 11 months

A tune from me on extreme slow cook.

by Will Godfrey

I don't think I've ever posted this on here. Inspired and conceived in the early 1960s by the sight of a highly detailed model sailing ship made entirely from clear drawn and blown glass. Composed in the 1980s when I first had access to a half-decent keyboard First recorded in the 1990s using an Acorn Archimedes and a Yamaha SY22 Transferred in the 2000s to Rosegarden with SY35, ZynAddSubFX, Hydrogen Re-imaged a couple of years ago with Rosegarden and Yoshimi only Recently added an extra counter melody and a bit of polish http://www.musically.me.uk/music/The_Crystal_Ship.ogg Enjoy :) -- 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.

8 years, 11 months

music written with Linux (musescore)

by Benoît Rouits

Hello dear list, Here is a litle tune written and rendered with musescore for the piano, It is called Novembre (i.e: November in english) and has a simple crescendo progression with a few harmonic changes. Enjoy at : http://brouits.free.fr/music/various/Novembre.ogg have a good and peaceful week-end, - Benoît

8 years, 11 months

Changing default Jack output ports to be an application's ports

by Element Green

Hello Linux Audio Users, I'm working on a program to drive LED lights based on music playback on a Linux system. My application creates Jack input ports for frequency analysis which I'm currently connecting to the Jack monitor ports, this frequency analysis info is then used for controlling some RGB LED lights. The application I'm currently using for music playback is Clementine, which has a Jack sink option. All this works fine. However, the frequency analysis of the input audio incurs unwanted latency, so there is a slight delay between changes in the music and lighting changes. What I want to do is delay the audio playback to match the full system latency to match the lighting updates as close to real time as possible. My current thinking is to route the incoming Jack audio in my application back to the Jack playback ports, with a fixed delay buffer. The problem is getting applications, such as Clementine, to connect to my application's ports instead of the physical output ports. My understanding of Clementine is that it is using gstreamer, and thus the jackaudiosink plugin. This plugin appears to have some properties for changing the default ports it connects to ("connect" and "port-pattern"). Clementine does not seem to offer a way to specify what ports it connects to though. What complicates it more is that the ports are disconnected/recreated for each song. I suppose I could look into modifying the Clementine code to allow for a value for the "port-pattern" property to be specified, but I thought someone on this list might have some better ideas. Some other thoughts I had: Is it possible to modify the default system wide Jack playback ports to be an application? From what I have seen of code that auto connects to the playback ports, is that it looks for the first input port marked as Physical. Is it possible to change the default system wide setting "port-pattern" for jackaudiosink? Is it possible to modify jackaudiosink settings on a per application basis (say with an environment variable or config file) without having to modify the client program's source. Thanks in advance for any help on this and cheers! Element Green

8 years, 11 months

Recorded in Linux: restored from archive: KillVideGill

by jonetsu＠teksavvy.com

Hello, This one dates from 2006. The date is easy to remember since it is in Wikipedia. September 13th 2006. The Dawson College shooting in Montreal. It could have been any other at any other place. That evening I made this and almost uploaded it on the killer's web page which was still active at that time, to share the feelings to anyone touched by this. It is about sadness, expressed against a busy backdrop of events. This is entirely done using Zynaddsubfx synthesizer. The sequences are made of 1 short clip each copy/pasted for the duration of the 1:48 piece. The resonance line and chords were played over. What was done this month was to restore the sequence of clips from an old Ardour session that would not load as it was, by copy/pasting and aligning each clip carefully one after the other. Then Robin Gareus' 4-band EQ was applied to all tracks including master. A touch of reverb was added, as well as echo at one place. The original piece was on-going all the same from the start. This new version has a break near the end that surfaces what would be the expression of sad emptiness before the 'business' restarts. Automation was used on EQ and echo as well as here and there for slight volume control. https://soundcloud.com/nominal6/killvidegill

8 years, 11 months

Hint for people with no HDMI sound.

by james

I have a PC with an AMD APU chip, and I'm trying to send sound to my Audiolab 8200AP processor over HDMI. The system is 'Ubuntu Studio 15.10'. I believe the hardware works - I can boot into Windows 10 and send audio from jriver. With Linux, however: - aplay -L does list the hdmi:Generic device, and pulse is using it - Pulse Audio volume control does detect whether the HDMI cable is plugged in at both ends - speaker_test -c 8 -D pulse loops continuously and thinks its playing - Pulse Audio volume control shows the ALSA plug-in [speaker-test] stream However, the Audiolab is stubbornly said the channel is 'silent' on its display. And then I used 'Settings/Display' to select the 'IAG 6"' and select 'use this display' and to mirror the displays - the computer is actually displaying on an attached VGA monitor. And that made things start to work. Ideally I would only access the system over xrdp - but you can't enable the extra monitor without being on the console. Quite possibly I would not have had the issue if either the display was running through HDMI or the VGA monitor was not plugged in - but it is worth bearing in mind if you are having issues. I guess it would be handy if the display on the volume control could indicate 'plugged in but output is inactive' - or (better still) if the HDMI output were active if either the display or sound system wants to use it, and the display is just an unchanged or black background.

8 years, 12 months

Minor bug-fixes and accessibility improvements of GSequencer 0.6.23

by Joël Krähemann

Hi all Advanced Gtk+ Sequencer release 0.6.23 has defenitily not to be missed. Fixes done so far: * fixed allocation of AgsDial * fixed focus in ags_dial.c * fixed _File mnemonic in menubar * fixed recover of GSequencer project as doing properties * fixed SIGINT while reading XML files including AgsRecallLadspa see ChangeLog for indept view. Further on http://gsequencer.org is an empty project with one drum and two synths connected by a mixer with output panel. So you just have to fill in the gaps. Further the mixer is using LADSPA caps plugins: * drum -> 10 band equaliser * matrix0 -> Mono Phaser * matrix1 -> Noise Gate Would be great to hear from you ... $ wget -c http://gsequencer.org/ags_drum_and_synth.xml $ gsequencer --filename ags_drum_and_synth.xml cheers, Joël

8 years, 12 months

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Linux-audio-user November 2015