iscore-addon-audio

Audio add-on for i-score

This addon adds audio sequencer features to i-score by leveraging the LibAudioStream.

Backends supported :

• JACK (Linux / OS X)
• PortAudio (Everywhere where it is available)
• CoreAudio (OS X)

Audio effect formats supported :

• Faust
• LV2

Installing

Dependencies

• i-score
• libsndfile
• faust2 (Last known working commit: bffedc954e43475369dec209ccef53e4020af541)
• Unless you're on OS X, either jack or portaudio
• libsamplerate
• librubberband
• lv2 (version >= 1.14.0)

Procedure

You may need to build lv2 yourself to get 1.14.0 (Ubuntu 16.10 provides 1.12.x) :

git clone http://lv2plug.in/git/lv2.git
cd lv2
git checkout v1.14.0
./waf configure
./waf
sudo ./waf install

Clone this repository inside the addons folder of i-score : https://github.com/OSSIA/i-score/tree/master/base/addons

(Re-)run CMake

The addon will be built along i-score.

It adds new processes :

• Sound : a sound file
• Effects : an effect chain
• Send / Return / Mix : audio graph features
• Input : real-time input

Features :

Changing the speed of the time constraints will scale the pitch accordingly, unless this would affect a real-time input. Faust effects can be given by either a path to a DSP file, or the Faust code directly. To ensure that all effects work, the .lib files here should be located where the i-score executable is.