An ActionScript 3 port of the SoundTouch audio processing library.
SoundTouch AS3 allows realtime processing of audio in Flash 10. It includes filters that perform time compression/expansion and rate transposition. In tandem, these filters can perform pitch-shifting.
var source:Sound = …; var output:Sound = new Sound(); var soundTouch:SoundTouch = new SoundTouch(); soundTouch.pitchSemitones = -6; var filter:SimpleFilter = new SimpleFilter(sound, soundTouch); output.addEventListener(SampleDataEvent.SAMPLE_DATA, filter.handleSampleData); output.play();
For details on using the SoundTouch, Stretch, or RateTransposer classes, look in SimpleFilter and FilterSupport.
The original C++ library includes several features that have not yet been implemented in ActionScript, including a FIR filter, which can be used to prevent aliasing during rate transposition.
SoundTouch AS3 audio processing library
Copyright © Olli Parviainen 2001-2009
Copyright © Ryan Berdeen 2009
This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA