Introduction
Sonic Flow is a set of C++ libraries and C wrappers for dataflow-inspired audio signal processing. Sonic Flow consists of a feature-rich synchronous dataflow (SDF) library, a set of elementary signal processing blocks and a set of ready-made example applications. The examples illustrate implementing high-quality digital effects utilizing the SDF dataflow library and the signal processing blocks.
Features
Synchronous dataflow library
- Small-overhead synchronic dataflow (SDF) network execution
- 1-dimensional signals
- Multirate networks (resampling) supported
- Hierarchical network (subnetworks) supported
- Cyclic networks (feedback) supported
Example applications
- 3-band fully parametric equalizer
- chorus/flanger
- dynamic range compressor/expander
- monophonic AM/FM tone synthesizer
- multitap delay line
- wah-wah
Hear the example sounds of these effects!
Signal processing blocks
- Math: adder, divider, multiplier, negation, pow, reciprocal.
- Linear filters: band pass filter, band stop filter, biquad filter, high pass filter, high shelf filter, low pass filter, low shelf filter, peaking filter --- all are 2nd-order IIR's.
- Multirate: downsampler, upsampler.
- Input/output: file input, file output --- requires libsndfile or audiofile.
- Signal generation: impulse generator, noise generator (uniform white noise), sine generator.
- Other: ampdB, attack/release, dBamp, delay line (integer and fractional delay), max/min, multiplexer, quantizer, RMS estimator, sample&hold, variable.
License
The program is released under the GNU General Public License.
Please consult the
Sonic Flow file list
at Sourceforge.net for downloading. Currently the latest version is
numbered 0.1.6, released January 4, 2003. This distribution has been
successfully built on at least a i686-pc-linux-gnu system.
If you wish to access development versions (Subversion
repository), please consult the
development page.
For project information, there's the
Sonic Flow project page at
Sourceforge.net.
Sonic Flow uses the
libsndfile or
audiofile
library for audio file input and output. If you
do not need audio file I/O, you don't need to install either of them.
Code history: view current
NEWS
or
ChangeLog
from the Sourceforge.net Subversion repository.
This signal processing software project was originally
carried out at Tampere University of
Technology for the course 80961 Signal Processing
Project in fall 1998. During the course project, we designed and
implemented the release 0.1.0 of this software. The first release was
made on December 10, 1998.
The project members were Jarno Seppänen and Sami Kananoja.
The project was originally carried out with facilities courtesy of
Audio Research Group of the Signal Processing
Laboratory in Tampere University of Technology.
The design process was influenced by Kodo, the Orb, Plastikman, Porter
Ricks and Vainqueur.
Audio Research Group
http://sonicflow.sourceforge.net/
Download
Requirements
History
Acknowledgements
Signal Processing Laboratory
Last modified: Sat Nov 3 08:38:24 CET 2007
tonigonenstein@users.sourceforge.net