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Flanger Audio Effect [C]
This is an implementation of the flanger effect using my previous entry that is a fractional delay line, as a building block. Basically the flanger effect is achieved by making the delay vary in ti...
posted by Gabriel Rivas on Apr 22 2011
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Phaser audio effect [C]
This phaser implementation was created using cascaded 2nd order variablenotch filters to take advantage of the strong phase shift producednear the center notch frequency. The Q parameter determines th... posted by Gabriel Rivas on Jul 4 2011
Comments (1) |
Fractional Delay Line implementation [C]
This is a working implementation of a fractional delay line in C. It has been tested in the dsPIC audio kit, and in a PC running GNU/Linux operating system using the Open Sound System audio driver, b... posted by Gabriel Rivas on Jan 27 2011
Comments (3) |
Fixed-point Math Library [C]
We provide a set of macros and routines that perform fixed-point arithmetic, including basic arithmetic operators, conversions between fixed-point and floating point types, sines and cosines, exponent... posted by Jordan Rhee on Nov 30 2010
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Tremolo audio effect (amplitude modulation) [C]
This code has the basic functions to perform amplitude modulation or tremolo effect on audio signals according to (LFO signal) m [n]---->[+]------------>[*]---------------> y[n] (tremolo mo... posted by Gabriel Rivas on Nov 29 2011
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Variable 2nd order Notch IIR filter [C]
This is the implementation of a variable notch filter in C language. It is based on a second order analog notch filter converted to Z domain by means of the bilinear transform. The objective of this ... posted by Gabriel Rivas on Jun 21 2011
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Circular Buffer FIR Filter [C, TI C67x]
This FIR filter implements a circular buffer. Your own coefficients in yourfiltercoeffs.h can be created using fdatool in MATLAB. DIP1 down = Unfiltered DIP1 up = Filtered... posted by Ron Elbaz on Apr 1 2011
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Variable 2nd order band pass IIR filter [C]
This piece of code implements a variable band pass filter in C language. It is intended to be used to create an array of coefficients sets in runtime, each set of coefficients is mapped to a center fr... posted by Gabriel Rivas on Jul 3 2011
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Auto Wah audio effect (LFO control) [C]
This auto wah effect uses a variable band pass stage as a building block and a LFO to control it. Find the variable band pass block at: http://www.dsprelated.com/showcode/176.php Xin ... posted by Gabriel Rivas on Sep 24 2011
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Template to develop audio DSP using the (OSS) API + GNU/Linux [C]
This is a template to develop audio DSP applications in GNU/Linux using the OSS (Open Sound System) driver, this can allow us to use any regular PC as DSP processors, I hav tested it on pentium 3 and ... posted by Gabriel Rivas on Feb 6 2011
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