Title :
A digital realization of audio dynamic range control
Author_Institution :
Studer Professional Audio A.G., Chatou, France
Abstract :
A digital limiter/compressor/expander/noise gate with variable parameters for audio signals is presented. This is a feedforward side-chain system which uses a minimum gain method for selecting the section and generating the control gain and a first-order IIR filter for the attack and release processings. The static and dynamic characteristics are analysed, the function block diagram and the realization techniques are described. The device has been real-time implemented using Motorola DSP56002
Keywords :
IIR filters; audio signal processing; compandors; feedforward; limiters; minimisation; real-time systems; Motorola DSP56002; attack/release processing; audio dynamic range control; audio signals; compressor; control gain; expander; feedforward side-chain system; first-order IIR filter; limiter; minimum gain method; noise gate; real-time implementation; Acoustic noise; Control systems; Distortion; Dynamic range; Gain; IIR filters; Noise level; Process control; Signal processing; Table lookup;
Conference_Titel :
Signal Processing Proceedings, 1998. ICSP '98. 1998 Fourth International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-4325-5
DOI :
10.1109/ICOSP.1998.770888
