Title :
Real-time partitioned convolution for Ambiophonics surround sound
Author :
Torger, Anders ; Farina, Angelo
Author_Institution :
Ind. Eng. Dept, Parma Univ., Italy
Abstract :
Ambiophonics, as one of the most realistic music reproduction methods, requires multi-channel convolution with very long impulse responses for creation of believable reverberation. It is shown how the heavy processing task required for a real-time Ambiophonics system, or similar convolution-intensive system, can be handled by a low-cost personal computer, by means of partitioned convolution. The only theoretical advantage of partitioned convolution is that it provides low input/output delay. However, since the intensive part of it is very easily made optimal for the target platform, which normally is not the case for the standard overlap-and-save algorithm, it often provides the fastest convolution as well
Keywords :
Hi-Fi equipment; acoustic signal processing; convolution; delays; microcomputer applications; music; real-time systems; reverberation; sound reproduction; transient response; ambiophonics surround sound; convolution-intensive system; impulse response; low input/output delay; low-cost personal computer; multi-channel convolution; music reproduction; overlap-and-save algorithm; real-time ambiophonics system; real-time partitioned convolution; reverberation; Convolution; Convolvers; Delay; Hardware; Industrial engineering; Loudspeakers; Partitioning algorithms; Reverberation; Signal processing algorithms; Software algorithms;
Conference_Titel :
Applications of Signal Processing to Audio and Acoustics, 2001 IEEE Workshop on the
Conference_Location :
New Platz, NY
Print_ISBN :
0-7803-7126-7
DOI :
10.1109/ASPAA.2001.969576