Title :
Single-ended spatial enhancement using a cross-coupled lattice equalizer
Author :
Maher, Robert C.
Author_Institution :
EuPhonics Inc., Boulder, CO, USA
Abstract :
A stereophonic enhancement system is described which expands the perceived width of the stereo sound image. The system accepts electrical audio signals comprising a two-channel (left and right) stereo pair and produces enhanced left and right stereo signals for use with conventional two-channel audio recording and playback systems. The system includes control circuitry which monitors the dissimilarity of the left and right input signals and optionally the dissimilarity of the left and right processed output signals. An all-pass decorrelation subsystem can also be included for mono-to-stereo conversion of monophonic input signals prior to the spatial enhancement system
Keywords :
acoustic correlation; acoustic field; audio signals; audio systems; equalisers; all-pass decorrelation subsystem; audio playback; audio recording; control circuitry; cross-coupled lattice equalizer; dissimilarity; electrical audio signals; mono-to-stereo conversion; monophonic input signals; perceived width; single-ended spatial enhancement; stereo sound image; stereophonic enhancement system; two-channel stereo pair; Audio recording; Computational modeling; Control systems; Delay; Equalizers; Lattices; Low pass filters; MONOS devices; Multimedia systems; Signal processing;
Conference_Titel :
Applications of Signal Processing to Audio and Acoustics, 1997. 1997 IEEE ASSP Workshop on
Conference_Location :
New Paltz, NY
Print_ISBN :
0-7803-3908-8
DOI :
10.1109/ASPAA.1997.625599
