Title :
Sweet spot widening for stereophonic sound reproduction
Author :
Ródenas, Josep A. ; Aarts, Ronald M.
Author_Institution :
Digital Signal Process. Group, Philips Res. Lab., Eindhoven, Netherlands
Abstract :
The correction of the degradation of the stereophonic illusion due to off-centre listening is investigated. The main idea here is that the directivity pattern of a loudspeaker array should have a well defined shape such that a good stereo sound reproduction is achieved in a large listening area. Optimal digital filters are designed and applied to individual drivers of linear loudspeaker arrays in order to obtain a directivity pattern of a specific shape. This shape is adapted to the time/intensity trading mechanism of the human auditory system via psychoacoustic experiments within a wide listening area. This application is also referred to as "position independent (PI) stereo"
Keywords :
Hi-Fi equipment; acoustic signal processing; acoustic transducer arrays; array signal processing; audio signal processing; digital filters; filtering theory; loudspeakers; sound reproduction; FIR filter coefficients; directivity pattern; human auditory system; large listening area; linear loudspeaker arrays; listening area; loudspeaker array; off-centre listening; optimal digital filters; position independent stereo; psychoacoustic experiments; stereo sound reproduction; stereophonic illusion degradation correction; stereophonic sound reproduction; sweet spot widening; time/intensity trading mechanism; Degradation; Digital filters; Digital signal processing; Ear; Head; Humans; Loudspeakers; MONOS devices; Shape; TV;
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.2001.969575
