Efficient Phantom Source Widening

We present a highly efficient filter structure to create power-complementary filter pairs for phantom source widening. It either introduces frequency-dependent phase or amplitude differences in a pair of loudspeaker signals. We evaluate how the perceptual effect is influenced by off-center listening...

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Veröffentlicht in:Archives of acoustics Jg. 38; H. 1; S. 27 - 37
Hauptverfasser: Zotter, Franz, Frank, Matthias
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Warsaw Versita 01.03.2013
Polish Academy of Sciences
Institute of Fundamental Technological Research Polish Academy of Sciences
Schlagworte:
Acoustics
Amplitudes
Archives
Coefficients
Correlation analysis
decorrelation
IACC
Loudspeakers
phantom source
source widening
Widening
ISSN:0137-5075, 2300-262X
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Abstract We present a highly efficient filter structure to create power-complementary filter pairs for phantom source widening. It either introduces frequency-dependent phase or amplitude differences in a pair of loudspeaker signals. We evaluate how the perceptual effect is influenced by off-center listening positions in a standard ±30° loudspeaker setup. The evaluation of the phantom source widening effect is based on measurements of the inter-aural cross-correlation coefficient (IACC), which is justified by its pronounced correlation to the perceived phantom source width in prior listening test results.
AbstractList We present a highly efficient filter structure to create power-complementary filter pairs for phantom source widening. It either introduces frequency-dependent phase or amplitude differences in a pair of loudspeaker signals. We evaluate how the perceptual effect is influenced by off-center listening positions in a standard ±30° loudspeaker setup. The evaluation of the phantom source widening effect is based on measurements of the inter-aural cross-correlation coefficient (IACC), which is justified by its pronounced correlation to the perceived phantom source width in prior listening test results.
We present a highly efficient filter structure to create power-complementary filter pairs for phantom source widening. It either introduces frequency-dependent phase or amplitude differences in a pair of loudspeaker signals. We evaluate how the perceptual effect is influenced by off-center listening positions in a standard 30 loudspeaker setup. The evaluation of the phantom source widening effect is based on measurements of the inter-aural cross-correlation coefficient (IACC), which is justified by its pronounced correlation to the perceived phantom source width in prior listening test results.
We present a highly efficient filter structure to create power-complementary filter pairs for phantom source widening. It either introduces frequency-dependent phase or amplitude differences in a pair of loudspeaker signals. We evaluate how the perceptual effect is influenced by off-center listening positions in a standard plus or minus 30 degree loudspeaker setup. The evaluation of the phantom source widening effect is based on measurements of the inter-aural cross-correlation coefficient (IACC), which is justified by its pronounced correlation to the perceived phantom source width in prior listening test results.
Author Zotter, Franz
Frank, Matthias
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SubjectTerms Acoustics
Amplitudes
Archives
Coefficients
Correlation analysis
decorrelation
IACC
Loudspeakers
phantom source
source widening
Widening
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