Method and apparatus for down-mixing of a multi-channel audio signal
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United States of America Patent
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-
Nov 1, 2016
Grant Date -
Aug 27, 2015
app pub date -
Mar 5, 2013
filing date -
Mar 5, 2012
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method for down-mixing of a m-channel audio signal (L, R, C, Ls, Rs, Rss, Lss) into a n-channel audio signal (Ro, Lo, Rso, Lso), where m is an integer for which holds m>n and n is an integer for which holds n≧2, including the step of generating one of the n-channel audio signals of one side (right or left) of a listener (Ro, Lo, Rso, Lso), by a combination of: a first term including a signal component (R, L, Rs, Ls) of the m-channel audio signal of the same side only, and a second term dependent of m, including one or more of further signal components of the m-channel audio signal (C, Ls, Rs, Rss, Lss) of the same side only, multiplied by at least one respective filtering function (H1, H2, H3, H4, H5, H6, H7, H8), said filtering function being dependent on: a frequency characteristic of the transmission path between the position of the loudspeaker of the respective signal component of the further m-channel audio signal, and a position of the right ear or left ear, respectively, of a listener in an m-channel reproduction situation, and a frequency characteristic of the transmission path between the position of a loudspeaker of the said one of the n-channel audio down-mixed signals, (Ro, Lo, Rso, Lso), and a position of the right ear or left ear, respectively, of a listener in an n-channel reproduction situation.
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International Classification(s)
- 2013 Application Filing Year
- G10H Class
- 265 Applications Filed
- 253 Patents Issued To-Date
- 95.48 % Issued To-Date
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- 0 Citation Count
- G10H Class
- 0 % this patent is cited more than
- 9 Age
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