Audio coding

Details Audio coding Audio coding

2007-02-20

2007-02-20

Pendleton, Brian (Department: 2615)

Electrical audio signal processing systems and devices

Binaural and stereophonic

Quadrasonic

C704S500000, C381S017000

Reexamination Certificate

active

10545096

ABSTRACT:
Parametric stereo coders use perceptually relevant parameters of the input signal to describe spatial properties. One of these parameters is the phase difference between the input signals (ITD or IPD). This time difference only determines the relative time difference between the input signals, without any information about how these time differences should be divided over the output signals in the decoder. An additional parameter is included in the encoded signal that describes how the ITD or IPD should be distributed between the output channels. To this goal the delay between a computed monaural signal and one of the input signals is used.

REFERENCES:
patent: 5682461 (1997-10-01), Silzle et al.
patent: 7006636 (2006-02-01), Baumgarte et al.
patent: 2006/0023871 (2006-02-01), Shaffer et al.

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