Perceptual speaker directivity

Details Perceptual speaker directivity Perceptual speaker directivity

2006-04-11

2006-04-11

Nguyen, Duc (Department: 2643)

Electrical audio signal processing systems and devices

Monitoring of sound

C381S123000

Reexamination Certificate

active

07027601

ABSTRACT:
Better reproduction of sound is achieved analyzing audio signals for perceptual soundfield imaging cues, and applying appropriate portions of the audio signal to a directional speaker and to a diffusing speaker, based on the analyzed audio signals. Specifically, the audio signal is applied to a critical band filter bank, and at the higher frequencies a detector detects leading edges in the signal's envelope. Concurrently, the audio signal is applied to a delay element followed by a reconstruction filter bank. The output of each filter in the reconstruction filter bank is applied to a one-input/two-outputs soft switch (single pole, double throw) that is controlled by one or more of the detectors. One output of the switch is applied to a directional speaker, and the other output of the switch is applied to a diffusing speaker.

REFERENCES:
patent: 4118601 (1978-10-01), Yeap
patent: 4454609 (1984-06-01), Kates
patent: 5046101 (1991-09-01), Lovejoy
patent: 5631964 (1997-05-01), Harada et al.
patent: 6285767 (2001-09-01), Klayman
Jont Allen et al, “Micromechanical models of the cochlea” Physics Today, Jul. 1002, pp. 40-47.
Zoran Cvetkovic et al, “Tight Weyl-Heisenberg grames in l2(Z)”, IEEE 1998, pp. 1256-1259.

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