Acoustic shock prevention

Details Acoustic shock prevention Acoustic shock prevention

2007-09-17

2008-12-16

Tsang, Fan (Department: 2615)

Telephonic communications

Substation or terminal circuitry

Noise suppression

C381S055000

Reexamination Certificate

active

07466818

ABSTRACT:
Acoustic shock is reduced by attenuating an input signal based on tones detected through frequency domain analysis. The spectrum of the input signal is obtained. A relative energy signal includes a plurality of relative energy elements, each representing the relative energy in a corresponding frequency bin of the input signal spectrum. A difference signal includes a plurality of difference elements, each representing a difference between a corresponding frequency bin value and an adjacent frequency bin value. A plurality of detection signals are determined, each detecting the presence of a sound element in the input signal based on at least one of the relative energy signal and the difference signal. The detection signals are combined to produce an attenuation signal for attenuating the input signal.

REFERENCES:
patent: 5550924 (1996-08-01), Helf et al.
patent: 6665381 (2003-12-01), Nassimi
patent: 6738358 (2004-05-01), Bist et al.
patent: 6785382 (2004-08-01), McLaughlin et al.
patent: 6834108 (2004-12-01), Schmidt
patent: 7272233 (2007-09-01), Zuluaga
patent: 2005/0018862 (2005-01-01), Fisher
patent: 2005/0031061 (2005-02-01), Ojard et al.
“Soundshield,” http:q//www.polaris.com.au/soundshield/html.
“Soundshield,” http://www.teleman.com.au/au/headset-soundshield.asp.

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