Method and system for acoustic shock detection and...

Details Method and system for acoustic shock detection and... Method and system for acoustic shock detection and...

2011-07-19

2011-07-19

Mei, Xu (Department: 2614)

Electrical audio signal processing systems and devices

Monitoring of sound

Reexamination Certificate

active

07983425

ABSTRACT:
The present invention provides a method for detecting acoustic shock in an audio input signal (s(t)), comprising the steps of monitoring the input signal (s(t)) in the time-domain. Thereby detecting the signal floor (Sn), detecting the peak level of the input signal (L), detecting the attack time of the input signal (t1-t0), detecting the duration of the input signal (T). Based on those detections, determining a shock contrast level (SCL) as difference between the peak level (L) and the signal floor (Sn), determining a shock index (SI) by use of a shock index normalization constant (σ) and comparing the shock contrast level (SCL) and the shock index (SI) with respective thresholds and indicating an acoustic shock if one or both thresholds are exceeded. Thus, the present method provides a quick and reliable shock detector that operates in the time-domain. The shock detection takes place with zero time delay, or even predicts the shock before it fully goes through the signal processing.

REFERENCES:
patent: 5579404 (1996-11-01), Fielder et al.
patent: 7567845 (2009-07-01), Avendano et al.
patent: 2005/0018862 (2005-01-01), Fisher
patent: 2006/0147049 (2006-07-01), Bayley et al.
patent: 10 2004 041199 (2006-03-01), None
patent: 1 471 767 (2004-10-01), None
patent: 03 003790 (2003-01-01), None
International Search Report dated Jan. 31, 2007 for corresponding application PCT/EP2006/063136.

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