Real time acoustic event location and classification system with camera display

• US 7,203,132 B2
• Filed: 04/07/2006
• Issued: 04/10/2007
• Est. Priority Date: 04/07/2005
• Status: Active Grant

• Current Assignee: Safety Dynamics Incorporated
• Original Assignee: Safety Dynamics Incorporated
• Inventors: Berger, Theodore W.
• Primary Examiner(s): Lobo; Ian J.
• Application Number:
  US11/279,079
• Publication Number:
  US 20060256660A1
• Time in Patent Office: 368 Days
• Field of Search: 367/124, 367/127, 367/129, 367/906
• US Class Current: 367/129
• CPC Class Codes: G01S 5/20 Position of source determined by a plurality of spaced direction-finders
• CPC Class Codes: G01S 5/22 Position of source determined by co-ordinating a plurality of position lines defined by path-difference measurements G01S5/28 takes precedence
• CPC Class Codes: G01S 7/003 Transmission of data between radar, sonar or lidar systems and remote stations
• CPC Class Codes: G01S 7/52001 Auxiliary means for detecting or identifying sonar signals or the like, e.g. sonar jamming signals
• CPC Class Codes: G10L 25/30 using neural networks
• CPC Class Codes: G10L 25/51 for comparison or discrimination
• CPC Class Codes: Y10S 367/906 Airborne shock-wave detection

Abstract

An acoustic event location and classification system comprising an array of at least two acoustic transducers arranged spaced from one another; a central data processing unit for receiving signals from the acoustic transducers and processing the signals to determine a event type and location; and an internet or LAN connection for transmitting event type and location data to a third party, wherein the central data processing unit uses a DSNN to determine the event type and generalized cross correlation functions between microphone pairs to determine the event location.

Claims

1. An acoustic event location and classification system comprising,

an array of at least two acoustic transducers arranged spaced from one another;

a central data processing unit for receiving signals from said acoustic transducers and processing said signals to determine a event type and location; and

an internet or LAN connection for transmitting event type and location data to a third party,

wherein said central data processing unit uses a dynamic synapse neural network (DSNN) to determine the event type and generalized cross correlation between pairs of acoustic transducers to determine the event location.

2. The acoustic event location and classification system of claim 1 wherein said transducers are equi-spaced from one another.

3. The acoustic event location and classification system of claim 1 comprising four transducers.

4. The acoustic event location and classification system of claim 1 wherein said transducers are spaced less than about 1.2 feet apart.

5. The acoustic event location and classification system of claim 1 wherein said array is portable.

6. The acoustic event location and classification system of claim 1 wherein said array is worn on a human body.

7. The acoustic event location and classification system of claim 1 wherein said array is worn on a helmet.