AUDIO DETECTION SYSTEM AND METHODS

• US 20180146304A1
• Filed: 12/29/2017
• Published: 05/24/2018
• Est. Priority Date: 04/13/2015
• Status: Active Grant

• Current Assignee: Dscg Solutions, Inc.
• Original Assignee: Dscg Solutions, Inc.
• Inventors: SEBASTIAN, Richard, BELSLEY, Kendall
• Granted Patent: US 10,582,311 B2
• Time in Patent Office: Days
• CPC Class Codes: G01S 17/58 Velocity or trajectory determination systems; Sense-of-movement determination systems
• CPC Class Codes: G01S 7/4815 using multiple transmitters
• CPC Class Codes: G10L 25/18 the extracted parameters being spectral information of each sub-band
• CPC Class Codes: H04R 23/008 using optical signals for detecting or generating sound
• CPC Class Codes: H04R 2499/13 Acoustic transducers and sound field adaptation in vehicles
• CPC Class Codes: H04R 25/407 Circuits for combining signals of a plurality of transducers
• CPC Class Codes: H04R 27/00 Public address systems circuits for preventing acoustic reaction H04R3/02; circuits for distributing signals to loudspeakers H04R3/12; monitoring or testing arrangements for public address systems H04R29/007; amplifiers H03F
• CPC Class Codes: H04R 3/005 for combining the signals of two or more microphones specially adapted for hearing aids H04R25/407

Abstract

A laser microphone can include a detection system including plurality of laser subsystems. The detection system can be configured to produce emitted electromagnetic radiation based on a frequency pattern and receive reflected electromagnetic radiation reflected from an object. The detection system can be configured to define combined frequency data based on a frequency of the emitted, electromagnetic radiation and a frequency of the reflected electromagnetic radiation. The detection system can be configured to define a set of spectral bins in a frequency domain based on the combined frequency data, modify the combined frequency data based on a datapoint obtained from a subset of the set of spectral bins, and define at least one of a range or a velocity based on the combined frequency data. The laser microphone can include an audio processor configured to define an audio signal based on the at least one of the range or velocity.

Claims

1. A laser microphone, comprising:

a detection system including plurality of laser subsystems, the detection system configured to;

produce emitted electromagnetic radiation based on a frequency pattern,

receive reflected electromagnetic radiation reflected from an object,

define combined frequency data based on a frequency of the emitted, electromagnetic radiation and a frequency of the reflected electromagnetic radiation,

define a set of spectral bins in a frequency domain based on the combined frequency data,

modify the combined frequency data based on a datapoint obtained from a subset of the set of spectral bins, and

defining at least one of a range or a velocity based on the combined frequency data; and

an audio processor configured to define an audio signal based on the at least one of the range or the velocity.