Audio detection system and methods
First Claim
1. A laser microphone, comprising:
- a detection system including a plurality of laser subsystems, each of the plurality of laser subsystems configured to;
produce emitted electromagnetic radiation of that laser subsystem based on a frequency pattern,receive reflected electromagnetic radiation reflected from an object,define combined frequency data of that laser subsystem based on a frequency of the emitted electromagnetic radiation of that laser subsystem and a frequency of the reflected electromagnetic radiation,define a set of spectral bins in a frequency domain based on the combined frequency data of that laser subsystem,modify the combined frequency data based on a datapoint obtained from a subset of the set of spectral bins, anddefine at least one of a range or a velocity of that laser subsystem based on the combined frequency data of that laser subsystem; and
an audio processor configured to define an audio signal based on the at least one of the range or the velocity of at least one of the plurality of laser subsystems.
1 Assignment
0 Petitions
Accused Products
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.
22 Citations
23 Claims
-
1. A laser microphone, comprising:
-
a detection system including a plurality of laser subsystems, each of the plurality of laser subsystems configured to; produce emitted electromagnetic radiation of that laser subsystem based on a frequency pattern, receive reflected electromagnetic radiation reflected from an object, define combined frequency data of that laser subsystem based on a frequency of the emitted electromagnetic radiation of that laser subsystem and a frequency of the reflected electromagnetic radiation, define a set of spectral bins in a frequency domain based on the combined frequency data of that laser subsystem, 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 of that laser subsystem based on the combined frequency data of that laser subsystem; and an audio processor configured to define an audio signal based on the at least one of the range or the velocity of at least one of the plurality of laser subsystems. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. An audio system, comprising:
-
a detection system including; a plurality of lasers, each laser configured to produce respective emitted electromagnetic radiation based on a frequency pattern, a receiver configured to receive reflected electromagnetic radiation reflected from an object, and an analyzer configured to define combined frequency data based on a frequency of the emitted electromagnetic radiation produced by a laser and a frequency of the reflected electromagnetic radiation, the analyzer configured to iteratively perform spectral analysis on the combined frequency data until a beat frequency is determined based on a threshold condition; and an audio processor configured to define an audio signal based on the beat frequency. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
-
-
21. A method, comprising:
-
defining, by processing circuitry configured to define audio signals, combined frequency data based on a frequency pattern of electromagnetic radiation emitted by a plurality of laser subsystems toward an object and a frequency of electromagnetic radiation reflected from the object; defining, by the processing circuitry, a set of spectral bins based on the combined frequency data; identifying, by the processing circuitry, a subset of the set of spectral bins; producing, by the processing circuitry, time series data based on the subset of the set of spectral bins defining, by the processing circuitry, phase angle data based on the time series data; modifying, by the processing circuitry, the combined frequency data based on the phase angle data; and defining, by the processing circuitry, an audio signal based on the combined frequency data. - View Dependent Claims (22, 23)
-
Specification