Method of recognizing speech from a plurality of speaking locations within a vehicle
First Claim
Patent Images
1. A method of recognizing speech from a plurality of speaking locations within a vehicle, the method comprising the steps of:
- receiving a location-specific command from a vehicle occupant;
adjusting at least one of a shape or magnitude of a pick up mode pattern of a microphone in response to the location-specific command; and
switching the pick up mode pattern between cardioid and hypercardioid patterns in response to the location-specific command by using a pair of electrically actuated acoustic valves disposed in two pairs of front and rear sound ports, wherein the valves selectively permit or retard flow of sound waves therethrough to achieve variable directivity of the microphone.
14 Assignments
0 Petitions
Accused Products
Abstract
A speech recognition method includes the steps of receiving a location-specific command from a vehicle occupant, and adjusting either the shape or magnitude of a pick up pattern of at least one microphone in response to the location-specific command. The microphone adjustment can be carried out by electronically or physically steering the pick-up pattern.
-
Citations
12 Claims
-
1. A method of recognizing speech from a plurality of speaking locations within a vehicle, the method comprising the steps of:
-
receiving a location-specific command from a vehicle occupant; adjusting at least one of a shape or magnitude of a pick up mode pattern of a microphone in response to the location-specific command; and switching the pick up mode pattern between cardioid and hypercardioid patterns in response to the location-specific command by using a pair of electrically actuated acoustic valves disposed in two pairs of front and rear sound ports, wherein the valves selectively permit or retard flow of sound waves therethrough to achieve variable directivity of the microphone. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A method of recognizing speech from a plurality of speaking locations within a vehicle, the method comprising the steps of:
-
receiving a location-specific command from a vehicle occupant, wherein the command is a pushbutton activation or a voice command; adjusting at least one of a shape or magnitude of a pick up mode pattern of a microphone in response to the location-specific command by switching the pick up mode pattern between cardioid and hypercardioid patterns using a pair of electrically actuated acoustic valves disposed in two pairs of front and rear sound ports, wherein the valves selectively permit or retard flow of sound waves therethrough to achieve variable directivity of the microphone; and steering the pick up pattern of the microphone in response to the location-specific command. - View Dependent Claims (11)
-
-
12. A method of recognizing speech from a plurality of speaking locations within a vehicle, the method comprising the steps of:
-
receiving a location-specific command from a vehicle occupant, wherein the command is a pushbutton activation or a voice command; and in response to the location-specific command, switching at least one microphone from (a) one type of microphone to another or (b) one microphone mode to another, and steering the pick up pattern of the microphone(s) by electromechanically steering the microphone(s) or electronically steering a plurality of the microphones; wherein switching the microphone mode further comprises switching between cardioid and hypercardioid modes using a pair of electrically actuated acoustic valves disposed in two pairs of front and rear sound ports, wherein the valves selectively permit or retard flow of sound waves therethrough to achieve variable directivity of the microphone.
-
Specification