Acoustic signal processing with voice activity detector having processor in an idle state
First Claim
Patent Images
1. A device for acoustic signal processing, comprising:
- a sensor configured to detect a vibration signal from a user;
a voice activity detector configured to detect a speech of the user; and
a microphone configured to receive an acoustic signal from the user,wherein the voice activity detector is further configured to detect the speech of the user based on a fusion of a high frequency part of the acoustic signal and a low frequency part of the vibration signal,wherein the at least one processor is in an idle state before the speech of the user is detected, andwherein to detect the speech of the user, the voice activity detector is further configured to;
generate a frequency domain representation of the vibration signal based on the vibration signal;
generate a frequency domain representation of the acoustic signal based on the acoustic signal;
compute a correlation coefficient between the frequency domain representation of the vibration signal and the frequency domain representation of the acoustic signal;
detect the speech of the user based on the correlation coefficient; and
determine that the speech of the user is detected when a detected quantity is greater than a threshold, where the detected quantity is expressed by;
1 Assignment
0 Petitions
Accused Products
Abstract
System and method for acoustic signal processing are disclosed. An exemplary device for acoustic signal processing includes a voice activity detector configured to detect a speech of a user. The device includes a microphone configured to receive acoustic signals from the user. The device further includes at least one processor configured to process the acoustic signals in response to detecting the speech of the user. The at least one processor is in an idle state before the speech of the user is detected.
-
Citations
19 Claims
-
1. A device for acoustic signal processing, comprising:
-
a sensor configured to detect a vibration signal from a user; a voice activity detector configured to detect a speech of the user; and a microphone configured to receive an acoustic signal from the user, wherein the voice activity detector is further configured to detect the speech of the user based on a fusion of a high frequency part of the acoustic signal and a low frequency part of the vibration signal, wherein the at least one processor is in an idle state before the speech of the user is detected, and wherein to detect the speech of the user, the voice activity detector is further configured to; generate a frequency domain representation of the vibration signal based on the vibration signal; generate a frequency domain representation of the acoustic signal based on the acoustic signal; compute a correlation coefficient between the frequency domain representation of the vibration signal and the frequency domain representation of the acoustic signal; detect the speech of the user based on the correlation coefficient; and determine that the speech of the user is detected when a detected quantity is greater than a threshold, where the detected quantity is expressed by; - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A system for acoustic signal processing, comprising:
an acoustic signal processing device, comprising; a sensor configured to detect a vibration signal from a user; a voice activity detector configured to detect a speech of the user; a microphone configured to receive an acoustic signal from the user; at least one processor configured to process the acoustic signal in response to detecting the speech of the user, wherein the at least one processor is in an idle state before the speech of the user is detected, and to detect the speech of the user, the voice activity detector is further configured to; generate a frequency domain representation of the vibration signal based on the vibration signal; generate a frequency domain representation of the acoustic signal based on the acoustic signal; compute a correlation coefficient between the frequency domain representation of the vibration signal and the frequency domain representation of the acoustic signal; detect the speech of the user based on the correlation coefficient; and calculate a detected quantity in a frequency range based on the correlation coefficient, where the detected quantity is expressed by; - View Dependent Claims (10, 11, 12, 13, 14)
-
15. A device for acoustic signal processing, comprising:
-
a sensor configured to detect a vibration signal from a user; a voice activity detector configured to detect a speech of the user; and a microphone configured to receive an acoustic signal from the user, wherein the voice activity detector is further configured to detect the speech of the user based on a fusion of the processed acoustic signal and the processed vibration signal, and wherein the at least one processor is in an idle state before the speech of the user is detected, wherein to detect the speech of the user, the voice activity detector is further configured to; generate a frequency domain representation of the vibration signal based on the vibration signal; generate a frequency domain representation of the acoustic signal based on the acoustic signal; compute a correlation coefficient between the frequency domain representation of the vibration signal and the frequency domain representation of the acoustic signal; detect the speech of the user based on the correlation coefficient; and determine that the speech of the user is detected when a detected quantity is greater than a threshold, where the detected quantity is expressed by; - View Dependent Claims (16, 17, 18, 19)
-
Specification