Responding to HVAC-induced vehicle microphone buffeting
First Claim
Patent Images
1. A vehicle comprising:
- a microphone;
a speaker; and
a buffeting detector to;
in response to an activation event;
generate a first buffeting factor by performing a fast Fourier transform on a signal captured on the microphone to generate a frequency domain signal, and calculating a root-mean-squared value of the frequency domain signal over a frequency range;
generate a second buffeting factor based on a fluctuation strength of the signal; and
in response to the first buffeting factor satisfying a first threshold and the second buffeting factor satisfying a second threshold, electrically couple the speaker to an input of a voice-activated system, wherein the second threshold is an average of a plurality of fluctuation strengths of the signal over a first predetermined period.
1 Assignment
0 Petitions
Accused Products
Abstract
Method and apparatus are disclosed for responding to HVAC-induced vehicle microphone buffeting. An example disclosed vehicle includes a microphone, a speaker, and a buffeting detector. The example microphone is electrically coupled to an input of a voice-activated system. The example speaker is located on a front driver side of the vehicle. The example buffeting detector, when a button is activated, determines a buffeting factor of a signal captured by the microphone. Additionally, the example buffeting detector, in response to the buffeting factor satisfying a threshold, activates a relay to electrically couple the speaker to the input of the voice-activated system.
-
Citations
18 Claims
-
1. A vehicle comprising:
-
a microphone; a speaker; and a buffeting detector to; in response to an activation event; generate a first buffeting factor by performing a fast Fourier transform on a signal captured on the microphone to generate a frequency domain signal, and calculating a root-mean-squared value of the frequency domain signal over a frequency range; generate a second buffeting factor based on a fluctuation strength of the signal; and in response to the first buffeting factor satisfying a first threshold and the second buffeting factor satisfying a second threshold, electrically couple the speaker to an input of a voice-activated system, wherein the second threshold is an average of a plurality of fluctuation strengths of the signal over a first predetermined period. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A method to detect buffeting of a microphone electrically coupled to a voice-activated system of a vehicle, the method comprising:
when a button is activated; generating a first buffeting factor by performing a fast Fourier transform on the signal captured on the microphone to generate a frequency domain signal, and calculating a root-mean-squared value the frequency domain signal between a first frequency of interest and a second frequency of interest; generating a second buffeting factor based on a fluctuation strength of the signal; and in response to the first buffeting factor satisfying a first threshold and the second buffeting factor satisfying a second threshold, activating a relay to electrically couple a speaker in a door handle assembly to the input of the voice-activated system, wherein the second threshold is an average of a plurality of fluctuation strengths of the signal over a first predetermined period. - View Dependent Claims (13, 14, 15, 16, 17, 18)
Specification