Method and device for voice operated control
View Patent ↗At least one exemplary embodiment is directed to a method and device for voice operated control. The method can include measuring a first sound received from a first microphone, measuring a second sound received from a second microphone, detecting a spoken voice based on an analysis of measurements taken at the first and second microphone, mixing the first sound and the second sound to produce a mixed signal, and controlling the production of the mixed signal based on one or more aspects of the spoken voice.
1. An acoustic device, comprising: a first microphone configured to detect a first acoustic signal; a second microphone configured to detect a second acoustic signal; a processor operatively coupled to the first microphone and the second microphone, wherein the processor is configured to perform operations comprising:
detecting a spoken voice based on an analysis of the first acoustic signal captured by the first microphone and the second acoustic signal captured by the second microphone, wherein the analysis of the first acoustic signal and the second acoustic signal is a coherence analysis, a spectral difference, or a combination thereof;
determining, based on the analysis, a voicing level for the spoken voice, wherein the voicing level identifies a degree of intensity and periodicity of sound in the first and second acoustic signals; generating a voice activity flag declaring the presence of the spoken voice to a system after detecting the spoken voice;
and a voice operated control configured to mix the first acoustic signal and the second acoustic signal to produce a mixed signal.
2. The acoustic device of claim 1 , wherein the voice operated control is configured to control production of the mixed signal based on an aspect of the spoken voice.
3. The acoustic device of claim 1 , wherein the voice operated control is configured to increase a first gain of one of the first acoustic signal of an ambient sound and the second acoustic signal of an internal sound, wherein the mixed signal includes a combination of the first acoustic signal and the second acoustic signal with applied weighting towards the ambient sound or the internal sound depending on a background noise level, a vocalization level, the spectral difference, or a combination thereof.
4. The acoustic device of claim 1 , wherein the analysis further comprises a sound pressure level comparison, a correlation, a ratio between the first acoustic signal and the second acoustic signal, or a combination thereof.
5. The acoustic device of claim 1 , further comprising a speaker, wherein the voice operated control mixes an audio content with the mixed signal and delivers the mixed signal to the speaker.
6. The acoustic device of claim 5 , wherein the first microphone is an ambient sound microphone configured to capture ambient sound and the second microphone is an ear canal microphone configured to capture the spoken voice, wherein the spoken voice is of a user.
7. The acoustic device of claim 5 , wherein the voice operated control is configured to mix an ambient sound captured at the first microphone and the spoken voice at the second microphone to produce the mixed signal and control a product of the mixed signal based on an aspect of the audio content and the spoken voice of a user.
8. The acoustic device of claim 7 , wherein the aspect of the spoken voice includes a spectral shape of the spoken voice.
9. The acoustic device of claim 7 , wherein the aspect of the audio content includes a spectral distribution, a duration, a volume of the audio content, or a combination thereof.
10. The acoustic device of claim 5 , wherein the audio content includes a phone call, a voice message, a music signal, a multimedia signal, an auditory warning, or a combination thereof.
11. The acoustic device of claim 1 , further comprising a transceiver operatively coupled to the processor and configured to transmit the mixed signal to cell phone, a media player, a portable computing device, a personal digital assistant, or a combination thereof.
12. The acoustic device of claim 1 , wherein the acoustic device comprises an earpiece and a remote device coupled to the earpiece, the earpiece including the first microphone and the remote device including the second microphone.
13. An acoustic device, comprising:
a first microphone configured to detect a first acoustic signal;
a second microphone configured to detect a second acoustic signal;
a processor operatively coupled to the first microphone and the second microphone, wherein the processor is configured to perform operations comprising:
detecting a spoken voice based on an analysis of the first acoustic signal captured by the first microphone and the second acoustic signal captured by the second microphone, and
wherein the analysis of the first acoustic signal and the second acoustic signal is a coherence analysis, a spectral difference, or a combination thereof;
determining, based on the analysis, a voicing level for the spoken voice, wherein the voicing level identifies a degree of intensity and periodicity of sound in the first and second acoustic signals;
generating a voice activity flag declaring the presence of the spoken voice to a system after detecting the spoken voice; and
a voice operated control configured, by way of the processor, to mix the first acoustic signal and the second acoustic signal to produce a mixed signal.
14. The acoustic device of claim 13 , wherein the voice operated control is configured to analyze a timing of one or more peaks in a cross correlation between an ambient sound detected by the first microphone and an internal sound detected by the second microphone.