Techniques to optimize microphone and speaker array based on presence and location

1. An apparatus, comprising:

at least one processor;

an array of plural microphones and an array of plural speakers;

storage accessible to the at least one processor and comprising instructions executable by the at least one processor to:

establish a setting of at least one element in at least one of the arrays based at least in part on at least one signal from at least one proximity sensor; and

one or more of:

(a) input at least one signal from at least a first microphone in the array of microphones to noise cancelation circuitry at least in part responsive to a determination based at least in part on at least one signal from the at least one proximity sensor that the first microphone is not a closest microphone in the array of microphones to a first participant;

(b) deenergize at least a first speaker in the array of speakers at least in part responsive to a determination based at least in part on at least one signal from the at least one proximity sensor that the first speaker is a closest speaker in the array of speakers to an obstruction; and/or

(c) deenergize at least a second microphone in the array of microphones at least in part responsive to a determination based at least in part on at least one signal from the at least one proximity sensor that the second microphone is a closest microphone in the array of microphones to an obstruction.

2. The apparatus of claim 1 , wherein the at least one proximity sensor comprises an infrared (IR) sensor.

3. The apparatus of claim 1 , wherein the at least one proximity sensor comprises a camera.

4. The apparatus of claim 1 , wherein the instructions are executable to:

establish a gain of at least a third microphone in the array of microphones at least in part responsive to a determination based at least in part on at least one signal from the at least one proximity sensor that the third microphone is a closest microphone in the array of microphones to a second participant.

5. The apparatus of claim 1 , wherein the instructions are executable to:

establish a gain of at least a third microphone in the array of microphones at least in part responsive to a determination based at least in part on at least one signal from the at least one proximity sensor that the third microphone is a closest microphone in the array of microphones to a speaking participant.

6. The apparatus of claim 1 , wherein the instructions are executable to:

input at least one signal from at least the first microphone in the array of microphones to noise cancelation circuitry at least in part responsive to the determination based at least in part on at least one signal from the at least one proximity sensor that the first microphone is not a closest microphone in the array of microphones to the first participant.

7. The apparatus of claim 1 , wherein the instructions are executable to:

deenergize at least a third microphone in the array of microphones at least in part responsive to a determination based at least in part on at least one signal from the at least one proximity sensor that the third microphone is not a closest microphone in the array of microphones to second participant.

8. The apparatus of claim 1 , wherein the instructions are executable to:

deenergize at least a second speaker in the array of speakers at least in part responsive to a determination based at least in part on at least one signal from the at least one proximity sensor that the second speaker is not a closest speaker in the array of speakers to a second participant.

9. The apparatus of claim 1 , wherein the instructions are executable to:

establish a gain of at least a second speaker in the array of speakers at least in part responsive to a determination based at least in part on at least one signal from the at least one proximity sensor that the second speaker is a closest speaker in the array of speakers to a second participant.

10. The apparatus of claim 1 , wherein the instructions are executable to:

deenergize at least the first speaker in the array of speakers at least in part responsive to the determination based at least in part on at least one signal from the at least one proximity sensor that the first speaker is a closest speaker in the array of speakers to an obstruction.

11. The apparatus of claim 1 , wherein the instructions are executable to:

deenergize at least the second microphone in the array of microphones at least in part responsive to the determination based at least in part on at least one signal from the at least one proximity sensor that the second microphone is a closest microphone in the array of microphones to an obstruction.

12. The apparatus of claim 1 , wherein the instructions are executable to:

identify, based at least in part on a first signal from the at least one proximity sensor, that a speaking participant is a first distance from the apparatus;

based at least in part on identifying that the speaking participant is the first distance from the apparatus, establish a first gain of at least one microphone in the array of microphones;

identify, based at least in part on a second signal from the at least one proximity sensor, that the speaking participant is a second distance from the apparatus; and

based at least in part on identifying that the speaking participant is the second distance from the apparatus, establish a second gain of at least one microphone in the array of microphones, the first distance being greater than the second distance, the first gain being greater than the second gain.

13. The apparatus of claim 1 , wherein the first microphone and the second microphone are the same microphone.

14. A method, comprising:

receiving one or more signals from at least one proximity sensor on an apparatus, the apparatus comprising an array of microphones; and

one or more of:

(a) inputting at least one signal from at least a first microphone in the array of microphones to noise cancelation circuitry at least in part responsive to determining based at least in part on at least one signal from the at least one proximity sensor that the first microphone is not a closest microphone in the array of microphones to a person; and/or

(b) deenergizing at least a second microphone in the array of microphones at least in part responsive to determining based at least in part on at least one signal from the at least one proximity sensor that the second microphone is a closest microphone in the array of microphones to an obstruction.

15. The method of claim 14 , wherein the first microphone and the second microphone are different microphones.

16. The method of claim 14 , wherein the apparatus comprises an array of speakers, and wherein the method comprises:

deenergizing at least a first speaker in the array of speakers at least in part responsive to determining based at least in part on at least one signal from the at least one proximity sensor that the first speaker is a closest speaker in the array of speakers to an obstruction.

17. A device, comprising:

at least one computer storage that is not a transitory signal and that comprises instructions executable by at least one processor to:

establish a gain of at least a first microphone in an array of microphones at least in part responsive to a determination based at least in part on a first signal from at least one proximity sensor that the first microphone is a closest microphone in the array of microphones to a first participant; and

input at least one signal from at least a second microphone in the array of microphones to noise cancelation circuitry at least in part responsive to a determination based at least in part on a second signal from the at least one proximity sensor that the second microphone is not a closest microphone in the array of microphones to the first participant.

18. The device of claim 17 , wherein the first and second signals from the at least one proximity sensor are the same signal.

19. The device of claim 17 , wherein the instructions are executable to:

deenergize at least a first speaker in an array of speakers at least in part responsive to a determination based at least in part on a third signal from the at least one proximity sensor that the first speaker is a closest speaker in the array of speakers to an obstruction.

20. The device of claim 17 , wherein the instructions are executable to:

deenergize at least a third microphone in the array of microphones at least in part responsive to a determination based at least in part on a third signal from the at least one proximity sensor that the third microphone is a closest microphone in the array of microphones to an obstruction.