Selective microphone use for audio conferencing

1. A first device, comprising:

at least one processor; and

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

receive first input from a first microphone;

receive second input from a second microphone, the second microphone being different from the first microphone;

based on one or more identified audio characteristics of the first and second inputs, select the first microphone as an operative microphone to use for generating stereo audio signals from mono audio signals provided by the first microphone but not from mono audio signals provided by the second microphone;

use third input from the second microphone to determine an offset to use for generating the stereo audio signals;

generate, using the offset and the mono audio signals from the first microphone, the stereo audio signals; and

provide the stereo audio signals to a second device as part of an audio conference.

2. The first device of claim 1 , wherein the one or more identified audio characteristics comprise a first volume level associated with the first input and a second volume level associated with the second input, and wherein the first microphone is selected as the operative microphone based on the first volume level being greater than the second volume level.

3. The first device of claim 1 , wherein the one or more identified audio characteristics comprise a first clarity level associated with the first input and a second clarity level associated with the second input, and wherein the first microphone is selected as the operative microphone based on the first clarity level being better than the second clarity level.

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

use the second microphone to generate one or more noise cancellation signals for the audio conference.

5. The first device of claim 4 , wherein the instructions are executable to:

provide the one or more noise cancellation signals to the second device as part of the audio conference.

6. The first device of claim 4 , wherein the instructions are executable to:

generate composite audio signals comprising both the stereo audio signals and the one or more noise cancellation signals; and

provide the composite audio signals to the second device as part of the audio conference.

7. The first device of claim 1 , wherein the audio conference is an audio/video (A/V) conference.

8. The first device of claim 1 , wherein the selection of one of the first and second microphones is performed in a kernel of the first device.

9. The first device of claim 1 , wherein the third input comprises the second input.

10. The first device of claim 1 , wherein the stereo audio signals establish left and right audio channels.

11. A method, comprising:

receiving, at a first device, first input from a first microphone;

receiving, at the first device, second input from a second microphone, the second microphone being different from the first microphone;

based on one or more identified audio characteristics of the first and second inputs, selecting the first microphone as an operative microphone to use for generating stereo audio signals from mono audio signals provided by the first microphone but not from mono audio signals provided by the second microphone;

using third input from the second microphone to determine an offset to use for generating the stereo audio signals;

generating, using the offset and the mono audio signals from the first microphone, the stereo audio signals; and

providing the stereo audio signals to a second device as part of an audio conference.

12. The method of claim 11 , wherein the selecting of the first microphone is performed in a kernel of the first device.

13. At least one computer readable storage medium (CRSM) that is not a transitory signal, the at least one CRSM comprising instructions executable by at least one processor to:

receive first input from a first microphone;

receive second input from a second microphone, the second microphone being different from the first microphone;

based on one or more identified audio characteristics of the first and second inputs, select the first microphone as an operative microphone to use for generating stereo audio signals from mono audio signals provided by the first microphone but not from mono audio signals provided by the second microphone;

use third input from the second microphone to determine an offset to use for generating the stereo audio signals;

generate, using the offset and the mono audio signals from the first microphone, the stereo audio signals; and

provide the stereo audio signals to a client device as part of an audio conference.

14. The at least one CRSM of claim 13 , wherein the third input comprises the second input.

15. The at least one CRSM of claim 13 , wherein the stereo audio signals are synthetic stereo audio signals.

16. The at least one CRSM of claim 13 , wherein the stereo audio signals establish left and right audio channels.

17. The at least one CRSM of claim 13 , wherein the instructions are executable to:

use a timestamp associated with the third input to determine the offset.

18. The at least one CRSM of claim 13 , wherein the selection of the first microphone is performed in a kernel of the first device.

19. The at least one CRSM of claim 13 , wherein the selection of the first microphone is performed by an audio conferencing software application.

20. The at least one CRSM of claim 13 , wherein the selection of the first microphone is performed by a first processor that is different from a central processing unit (CPU) of a second device, the first processor being a processor in a universal serial bus (USB) device inserted into a USB port of the second device, the second device being different from the client device.