Multiple device noise reduction microphone array

1. A computer-implemented method comprising:

storing a first detected data representing sounds detected by a first microphone of a first communications device;

receiving a second detected data via a network from a second communications device representing sounds detected by a second microphone of the second communications device;

receiving a signal specifying a characteristic of the second microphone;

deriving a transfer function based at least on a difference in characteristics between the first and second microphones;

subjecting a one of the first and second detected data representing noise sounds to the transfer function;

subtractively summing the first and second detected data, resulting in processed data; and

transmitting the processed data to a third communications device.

2. The computer-implemented method of claim 1 , the characteristic comprises microphone frequency response.

3. The computer-implemented method of claim 1 , comprising:

signaling the second communications device to synchronize a first clock of the first communications device with a second clock of the second communications device;

timestamping the first detected data with a time maintained by the first clock;

and aligning timestamps of the first and second detected data.

4. The computer-implemented method of claim 1 , comprising:

locating occurrences of an acoustic feature in both the first and second detected data;

determining a difference in time of occurrence of the acoustic feature in the first detected data and in the second detected data; and

aligning the first and second detected data based on the difference in time.

5. The computer-implemented method of claim 1 , comprising:

varying a signal strength of signals transmitted to the second communications device via the network to detect a distance between the first and second microphones; and

altering the transfer function based at least on the distance between the first and second microphones.

6. The computer-implemented method of claim 1 , comprising:

generating a test sound;

receiving a signal from the second communications device via the network indicating a time at which the second microphone detected the test sound;

determining a distance between the first and second microphones based on the time at which the second microphone detected the test sound; and

altering the transfer function based at least on the distance between the first and second microphones.

7. The computer-implemented method of claim 1 , comprising:

determining a distance between the first and second microphones; and

employing the distance between the first and second microphones as a weighting factor in subtractively summing the first and the second detected data.

8. At least one machine-readable storage medium comprising instructions that when executed by a first computing device, causes the first computing device to:

signal a second computing device via a network to synchronize a first clock of the first computing device with a second clock of the second computing device;

convert signals output by a first microphone of the first computing device into a first detected data representing sounds detected by the first microphone;

timestamp the first detected data with a time maintained by the first clock;

receive a second detected data via the network from the second computing device representing sounds detected by a second microphone of the second computing device;

subject a one of the first and second detected data representing noise sounds to a transfer function;

align timestamps of the first and second detected data;

subtractively sum the first and second detected data, resulting in a processed data; and

transmit the processed data to a third computing device.

9. The at least one machine-readable storage medium of claim 8 , the first computing device caused to:

vary a signal strength of signals transmitted to the second computing device via the network to detect a distance between the first and second microphones; and

derive the transfer function based at least on the distance between the first and second microphones.

10. The at least one machine-readable storage medium of claim 8 , the first computing device caused to:

generate a test sound;

receive a signal from the second computing device via the network indicating a time at which the second microphone detected the test sound;

determine a distance between the first and second microphones based on the time at which the second microphone detected the test sound; and

derive the transfer function based at least on the distance between the first and second microphones.

11. The at least one machine-readable storage medium of claim 8 , the first computing device caused to:

receive a signal via the network from the second computing device specifying a characteristic of the second microphone; and

derive the transfer function based at least on a difference in characteristics between the first and second microphones.

12. The at least one machine-readable storage medium of claim 11 , the characteristic comprises microphone frequency response.

13. The at least one machine-readable storage medium of claim 8 , the first computing device caused to:

determine a distance between the first and second microphones; and

employ the distance between the first and second microphones as a weighting factor in subtractively summing the first and the second detected data.

14. The at least one machine-readable storage medium of claim 8 , the first computing device caused to:

determine a distance between the first and second microphones; and

alter the transfer function based on the distance between the first and second microphones.