8. The computer-implemented method of claim 7 , further comprising determining that the first signal comprises the first speech by: obtaining an endpointed signal, wherein the endpointed signal comprises one or more sounds and wherein the endpointed signal corresponds to a portion of the first signal; and using a classifier to determine that the one or more sounds comprise the speech.
9. The computer-implemented method of claim 8 , wherein receiving a first signal comprises: monitoring a signal output by a microphone; and obtaining the first signal, wherein the first signal comprises one or more sounds; wherein the first signal corresponds to a portion of the signal output by the microphone.