| 摘要 |
<p>An audio headset may comprise a case, near field microphone and far field microphone. A speaker, processor, memory, battery, charging interface and cradle detection circuit may be mounted to the case. Processor-executable instructions embodied in the memory, may implement a battery charging method. The headset may shut off in response to placing the headset in a charging cradle. The far-field microphone is turned on but not the near-field microphone. The battery may then be charged from the cradle. A headset having near- field and far-field microphones may be used to distinguish between user speech and competing sounds by generating signals from sounds detected by each microphone and comparing strengths of the signals. The signals may be processed as user speech if they are of comparable strength. Otherwise, the near-field signal may be processed as user speech and the far-field signal as competing sounds.</p> |
