Interface for microphone-to-microphone communications

A microphone comprising:

• a housing;
• a transducer disposed in the housing;
• a decimator disposed in the housing, the decimator configured to decimate and combine first pulse density modulation (PDM) data and second PDM data into combined pulse code modulation (PCM) data,
• the first PDM data based on an analog signal from the transducer and the second PDM data received at an interface of the microphone wherein the first PDM data and the second PDM data are clocked by a common clock signal;
• an interpolator disposed in the housing, the interpolator configured to convert the combined PCM data to combined PDM data;
• and
• a processor configured to process the combined PDM data.

A method implemented in a microphone, the method comprising:

• transducing acoustic energy into an analog signal;
• converting the analog signal to first pulse density modulation (PDM) data;
• receiving second PDM data from another microphone via an interface of the microphone, wherein the first PDM data and the second PDM data are synchronized;
• decimating and combining the first PDM data and the second PDM data into combined pulse code modulation (PCM) data;
• converting the combined PCM data to combined PDM data;
• transmitting the combined PDM data to an external processing device.