Active self-voice naturalization using a bone conduction sensor

An apparatus for audio signal processing at a wearable device, comprising:

• a processor;
• and
• memory in electronic communication with the processor, the memory including instructions executable by the processor to cause the apparatus to:
• receive, at the wearable device comprising a plurality of microphones and a bone conduction sensor, a first input audio signal from an outer microphone and a second input audio signal from an inner microphone;
• receive a bone conduction signal from the bone conduction sensor, the bone conduction signal associated with the first input audio signal and the second input audio signal;
• filter the bone conduction signal based at least in part on a set of frequencies corresponding to the first input audio signal and the second input audio signal;
• calculate one or more power ratios corresponding to the first input audio signal, the second input audio signal, the bone conduction signal, or a combination thereof;
• and
• output, to a speaker of the wearable device, an output audio signal based at least in part on the filtering and a comparison of the one or more power ratios to a threshold.

A non-transitory computer-readable medium storing code for audio signal processing at a wearable device, the code comprising instructions executable by a processor to:

• receive, at the wearable device comprising a plurality of microphones and a bone conduction sensor, a first input audio signal from an outer microphone and a second input audio signal from an inner microphone;
• receive a bone conduction signal from the bone conduction sensor, the bone conduction signal associated with the first input audio signal and the second input audio signal;
• filter the bone conduction signal based at least in part on a set of frequencies corresponding to the first input audio signal and the second input audio signal;
• calculate one or more power ratios corresponding to the first input audio signal, the second input audio signal, the bone conduction signal, or a combination thereof;
• and
• output, to a speaker of the wearable device, an output audio signal based at least in part on the filtering and a comparison of the one or more power ratios to a threshold.