System and method for dynamic optical microphone

A method of receiving a voice signal comprising:

• determining a direction to a human speaker;
• directing a laser beam at a voice box of the human speaker;
• determining a distance to the human speaker using a depth sensor;
• adjusting an intensity of the laser beam based on the distance;
• receiving optical feedback from the laser beam striking the human speaker;
• and
• isolating a voice signal through the optical feedback from the laser microphone
• from background noise in the audio signal.

A robot for receiving a voice signal, comprising:

• an acoustic microphone;
• a laser microphone;
• a depth sensor;
• a camera;
• and
• a processor communicatively coupled to the acoustic microphone, laser microphone, depth sensor, camera, and a memory storing computer executable instructions, wherein the processor:
• determines a direction to a human speaker;
• directs the laser beam at a voice box of the human speaker;
• determines a distance to the human speaker using the depth sensor;
• adjusts an intensity of the laser beam based on the distance;
• receives optical feedback from the laser beam striking the human speaker;
• and
• isolates a voice signal through the optical feedback from the laser microphone from background noise in an audio signal received by the acoustic microphone.