Information processing apparatus, information processing method, and computer program product

This invention describes a system that uses multiple microphones to isolate a specific sound source, such as a person's voice, from other noises in a room. It works by first detecting a keyword in the audio to identify a relevant segment. Then, using that segment and the acoustic information from the microphones, it calculates a special filter to extract only the sound from the desired source.

Why it matters: Filed before widespread advancements in AI-driven speech processing and the availability of powerful, compact digital signal processors. These now make the complex real-time calculations for spatial filtering and keyword detection more practical and efficient.

Status: ExpiredProtection ended and was never renewed
How hard to build: SpecializedSoftware logic, microphone array, signal processing

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