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This invention describes a system for voice communication that uses a microphone hidden inside a piece of fabric, placed between its outer and inner surfaces. The system's processor receives sound from this hidden microphone and is specifically designed to handle situations where both speech and an echo occur at the same time. It uses an adaptive filter that adjusts its operation to effectively separate the desired speech from the echo.
Why it matters: The system's focus on adaptive filtering for echo cancellation and speech processing benefits from significant advancements in AI/ML-driven audio signal processing and noise reduction algorithms since 2019. These developments could make the described 'double talk' problem more effectively managed, improving performance for embedded microphones.
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