Innovative Microphone Array Projects for Sound Processing and Spatial Recognition
Explore cutting-edge projects focused on microphone arrays for capturing spatial information, separating sound sources, enhancing signals in noisy environments, and enabling far-field speech recognition. These projects aim to design wearable and huge microphone arrays, perfect for real-world data collection and audio source separation algorithms. Join the advancement in spatial sound processing for applications like assistive listening, machine audition, and audio augmented reality.
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Microphone Array Projects Ryan M. Corey and Andrew C. Singer
Microphone Arrays Capture spatial information about sound scene Localize and separate multiple sound sources Enhance signals in noisy environments Far-field speech recognition Voice communication Spatial Sound Processing Augmented reality Assistive listening 2 Ryan M. Corey corey1@Illinois.edu
What we want Microphone array designs for real-world data collection Record raw multichannel audio data for later analysis Test new audio source separation algorithms Polished, reliable design we can easily reproduce Competent engineer could assemble in a day or two Firmware, drivers, and documentation Calibration and test data Pick your own application! Assistive listening Machine audition Audio augmented reality 3D audio/video production Entertainment, gaming, music, karaoke 3 Ryan M. Corey corey1@Illinois.edu
Project 1: Wearable Microphone Array Most wearable electronics have only 2-4 mics Large arrays give better spatial resolution Many microphones (~ 8-32) Large total length/area (10 s of cm) Many possible wearable designs Head, neck, shoulders, torso, glasses Should be portable, comfortable, safe Record raw data for later analysis (Optional) Real-time spatial audio processing Add a programmable processor < 10 ms total mic-to-ear latency for real-time listening B. Widrow (Stanford), 2000 U. Washington COSINE , 2009 4 Ryan M. Corey corey1@Illinois.edu
Project 2: Huge Microphone Array New tech makes it easier to build huge microphone arrays (Digital) MEMS microphones Improved embedded processing Need good multichannel data for signal processing research Design modules that can be scaled to dozens/hundreds of mics Need large bandwidth for raw data Need synchronized sampling between modules OK to demonstrate small setup that we can later scale up Portable and reconfigurable Record in different environments Rearrange modules for different array shapes MIT LOUD , 2004 5 Ryan M. Corey corey1@Illinois.edu
Other Ideas Augmented listening headphones Robot/drone microphone array Binaural recording (virtual 3D audio) Audio augmented reality Anything with microphones on it! Put a mic on it Contact Ryan M. Corey 119 Coordinated Science Lab corey1@Illinois.edu 6 Ryan M. Corey corey1@Illinois.edu
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