Optical neural network recognizes human speech

A photorefractive timedelay neuralnetwork system promises to streamline the computation tasks required by conventional speechrecognition algorithms. Researchers from the Joint Institute for Laboratory Astrophysics (JILA) at the University of Colorado (Boulder, CO) have constructed a photorefractive system based on holographic delay lines and volume storage media that can discern clusters of timedependent acoustic signals. So far, the system has been trained to recognize three digitized spoken wo

Jerry R. Hobbs

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