MOBILE SPEECH RECOGNITION HARDWARE ACCELERATOR

摘要

A method for executing a mobile speech recognition software application based on a multi-layer neural network model includes providing to a hardware accelerator in the mobile device to classify one or more frames of an audio signal. The hardware accelerator includes a multiplier-accumulator (MAC) unit to perform matrix multiplication operations involved in computing the neural network output.

主权项

1. A mobile computing device, comprising:
a processor configured to execute a speech recognition application that uses a multi-layered neural network as an acoustic model; and a hardware accelerator comprising:
circuitry configured to receive matrix data representing one or more frames of an audio signal as input data for a first layer of the neural network; a multiplier-accumulator (MAC) unit configured to:
multiply the received matrix data representing one or more frames of the audio signal with a weight matrix;add a bias matrix to the multiplication results; andaccumulate the addition results; circuitry configured to pass the accumulated results through an activation function to generate an output matrix representing an output of the first layer of the neural network for the frame; and a data transceiver configured to receive and decode weights and bias terms data, the data transceiver including:
a decompression unit configured to:
decompress compressed weight and bias terms data, anddouble buffer decompressed weights and bias terms data to allow for parallel decompression and MAC unit operations.