High throughput implementation of a speech coding algorithm

Through thealgorithm′s analysis and the characteristic of real-time speech signal processing, a frame rotation structure have been designed. In addition, the paralleled and pipelined structures are designed for the correlation calculation, the filtering, and the read-write accessing of SRAM processes during the algorithm′s chip development. And, a storage address control logic is designed, therefore, our design′s clock cycle is only 1/68 of the DSP hardware platform operation of each frame′s speech coding. Finally, the PESQ test is completed with a set of pink-noise mixture speeches. The experimental results indicate that the PESQ are all scored above 4.0 when the SNR is not lower than 5 dB. These prove that real-time, highly compressed bit-ratio, high quality speech coding functions are successfully achieved in our design of the chip.