Title：A Gamma-pass Filter Bank System for Voice Real-Time Decomposition/Synthesis
Country：China
Patent No.：201610921435.9
Legal Status：Authorized
Inventor：Donmei Li,Youwei Yang,Rui Jia,Runsheng Liu
Assignee：Tsinghua University
Address：Tsinghua University,Haidian District Beijing 100084, China
Filing Date：2016-10-21
Issue Date：2019-11-08
Abstract：
The invention puts forward a Gammatone filter bank chip system supporting voice real-time decomposition/synthesis, and belongs to the field of digital circuit design. The system comprises five parts, namely, an input module, a parameter module, a control module, a calculation module, and an output module. The input module activates the control module after receiving a frame of voice data, adjusts the delay of each channel according to the delay of human ear basilar membranes on different sub-bands, and sends the voice data to the control module. The control module makes the parameter module read the parameters of the corresponding channels and transmit the parameters to the calculation module. The calculation module completes the Gammatone filtering algorithm of each channel, and saves the result to the output module. After the calculation module completes calculation of all the channels of the frame of voice data, the output module allows the stored data to be read externally. With the system, the number of clocks consumed for calculation of channels is reduced, and less power is consumed. A parameter configurable function is realized, and the parameters of the system can be adjusted flexibly according to the need. Voice decomposition and synthesis is realized.
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