基于FPGA 的dsp模块下建立的语音压缩中的混合滤波器组-FPGA-based dsp established under the voice compression modules in the hybrid filter banks

直接数字频率综合器，采用ROM压缩法，经过FPGA验证和AISC实现-Direct digital frequency synthesizer, using ROM compression method, validation and AISC through FPGA Implementation