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voice_speed_change.rar
- 文章介绍了一种对语音进行变速不变调处理的系统" 该系统与ADPCM编解码技术相结合!能更精确地检测和分割(音元)!并通过音元的复制和抽取实现了对播放语速的控制!达到了变速不变调的目的"。该系统用FPGA实现!结果表明:采用改进后的音元处理算法!可以大大减少语音处理中所引入的噪声;该算法与ADPCM相结合实现的语音变速系统!具有速度快、占用资源少、芯片面积小和成本低等特点"。,This paper presents a voice for transmission to the same tune
fifo
- 异步fifo,用Verilog编写,包含testbench,已经通过modelsim调试,内含文档和波形图-Asynchronous fifo, to prepare to use Verilog, including testbench, debug modelsim has passed, including documents and wave
ADPCM_audio_codec
- ADPCM语音编解码电路设计及FPGA实现。利用FPGA进行ADPCM编码与解码。-ADPCM voice codec circuit design and FPGA realization. FPGA for use ADPCM encoding and decoding.
ADPCM
- APPCM算法和AD/DA芯片驱动在CPLD中的实现,已在实际硬件中测试OK,quartus2环境-APPCM algorithm and AD/DA chip in the drive to achieve in the CPLD has been tested in actual hardware OK, quartus2 environment
fifo
- 同步FIFO 创建一个256x8大小的同步FIFO,并通过串口发送数据初始化FIFO,FPGA内部读取FIFO的数据通过窗口发送到PC-FIFO