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Description: 这是一个对语音信号(0.3kHz~3.4kHz)进行低通滤波的C语言程序， 低通滤波的截止频率为800Hz，滤波器采用19点的有限冲击响应FIR滤波。 语音信号的采样频率为8kHz，每个语音样值按16位整型数存放在insp.dat文件中。-This c program is a low pass filter for radio signal 0.3kHz-3.4kHz.The stop frequence of this
filter is 800hz.This digtal filter chooses 19 points FIR.the fs is 8kHz.every datas is memoryed in filed-insp.dat.
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Size: 1024 |
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Description: Project and source code for ADPCM
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Size: 717824 |
Author: shiva |
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Description: 基于stm32的数字化语音存储与回放系统的软件设计。该系统经过拾音器采集语音信号，经带通滤波与AGC后，进入AD，然后数据存入SRAM，再由DA送至带通滤波，由喇叭将语音信号恢复。该系统可以很好的存储与回放语音信号。，
本源码是在mdk上开发的。 软件设计分两个模块：压缩解压编码与存储模块。压缩编码有PCM编码和ADPCM编码两种可用按键选择；存储是FSMC存储（256k flash）存储。-Stm32 of digital voice storage and playback system-based software design. The system has been collecting voice signal pickup by the bandpass filter and AGC, into the AD, then the data are stored in SRAM, band-pass filter is then sent by the DA, to restore the voice signal from the speaker. The system can be a good storage and playback voice signal. , The source is developed in mdk. The software design is divided into two modules: the compression and decompression coding and storage module. Compression PCM coding and ADPCM encoding the two available buttons store is the the FSMC store (256k flash) storage.
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Size: 1845248 |
Author: summery |
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Description: 基于DSound系统，可以流式播放ADPCM/WAV格式音频文件，可以添加自定义的滤波函数（默认是空函数），文件格式可以带文件头，也可以不带文件头（此时，软件使用配置文件）。-ADPCM/WAV audio file format based on the the DSound system, streaming, you can add custom filter function (the default is the empty function) file format with a header without header (in this case, the software uses the configuration file ).
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Size: 167936 |
Author: 杨赋庚 |
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