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Description: 调用Linux系统的ALSA声音系统API，完成PCM格式的wav文件的录音和播放。-these codes are capable to record sound into wavfile in PCM format and play wavfile in PCM format by callling ALSA API on Linux platform.
Platform: |
Size: 5120 |
Author: 李一一 |
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Description: This project features a full-hardware sound compressor using the well known algorithm: IMA ADPCM.
The core acts as a slave WISHBONE device.
The output is perfectly compatible with any sound player with the IMA ADPCM codec (included by default in every Windows). Includes a testbench that takes an uncompressed PCM 16 bits Mono WAV file and outputs an IMA ADPCM compressed WAV file.
Compression ratio is fixed for IMA-ADPCM, being 4:1.
Platform: |
Size: 23552 |
Author: Joe |
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Description: 实现语音文件格式的的转换，实现pcm和raw转换成wav语音文件格式-Voice file format conversion, PCM and raw conversion into WAV voice file format
Platform: |
Size: 1024 |
Author: liqiang |
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Description: 在PCM编码的前提下，分析wav文件头包含的信息。(analyse wave header.)
Platform: |
Size: 49152 |
Author: colaDog
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Description: 功能如下
使用STM32F103ZE芯片，通过DM9000AEP把互联网上的网络音频流（支持shoutcast、http mp3流）抓取下来，先在板子上外扩的SRAM上缓存。然后在STM32F103ZE上通过mp3软件解码器解码变成PCM音频，通过DMA方式送到PCM1770进行回放；
它也可以流畅播放SD卡上的mp3、wav格式文件。（支持大于4G的SD卡）；
通过3.2寸240*320的TFT触摸屏、五向按键、红外遥控器进行控制；
红外遥控器具备自学习功能；
系统信息显示；
LCD背光、音量可调，触摸灵敏度可随时校准；(Functions are as follows
The use of STM32F103ZE chip, through the DM9000AEP to the Internet network audio stream (Shoutcast, HTTP MP3) to crawl down, the cache in the outer SRAM expansion board. Then, on STM32F103ZE, the MP3 software decoder decodes it into PCM audio and sends it to the PCM1770 for playback via DMA;
It also allows you to play MP3 and WAV files on the SD card smoothly. (support SD card larger than 4G);
Through the 3.2 inch 240*320 TFT touch screen, five button, infrared remote control;
Infrared remote controller has self-learning function;
System information display;
LCD backlight, adjustable volume, touch sensitivity can be adjusted at any time;)
Platform: |
Size: 7386112 |
Author: 华仔华仔
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Description: 将raw（pcm）格式语音转换为wav格式(Converting raw (PCM) format speech to WAV format)
Platform: |
Size: 37888 |
Author: calmdownfor
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