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Description: The Audio File Library provides a uniform programming interface to
standard digital audio file formats.
This library allows the processing of audio data to and from audio
files of many common formats (currently AIFF, AIFF-C, WAVE, NeXT/Sun
.snd/.au, IRCAM, AVR, Amiga IFF/8SVX, and NIST SPHERE). The library
also supports compression (currently G.711 mu-law and A-law and IMA and
MS ADPCM) as well as PCM formats of all flavors (signed and unsigned
integer, single- and double-precision floating point).
-The Audio File Library provides a uniform programming interface to standard digital audio file formats. This library allows the processing of audio data to and from audio files of many common formats (currently AIFF, AIFF-C, WAVE, NeXT/Sun .snd/.au, IRCAM, AVR, Amiga IFF/8SVX, and NIST SPHERE). The library also supports compression (currently G.711 mu-law and A-law and IMA and MS ADPCM) as well as PCM formats of all flavors (signed and unsigned integer, single- and double-precision floating point).
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Size: 525678 |
Author: Jet Lan |
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Description: wav 到其他音频格式的转换..wav->wm speech, wmaudio,lac2,lernout,ima adpcm,pcm,gsm,ccitta ,ccitt u,mpep 3-wav to other audio format conversion .. wav -
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Size: 18326 |
Author: dengyulin |
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Description: 这是一个WAV到IMAADPCM转换的小DEMO，读者能够根据程序中的算法，编写出解码的算法，小程序，抛砖引玉-This is a WAV IMAADPCM conversion to a small DEMO. readers can follow the procedures of the algorithm, to prepare the decoding algorithm, small programs, congregate
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Size: 30720 |
Author: 陈中 |
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Description: The Audio File Library provides a uniform programming interface to
standard digital audio file formats.
This library allows the processing of audio data to and from audio
files of many common formats (currently AIFF, AIFF-C, WAVE, NeXT/Sun
.snd/.au, IRCAM, AVR, Amiga IFF/8SVX, and NIST SPHERE). The library
also supports compression (currently G.711 mu-law and A-law and IMA and
MS ADPCM) as well as PCM formats of all flavors (signed and unsigned
integer, single- and double-precision floating point).
-The Audio File Library provides a uniform programming interface to standard digital audio file formats. This library allows the processing of audio data to and from audio files of many common formats (currently AIFF, AIFF-C, WAVE, NeXT/Sun .snd/.au, IRCAM, AVR, Amiga IFF/8SVX, and NIST SPHERE). The library also supports compression (currently G.711 mu-law and A-law and IMA and MS ADPCM) as well as PCM formats of all flavors (signed and unsigned integer, single- and double-precision floating point).
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Size: 525312 |
Author: Jet Lan |
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Description: 这是基于DSP的语音压缩程序的程序，拿出来和大家一起学习-This is a DSP-based voice compression process procedures, and to show everyone learning together
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Size: 254976 |
Author: 陈磊 |
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Description:
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Size: 18432 |
Author: dengyulin |
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Description:
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Size: 3072 |
Author: 张瑛瑛 |
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Description: 将一定格式的ADPCM编码数据解码成pcm格式数据，并通过声卡播放-Will be a certain format decoder ADPCM encoding data into a pcm format data, and through the sound card to play
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Size: 68608 |
Author: floyd |
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Description: 该程序用于处理音频数据，将从声卡直接采集的pcm格式的数据压缩成adpcm格式进行传输，从而达到节省流量的目的。-The procedure for processing audio data, collected directly from the sound card pcm format of the data compression into a transmission format adpcm to achieve the purpose of saving flows.
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Size: 1245184 |
Author: wuwei |
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Description: ADPCM与PCM的编解码程序，效果不错，压缩率有待提高。感兴趣可以试一下-ADPCM and PCM encoding and decoding procedures, the effect is good, the compression ratio to be improved. Interested can try
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Size: 2048 |
Author: 谢志宏 |
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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: 此代码为将ADPCM数据转换为线性PCM的程序源码源代码，该该程序源码经验证可用，已经用于我实验室的产品中。 可直接使用。
-This code for ADPCM data is converted to linear PCM source of program source code, the program source proven available, has been used in my laboratory products. Can be used directly.
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Size: 3072 |
Author: debates |
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Description: 实现了adpcm到pcm的转换，单通道 8KHz采样-adpcm file convert to pcm file
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Size: 3805184 |
Author: 李康 |
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Description: Low bit-rate speech coders are important in many critical communication systems such as military, police, fire departments, homeland security and other first responders. The need for elimination, reduction of the redundancy or irrelevant information from the analog signals gave birth to an area of speech coding. The main goal of speech coding is to represent speech with the minimum number of bits by maintaining its intelligibility and perceptual quality. In today’s wireless communication system there are many factors to be considered but the most constraint is the bandwidth and power. Accommodating more users within a limited bandwidth is a big challenge in the mobile communication system. Still the manufactures and service providers are in search for the low bit-rate speech coders that deliver toll quality speech. The objective of this paper is to compare the commonly used algorithms in wireless communication systems such as LPC, PCM, ADPCM, CELP and VSELP.
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Size: 169984 |
Author: Ambika |
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Description: 实现adpcm g726编码，有pcm音频源文件，有编码后的g726 wav文件用vlc直接可以播放。对研究g726的朋友应该会有参考价值。-adpcm g726 codec,give out an demo for g726 codec , form pcm file to g726 wav file , you can play it by vlc.
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Size: 1288192 |
Author: allen |
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Description: 子带编码是一种以信号频谱为依据的波形编码方法，首先用一组带通滤波器将输入信号按频谱分开，然后让每路子信号通过各自的自适应PCM编码器（ADPCM）编码，经过分接和解码再复合成原始信号。-In sub-band coding is a waveform signal based on the spectrum coding method using a first set of band pass filters to separate an input signal spectrum, and so that each signal path through the respective adaptive PCM coder (ADPCM) encoding, after tap and then combined into the original decoding signal.
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Size: 5048320 |
Author: zx |
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Description: adpcm编解码源码，pcm数据转换成adpcm-pcm can convert to adpcm
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Size: 14336 |
Author: xiaojun |
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Description: ADPCM算法目前已成为很受用的语音压缩算法之一。给出PCM概念。讨论DPCM,DM,ADM与ADPCM的
压缩算法原理以及算法实现流程框图。通过实验,指出每个算法的特征。实验结果进一步证实ADPCM算法既能够有效的
压缩语音,又能还原出高质量的语音。-ADPCM algorithm has become popular with one voice compression algorithm. PCM given concept. Discussion DPCM, DM, ADM and the ADPCM
Compression algorithm principle and algorithm flow diagram. Through the experiment, characterized in that each algorithm. Experimental results confirm both the ADPCM algorithm can effectively
Compressed voice, but also to restore the quality of the voice.
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Size: 339968 |
Author: jzxas |
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Description: Define the preprocessor symbols to establish the vendor ID and device ID for the MFi PCM ADPCM extensions.
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Size: 5120 |
Author: pbjavd |
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