基于UClinux系统下，codec:silicon3215 3210 驱动源码！
标签： UClinux
上传时间： 2014-01-18
上传用户：bruce
3rd Generation Partnership Project Technical Specification Group Services and System Aspects ANSI-C code for the Fixed-point Extended AMR - Wideband (AMR-WB+) codec (Release 7)
标签： Specification Partnership Generation Technical
上传时间： 2017-02-23
上传用户：wyc199288
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. PLEASE NOTICE THAT THIS CORE IS LICENSED UNDER http://creativecommons.org/licenses/by-nc-sa/3.0/ (Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported). That means you may use it only for NON-COMMERCIAL purposes.
标签： full-hardware compressor algorithm features
上传时间： 2014-01-14
上传用户：Shaikh
The OpenMAX DL (Development Layer) APIs contain a comprehensive set of audio, video, signal processing function primitives which can be implemented and optimized on various CPUs and hardware engines and then used for accelerated codec functionality. API functions target key algorithms in such codecs as H.264, MPEG-4, AAC, MP3, and JPEG.
标签： comprehensive Development processi OpenMAX
上传时间： 2017-09-20
上传用户：dancnc
Carrier Board for Gumstix Verdex Pro. Has 2 - 30A motor drivers for robotic loco motion PIC micro handles motion control. USB host signals. USB console connector AC97 audio codec Exapnsion headers for PIC micro.
标签： for Carrier Gumstix drivers
上传时间： 2014-05-29
上传用户：Yukiseop
项目中用来处理常用的编码方法的工具类包
上传时间： 2015-05-06
上传用户：chh25000
The 4.0 kbit/s speech codec described in this paper is based on a Frequency Domain Interpolative (FDI) coding technique, which belongs to the class of prototype waveform Interpolation (PWI) coding techniques. The codec also has an integrated voice activity detector (VAD) and a noise reduction capability. The input signal is subjected to LPC analysis and the prediction residual is separated into a slowly evolving waveform (SEW) and a rapidly evolving waveform (REW) components. The SEW magnitude component is quantized using a hierarchical predictive vector quantization approach. The REW magnitude is quantized using a gain and a sub-band based shape. SEW and REW phases are derived at the decoder using a phase model, based on a transmitted measure of voice periodicity. The spectral (LSP) parameters are quantized using a combination of scalar and vector quantizers. The 4.0 kbits/s coder has an algorithmic delay of 60 ms and an estimated floating point complexity of 21.5 MIPS. The performance of this coder has been evaluated using in-house MOS tests under various conditions such as background noise. channel errors, self-tandem. and DTX mode of operation, and has been shown to be statistically equivalent to ITU-T (3.729 8 kbps codec across all conditions tested.
标签： frequency-domain interpolation performance Design kbit_s speech coder based and of
上传时间： 2018-04-08
上传用户：kilohorse
该文件包括了华为P8手机所有的电路图设计，其中主基板部分包括了片上电源模块和电源管理模块，SOC各个外设接口部分，eMMC和DDR3，LCD，USB，Camera，codec，Audio/Speaker,SIM Card,FPC 接口以及headphone等等，而调制解调器部分则包括了RF 接口，RF Transceiver，RF ANT Tunner,BW/WLAN/FM/NFC,GPS,RF PA等等部分，各个子电路图非常详尽，具有极高的参考价值
上传时间： 2022-04-16
上传用户：kid1423
ATS2819/ATS2819P标准应用方案主要分为以下功能模块：Power Supply，BlueTooth，Audio Input/Output（包括codec、I2C、SPDIF），FM Receiver，disaplay（LED&LCD），USB，SPI NOR Flash Memory，SD/MMC/MS Card等。1.2原理图设计总体原则1原理图设计需要按照方案规格的要求实现各项硬件功能，尽量避免功能模块相互间的资源冲突。如果存在I/O复用，接收复用等情况，除了需注意检查I/O上电状态，接口时序等，还需要注意复用的SIO工作频率与工作电压域是否符合要求(如WIO)，确保功能设计正确实现。2原理图设计要求性能达到要求。如稳定性，启动电压，功耗，ESD，EMI等。要注意检查模块电源开关状态，选择的原件标称及精度、材质，接口保护元件和EMI滤波器等。3系统时钟26MHZ，要求CL为7~9PF，精度为+-10PPM。这样才能保证系统能正常工作。4当设计PCB受限于模具大小时，各个模块无法保证均能得到最优的布局布线(如滤波电容要求靠近IC、走线上要求尽量少的过孔与尽可能短的走线)。因为在此给出一个模块优先级以供设计人员参考，从而提高方案设计的效率，增加一版work的可行性。将优先级以阿拉伯数据排列
上传时间： 2022-06-07
上传用户：蓝天小雨
This documentation is the original work and copyrighted property of X-Powers. Reproduction in whole orin part must obtain the written approval of X-Powers and give clear acknowledgement to the copyrightowner.
标签： AC101
上传时间： 2022-06-28
上传用户：xsr1983
