基于UClinux系統(tǒng)下，codec:silicon3215 3210 驅(qū)動(dòng)源碼！
標(biāo)簽： UClinux
上傳時(shí)間： 2014-01-18
上傳用戶：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)
標(biāo)簽： Specification Partnership Generation Technical
上傳時(shí)間： 2017-02-24
上傳用戶：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.
標(biāo)簽： full-hardware compressor algorithm features
上傳時(shí)間： 2014-01-14
上傳用戶：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.
標(biāo)簽： comprehensive Development processi OpenMAX
上傳時(shí)間： 2017-09-20
上傳用戶：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.
標(biāo)簽： for Carrier Gumstix drivers
上傳時(shí)間： 2014-05-29
上傳用戶：Yukiseop
項(xiàng)目中用來(lái)處理常用的編碼方法的工具類包
標(biāo)簽： commons-codec-1.10-bin
上傳時(shí)間： 2015-05-06
上傳用戶：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.
標(biāo)簽： frequency-domain interpolation performance Design kbit_s speech coder based and of
上傳時(shí)間： 2018-04-08
上傳用戶：kilohorse
該文件包括了華為P8手機(jī)所有的電路圖設(shè)計(jì)，其中主基板部分包括了片上電源模塊和電源管理模塊，SOC各個(gè)外設(shè)接口部分，eMMC和DDR3，LCD，USB，Camera，codec，Audio/Speaker,SIM Card,FPC 接口以及headphone等等，而調(diào)制解調(diào)器部分則包括了RF 接口，RF Transceiver，RF ANT Tunner,BW/WLAN/FM/NFC,GPS,RF PA等等部分，各個(gè)子電路圖非常詳盡，具有極高的參考價(jià)值
標(biāo)簽： 華為 p8手機(jī)主板
上傳時(shí)間： 2022-04-17
上傳用戶：
ATS2819/ATS2819P標(biāo)準(zhǔn)應(yīng)用方案主要分為以下功能模塊：Power Supply，BlueTooth，Audio Input/Output（包括codec、I2C、SPDIF），F(xiàn)M Receiver，disaplay（LED&LCD），USB，SPI NOR Flash Memory，SD/MMC/MS Card等。1.2原理圖設(shè)計(jì)總體原則1原理圖設(shè)計(jì)需要按照方案規(guī)格的要求實(shí)現(xiàn)各項(xiàng)硬件功能，盡量避免功能模塊相互間的資源沖突。如果存在I/O復(fù)用，接收復(fù)用等情況，除了需注意檢查I/O上電狀態(tài)，接口時(shí)序等，還需要注意復(fù)用的SIO工作頻率與工作電壓域是否符合要求(如WIO)，確保功能設(shè)計(jì)正確實(shí)現(xiàn)。2原理圖設(shè)計(jì)要求性能達(dá)到要求。如穩(wěn)定性，啟動(dòng)電壓，功耗，ESD，EMI等。要注意檢查模塊電源開(kāi)關(guān)狀態(tài)，選擇的原件標(biāo)稱及精度、材質(zhì)，接口保護(hù)元件和EMI濾波器等。3系統(tǒng)時(shí)鐘26MHZ，要求CL為7~9PF，精度為+-10PPM。這樣才能保證系統(tǒng)能正常工作。4當(dāng)設(shè)計(jì)PCB受限于模具大小時(shí)，各個(gè)模塊無(wú)法保證均能得到最優(yōu)的布局布線(如濾波電容要求靠近IC、走線上要求盡量少的過(guò)孔與盡可能短的走線)。因?yàn)樵诖私o出一個(gè)模塊優(yōu)先級(jí)以供設(shè)計(jì)人員參考，從而提高方案設(shè)計(jì)的效率，增加一版work的可行性。將優(yōu)先級(jí)以阿拉伯?dāng)?shù)據(jù)排列
標(biāo)簽： ats2819 tws 藍(lán)牙音箱
上傳時(shí)間： 2022-06-07
上傳用戶：
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.
標(biāo)簽： AC101
上傳時(shí)間： 2022-06-28
上傳用戶：xsr1983
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