·詳細(xì)說明：Goertzel算法是DTMF信號(hào)檢測(cè)的核心，它利用二極點(diǎn)的IIR濾波器計(jì)算離散傅立葉變換值，快速有效的提取輸入信號(hào)的頻譜信息。-Goertzel algorIthm is the DTMF signal examination core, it uses two extremes the IIR filter computations to be separated Fourier t
標(biāo)簽： Goertzel DTMF 算法 信號(hào)檢測(cè)
上傳時(shí)間： 2013-04-24
上傳用戶：moshushi0009
·詳細(xì)說明：C++寫的DTMF算法，內(nèi)含一個(gè)pcm數(shù)據(jù)文件，讀入文件并分析按鍵-c writes the DTMF algorIthm, contains a pcm data file, the read-in document and the analysis pressed key。文件列表: DTMF ....\DTMF.cpp ....\DTMF.
上傳時(shí)間： 2013-04-24
上傳用戶：Miyuki
·詳細(xì)說明：AAC音頻解碼算法程序-AAC audio frequency decoding algorIthm procedure 文件列表: AAC_Codec .........\daac.01.11.12 .........\.............\all.h .........\.............\audio_out.cp
上傳時(shí)間： 2013-05-26
上傳用戶：wangchong
·詳細(xì)說明：本文章說明一個(gè)可以快速識(shí)別和產(chǎn)生DTMF的DSP算法原理！里面詳細(xì)說明了DTMF的原理和算法公式- This article explained may fast distinguish and have the DTMF DSP algorIthm principle! Inside specify DTMF principle and algorIthm formula
上傳時(shí)間： 2013-04-24
上傳用戶：lw852826
·詳細(xì)說明：H.263的壓縮算法，具有比較優(yōu)異性能-H.263 compression algorIthm, has the quite outstanding performance, welcome everybody to download 文件列表: tmn ...\tmn-3.2.0 ...\.........\block_functions.c
上傳時(shí)間： 2013-04-24
上傳用戶：franktu
為了提高傳統(tǒng)溫度控制系統(tǒng)的性能，將PID控制理論與嵌入式系統(tǒng)相結(jié)合，采用瑞薩電子公司的H8S/2166作為核心處理器，AD公司的AD7705以及熱敏電阻溫度傳感器作為溫度檢測(cè)單元，利用4×6小鍵盤、LCD顯示器和S1D13305液晶控制器達(dá)到良好的人機(jī)交互，設(shè)計(jì)出了一個(gè)應(yīng)用于化工領(lǐng)域的嵌入式實(shí)時(shí)溫度控制系統(tǒng)。相比于傳統(tǒng)溫度控制系統(tǒng)，該系統(tǒng)提供了更強(qiáng)的計(jì)算能力和可擴(kuò)展能力，采用增量PID控制算法實(shí)現(xiàn)復(fù)雜控制。通過實(shí)驗(yàn)，該系統(tǒng)能達(dá)到0.1 ℃的溫度控制精度以及小于120 s的溫度穩(wěn)定時(shí)間。 Abstract: In order to improve the performance of conventional temperature control system， combining PID control theory with embedded systems， using the Renesas Electronics Corp. H8S/2166 micro-controller as a core processors， AD7705 and thermistor temperature sensor as a temperature detection unit and 4×6 small keyboard， LCD and S1D13305 LCD controller as a good human-computer interaction， this paper designed an embedded real-time temperature control system which is applied in chemical industry. Compared with conventional temperature control system， this system provides more computing power and extensibility， and adopts PID control algorIthm for complex control. Through the experiment， the system can reach temperature control accuracy of 0.1 ℃ and temperature stabilization time of less than 120 seconds.
標(biāo)簽： 瑞薩電子 微控制器 溫度控制 系統(tǒng)設(shè)計(jì)
上傳時(shí)間： 2014-12-26
上傳用戶：003030
摘要 本研究計(jì)劃之目的，在整合應(yīng)用以ARM為基礎(chǔ)的嵌入式多媒體實(shí)時(shí)操作系統(tǒng)于H.264/MPEG-4多媒體上。由于H.264是一種因應(yīng)實(shí)時(shí)系統(tǒng)(RTOS)所設(shè)計(jì)的可擴(kuò)展性串流傳輸(scalability stream media communication)的編碼技術(shù)。H.264主要架構(gòu)于細(xì)細(xì)粒可擴(kuò)展(Fine Granula Scalability,FGS)的壓縮編碼機(jī)制。細(xì)粒度可擴(kuò)展壓縮編碼技術(shù)是最新MPEG-4串流式傳輸標(biāo)準(zhǔn)，能依頻寛的差異來調(diào)整傳輸?shù)姆绞健＜?xì)粒度擴(kuò)展縮編碼技術(shù)以編入可選擇性的增強(qiáng)層(enhanced layers)于碼中，來提高影像傳輸?shù)馁|(zhì)量。本計(jì)劃主要在于設(shè)計(jì)一種簡(jiǎn)單有效的實(shí)時(shí)階層可擴(kuò)展的影像傳輸系統(tǒng)。在增強(qiáng)層編碼及H.264的基本層(base layer)編碼上使用漸進(jìn)的細(xì)粒度可擴(kuò)展編碼(Progressive Fine Granularity Scalable,PFGS)能直接使用H.264的格式特色來實(shí)現(xiàn)FGS。同時(shí)加入了LB-LLF(Layer-Based Least-Laxity-Fir stscheduling algorIthm)的排程算法，來增 進(jìn)網(wǎng)路傳輸影像的質(zhì)量。由實(shí)驗(yàn)結(jié)果顯示本系統(tǒng)在串流影像質(zhì)量PSNR值上確有較佳的效能。
標(biāo)簽： 芯片系統(tǒng) 架構(gòu) 開發(fā)平臺(tái)
上傳時(shí)間： 2014-12-26
上傳用戶：mpquest
設(shè)計(jì)一種基于ATmega16L單片機(jī)的溫度控制系統(tǒng)，闡述該系統(tǒng)的軟硬件設(shè)計(jì)方案。采用模塊化設(shè)計(jì)方法，利用增量式PID算法使被控對(duì)象的溫度值趨于給定值。實(shí)驗(yàn)結(jié)果表明該系統(tǒng)具有良好的檢測(cè)和控制功能。 Abstract: This paper designs a temperature control system based on ATmega16L，describes the hardware and software de－sign scheme of the system，adopts the modularized design method and utilizes the incremental PID algorIthm to realize the temperature of controlled device incline to the given value.The experiment result indicates that the system has good detec－tion and control function
標(biāo)簽： ATmega 16L 16 單片機(jī)
上傳時(shí)間： 2013-10-09
上傳用戶：stvnash
設(shè)計(jì)一種基于P89V51RD2的功率因數(shù)測(cè)量?jī)x，采用光電隔離器和專用數(shù)碼管驅(qū)動(dòng)器。該測(cè)量?jī)x是以增強(qiáng)型單片機(jī)P89V51RD2為核心，大大簡(jiǎn)化系統(tǒng)硬件設(shè)計(jì)。而軟件部分采用模塊化設(shè)計(jì)思想，采用中值濾波和小數(shù)補(bǔ)償算法，實(shí)現(xiàn)功率因數(shù)的高精度測(cè)量。實(shí)驗(yàn)測(cè)試表明，該功率因數(shù)測(cè)量?jī)x測(cè)量精度高，運(yùn)行穩(wěn)定可靠。 Abstract: A power－factor measurement instrument based on P89V51RD2is designed，which uses optical coupler and specific LED drive chip.The power factor measurement instrument uses P89V51RD2as a core of which greatly simplifies the system design.Furthermore，modularization software is developed in detail.The high precision power－factor measuring system is realized by the center value filter and fractional compensation algorIthm.Experiments manifests that the power－ factor measurement instrument is high precision，steady and reliable.
上傳時(shí)間： 2014-12-27
上傳用戶：CHINA526
針對(duì)盤山路存在的轉(zhuǎn)彎盲區(qū)，即在轉(zhuǎn)彎時(shí)司機(jī)無法得知彎路對(duì)面是否有車輛通過，設(shè)計(jì)一種基于C8051F310的山路轉(zhuǎn)彎預(yù)防警示系統(tǒng)。該系統(tǒng)利用一階濾波算法檢測(cè)山路轉(zhuǎn)彎時(shí)是否有車輛通過。運(yùn)用該算法可增強(qiáng)系統(tǒng)檢測(cè)的實(shí)時(shí)性，提高檢測(cè)機(jī)動(dòng)車輛的靈敏度，同時(shí)大大減少環(huán)境溫度對(duì)檢測(cè)的干擾。試驗(yàn)表明該系統(tǒng)能夠正確指示出在山路轉(zhuǎn)彎時(shí)是否有車輛通過，目前該系統(tǒng)已安裝在盤山路上，可大大減少事故的發(fā)生率。 Abstract: Aiming at passing hilly road，there is a turn blind spot.Motormen usually do not know if the passing of vehicles pass the road.So a system of defending accident on hilly road is designed,which is based on MCU C8051F310.The sys-tem uses the first-order filter algorIthm to detect whether there are passing vehicles.This algorIthm enhances the real-time detection and improves the sensitivity of detection vehicles.Meanwhile,it reduces the detection interference of environmen-tal temperature.The experimental results show that this system can exactly indicate if there are passing vehicles.At present,the system has been successfully applied to hilly road.The system can greatly decrease accident.
上傳時(shí)間： 2013-10-10
上傳用戶：歸海惜雪
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