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Description: 滤波的源代码，希望对大家有所帮助。很经典的，，，，，，，已经调试成功-Filtering source code, we hope to help. ,,,,,,, Classic has been the success of debugging. .
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Size: 1907712 |
Author: 张玉松 |
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Description: 其片内设有时钟振荡器、128K字节EZPROM(电可编程可擦除只读存贮器)、低噪前置放大器、自动增益控制电路、反混叠滤波器、平滑滤波器、模拟转发器、差动功率放大器等高品质语音录放系统所需的全部基本功能电路。-There are chip clock oscillator, 128K bytes EZPROM (electrical erasable programmable read-only memory), low-noise pre-amplifier, AGC circuit, anti-aliasing filter, smoothing filter, analog transponders, differential power amplifier system such as the quality of voice recording and all the basic functions of the circuit.
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Size: 69632 |
Author: 13 |
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Description:
ZY1420A是广州致远电子有限公司出品的优质微型语音录放模块。ZY1420A内部使用ISD1420作为主
控芯片，且具备ISD1420的全部优良性能，如大容量的EEROM存储器，消噪的话筒放大器，自动增益调节
AGC 电路，专用语音滤波电路，高稳定性的时钟震荡电路和语音处理电路。除此以外，ZY1420A还对
ISD1420的标准外围电路作了优化并全部集成于模块内部。同用户使用标准ISD1420的DIP40封装IC相比较，
ZY1420A可以提供更加稳定可靠的性能，更低的价格，更方便的使用，同时还可以减小实际的体积。 -ZY1420A Guangzhou Zhiyuan Electronics Co., Ltd. Chupin high quality voice playback module miniature. ZY1420A internal use ISD1420 as the main
Control chip, and with all the excellent performance ISD1420, such as large-capacity EEROM memory, de-noising of the microphone amplifier, automatic gain adjustment
AGC circuit, dedicated voice filter circuit, high stability clock oscillator and voice processing circuitry. In addition, ZY1420A also
ISD1420 standard peripheral circuits were optimized and they are all integrated inside the module. ISD1420 with users of the DIP40 package, using standard IC compared with
ZY1420A can provide more stable and reliable performance, lower prices, more convenient to use, but also can reduce the actual size.
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Size: 210944 |
Author: 王二 |
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Description: 本设计是一个数字调频收音机，调频就是频率调制，所谓频率调制就是原来等幅恒频的高频信号的频率，随着调制信号（音频信号）的幅度变化而变化，调频收音机（FM Radio）就是接收这些频率调制的无线电信号，经过解调还原成原信号的电子设备。FM Radio电路一般主要由接收天线、振荡器、混频器、AGC（自动增益控制）、中频放大器、中频限幅器、中频滤波器、鉴频器、低频静噪电路、搜索调谐电路、信号检测电路及频率锁定环路、音频输出电路等组成。本设计就是用单片机控制集成了上述所有FM功能的专用芯片，设计一个数字FM收音机系统。
-This design is a digital FM radio, FM is frequency modulation, frequency modulation is the original so-called constant frequency amplitude high-frequency signal frequency, with the modulation signal (audio signal) the magnitude of change, FM Radio (FM Radio) is frequency modulation radio receiving these signals, the demodulated signal to restore to the original electronic equipment. FM Radio is generally mainly by the receiving antenna circuit, oscillators, mixers, AGC (automatic gain control), IF amplifier, IF limiter, IF filter, frequency discriminator, frequency squelch circuit, search tuning circuit, signal detection and frequency locked loop circuit, the audio output circuit. This design is integrated with MCU control all of the above FM function ASIC design of a digital FM radio system.
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Size: 441344 |
Author: 周涛 |
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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: 4. 数字信道化抗干扰反正，首先数字信道化多相滤波，差值的倍数为信道数的两倍，再采用AGC技术抗干扰。-4 digital channel anti-jamming anyway, the first digital channel of the polyphase filter, the difference in multiples of twice the number of channels, and then using the AGC technology anti-jamming.
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Size: 21504 |
Author: 赖平 |
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Description: The MST717 is a highquality ASIC for NTSC / P AL car TV application. It receives analog NTSC / P AL CVBS and
S-V ideo inputs from TV tuners, DVD or VCR sources, including weak and distorted signals, as well as analog RGB
input from GPS systems. Automatic gain control (AGC) and 8-bit 3-channel A/D converters provide high
resolution video quantization. With automatic video source and mode detection, users can easily switch and adjust
variety of signal sources. Multiple internal adaptive PLLs precisely extract pixel clock from video source and
perform sharp color demodulation. Built-in line-buffer supports adaptive 2-D comb-filter , 2-D sharpening, and
synchronization stabler in a condense manner . The output format of MST717 supports 6-bit digital TFT -LCD
modules. -The MST717 is a highquality ASIC for NTSC/P AL car TV application. It receives analog NTSC/P AL CVBS and
S-V ideo inputs from TV tuners, DVD or VCR sources, including weak and distorted signals, as well as analog RGB
input from GPS systems. Automatic gain control (AGC) and 8-bit 3-channel A/D converters provide high
resolution video quantization. With automatic video source and mode detection, users can easily switch and adjust
variety of signal sources. Multiple internal adaptive PLLs precisely extract pixel clock from video source and
perform sharp color demodulation. Built-in line-buffer supports adaptive 2-D comb-filter , 2-D sharpening, and
synchronization stabler in a condense manner . The output format of MST717 supports 6-bit digital TFT-LCD
modules.
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Size: 1673216 |
Author: kevap |
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Description: The MST717A is a high quality ASIC for NTSC/PAL/SECAM car TV application. It receives analog
NTSC/PAL/SECAM CVBS and S-Video inputs TV tuners, DVD or VCR sources, including weak and distorted
signals, as well as analog RGB input GPS systems. Automatic gain control (AGC) and 8-bit 3-channel A/D
converters provide high resolution video quantization. With automatic video source and mode detection, users
can easily switch and adjust variety of signal sources. Multiple internal adaptive PLLs precisely extract pixel
clock video source and perform sharp color demodulation. Built-in line-buffer supports adaptive 2-D
comb-filter, 2-D sharpening, and synchronization stabler in a condense manner. The output format of
MST717A supports 6-bit or 8-bit TTL digital TFT-LCD modules.-The MST717A is a high quality ASIC for NTSC/PAL/SECAM car TV application. It receives analog
NTSC/PAL/SECAM CVBS and S-Video inputs TV tuners, DVD or VCR sources, including weak and distorted
signals, as well as analog RGB input GPS systems. Automatic gain control (AGC) and 8-bit 3-channel A/D
converters provide high resolution video quantization. With automatic video source and mode detection, users
can easily switch and adjust variety of signal sources. Multiple internal adaptive PLLs precisely extract pixel
clock video source and perform sharp color demodulation. Built-in line-buffer supports adaptive 2-D
comb-filter, 2-D sharpening, and synchronization stabler in a condense manner. The output format of
MST717A supports 6-bit or 8-bit TTL digital TFT-LCD modules.
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Size: 3693568 |
Author: Andrew85 |
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