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Use fft to analyse signal by plotting the original signal and its spectrum.  

/*  * _168ZHONGDUAN2.c  *  * Created: 2014/11/2 15:12:45  *  Author: lenovo  */  #include <avr/io.h> #include <avr/iom168pa.h> #include <avr/interrupt.h> #include <util/delay.h> #include <avr/eeprom.h> //#include <util/delay_basic.h> //unsigned char const SEGtabl ...

Description The STM3210E-EVAL evaluation board is a complete development platform for STMicroelectronic's ARM Cortex-M3 core-based STM32F103ZET6 or STM32F103ZGT6 microcontroller. The range of hardware features on the board help you to evaluate all peripherals (LCD, SPI Flash, USART, IrDA, USB, audio ...

Digital signals are signals which are sampled in time (“discrete time”) and quantised

The TAS3204 is a highly-integrated audio system-on-chip (SOC) consisting of a fully-programmable, 48-bit digital audio processor, a 3:1 stereo analog input MUX, four ADCs, four DACs, and other analog functionality. The TAS3204 is programmable with the graphical PurePath Studio™ suite of DS ...

设计中使用的信号为 信息信号： signal=sin(2*pi*sl*n*T) 高频噪声： noise =0.5*sin(2*pi*ns1*n*T) 混合信号： x=(signal+noise) 其中sl=1000Hz，ns1=4500Hz，T=1/10000。混合信号波形为滤波器输入信号波形，信息信号波形为输出信号波形，滤波器的效果为滤除两个高频噪声。 ...

jiaocao yongyu tongxingongcheng xinhao xuexi 

This report presents a tutorial of fundamental array processing and beamforming theory relevant to microphone array speech processing. A microphone array consists of multiple microphones placed at different spatial locations. Built upon a knowledge of sound propagation principles, the mult ...

We consider the problem of target localization by a network of passive sensors. When an unknown target emits an acoustic or a radio signal, its position can be localized with multiple sensors using the time difference of arrival (TDOA) information. In this paper, we consider the maximu ...

Connecting 32-bit controlled applications in the industrial, commercial and consumer markets is fast becoming a necessity rather than an option. Many new applications, such as remote data collection, home automation and networked appliances, require secure, high-performance connectivity at an econom ...