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danpin_fenduan_FFT
- 有相位跳变的单频信号,信号时域波形的刻画和FFT程序。注释完整,可读性高。-a single-frequency signal with phase jump and its FFT is described in this program and the explain is detailed, easy to read.
dsp
- 1.录制一段自己的语音信号,对录制的信号进行采样 画出采样后语音信号的时域波形和频谱图 给定滤波器的性能指标,采matlab设计数字滤波器,并画出滤波器的频率响应 然后用自己设计的滤波器对采集的信号进行滤波,画出滤波后信号的时域波形和频谱,并对滤波前后的信号进行对比,分析信号的变化 回放语音信号。2.-1. Recorded his voice for some signal, the signal is sampled on the record draw sampled speech si
cheng-xu
- (1)认真复习第七章中用窗函数法和等波纹最佳逼近法设计FIR数字滤波器的原理; (2)调用信号产生函数xtg产生具有加性噪声的信号xt,并自动显示xt及其频谱,如图10.5.1所示; 图10.5.1 具有加性噪声的信号x(t)及其频谱如图 (3)请设计低通滤波器,从高频噪声中提取xt中的单频调幅信号,要求信号幅频失真小于0.1dB,将噪声频谱衰减60dB。先观察xt的频谱,确定滤波器指标参数。 (4)根据滤波器指标选择合适的窗函数,计算窗函数的长度N,调用MATLAB函
soud-process
- 用图表表示出语音信号的语音信号时域波形,短时幅值和短时过零率,短时能量和短时过零率,短时幅值和短时能量,短时能量和短时幅值--hamming window。-Graphically show the voice signal voice signal waveform, amplitude and short-zero short-term rates, short-time energy and short-term zero crossing rate, short-term amplitu
chengxu-(6)
- 正弦信号的时频特性由振幅、角频率和初相位三个量确定,此程序是正弦信号时域波形的绘制-Sinusoidal signal from the time-frequency characteristics of amplitude, frequency and initial phase angle to determine three quantities, this procedure is time-domain sinusoidal signal waveform drawing
voiceplayer
- 声卡采集 动态显示时域波形及频率 可以设置采样参数-Dynamic display of the sound card capture time domain waveforms and frequency of sampling parameters can be set
YU-YINXINGHAO
- 本文是根据网上找的“信号的分析与处理综合实验”的内容,通过学习和MATLAB实践后的学习总结。实验内容为真实语音信号的采样重构,具体要求如下:录制一段自己的语音信号,并对录制的信号进行采样;画出采样前后语音信号的时域波形和频谱图;对降采样后的信号进行插值重构,滤波,恢复原信号。-failed to translate
xiaobosuanfa
- 采样频率 fs=10000 轴承外环故障信号 fid=fopen( bearingout.dat , r ) 故障 N=1024 xdata=fread(fid,N, int16 ) fclose(fid) xdata=(xdata-mean(xdata))/std(xdata,1) 时域波形 figure(1) plot(1:N,xdata) xlabel( 时间 t/n ) ylabel( 电压 V/v )
34
- 根据滤波器指标选择合适的窗函数,计算窗函数的长度N,调用MATLAB函数fir1设计一个FIR低通滤波器。并编写程序,调用MATLAB快速卷积函数fftfilt实现对xt的滤波。绘图显示滤波器的频响特性曲线、滤波器输出信号的幅频特性图和时域波形图。
tongxinfangzhen3
- 滚降系数为0.5的升余弦滚降系统的时域波形,二进制序列经过滚降系统后输出,画出输出端信号的时域波形和眼图。-Roll-off factor of 0.5 Raised Cosine system in time domain waveforms, binary sequence through the roll-off system after the output, draw the time-domain output signal waveform and eye diagram.
yuyingfenxi
- 录制一段自己的语音信号,时间为10s左右,并对录制的信号进行采样;画出采样后语音信号的时域波形和频谱图;采用窗函数法或双线性变换设计滤波器,并画出滤波器的频率响应;然后用自己设计的滤波器对采集的语音信号进行滤波,画出滤波后信号的时域波形和频谱,并对滤波前后的信号进行对比,分析信号的变化;回放语音信号.-Record a voice signal their time was 10s or so, and the recorded signal is sampled draw sampled s
AM
- AM调制信号的时域波形和频谱,参数可自己修改-AM modulated signal time-domain waveform and frequency spectrum
Sampling
- 简单的采样,设计一个输入序列,实现其采样,绘出采样后的时域波形-Simple sampling design an input sequence, to achieve its sample, drawn after the time-domain waveform sampling
shiyupinyutu
- 对语音信号的分析,其中包括语音信号的时域波形和频域波形图。-On the speech signal analysis, including the speech signal time-domain waveform and frequency domain waveform graph.
yuxiangunjiang
- 用matlab画出α=0,0.5,1的余弦滚降系统的频谱,并画出各自对应的时域波形-Matlab draw α = 0,0.5, 1 cosine roll-offs system of spectrum, and draw their corresponding time domain waveform
gunjiang
- 用matlab画出α=0,0.5,1的余弦滚降系统的频谱,并画出各自对应的时域波形。以α=1的余弦滚降系统为例,进行二进制双极性数字基带信号传输,试画出接收端的基带信号波形及眼图。-Matlab draw α = 0,0.5, 1 cosine roll-offs system of spectrum, and draw their corresponding time domain waveform. To α = 1 cosine roll-offs system as an example
am-dsb-ssb
- 正弦信号通过幅度调制(AM,DSB,SSB)所得到的时域波形及频域波形-AM,DSB,SSB waveforms in frequency- domain and Time domain
xinhao
- 信号,噪声,信号加噪声,FFT,matlab仿真,时域波形,频谱图-Signal, noise, signal plus noise, FFT, Matlab simulation, time-domain waveform, spectrogram
ask-fsk-psk-qpsk-16qam
- bpsk qpsk 16qam 64qam时域波形-bpsk qpsk 16qam 64qam time domain
The-FIR-filter-design
- (附带有文档,文档中有方案,有程序有结果,设计完后对一段语音进行处理)给定滤波器的规一化性能指标(参考指标,实际中依据每个同学所叠加噪声情况而定)通带截止频率wp=0.25*pi。 采用窗函数法设计低通、高通、带通型FIR滤波器,对叠加噪声前后的语音信号进行滤波处理,绘出滤波器的频域响应,绘出滤波后信号的时域波形和频谱,并对滤波前后的信号进行对比,分析信号的变化;在相同的性能指标下比较各方法的滤波效果,并从理论上进行分析-(With the document, document, program