Search - signal sampling

[matlab] pcmcode

Description: 将输入A律PCM编码器的正弦信号采样,进行PCM编码，求出编码器的输出码组序列。-legal importation A PCM encoder sinusoidal signal sampling, PCM coding, coding obtained the output code sequence.
Platform: | Size: 28672 | Author: 刘奇 | Hits:

[Software Engineering] sampleandrebuildofcontinoussignal

Description: 连续信号的采样与重构，主要说明信号采样与重构程序-continuous signal sampling and Reconstruction, the main note signal sampling procedures and Reconstruction
Platform: | Size: 2048 | Author: 徐恒梅 | Hits:

[matlab] JIN

Description: 录制一段个人自己的语音信号，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；给定滤波器的性能指标，采用窗函数法和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；最后，设计一个信号处理系统界面。-Record a person s own voice signal, and recording the signal sampling draw sample after the speech signal time-domain waveform and frequency spectrum given filter performance indicators, using a window function method and the bilinear transform filter design and draw the frequency response filter then use the filter of their own design for the signal acquisition filtering, after filtering the signal to draw the time-domain waveform and spectrum, and filtering of signals before and after contrast, analysis of signal changes playback of voice signal Finally, the design of a signal processing system interface.
Platform: | Size: 2048 | Author: yim | Hits:

[Other] wlan_transmitter

Description: WLAN仿真－发送机 wlan No Comments 设置完系统参数后，开始产生发送数据。 1. 产生随机的发送bit（tx_bits），这里不考虑信道编码。 2. QAM映射 3. 将数据映射到不同载波，形成OFDM符号 4. 产生pilot，并将pilot插入OFDM符号中 5. 加入dc和guard子载波 6. 进行ifft，将频域信号变到时域，并加入循环前缀 7. 对信号进行overlap window 8. 在时域产生short preamble 9. 在时域产生long preamble 10. 将preamble和数据符号组成packet 11. 升采样得到信道传输的数据Tx_signal_up 具体程序见附件 wlan_transmitter.m-WLAN Simulation- wlan No Comments transmitter system parameters set finished, the beginning to have to send data. 1. Have sent random bit (tx_bits), here does not consider channel coding. 2. QAM mapping 3. The data is mapped to a different carrier to form OFDM symbols 4. Have a pilot, and pilot inserted OFDM symbols 5. Adding dc and guard subcarriers 6. To carry out ifft, will change the frequency domain signal to time domain, and add cyclic prefix 7. the signals overlap window8. In the time domain have a short preamble9. In the time domain have a long preamble10. the preamble and data symbols packet11. or sampling received data transmission channel Tx_signal_up specific procedures see Annex wlan_transmitter.m
Platform: | Size: 1024 | Author: 福东方 | Hits:

[Multimedia program] pcm

Description: 适用MATLAB仿真实现对模拟信号的采样量化编码程序（模拟信号采样经均匀量化后自然二进制编码），通信系统仿真必备-The application of MATLAB simulation of analog signal sampling quantization coding procedures (analog signal sampling by the uniform quantization after the natural binary code), communication system simulation must
Platform: | Size: 1024 | Author: 侯婷 | Hits:

[Other] sample

Description: 使用matlab对正弦信号采样以及对其进行DFT变换-Matlab sinusoidal signal on the use of sampling, as well as its DFT transform
Platform: | Size: 38912 | Author: 史惠 | Hits:

[Speech/Voice recognition/combine] voiceFreqChange

Description: 改变声音信号采样频率的matlabt程度-Change the voice signal sampling frequency matlabt the extent of
Platform: | Size: 1024 | Author: opt | Hits:

[matlab] filter

Description: ％ y=filter(sig,fmin,fmax) ％对信号进行理想滤波，可完成低通，带通％ sig为被滤波信号％ fmin为下限频率，当fmin为0时为低通滤波器，当fmin>0时，为带通滤波器％ fmax为上限频率，fmax>fmin ％ fs为信号的采样频率％ y为经过滤波后的信号 -％ Y = filter (sig, fmin, fmax)％ of the ideal signal filtering, to be completed by low-pass, band-pass filter％ sig for signal％ fmin is the minimum frequency, when fmin for 0:00 for the low-pass filter, when fmin > 0, for the bandpass filter％ fmax is the upper limit frequency, fmax> fmin％ fs for signal sampling frequency％ y for the filtered signal
Platform: | Size: 1024 | Author: liu | Hits:

[Speech/Voice recognition/combine] mpsound

Description: 录制一段个人自己的语音信号。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；对语音信号进行加噪和去噪处理，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；实现快录慢放、慢录快放等功能。-Record a person' s own voice signal. Of the recorded signal sampling draw sample after the speech signal time-domain waveform and frequency spectrum of voice signals, noise and de-noising processing, draw Filtered time-domain signal waveform and spectrum, and filtering the signal before and after comparative analysis of signal changes playback voice signal realize quickly recorded slow release, slow release recorded faster functions.
Platform: | Size: 243712 | Author: 或或 | Hits:

[Other] szxhsy

Description: 数字信号处理实验详解及MATLAB实现源代码实验一：系统响应及系统稳定性实验二：时域采样与频域采样实验三：用ＦＦＴ对信号作频谱分析实验四：ＩＩＲ数字滤波器设计及软件实现实验五： FIR数字滤波器设计与软件实现实验六：　数字信号处理在双音多频拨号系统中的应用-Detailed experimental digital signal processing and MATLAB source code to achieve the experimental one: the system response and system stability experiment II: time-domain and frequency domain sampling Sampling Three: The FFT of the signal for spectrum analysis experiment four: IIR digital filter design and software Experimental realize Friday: FIR digital filter design and software implementation experiments VI: Digital Signal Processing in DTMF dialing system
Platform: | Size: 333824 | Author: wangjin | Hits:

[matlab] zhong

Description: 运用Matlab语言编程，进行信号分析的能力。音频信号是一种连续变化的模拟信号，计算机只能处理和记录二进制的数字信号，由自然音源而得的音频信号必须经过采样，量化和编码，变成二进制数据后才能送到计算机进行再编辑和存贮，通过本实验中了解模拟信号采样和重构的完整过程，加深对采样定理的理解。-Matlab programming language to use for signal analysis. Audio signal is a continuous change of the analog signal, the computer can only handle and record the binary digital signal, derived from natural sources of the audio signal to be sampled, quantification and encoding binary data into a computer in order to re- editing and storage, through this experiment to understand the analog signal sampling and reconstruction of the full process, to deepen understanding of the sampling theorem.
Platform: | Size: 1024 | Author: tong | Hits:

[matlab] matlab

Description: 应用MATLAB实现连续信号的采样与重构仿真-Application of MATLAB to achieve continuous signal sampling and reconstruction of simulation
Platform: | Size: 73728 | Author: 王鹏 | Hits:

[Other] timesample

Description: 基于 MATLAB 的时域信号采样及频谱分析，是很好的学习时域信号的matlab源代码。-MATLAB-based time-domain signal sampling and spectral analysis, is a very good study of time-domain signal matlab source code.
Platform: | Size: 1024 | Author: dean | Hits:

[Audio program] multisamplerate

Description: 改变原始wav音频信号的抽样频率，并且显示处理前后声音信号的频谱.有助于帮助大家理解奈圭斯特抽样定理。-Change the original wav audio signal sampling frequency, and shows the spectrum of sound signal before and after treatment. Helps to help you understand the Nyquist sampling theorem.
Platform: | Size: 143360 | Author: leo | Hits:

[Other] Sampling

Description: 信号的采样与重建，对已知连续信号进行采样，然后通过离散信号恢复原始信号。-Signal sampling and reconstruction of continuous signals to known samples, and then restore the original signal through the discrete signal.
Platform: | Size: 1024 | Author: lipinglin | Hits:

[matlab] zr

Description: 1. 用双线性变换法设计一个巴特沃斯低通IIR数字滤波器。设计指标参数为：在通带内频率低于0.2π时，最大衰减小于1dB；在阻带内[0.3π, π]频率区间上，最小衰减大于15dB. 2.0.02π为采样间隔，打印出数字滤波器在频率区间[0, π/2]上的频率响应特性曲线。 3. 用所设计的滤波器对实际心电图信号采样序列进行仿真滤波处理，观察总结滤波作用与效果附：心电图采样序列x(n) 人体心电图信号在测量过程中往往受到工业高频干扰，所以必须经过低通滤波处理后，才能作为判断心脏功能的有用信息。下面给出一实际心电图信号采样序列样本x(n),其中存在高频干扰。在实验中以x(n)作为输入序列，滤除其中的干扰成分。 {x(n)}={-4,-2,0,-4,-6,-4,-2,-4,-6,-6,-4,-4,-6,-6,-2,6,12,8,0,-16,-38,-60,-84,-90,-66,-32,-4,-2,-4,8,12,12,10,6,6,6,4,0,0,0,0,0,-2,-4,0,0,0,-2,-2,0,0,-2,-2,-2,-2,0} -1. With the bilinear transformation to design a Butterworth low-pass IIR digital filter. Design target parameters: the passband frequencies below 0.2π, the maximum attenuation is less than 1dB in the stopband [0.3π, π] frequency range, the minimum attenuation greater than 15dB. 2.0.02π for the sampling interval, print out the digital filter in the frequency interval [0, π/2] on the frequency response curve. 3. With the designed filter on the actual ECG signal sample sequence to simulate filtering, observation summed up the role and effect of filtering Attachment: ECG sampling sequence x (n) Human ECG signal in the measurement process is often subject to industrial high-frequency interference, it must be low-pass filtering before they can determine cardiac function as a useful information. Here are a sample of the actual ECG signal sampling sequence x (n), where there is high frequency noise. In the experiment with x (n) as the input sequence, in which the interference filter e
Platform: | Size: 3072 | Author: zr | Hits:

[Windows Develop] limited-update-rate-of-the-non-band-limited-signal

Description: 基于有限更新率的非带限信号采样与重建算法Based on the limited update rate of the non-band-limited signal sampling and reconstruction algorithm-Based on the limited update rate of the non-band-limited signal sampling and reconstruction algorithm
Platform: | Size: 62464 | Author: niudun10 | Hits:

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