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STM32-320240display
- stm32采样波形同时在液晶上显示出来 并计算出频率-stm32 sampling the waveform at the same time in the liquid crystal display and calculate the frequency of
GuiSin
- 本人精心收集的正弦内插算法,根据此算法,每个周期2.5采样点就可以重构一个正弦波形,经改造可用于VC和matlab-I carefully collected the sine interpolation algorithm, based on this algorithm, each cycle of 2.5 sampling points can reconstruct a sine wave-shaped, can be used by the transformation of VC a
DlgWaveComm
- 是个串口的数据采集界面程序,完成对采样数据的归一化处理和波形显示,适合现学现用。-Is a serial interface for data acquisition procedures, the completion of the sampling data, normalized, and waveform display, suitable for the current study is to use.
FM-Modem
- Simulink 实现的FM调制,载波13KHz,频偏3KHz,调制波形存为一个波形文件。FM解调采样双斜率鉴频,解调直接输出到声卡。-Simulink implementation of the FM modulation, carrier 13KHz, offset 3KHz, modulation waveform file saved as a waveform. FM demodulation of two-slope Kam sampling frequency, demodulat
mpsound
- 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
ding
- 选取windows系统自带的ding.wav信号作为分析对象,在Matlab软件平台下,利用函数wavread对音频信号进行采样,记住采样频率和采样点数,听一下原始声音sound(y, fs, bits)。 (2)音频信号的频谱分析,先画出音频信号的时域波形;然后对音频号进行快速傅里叶变换fft(y,N),N取32768,画出信号的频谱特性,加深对频谱特性的理解。 (3)根据频谱,反演时域特性,画出时域波形。寻找幅值最大的两个频率,此频率除以fft点数在乘以采样频率就是信号的主频,即可合
wavegenerator
- 开发环境为QuartusII,能产生正弦波、三角波、方波和锯齿波,幅度为5V,采样为8位,在开发板已经验证通过,有详细的波形图和管脚分配图。-Development environment for QuartusII, can generate sine wave, triangle wave, square wave and sawtooth wave, ranging from 5V, sampling for 8, in the development board has to verif
hellodsp
- 运用ad采样值通过pid双环控制来实现pwm波形的数字开关电源的程序-Using AD samples values through the pid 2-ring control PWM waves to realize the digital switch power program
shiboqi_51_12864
- 用c51单片机+12864实现示波器功能——单次触发+存储回放系统方案中信号经过直流偏置输入到模数转换芯片AD876,AD转换输出后输入到先入先出存储器。在单片机的控制下将存储在存储器中 的采样数据读取并将波形在LCD中显示,同时,可以通过两路DA输出可以在普通示波器中实时回放波形-SCM+12864 achieved using the oscilloscope function c51- Single Trigger+ storage playback system program
yuyinluzhiyuchili
- 1.录制一段自己的语音信号,并对录制的信号进行采样; 2.画出采样后的语音信号的时域波形和频谱图; 3.给定滤波器的性能指标,采用窗函数法和双线性变换法设计滤波器, 并划出滤波器的频域响应; 4.用该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; 5.回放语音信号; 6.设计一个信号处理系统界面-1. Recorded their own voice for some signal, and
chapter051
- 频域采样重建序列和原序列的时域波形,原始频谱与补零频谱的比较等-Frequency-domain sample sequence and the reconstruction of the original sequence of time-domain waveform, the original spectrum with zero spectrum comparison
PWM
- 采样控制理论中有一个重要结论:冲量相等而形状不同的窄脉冲加在具有惯性的环节上时,其效果基本相同。PWM控制技术就是以该结论为理论基础,对半导体开关器件的导通和关断进行控制,使输出端得到一系列幅值相等而宽度不相等的脉冲,用这些脉冲来代替正弦波或其他所需要的波形。 对不了解PWM的开发人员很有帮助。-Sampling control theory have an important conclusion: the same impulse and different shapes of the
IIR
- 用双线性变换法设计IIR数字滤波器 (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)以0.02π 为采样间隔,打印出数字滤波器在频率区间[0,π / 2] 上的幅频响应特性 曲线。 (3)用所设计的滤波器对实际心电图信号采样序列(在本实验后面给出)进行仿真滤 波处理,并分别打印出滤波前后的心电图信号波形图,观察总结滤波作用
CWsinal
- matlab绘制CW信号的时域波形,同时对信号进行频谱分析,并考察采样频率以及信噪比对频谱分析的影响。-matlab draw CW signal time-domain waveform, and spectral analysis of signals and the sampling frequency and signal to noise ratio study of the impact of spectrum analysis.
LPM
- 用matlab绘制线性调频信号的时域波形,同时对信号进行频谱分析,并考察采样频率以及信噪比对频谱分析的影响。-Matlab drawing with linear frequency modulation signal time-domain waveform, and spectral analysis of signals and the sampling frequency and signal to noise ratio study of the impact of spectrum
Dis_Wave
- 能实现1Hz~50MHz间的频率测量,显示信号周期,能实现1Hz~15KHz间的信号波形实时显示,采样速率120KHz。-1Hz ~ 50MHz to achieve inter-frequency measurements show that the signal cycle, to achieve inter-1Hz ~ 15KHz real-time display of signal waveforms, the sampling rate of 120KHz.
VHDL_sin
- VHDL与Verilog示例(六) 8bit采样sine波形发生-VHDL and Verilog examples (f) 8bit sampling sine wave occurred
TrueWavAnalyzer
- 基于VB的WAV声音波形/频谱分析系统,真正的频谱分析程序,播放、采样分析,支持多声道采集,显示清淅的频谱图。-VB on the WAV sound waveform/spectrum analysis system, the real spectrum analysis procedures, playback, sampling and analysis in support of multi-channel acquisition, the spectrum shows clear mi
sss
- 模拟信号采样周期,若频率符合要求,则输出波形与原波形一致-Analog signal sampling period, if the frequency to meet the requirements, the output waveform consistent with the original waveform
PD_Barker
- 实现巴克码PD雷达体制的回波信号经滤波、放大、零中频、正交IQ处理采样后的波形图,此信号为第m个周期第k个采样点的信号模型-The realization of Barker Code PD radar system echo signal filtering, amplification, zero-IF, orthogonal sampling to deal with post IQ waveform diagram, the signal for the first m the firs