正弦或余弦类信号这里统称为正弦信号(sinusoidal signal),因为他们只是相位差\pi/2的关系。定义如下: \begin{aligned} f(t) &= Asin(\omega t +\varphi) \\ \\ f[k] &= Asin(\omega k +\varphi) \end{aligned} 代码: t=-10:0.01:10;ya=sin(t);plot(t,ya);hol
Thefftfunction in MATLAB® uses a fast Fourier transform algorithm to compute the Fourier transform of data. Consider a sinusoidal signalxthat is a function of timetwith frequency components of 15 Hz and 20 Hz. Use a time vector sampled in increments of 1/50 seconds over a period of 10...
forii = 1:2 xsine = sine(); xdec = decimate(xsine); scope(xsine,xdec)endrelease(scope) Close the Time Scope window and clear the variables. clearscopeFssinedecimateiixsinexdec Create a vector representing a complex-valued sinusoidal signal and atimescopeobject. Call the scope to display...
Module 7: Sinusoidal Steady State Analysis Solve a circuit in the steady state when the input signal is a sinusoid. Providing background information, instructions, interactive tasks, examples, and exercises in Live Scripts and verifications in Simulink Simscape Module 7a: Transfer Function Solve a...
Copy Code Copy Command Create a sinusoidal signal sampled at 48 kHz. The signal has a fundamental of frequency 1 kHz and unit amplitude. It additionally contains a 2 kHz harmonic with half the amplitude and additive noise with variance 0.1². Get fs = 48e3; t = 0:1/fs:1-1/fs;...
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For example, to release system resources of a System object named obj, use this syntax: release(obj) expand all Common to All System ObjectsExamples collapse all Construct a Sinusoidal Signal Using High Energy FFT Coefficients Copy Code Copy Command Compute the FFT of a noisy sinusoidal input ...
% SIMULATE DATA % discrete times dt = 1/5; % sampling rate of signal (Hz) tlen = 6; % length of signal (seconds) t = (0:dt:(tlen-dt))'; % inject a simulated sinusoidal signal model amp = 10.0; % signal amplitude phi0 = 2.3; % initial phase of signal (rads) freq = ...
Signal-to-noise ratio, returned as a real-valued scalar expressed in decibels relative to the carrier (dBc). The SNR is returned in decibels (dB) if the input signal is not sinusoidal. Data Types:double|single Total noise power of the nonharmonic components of the input signal, returned as...
Signal-to-noise ratio, returned as a real-valued scalar expressed in decibels relative to the carrier (dBc). The SNR is returned in decibels (dB) if the input signal is not sinusoidal. Data Types:double|single Total noise power of the nonharmonic components of the input signal, returned as...