For more advanced capabilities, refer to the Simulink documentation regarding S-functions, particularly M-file S-functions. Hopefully this example helps get you started. In FM, the frequency of the carrier signal having a large frequency is modified following the instant amplitude of the modulating signal having low frequency. Just about anything you can do in MATLAB, you can use the MATLAB Function block to do from Simulink. * Your Simulink models can take advantage of MATLAB's Generic DLL calling capability. * You could hook your model up to Oracle or another ODBC or JDBC compliant database using the Database Toolbox. * Your models could process live video and image data from cameras and frame grabbers supported by the Image Acquisition Toolbox. After watching this video you will be able to- Implement Amplitude modulation in Simulink Visualize the modulated signal in time domain as well as in frequency domain. Save Signal Analyzer sessions to resume your analysis later or on another machine. The model in this example is configured to log Simscape data for the whole model for the entire simulation time. This example requires a simulation log variable in your MATLAB ® workspace.
* You could interface Simulink to scientific instruments like an oscilloscope, network analyzer, power meter, or waveform generator using the Instrument Control Toolbox. Generate MATLAB scripts to automate the computation of power spectrum, spectrogram, or persistence spectrum estimates and the extraction of regions of interest. The online analysis uses the Simscape Spectrum Analyzer block. (It's actually just a modified version of dspstfft_win32.mdl, a demo that ships with the Signal Processing Blockset.)You could just as easily use the same approach to interface your models to other support plug-in data acquisition hardware, not to mention a variety of other data sources.
This can be useful to validate models with real data under different test conditions for example.This example uses the Data Acquisition Toolbox to process audio data from the Windows soundcard. The output of the Subsystem block in the Algorithm area is an input to the LED block in the Raspberry Pi Actuators and Outputs area. The MATLAB Function block can be used to stream live data into a Simulink model. In the Display and Visualization area, you can view the original signal and the filtered signal on the time scope and spectrum analyzer. The harmonic distortion measurements can be invoked from the Measurements option in the Tools menu, or by clicking its corresponding icon in the toolbar (shown depressed in the figure, below).Audio Spectrum Analyzer - Simulink model and Data Acquisition Toolbox analyze streaming audio from Windows soundcard. You can measure harmonic distortion by stimulating the amplifier with a sinusoidal input and viewing the harmonics in a spectrum analyzer. If you change other coefficients, you can change the higher-order harmonics of the amplifier. Ieee Digital Communication systems using Matlab and Simulink. If you change the next-to-last coefficient, you change the voltage gain of the amplifier. DIGITAL COMMUNICATION SYSTEMS USING MATLAB AND SIMULINK is divided into analog and digital. If you edit the last coefficient you change the DC voltage offset of the amplifier.
The coefficients are arranged from highest-to-lowest order. You can modify the parameters of the amplifier by changing the polynomial coefficients.
You can modify the amount of additive noise on the input by clicking on the Noise Source and modifying the variance of the Gaussian distribution. The input is first combined with a Gaussian noise source and then run through a high-order polynomial to model non-linear distortion.