iPower: Interactive Power Spectrum Demonstrator 2

Date Added: August 20, 2013 | Visits: 443

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Keyboard-controlled interactive power spectrum demonstrator, useful for teaching and learning about the power spectra of different types of signals and the effect of signal duration and sampling rate. Single keystrokes allow you to select the type of signal (12 different signals included), the total duration of the signal, the sampling rate, and the global variables f1 and f2 which are used in different ways in the different signals. When the Enter key is pressed, the signal (y) is sent to the Windows WAVE audio device. Press K to see a list of all the keyboard commands.T. C. O'Haver (toh@umd.edu), version 1, May 2011KEYBOARD CONTROLS: Adjust signal duration 10% up/down......A,Z Adjust sampling rate 10% up/down........S,X Adjust first variable 10% up/down...... D,C Adjust second variable 10% up/down..... F,V Print keyboard commands...................K Play signal as sound.............Enter or P SIGNAL TYPES` Sine wave, frequency f1 (Hz), phase f21 Square wave, frequency f1 (Hz), phase f22 Sawtooth wave, frequency Ff1(Hz)3 Triangle wave, frequency f1 (Hz), phase f24 Sine wave burst of frequency f1 (Hz) and length f2 sec5 440 Hz carrier amplitude modulated by sine wave, frequency f1 (Hz) and amplitude f26 440 Hz carrier frequency modulated by sine wave of frequency f1 (Hz) and amplitude f27 Sine wave, frequency f1 (Hz), modulated with Gaussian of width f2 sec8 Sine wave, frequency f1 (Hz) with non-linear transfer function f29 Sine wave sweep from 0 to f1 (Hz)0 Sine wave of frequency f1 (Hz) and amplitude f2 plus random white noise- Pink (1/f) noise= Sine wave, frequency f1 (Hz), amplitude f2 plus pink noise

Requirements: No special requirements

Platforms: Matlab

Keyword: Adjust, Commandsk, Frequency, Phase, Print, Signal, Soundenter, Types, Updown

Users rating: 0/10

License: Shareware

Size: 10 KB

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