Amplitude

Audio ToolBox is an audio function generator. Using no additional hardware, you can produce sine, square, triangle, and sawtooth waveforms of any frequency up to 22 kHz, as well as generate noise - both pink and white. You can generate up to 13 different waveforms. Each waveform can be routed to... Platforms: Mac

The Test Tone Generator (TTG) turns the PC into a programmable function generator for testing or demonstration, sound tuning, education and many other purposes.Features include: Constant and swept tones (log or lin); Many wave forms (Sine/square/triangle/sawtooth/white and pink noise with... Platforms: Windows

Focussed on the essential modules of an analogue synthesizer Alpha 3 offers true hands on operation. Everything is where you would expect it, nothing is more complex as it needs to be. Nothing is less powerfull as it needs to be. Alpha 3 is the sum of all our experience in synthesizer... Platforms: Windows

Focussed on the essential modules of an analogue synthesizer Alpha 3 offers true hands on operation. Everything is where you would expect it, nothing is more complex as it needs to be. Nothing is less powerfull as it needs to be. Alpha 3 is the sum of all our experience in synthesizer... Platforms: Mac

Use any simple radio transmitter to send Audio/Video or any other form of data via the soundcard. Rates up to 400kb/s possible. With two transmitters, 2way communication is possible. Uses quadrature amplitude modulation scheme (QAM). Robustness is done with Read Solomon coding, interleaving, and... Platforms: Windows, Linux

A program that generates music (WAV-like files) from a specification of tones in absolute frequencies, rather than the normal well-defined tones. The specification list all notes, their length, frequency and amplitude and the program generate a mix of all Platforms: Windows, Mac, Linux

SineTuner is a puzzle game, inspired by a minigame in the Myst series. Your goal is to make a function (combined of two sine waves) overlap a computer generated function. You do this by adjusting the frequency, amplitude and phase of the sines. Platforms: Windows, Mac, Linux

This program calculates the non-destructive zoom Fast Fourier transform of a time history.The input file must be time(sec) and amplitude(units)Reference: Randall, Frequency Analysis, Bruel & Kjaer, page 170. Platforms: Matlab

The inputs are the imf's amplitud and the imfs instantaneous frequency. The outputs are the Marginal Hilbert Spectrum (mhs) amplitude vector and a frequency vector corresponding to the amplitude vector. In order to obtain a more interpretable graph the instantaneous frequency vector can be... Platforms: Matlab

Arterial blood pressure waveforms contain rich pathophysiological information; hence receive much attention in cardiovascular health monitoring. To assist computerized analysis, an automatic delineator was proposed for the fiducial points of arterial blood pressure waveforms, namely their onsets,... Platforms: Matlab

CHAPTER 1: FOURIER ANALYSIS1.1 CONTINUOUS-TIME FOURIER SERIES (CTFS)1.2 PROPERTIES OF CTFS 1.2.1 Time-Shifting Property 1.2.2 Frequency-Shifting Property 1.2.3 Modulation Property1.3 CONTINUOUS-TIME FOURIER TRANSFORM (CTFT)1.4 PROPERTIES OF CTFT 1.4.1 Linearity 1.4.2 Conjugate Symmetry 1.4.3 Real... Platforms: Matlab

The sound denoising algorithm is based on the popular spectral subtraction technique. Based on the spectrum of the vuvuzela sound, this denoising technique simply computes an antenuation map in the time-frequency domain. Then, the audio signal is restored by computing the inverse STFT. See [1-3]... Platforms: Matlab

the stationary signal f(t)=cos(2*pi*5*t)+ cos(2*pi*10*t)+ cos(2*pi*20*t)+ cos(2*pi*50*t)having frequencies of 5,10, 20and 50 Hz at any given time instant.MATLAB program can be implemented to plot the stationary signal mentioned above:Clear... Platforms: Matlab

EDFT (Extended Discrete Fourier Transform) algorithm produces N-point DFT of sequence X where N is greater than the length of input data. Unlike the Fast Fourier Transform (FFT), where unknown readings outside of X are zero-padded, the EDFT algorithm for calculation of the DFT using only... Platforms: Matlab

This function loads a .iqt file from a Tektronix RSA3408A Real-Time Spectrum Analyzer into MATLAB. It performs amplitude and phase correction. If the filename is not specified or is empty, the user is prompted for the filename. A subset of the file can be loaded by specifying the first and last... Platforms: Matlab

random_band is the main program and it outputs a test signal which has a constant level. The instanatenous frequency varies randomly within the specified Nth octave band range.The program outputs three plots: time record of the instantaneous frequency, time record of the instantaneous level, and... Platforms: Matlab

FASTRMS Instantaneous root-mean-square (RMS) power via convolution.FASTRMS(X), when X is a vector, is the time-varying RMS power of X, computed using a 5-point rectangular window centered at each point in the signal. The output is the same size as X and contains, for each point in X, an estimate... Platforms: Matlab

HILBERT2 Extract instantaneous envelope and frequency from a bandlimited signal via Hilbert transform. [ENV FREQ] = HILBERT2(X,FS), for vectors X, returns estimates of the instantaneous envelope and frequency. X is assumed to be a band-limited signal sampled at a rate specified by FS (in units... Platforms: Matlab

This GUI Signal Processing tool will help us to process signal from any picture file.This tool will help us to perform signal processing operations at very friendly GUI menu. The menu is self explanatory.How to start1. Extract Zip file to desired location2. Open MATLAB3. Open the Tool and press... Platforms: Matlab

Compute the discrete Fourier transform at specified frequencies, not using fft.Why one may need this?(1) MATLAB fft function computes the amplitude of signals only (no phase).(2) Once having the recorded time-series data, one often uses fft to do the spectral analysis. However, the frequency set... Platforms: Matlab