This is an implementation of the calculation of STC value according to ASTM E 413-04. Classification for Rating Sound Insulation.
Input the transmission loss in one third octave bands (dB) and enter the frequency bands and the program will calculate the STC value and produce a graph.
The center frequencies do not have to be exact as the program matches them to the reference contour and applies a tolerance
From GUI can import arbitrary data or audio signal. Next we can plot them both in time and frequency domain. Also we can visualize the short time Fourier transform of that signal.
This submission was created by Valery Tchkalov and Steve Miller to help engineers understand parameterization of hydraulic valves. The included white paper, simulation models, and MATLAB scripts cover the structure of a valve model, examples of...
Transmission line length formula for coaxial cable to an antenna(the velocity factor for coax is approximately 0.66)frequency is in Mhz,length is in feet.
adding a 2nd order filter we can plot variation in frequency due to the faults or disturbances.
The program gives the frequency response of t-type attenuator.
function y = getiq(x,freq)
this takes in the frequencies X that were received at a rate of FREQ and gives you a complex value which is I and Q - this is used when you have frequency X changing and the phase is cumulative - meaning it does not...
Biometrics is an emerging field of technology using unique and measurable physical, biological, or behavioral characteristics that can be processed to identify a person. Biometric properties of human are fingerprint, iris, face and voice.
Simple functions designed to show the power of MATLAB on the LeCroy WaveMaster Oscilloscope.
These examples include:
Manipulating and analyzing waveforms
Finding primary sinewaves
This m-file performs the Bowker's test for symmetry. It is an extension of the McNemar test to a KxK situation. There are now K response categories for the two dependent samples.
The null hypothesis is that the probabilities in the...
An M-File for automated tremor analysis which returns the amplitude and frequency of tremor recorded with Polhemus Fastrak.
Relies on functions within the Signal Processing and HOSA
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.
After publishing my new block library simulink Detector of Frequency Signal,I calibrate for having linearity,so in input F=1HZ out is F=1HZ.
Laboratory 6 of 12 for the Texas Instruments TMS320C5416 DSK.
A self-teach application or college laboratory to allow the student to find out by practical experiment the answer to the following question:
An Infinite Impulse...
This m-file plots the transmitted signal of slow frequency hopped spread spectrum.This uses one symbol transmission per frequency hop.
Multiscreen difraction PLmsd due to N+1 buildings replaced by equivalente N+1 absorving screen is quantized as 20log10(|Q(N+1,gc)|).
Wb: distance between buildings;
Ws: street width;
ht: tx antenna heigth;
hb: mean building...
This simulator creates a source to microphone impulse response in complex room environments. It's based on the image method by Steven Boll'79. You may select frequency dependent wall coefficients and orientation dependent sources. Please refer to...
Uses a microphone to listen to the sounds generated when buttons are pressed on a touch telephone and to display result on a PC. C code application for the Texas Instruments TMS320C5510 DSK.May also be applied to other devices in the C5000 family....
function [f,a] = iqtofreqplot(x,freq)
Finds the angle and frequency of IQs it then plots the angle and frequency as a function of time IQTOFREQPLOT('complex data', 'rate at which received I and Q per second')
if you choose...
This script simulates the Binary Frequency Shift keying. Since BFSK is a digital modulation scheme, you can modulate as many bits as you want. however, I have only simulated it for few bits, so that the results are visible.
This is code...