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
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...
Randomly generated information is modulated using 16 QAM and passed through Rayleigh fading channel and AWGN is added.PSAM (pilot symbol assisted modulation)i.e pilot symbols are inserted into sequence of information symbols periodically is done...
This project is based on DSP algorithm which is capable of producing fundamental frequencies of an guitar.
Its very easy to implement.
http://simulations.narod.ru/
to run GUI run stroboscope.m
See video of result of slow motion guitar string:
There was made stroboscope from LEDs. LEDs was get from flashlight, The stroboscope drived from...
In FORMANT_TRACKER.M the input speech waveform is broken up into number of overlapping frames. LPC analysis for each frame, frequencies for each frame are plotted are also given as output in a matrix.
Conversions of these routines into Matlab.From:http://pubs.usgs.gov/of/1995/ofr-95-0077/o...77.htmlAnderson, W.L, 1983, Fourier cosine and sine transforms using lagged convolutions in double-precision (Subprograms DLAGFO/DLAGF1): U.S. Geological...
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,...
Calculates resonant frequencies and mode shapes for Resonant Ultrasound Spectroscopy. This program can function with the common sample shapes used in RUS by material scientists and engineers. Included is a paper explaining the motivation for the...
Function HISTF ('flexible histogram') extends Matlab's HIST by letting one bound displayed percentiles, set x-axis limits and y-axis maximum, set x bin size, and draw a marker line at given x position. In contrast to HIST, relative rather than...
Extract specific Channels from BIOSEMI DATA FILE (BDF)
Function reads in BDF data format and rewrites the specified channels to file. This has proven useful with very large datasets (e.g. high sampling frequencies) that must circumvent memory...
This GUI was designed to help users to better understand the Undersampling/Bandpass Sampling technique. While you're urged to follow the above link, to better understand this topic, a brief explanation follows:
All of us, dealing with...
u can enter any no. of bits and it will modulate with two frequencies and correspondingly it will demodulate the same signal after addition of awgn with desired snr ratio
Two complete applications in C, one for the Texas Instruments C5000 fixed-point processor and the other for the TI C6000 floating-point processor. This self-teach application / laboratory is aimed at beginners to allow them to use DSP to generate...
[ih]=invFIR(type,h,Nfft,Noct,L,range,reg,window)
- optional GUI included-
inputs overview
---------------
type:
1. 'linphase': symmetric two-sided response compensating magnitude while maintaining original phase...
This program operates as a signal spectrum analyzer and a distortion meter at the same time. It can accept any numerical data representing few cycles of a signal. The data do not need to be equally separated. At least ten data points per cycle are...
function [P R]=Global_Moupfouma(Rzz1,ClimZone)
Function implementing the Global Moupfouma model,
As per Electronic Letters paper "Point Rainfall rate cumulative
distribution valid at various locations"
F. Moupfouma...
Genomic signature using Chaos game representation of frequencies. The zip file includes two examples of genomic signature (A. fulgidus).
References:
[1] P.J. Deschavanne, A. Giron, J. Vilain, G. Fagot, and B. Fertil. Genomic...
This application aims to show visually the effects of filter frequency change on signal.It is provided with dynamic filter which can change its low and high frequencies by user mouse drag.
References :
Digital Signal Processing by Li Tan
Consider a binary classification task, and a real-valued predictor, where higher values denote more confidence that an instance is positive. By setting a fixed threshold on the output, we can trade-off recall (=true positive rate) versus false... | 
