Butterworth

This function file is basically for Passive Butterworth Filter for Low pass as well as for High Pass. In input it takes the Pass Band Attenuation, Band Stop attenuation, Band Pass Frequency, band stop frequency, and Filter Type. For Low Pass Type is "0" and for High Pass Type is "1".It finally...

Returns equivalent IIR coefficients for an analog RC filterUsage: [B,A] = RC_FILTER(r, c, fs, type); R is the resistance value (in ohms) C is the capacitance value (in farrads) FS is the digital sample rate (in Hz) type is a character string defining filter type Choices are: 'high' or 'low'This...

You can use 4 types of filters:- Butterworth- Chebyshev 1- Chebyshev 2- EllipticYou can use them as:- Lowpass- Highpass- Bandpass- StopbandShowing theirs features in frequency, phase and the z plane. After the desing phase you can apply the designed filter in real time to incoming audio signal...


Platforms: Matlab

ButterParam - Fast parameters for a digital Butterworth filterThe calculation of filter parameters with BUTTER is expensive. Therefore ButterParam stores calculated parameters in a lookup-table to accelerate repeated calls with the same input.Example: x = rand(10000, 1); % test data [B, A] =...


Platforms: Matlab

Osalp is a project designed to implement a world class set of classes in C++ that will handle all of the audio functions one would like. It is designed to be multi-platform with UNIX based platforms as the base. This project is still in the beta code phase and a beta version that will...


Platforms: *nix

Important Note: This model could only be compatible with MATLAB 7(R14) and CCS 2.21. It might work for other versions of MATLAB & CCS but for that Sampling Rates & data types of various simulink blocks might have to be adjusted (changed) to obtain optimum performance & best ResultThis model can...


Platforms: Matlab

This script is intended to illustrate the concepts of eyediagramm, constellation, ISI and to understand the effects of additive noise power, channel frequency band restriction, number of possible states within a symbol period, affecting the quality of the transmission.Three methods are employed...


Platforms: Matlab

The zipped file contains 18 m files implementing all experiments in the course EC1302 DSP Lab under Anna University Chennai, India syllabus: butterworth lowpass filter design using bilinear transformation & impulse invariant methods given relative or absolute specifications, DIT-FFT & DIF-FFT...


Platforms: Matlab

Functions are described briefly below:1) er_add: Add given tranfer functions.2) er_blaschke: Perform desired frequency transformation of digital filter using Blaschke products.3) er_conv: Multiply transfer functions.4) er_fconv: Convolve transfer functions in frequency domain.5) er_firlsinv: Find...


Platforms: Matlab

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 Survey Open-File Report 83-320, 38 p. 026 DLAGF0/...


Platforms: Matlab