<< peak2peak FOSSEE Signal Processing Toolbox pei_tseng_notch >>
FOSSEE Signal Processing Toolbox >> FOSSEE Signal Processing Toolbox > peak2rms

peak2rms

This function calculates the ratio of peak magnitude to the Root Mean Square(RMS) value.

Calling Sequence

OUT=peak2rms(IN)
OUT=peak2rms(IN,orientation)

Parameters

in:

Vector or Matrix of real or complex elements.

orientation:

A string with possible values "r", "c" or "m" giving the dimension along which the peak2rms value is to be calculated.

out:

A scalar with real value when input is a vector.When input is a matrix, out is the peak magnitude to RMS value along the orientation specified or the default one when not specified.

Description

For vector as input, the output is the ratio of peak value to the RMS value. The RMS value can be calculated by taking the square root of mean value of the squared sum of the elements.

When a matrix is given as input the output is peak to RMS ratio in the orientation specified. The orientation can be given as string with values "r","c" or "m".

peak2rms(in, 1) calculates the values of ratio of peak to RMS of columns of matrix. The output in this case is a row vector with peak2rms value of each column of in.

peak2rms(in, 2) calculates the values of ratio of peak to RMS of rows of matrix, where the output would be a column vector having peak2rms value of each row of in.

The default orientation is chosen to be the index of first dimension of input greater than 1.Hence peak2rms(in) is equivalent to peak2rms(in, "m").

For an N dimensional array the orientation is the index of first non singleton dimension of the array.

If the elements of matrix are complex the absolute values are considered in the calculation of RMS value.

Examples

To calculate peak2rms of a vector:
IN=[6 19 10 25]
OUT=peak2rms(IN)
The output is OUT=
1.4638501
1.3887301
1.119186

Examples

To calculate peak2rms of rows of matrix:
IN=[1 3 5;2 4 6;7 8 9]
OUT=peak2rms(IN,2)
The output is
OUT= 1.3719887

Examples

To calculate peak magnitude to RMS value of sinusoid:

t=0:0.6:9
IN=cos(6*%pi*t);
OUT= peak2rms(IN)
The output is
OUT= 1.3719887

See also

Authors

Bibliography

Matlab help document.

Modified to accept char i/p

MOdified function to match MATLAB input arguments

Now for calculating the values of ratio of peak to RMS of columns of matrix use peak2rms(in,1)

And for calculates the values of ratio of peak to RMS of rows of matrix. use peak2rms(in,2)

Updated help comments accordingly

MOdifications done by by Debdeep Dey


Report an issue
<< peak2peak FOSSEE Signal Processing Toolbox pei_tseng_notch >>