Mu Analysis and Synthesis Toolbox

Generate a VARYING matrix containing a cosine, sine, or step signal at an evenly spaced time interval

Syntax

• out = cos_tr(freq,mag,tinc,lastt) 
  out = sin_tr(freq,mag,tinc,lastt) 
  out = step_tr(timedata,stepdata,tinc,lastt)
  

Description
cos_tr, sin_tr, and step_tr generate time signals for use with the trsp (time response) command. The following are the input variables provided to cos_tr and sin_tr:

Inputs to cos_tr and sin_tr:

freq	frequency of the cosine (sine) signal (radians/second)
mag	magnitude of signal
tinc	time step (increment)
lastt	final time (the signal starts at time t=0)

Output:

out	time varying matrix of the cosine (sine) signal

Inputs to step_tr:

timedata	time at which step occurs (vector)
stepdata	magnitude of step (vector)
tinc	time step (increment)
lastt	final time (the signal starts at time t=0)

Output:

out	time varying matrix of steps

Examples
Synthesize a cosine signal with a 1 Hz frequency and of magnitude 1.5, 5 seconds in length. The time increment is .05 seconds.

• out=cos_tr(2*pi,1.5,.05,5); 
  vplt('iv,d',out) 
  grid 
  title('Generate a cosine signal via cos_tr') 
  xlabel('time (seconds)') 
  ylabel('Magnitude')
  
  
  

Algorithm
cos_tr and sin_tr call the MATLAB commands cos and sin, respectively.

See Also
minfo, siggen, trsp, vpck

cmmusyn

crand, crandn, sysrand, varyrand