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How can I reduce the frequency of a sine wave tia sal22
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Rick T
Nov 6, 2009, 3:37:28 PM11/6/09
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Greetings All
I have the example below which produces 10 cycles
a = Sin[10 x]
Plot[a, {x, 0, 2 Pi}]
What Type of signal would I need to add/multiple/divide to reduce it's
signal/frequency to 5 cycles? I know I can just change the number 10
to 5
but I need to combine it with another signal. what mathematical
operation/signal do I need to use.
tia sal2
mike
Nov 8, 2009, 4:24:24 PM11/8/09
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In article <79b6528e-380d-420b-9f25-4f1c8fde2c02
@b25g2000prb.googlegroups.com>, ratu...@gmail.com says...In simplest terms you want to know G such that G*sin(10x)=sin(5x)
so G = sin(5x)/sin(10x) = 1/2cos(5x) ... if you want multiplication
@b25g2000prb.googlegroups.com>, ratu...@gmail.com says...
so G = sin(5x)/sin(10x) = 1/2cos(5x) ... if you want multiplication
Or you want to know F such that F+sin(10x) = sin(5x)
so F = sin(5x) - sin(10x) = sin(5x)(1-2cos(5x))...if you want addition
I will leave subtraction and division to you.
Mike
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