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Deathfish
Group Title
What are the harmonic components of a sawtooth wave? Need first 10 harmonics... lesson on MATLAB, not fourier transform
 2 years ago
 2 years ago
Deathfish Group Title
What are the harmonic components of a sawtooth wave? Need first 10 harmonics... lesson on MATLAB, not fourier transform
 2 years ago
 2 years ago

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fwizbang Group TitleBest ResponseYou've already chosen the best response.1
You need to take the fourier transform of f(x) = x (1<x <1).
 2 years ago

Deathfish Group TitleBest ResponseYou've already chosen the best response.0
hmm im using this to generate a waveform in MATLAB  supposed to sum together sine waves to get sawtooth wave of frequency 40 Hz, amplitude 4
 2 years ago

Deathfish Group TitleBest ResponseYou've already chosen the best response.0
MATLAB class, not calculus class ... so what are the first 10 harmonics?
 2 years ago

fwizbang Group TitleBest ResponseYou've already chosen the best response.1
Then I would suggest you use MATLAB's fft function to calculate the Fourier coefficients, or you could look here http://mathworld.wolfram.com/FourierSeriesSawtoothWave.html Be careful though there seems to be an algebra mistake on line 5
 2 years ago

Deathfish Group TitleBest ResponseYou've already chosen the best response.0
ok for the above equation from worlfram.. how to modify it for frequency 40 Hz, amplitude 4 ?
 2 years ago

fwizbang Group TitleBest ResponseYou've already chosen the best response.1
The period at Wolfram is 2L and the amplitude is 1. So multiply by 4 to get the amplitude right and set 40 Hz = 1/(2L) and solve for L to get the fundamental frequency correct.
 2 years ago
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