How to plot loudspeaker frequency response from its impulse response?

I have the impulse response of a loudspeaker - how do I convert this to a frequency response and plot it as a typical frequency response plot as shown in attached image.

Thanks

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Answer 1

[Honglei Chen]

Frequency response is the Fourier transform of the impulse response so you should be able to use freqz to compute it if you are talking about in discrete domain. For plotting, you may want to use semilogx.

For example,

h = rand(1,64); % impulse response
fs = 1000;
Nfft = 128;
[H,F] = freqz(h,1,Nfft,fs);
semilogx(F,mag2db(abs(H))); grid on;
xlabel('Frequency (Hz)'); ylabel('Magnitude (dB)');

HTH

[Sanya Tayal]

Hey, what does the '1' mean in freqz(h,1,Nfft,fs) ?

Answer 2

[Star Strider]

I would take the Fourier transform of the impulse response. (Use the fft (link) function.)

That should be the frequency response of the speaker.