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The Basement
Garage Loudspeaker Lab
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<blockquote data-quote="Mark DeArman" data-source="post: 137521" data-attributes="member: 950"><p>Re: Garage Loudspeaker Lab</p><p></p><p></p><p></p><p>Regardless of the post-processing window you apply, you are still effectively convolving the recorded waveform with a window the size of the sweep first, to recover the impulse response. Depending on the tapering, instantaneous frequency (ie. linear, exp/log chirp), and other things it will approximately be sinc function whose main-lobe width is related to the sweep length. Ie. Longer sweep, narrower main-lobe and better frequency localization, shorter sweep, wider main-lobe and more smearing of any correlated noise.</p></blockquote><p></p>
[QUOTE="Mark DeArman, post: 137521, member: 950"] Re: Garage Loudspeaker Lab Regardless of the post-processing window you apply, you are still effectively convolving the recorded waveform with a window the size of the sweep first, to recover the impulse response. Depending on the tapering, instantaneous frequency (ie. linear, exp/log chirp), and other things it will approximately be sinc function whose main-lobe width is related to the sweep length. Ie. Longer sweep, narrower main-lobe and better frequency localization, shorter sweep, wider main-lobe and more smearing of any correlated noise. [/QUOTE]
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