@conference {3234,
	title = {Approximating Measured Reverberation Using A Hybrid Fixed/Switched Convolution Structure},
	booktitle = {Proc. 13th Int. Conf. Digital Audio Effects (DAFx-10)},
	year = {2010},
	note = {\&nbsp;},
	month = {09/2010},
	address = {Graz, Austria},
	abstract = {<div>An efficient reverberator structure is proposed for approximatingmeasured reverberation. A fixed convolution matching the early\&nbsp;portion of a measured impulse response is crossfaded with a switched\&nbsp;convolution reverberator drawing its switched convolution section\&nbsp;from the late-field of the measured impulse response. In this way,\&nbsp;the early portion of the measured impulse response is precisely reproduced, and the late-field equalization and decay rates efficiently\&nbsp;approximated. To use segments of the measured impulse response,\&nbsp;the switched convolution structure is modified to include a normalization filter to account for the decay of the late-field between the\&nbsp;nominal fixed/switched crossfade time and the time of the selected\&nbsp;segment. Further, the measured impulse response late-field is extended below its noise floor in anticipation of the normalization.\&nbsp;This structure provides psychoacoustically accurate synthesis of\&nbsp;the measured impulse response using less than half a second of\&nbsp;convolution, irrespective of the length of the measured impulse response. In addition, the structure provides direct control over the\&nbsp;equalization and late-field frequency dependent decay rate. Emulations of EMT 140 plate reverberator and marble lobby impulse\&nbsp;responses are presented.</div>},
	keywords = {artificial reverberator},
	author = {Lee, Keun Sup and Nicholas Bryan and Jonathan Abel}
}
