Traditional room-equalization involves exciting one loudspeaker at a time and deconvolving the loudspeaker-room response from the recording. As the number of loudspeakers and positions increase, the time required to measure loudspeaker-room responses will increase. In this paper, we present a technique to deconvolve impulse responses after exciting all loudspeakers at the same time. The stimuli are shifted relative to a base-stimuli and are optionally pre-processed with arbitrary filters to create specific sounding signals. The stimuli shift ensures capture of the low-frequency reverberation tail after deconvolution. Various deconvolution techniques, including with and without spectrum-shaping filters, are presented. The performance in terms of log-spectral distortion, as a function of stimuli length and shift, and impulse and magnitude response error plots for the Multichannel Acoustic Reverberation Dataset at York (MARDY) are presented.
(See document for exact affiliation information.)
https://aes2.org/publications/elibrary-page/?id=21473
(3644KB)
Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member Join the AES. If you need to check your member status, login to the Member Portal.
