As a conclusion to previous work, cepstral analysis is applied to electroacoustic measurements in order to deconvolve room reflections and obtain an anechoic (free-field) result from measurements taken in a reverberant environment. Theoretical limitations of the cepstrum in dealing with bandpass systems are discussed and it is seen that room deconvolution is complicated by the inherent low-frequency high-pass nature of the loudspeaker itself. The phase nature of room reflections is also discussed and it is shown that minimum-phase behavior is still exhibited at the relatively large measurement distances and the modest time window lengths required for adequate low-frequency measurements. This minimum-phase behavior of room reflections helps to simplify the deconvolution process.

Authors: Bauman, Paul D.; Lipshitz, Stanley P.; Vanderkooy, John
Affiliation: University of Waterloo, Waterloo, Ontario, Canada
AES Convention: 79 (October 1985) Paper Number: 2302
Publication Date: October 1, 1985
Subject: Transducers

Click to purchase paper as a non-member or you can login as an AES member to see more options.

No AES members have commented on this paper yet.

Subscribe to this discussion

To be notified of new comments on this paper you can subscribe to this RSS feed. Forum users should login to see additional options.

Start a discussion!

If you would like to start a discussion about this paper and are an AES member then you can login here:
Username:
Password:

If you are not yet an AES member and have something important to say about this paper then we urge you to join the AES today and make your voice heard. You can join online today by clicking here.