Journal Forum

Perceptual Effects of Dynamic Range Compression in Popular Music Recordings - January 2014
4 comments

Accurate Calculation of Radiation and Diffraction from Loudspeaker Enclosures at Low Frequency - June 2013
9 comments

New Measurement Techniques for Portable Listening Devices: Technical Report - October 2013
1 comment

Access Journal Forum

AES Journal Forum

Artificial Reverberation Control Using Cepstrum Decomposition While Maintaining Locations of Peaks and Dips on the Frequency Responses

Modifying the reverberations rendered from original impulse-response records is an essential three-dimensional audio technology. A nonparametric method is proposed for modifying the reverberation time, maintaining the frequency response trend (frequency locations of the spectral peeks and troughs) so that entire tonal characteristics might be preserved. The method can be interpreted to move the poles and zeros of the transfer function close to (for making reverberations longer) or far from (for shorter reverberations) the unit circle in the z plane. Exponential time windowing moves the minimum-phase zeros along the radial direction, while the pole and zero symmetrical locations of the all-pass part can be controlled after causal and noncausal cepstral decomposition. The locations of the all-pass poles can be moved by exponential windowing the time response reconstructed from the causal cepstrum component. The causal cepstrum obtained again after moving the all-pass pole locations is utilized in creating the noncausal part of the modified all-pass phase cepstrum. Rendering of the reverberation effects on the frequency response in which the frequency response trend is confirmed. Examples of frequency-dependent reverberation control applications are also given.

Authors:
Affiliation:
JAES Volume 53 Issue 12 pp. 1142-1151; December 2005
Publication Date:

Click to purchase paper 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

RSS Feed 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.

 
Facebook   Twitter   LinkedIn   Google+   YouTube   RSS News Feeds  
AES - Audio Engineering Society