Journal Forum

Synthetic Reverberator - January 1960
1 comment

Multichannel Sound Reproduction Quality Improves with Angular Separation of Direct and Reflected Sounds - June 2015
1 comment

Clean Audio for TV broadcast: An Object-Based Approach for Hearing-Impaired Viewers - April 2015

Access Journal Forum

AES E-Library

Hybrid Equalization of Room for Home Theatre System

Document Thumbnail

For home theatre systems, it is necessary to equalize the room impulse responses. It is well known that the perfect inverse filtering over the entire audio frequency range is hard to be met due to the perturbations such as a listener's head movement. For securing larger 'sweet region' we measured at 18 points 3cm at regular intervals horizontally around the both ears position. We synthesize one representative impulse response of these 18 impulse responses in the position-weighted manner using principal component analysis method. We apply this representative impulse response as the target of inverse filtering. For inverse filtering we apply two different methods into two frequency ranges. In the low frequency range we realize a perfect inverse filter using least square method, in the high frequency range we realize linear phase finite impulse response inverse filter using 1/3 octave band frequency magnitude response smoothing. Using this inverse filter we can confirm well-equalized high sound quality in the entire sweet region from the result of experiment.

AES Convention: Paper Number:
Publication Date:

Click to purchase paper 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 and would like to subscribe to the E-Library then Join the AES!

This paper costs $20 for non-members, $5 for AES members and is free for E-Library subscribers.

Learn more about the AES E-Library

E-Library Location:

Start a discussion about this paper!

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