Journal Forum

Synthetic Reverberator - January 1960

Sound Board: High-Resolution Audio - October 2015

Synchronized Swept-Sine: Theory, Application, and Implementation - October 2015

Access Journal Forum

AES E-Library

Multichannel Matrix Surround Decoders for Two-Eared Listeners

Document Thumbnail

Film surround matrix decoders are primarily 4-channel devices with, in some cases, a decorrelation circuit to make the single rear channel sound less monaural. Conventional decoders with multiple rear output channels suffer from low separation during music and environmental effects, which is most of the time in a film. Current decoders also suffer from various defects, such as pumping of the music during dialog. This paper discusses a mathematical design method for producing a matrix decoder with optimal properties-maximum rear channel separation during music, accurate placement of directionally encoded material, and constant music level in the presence of any directionally encoded effect. The design of a 5-channel encoder is also presented. This encoder in combination with a 5- or 7-channel decoder reproduces 5-channel discrete films with very little subjective loss. In fact, playback through the 7-channel decoder (with 4 rear channels) is sometimes subjectively preferable to 5-channel discrete reproduction.

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