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

Controlling the Mode Excitation of Rooms by using Multiple Low Frequency Cardioids in Multichannel Systems

Document Thumbnail

Even excitation of room modes is prerequisite to a balanced low frequency transfer characteristic. The spatially distribution of low frequency sources in multi channel systems yields complex mode excitation patterns. The positioning and adjustment of the relative phase of the main speakers to a “single” LFE is addressed in order to achieve a good summation. Finally, large listening areas combined with a well-balanced transfer characteristic are expected in modern multi channel applications. This study presents solutions by means of using multiple low frequency cardioids to improve the room transfer characteristic. Of particular interest are possible consequences on the decay times of individual modes as well as the signal summation of LFE and main speakers. Further investigations relate to the number of low frequency cardioids and how they relate to the spatial variation of the transfer characteristic in the room.

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