AES E-Library

AES E-Library

Filter Structures to Compensate for Nonlinear Distortions of Horn Loudspeakers

Document Thumbnail

A special transducer-oriented filter structure is presented to compensate for nonlinear distortions of a horn loudspeaker by prefiltering the electric input signal. The filter has a block-oriented filter architecture derived from the results of nonlinear loudspeaker modeling and is composed of static nonlinear and dynamic linear subsystems. This structure requires less computational effort and less memory than other generic architectures and allows compensation for the modeled nonlinear mechanisms completely. In practice, simplified versions of this filter can be implemented to compensate for dominant nonlinearities only. System identification performed on a particular horn loudspeaker provides valuable information about the dominant nonlinearity and allows adjusting the free filter parameters. The implementation of an adequate filter structure for a professional horn loudspeaker in a DSP56000 is discussed and results of the distortion reduction are presented.

AES Convention: Paper Number:
Publication Date:

Click to purchase paper as a non-member 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 $33 for non-members and is free for AES members and E-Library subscribers.

Learn more about the AES E-Library

E-Library Location:

Start a discussion about this paper!

AES - Audio Engineering Society