AES E-Library

AES E-Library

Acoustic Power Based Evaluation of Loudspeaker Distortion Measurements

Document Thumbnail

Traditionally, drive-unit related distortion figures are evaluated “on-axis.” This method leads to straightforward results as long as the frequency of the analyzed distortion component stays below the driver’s modal break-up region. When the distortion component is entering the drive-unit’s break-up region an on-axis based distortion analysis approach can become difficult if not meaningless. Therefore an alternative method is proposed which makes use of acoustic harmonic distortion sound power values, instead of sound pressure levels acquired in a single observation point (on-axis). These acoustic power values are derived from high resolution directivity data for the fundamental-, 2nd- and 3rd-harmonic-distortion components. Results are shown for different kinds of drive-units and the implications are discussed.

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