We present a time-varying linear equalization algorithm whose purpose is to protect a loudspeaker from damage under high drive conditions. It is suitable for implementation on a low-cost digital signal processor, often integrated on the same die as a high-performance audio codec. A typical application is in a portable wireless (e.g., Bluetooth) loudspeaker. For a given driver and enclosure design, the algorithm allows the power output of the loudspeaker to be maximized while introducing only minimal coloration or distortion. During the loudspeaker design phase, the parameters of the algorithm can be easily tuned by the designer, further optimizing the overall design for power output, robustness, and low distortion.

Authors: Painter, Christopher; Soltanmohammadi, Erfan; Jain, Kapil
Affiliations: Marvell Semiconductor, Inc., Longmont, CO, USA; Marvell Semiconductor, Inc., Santa Clara, CA, USA(See document for exact affiliation information.)
AES Convention: 140 (May 2016) Paper Number: 9561
Publication Date: May 26, 2016 Import into BibTeX
Subject: Audio Signal Processing: Audio Applications
Permalink: https://www.aes.org/e-lib/browse.cfm?elib=18259

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: (CD 140Papers)   /conv/140/9561.pdf

Start a discussion about this paper!