The control and real-time software programmability of low frequency audio signals in the analog domain is inaccurate, cumbersome and expensive. In the digital domain there are issues relating to low frequency distortions, latency and design time. A fully programmable analog array IC methodology is presented which combines the benefits of DSP programmability with analog signal processing by way of a case study demonstrating software design tools and custom software configuration models. This single chip Subwoofer Conditioner solution implements a sub-sonic filter, adjustable audio compressor, Linkwitz transform filter and low pass output filter with full software control. Performance measurements of this implementation as well as further enhancements to the software models are also discussed.

Authors: Macbeth, Ian; Roberts, Tegid
Affiliations: Anadigm Ltd, Crewe, Cheshire, UK ; Cadarn Consulting Ltd, Eynsham, Oxfordshire, UK(See document for exact affiliation information.)
AES Convention: 117 (October 2004) Paper Number: 6282
Publication Date: October 1, 2004 Import into BibTeX
Subject: Signal Processing
Permalink: https://www.aes.org/e-lib/browse.cfm?elib=12939

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 117Papers)   /117/6282.pdf

Start a discussion about this paper!