AES E-Library

AES E-Library

Chaotic Modulation In PWM Digital Amplifier

Document Thumbnail

Performance of a pure digital audio amplifier using pulse width modulation (PWM) highly depends on suppression of high frequency, inaudible, components in its spectrum. Noise-like phase modulation of PWM carrier signal allows reducing of nonlinear effects in demodulation filter, and can be of advantage for EMC reasons. In this paper we propose a method of digital PWM amplifier implementation where a digital chaotic oscillator is used for carrier spreading. Modulation principle, interval modulator schematic, and chaotic oscillator structure as well as experimental results are presented.

AES Conference:
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