In this paper, an improved algorithm for natural sampling is presented that is suitable for digitally controlled fixed frequency PWM modulators. With only 5 MAC operations, 4 multiplications, and 2 additions, the algorithm calculates both switching times for double-sided 3-level PWM, and offers more than 100 dB between signal and PWM related distortion products for high fidelity audio applications. These features compare well with results published [2-6]. The algorithm can be combined with a noise shaped local feedback for quantized pulse lengths and the digital modulator can be integrated into a global feedback loop.
Authors:
Wegner, Carsten; Schwann, Robert; Ehrhardt, Dietmar
Affiliations:
CAMCO Produktions- und Vertrieb-GmbH, Wenden, Germany; Universität Siegen, Siegen, Germany(See document for exact affiliation information.)
AES Convention:
142 (May 2017)
Paper Number:
9783
Publication Date:
May 11, 2017
Subject:
Posters: Transducers, Systems, and Effects
Click to purchase paper as a non-member or you can login as an AES member to see more options.
No AES members have commented on this paper yet.
To be notified of new comments on this paper you can subscribe to this RSS feed. Forum users should login to see additional options.
If you are not yet an AES member and have something important to say about this paper then we urge you to join the AES today and make your voice heard. You can join online today by clicking here.