All resistors generate white (Johnson-Nysquist) noise based on their value and temperature; they can also generate several other types of (excess) noise. The amount or characteristics of a resistor’s excess noise could be one factor contributing to variations in perceived sound quality. This research explores methods for measuring the Johnson-Nysquist and excess noise of different resistors with the hopes of quantifying the performance of the components under test. A methodology is proposed for evaluating the audibility of both Johnson-Nysquist and excess noise that requires no special measurement equipment, only a sound system with suitable computer and freely available software.
LaMacchia, Brewster; Swanson, Bradford
Affiliations: Clockworks Signal Processing LLC, Andover, MA, USA; Tufts University, Medford, MA, USA(See document for exact affiliation information.)
AES Convention: 145 (October 2018) eBrief:486
Publication Date: October 7, 2018
Subject: Posters: Applications in Audio
Download Now (792 KB)
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.