Perceptual Effects of Dynamic Range Compression in Popular Music Recordings - January 2014
Accurate Calculation of Radiation and Diffraction from Loudspeaker Enclosures at Low Frequency - June 2013
New Measurement Techniques for Portable Listening Devices: Technical Report - October 2013
Harmonic and Intermodulation Analysis of Nonlinear Devices Used in Virtual Bass Systems
Nonlinear devices (NLD) are used in the virtual bass system. NLD generates harmonics which in turn create the pitch perception and are used in the audio bass enhancement systems using psychoacoustics. This paper presents the mathematical derivations and analyses of five different NLD devices, together with intermodulation analysis of harmonics generated by these NLDs. The five NLDs are half-wave rectifier, full-wave rectifier, square wave, polynomial function and exponential function. The derivation of harmonic analysis equations are based on Fourier Theorems, Chebyshev Polynomials, and Taylor Series expansions. Besides the harmonics, intermodulation components are also resulted from NLDs. Both mathematical analysis and simulation results are presented for the intermodulation effects of harmonics generated by NLDs.
Click to purchase paper 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 $20 for non-members, $5 for AES members and is free for E-Library subscribers.