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
Time-Quantized Frequency Modulation, Time-Domain Dither, Dispersive Codes, and Parametrically Controlled Noise Shaping in SDM
Time-domain quantization (TDQ) and noise shaping applied to linear frequency modulation (LFM) offers an alternative although unconventional means of generating uniformly sampled 1-bit code with characteristics similar to that generated by feedback sigma-delta modulation (SDM). Fundamental insight into the SDM process emerges by exploiting the relationship between uniform quantization and phase modulation. Linearity and output noise spectra are benchmarked against linear pulse-code modulation (LPCM) and error spectra derived by comparing 1-bit SDM against an identical feedback loop but without quantization. Sony FF class SDM is discussed and an example is shown to achieve almost noiseless performance from 0 Hz to 30 kHz by incorporating parametrically determined noise shaping stabilized by step-back in time closed-loop control.
Click to purchase paper or login as an AES member. If your company or school subscribes to the AES Journal then you can look for this paper in the institutional version of the Online Journal. 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.