Mostly-Digital High Fidelity Audio | R. Peloso | PitchD 22
Channel: IEEE PoliTO Student Branch
Date: 16/10/2020

PitchD – the PhD’s pitch: our PhD IEEE Student Members explain to students, collegues and professors their research.

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Mostly-digital High Fidelity audio reproduction systems

Mr. Riccardo Peloso, Dept. of Electronics and Telecommunications (DET), Politecnico di Torino

Recent years have observed a significant rise in popularity of music streaming services. Instead of using a physical format, music is now distributed in a completely digital way. Nevertheless, on the playback phase little has changed as it remained inherently analog. It follows that to correctly reproduce a digital audio signal, it must be converted back to its analog representation. This operation has to be performed by a Digital to Analog Converter (DAC). During the conversion phase digital signals are subject to inevitable analog errors which can deteriorate the quality of the resulting output signal. In High Fidelity audio systems, which aim to be as faithful as possible to the original source, these kind of errors represent a major obstacle to overcome. Although older analog-centric DAC chips are able to partially mitigate this issue, newer digital-centric designs struggle to reach the same level of performance, as they need to cope with error related to modern transistor production processes.This talk will focus on novel smart digital algorithms capable of concealing and mitigating issues related to digital-centric DACs, while keeping cost and power consumption low.