Investigation of a new method for sound generation – Advanced Digital Sound Reconstruction

Dominik Mayrhofer*, Manfred Kaltenbacher

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

The current loudspeaker market has a high demand for portable audio devices. Hence, the miniaturization of loudspeakers (microspeakers) is of great importance for manufacturers. Traditional loudspeakers – for example the electrodynamic loudspeaker – are the forerunners, but so-called MEMS loudspeakers (Micro-Electro-Mechanical-System) have emerged recently. MEMS devices have already been used for sensors (i.e., microphones) to a great extend due to their advantages regarding form factor and production efficiency. Albeit additional challenges for actuators like moving enough air with a microstructure – as it is the case for a loudspeaker – the usage of MEMS technology for loudspeakers is very attractive. Since especially low-frequency audio signals often pose problems for microspeakers, this article focuses on a new sound generation technique called Advanced Digital Sound Reconstruction (ADSR) which is especially well-suited for low-frequency audio signals since ADSR can generate more volume displacement relative to its size. Based on a general description of the principle, an outlook of the possibilities regarding achievable sound pressure compared to the classical excitation scheme is derived. Furthermore, measurements are presented, which aim to prove the concept of ADSR based on already existing actuators.

Translated title of the contributionUntersuchung einer neuen Methode zur Schallerzeugung – Erweiterte digitale Schallrekonstruktion
Original languageEnglish
Journale&i - Elektrotechnik und Informationstechnik
DOIs
Publication statusPublished - 25 Mar 2021

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Investigation of a new method for sound generation – Advanced Digital Sound Reconstruction'. Together they form a unique fingerprint.

Cite this