Active Acoustic Equalization: Performance Bounds for Time-Invariant Systems

Konferenz: Speech Communication - 14th ITG Conference
29.09.2021 - 01.10.2021 in online

Tagungsband: ITG-Fb. 298: Speech Communication

Seiten: 5Sprache: EnglischTyp: PDF

Persönliche VDE-Mitglieder erhalten auf diesen Artikel 10% Rabatt

Hilgemann, Florian; Fabry, Johannes; Jax, Peter (Institute of Communication Systems, RWTH Aachen University, Germany)

In times of rising noise pollution, the demand for active noise control (ANC) in hearable devices continues to increase rapidly. To date, time-invariant feedforward systems constitute a favorable option for their implementation. Recently, active acoustic equalization (AAE) was proposed as a generalization to the feedforward design problem. It facilitates the design of digital filters for various use-cases including ANC- and hear-through-applications. In this contribution, we analyze performance bounds of time-invariant AAE systems and discuss their implications. We build upon techniques which are established in the field of ANC to provide estimates for arbitrary use-cases. The approach facilitates an isolated analysis of individual aspects such as transfer path variance and processing delay.