Real-time implementation of a linear-phase octave graphic equalizer

Valeria Bruschi, Stefania Cecchi, Alessandro Nicolini, Vesa Välimäki

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

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Abstract

This paper proposes a real-time implementation of a linear-phase octave graphic equalizer (GEQ), previously introduced by the same authors. The structure of the GEQ is based on interpolated finite impulse response (IFIR) filters and is derived from a single prototype FIR filter. The low computational cost and small latency make the presented GEQ suitable for real-time applications. In this work, the GEQ has been implemented as a plugin of a specific software, used for real-time tests. The performance of the equalizer has been evaluated through subjective tests, comparing it with a filterbank equalizer. For the tests, four standard equalization curves have been chosen. The experimental results show promising outcomes. The result is an accurate real-time-capable linear-phase GEQ with a reasonable latency.
Original languageEnglish
Title of host publicationProceedings of the 27th International Conference on Digital Audio Effects (DAFx24)
EditorsE. De Sena, J. Mannall
Place of PublicationGuildford, UK
PublisherUniversity of Surrey
Pages459-466
Number of pages8
Volume27
Publication statusPublished - 3 Sept 2024
MoE publication typeA4 Conference publication
EventInternational Conference on Digital Audio Effects - University of Surrey, Guildford, United Kingdom
Duration: 3 Sept 20247 Sept 2024
Conference number: 27
https://dafx24.surrey.ac.uk/

Publication series

NameProceedings of the International Conference on Digital Audio Effects
ISSN (Electronic)2413-6689

Conference

ConferenceInternational Conference on Digital Audio Effects
Abbreviated titleDAFX
Country/TerritoryUnited Kingdom
CityGuildford
Period03/09/202407/09/2024
Internet address

Keywords

  • Audio signal processing
  • digital filters
  • equalization

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  • Valeria Bruschi

    Välimäki, V. (Host) & Liski, J. (Host)

    13 Sept 202117 Dec 2021

    Activity: Hosting a visitor typesHosting an academic visitor

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