Spatial timbre uniformity analysis of loudspeakers in rooms using MFCC

Takashi Minagawa, Kazuhiko Kawahara, Ryo Nakaie

Research output: Contribution to conferencePaperpeer-review

Abstract

Spatial timbre uniformity needs to be considered during public address system design using loudspeakers. In this paper, an analysis based on Mel-frequency cepstrum coefficient (MFCC) was conducted on room impulse responses produced by different loudspeakers including conventional cone loudspeakers and a Distributed Mode Loudspeaker (DML). Histograms of Euclidean distances between MFCC vectors of each impulse response was plotted for each loudspeaker. The tail of the histogram which represents the frequency of larger distances was lighter in the histogram of the DML. The results imply that the DML can avoid extreme spatial timbre dissimilarity. The proposed method introduces concept of timbre uniformity, which could be helpful for designing acoustic spaces.

Original languageEnglish
Publication statusPublished - 2020
Event149th Audio Engineering Society Convention 2020, AES 2020 - Virtual, Online
Duration: Oct 27 2020Oct 30 2020

Conference

Conference149th Audio Engineering Society Convention 2020, AES 2020
CityVirtual, Online
Period10/27/2010/30/20

All Science Journal Classification (ASJC) codes

  • Modelling and Simulation
  • Acoustics and Ultrasonics

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