Spatial Timbre Uniformity Analysis of Loudspeakers in Rooms Using MFCC

Minagawa T, Kawahara K, Nakaie R. Spatial Timbre Uniformity Analysis of Loudspeakers in Rooms Using MFCC. In: AES Convention 149. Audio Engineering Society; 2020. Paper 10415. Available from: https://aes.org/publications/elibrary-page/?id=20952

@inproceedings{Minagawa2020_20952,
  author = {Minagawa, Takashi and Kawahara, Kazuhiko and Nakaie, Ryo},
  title = {{Spatial Timbre Uniformity Analysis of Loudspeakers in Rooms Using MFCC}},
  booktitle = {AES Convention 149},
  note = {Paper 10415},
  year = {2020},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=20952}
}

TY  - CPAPER
TI  - Spatial Timbre Uniformity Analysis of Loudspeakers in Rooms Using MFCC
AU  - Minagawa, Takashi
AU  - Kawahara, Kazuhiko
AU  - Nakaie, Ryo
T2  - AES Convention 149
M1  - Paper 10415
PY  - 2020
DA  - 2020/10/06
UR  - https://aes.org/publications/elibrary-page/?id=20952
PB  - Audio Engineering Society
LA  - en
AB  - 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.
ER  -