---
_id: '65606'
abstract:
- lang: eng
  text: Sound capture by microphone arrays opens the possibility to exploit spatial,
    in addition to spectral, information for diarization and signal enhancement, two
    important tasks in meeting transcription. However, there is no one-to-one mapping
    of positions in space to speakers if speakers move. Here, we address this by proposing
    a novel joint spatial and spectral mixture model, whose two submodels are loosely
    coupled by modeling the relationship between speaker and position index probabilistically.
    Thus, spatial and spectral information can be jointly exploited, while at the
    same time allowing for speakers speaking from different positions. Experiments
    on the LibriCSS data set with simulated speaker position changes show great improvements
    over tightly coupled subsystems.
author:
- first_name: Adrian Tobias
  full_name: Meise, Adrian Tobias
  id: '79268'
  last_name: Meise
- first_name: Tobias
  full_name: Cord-Landwehr, Tobias
  id: '44393'
  last_name: Cord-Landwehr
- first_name: Christoph
  full_name: Boeddeker, Christoph
  id: '40767'
  last_name: Boeddeker
- first_name: Marc
  full_name: Delcroix, Marc
  last_name: Delcroix
- first_name: Tomohiro
  full_name: Nakatani, Tomohiro
  last_name: Nakatani
- first_name: Reinhold
  full_name: Haeb-Umbach, Reinhold
  id: '242'
  last_name: Haeb-Umbach
citation:
  ama: 'Meise AT, Cord-Landwehr T, Boeddeker C, Delcroix M, Nakatani T, Haeb-Umbach
    R. Loose Coupling of Spectral and Spatial Models for Multi-Channel Diarization
    and Enhancement of Meetings in Dynamic Environments. In: <i>ICASSP 2026 - 2026
    IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)</i>.
    IEEE; 2026. doi:<a href="https://doi.org/10.1109/icassp55912.2026.11463540">10.1109/icassp55912.2026.11463540</a>'
  apa: Meise, A. T., Cord-Landwehr, T., Boeddeker, C., Delcroix, M., Nakatani, T.,
    &#38; Haeb-Umbach, R. (2026). Loose Coupling of Spectral and Spatial Models for
    Multi-Channel Diarization and Enhancement of Meetings in Dynamic Environments.
    <i>ICASSP 2026 - 2026 IEEE International Conference on Acoustics, Speech and Signal
    Processing (ICASSP)</i>.  2026 IEEE International Conference on Acoustics, Speech
    and Signal Processing (ICASSP) , Barcelona. <a href="https://doi.org/10.1109/icassp55912.2026.11463540">https://doi.org/10.1109/icassp55912.2026.11463540</a>
  bibtex: '@inproceedings{Meise_Cord-Landwehr_Boeddeker_Delcroix_Nakatani_Haeb-Umbach_2026,
    title={Loose Coupling of Spectral and Spatial Models for Multi-Channel Diarization
    and Enhancement of Meetings in Dynamic Environments}, DOI={<a href="https://doi.org/10.1109/icassp55912.2026.11463540">10.1109/icassp55912.2026.11463540</a>},
    booktitle={ICASSP 2026 - 2026 IEEE International Conference on Acoustics, Speech
    and Signal Processing (ICASSP)}, publisher={IEEE}, author={Meise, Adrian Tobias
    and Cord-Landwehr, Tobias and Boeddeker, Christoph and Delcroix, Marc and Nakatani,
    Tomohiro and Haeb-Umbach, Reinhold}, year={2026} }'
  chicago: Meise, Adrian Tobias, Tobias Cord-Landwehr, Christoph Boeddeker, Marc Delcroix,
    Tomohiro Nakatani, and Reinhold Haeb-Umbach. “Loose Coupling of Spectral and Spatial
    Models for Multi-Channel Diarization and Enhancement of Meetings in Dynamic Environments.”
    In <i>ICASSP 2026 - 2026 IEEE International Conference on Acoustics, Speech and
    Signal Processing (ICASSP)</i>. IEEE, 2026. <a href="https://doi.org/10.1109/icassp55912.2026.11463540">https://doi.org/10.1109/icassp55912.2026.11463540</a>.
  ieee: 'A. T. Meise, T. Cord-Landwehr, C. Boeddeker, M. Delcroix, T. Nakatani, and
    R. Haeb-Umbach, “Loose Coupling of Spectral and Spatial Models for Multi-Channel
    Diarization and Enhancement of Meetings in Dynamic Environments,” presented at
    the  2026 IEEE International Conference on Acoustics, Speech and Signal Processing
    (ICASSP) , Barcelona, 2026, doi: <a href="https://doi.org/10.1109/icassp55912.2026.11463540">10.1109/icassp55912.2026.11463540</a>.'
  mla: Meise, Adrian Tobias, et al. “Loose Coupling of Spectral and Spatial Models
    for Multi-Channel Diarization and Enhancement of Meetings in Dynamic Environments.”
    <i>ICASSP 2026 - 2026 IEEE International Conference on Acoustics, Speech and Signal
    Processing (ICASSP)</i>, IEEE, 2026, doi:<a href="https://doi.org/10.1109/icassp55912.2026.11463540">10.1109/icassp55912.2026.11463540</a>.
  short: 'A.T. Meise, T. Cord-Landwehr, C. Boeddeker, M. Delcroix, T. Nakatani, R.
    Haeb-Umbach, in: ICASSP 2026 - 2026 IEEE International Conference on Acoustics,
    Speech and Signal Processing (ICASSP), IEEE, 2026.'
conference:
  location: Barcelona
  name: ' 2026 IEEE International Conference on Acoustics, Speech and Signal Processing
    (ICASSP) '
date_created: 2026-05-11T14:20:48Z
date_updated: 2026-05-11T15:37:36Z
department:
- _id: '54'
doi: 10.1109/icassp55912.2026.11463540
external_id:
  arxiv:
  - https://arxiv.org/abs/2601.16077
keyword:
- mixture models
- meeting processing
- diarization
- source separation
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/pdf/2601.16077
oa: '1'
publication: ICASSP 2026 - 2026 IEEE International Conference on Acoustics, Speech
  and Signal Processing (ICASSP)
publisher: IEEE
status: public
title: Loose Coupling of Spectral and Spatial Models for Multi-Channel Diarization
  and Enhancement of Meetings in Dynamic Environments
type: conference
user_id: '79268'
year: '2026'
...