A Time–Frequency Integrated Framework for Frequency-Invariant Beamforming in Loudspeaker Arrays

Pan K, Tian X, Cong N, Yang J. A Time–Frequency Integrated Framework for Frequency-Invariant Beamforming in Loudspeaker Arrays. In: Convention Paper. Audio Engineering Society; 2026. Paper 10284. Available from: https://aes.org/publications/elibrary-page/?id=23222

@inproceedings{Pan2026_23222,
  author = {Pan, Keyu and Tian, Xing and Cong, Ning and Yang, Jianbin},
  title = {{A Time–Frequency Integrated Framework for Frequency-Invariant Beamforming in Loudspeaker Arrays}},
  note = {Paper 10284},
  year = {2026},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=23222}
}

TY  - CPAPER
TI  - A Time–Frequency Integrated Framework for Frequency-Invariant Beamforming in Loudspeaker Arrays
AU  - Pan, Keyu
AU  - Tian, Xing
AU  - Cong, Ning
AU  - Yang, Jianbin
M1  - Paper 10284
PY  - 2026
DA  - 2026/05/28
UR  - https://aes.org/publications/elibrary-page/?id=23222
PB  - Audio Engineering Society
LA  - en
AB  - Loudspeaker array beamforming technology has been widely used; however, current frequency-domain and time-domain design methods for calculating FIR filters face challenges, including the need for modeling delay and high computational complexity. To address these issues, this paper proposes a timefrequency integrated framework. This framework supports both pressure matching and amplitude matching methods, enabling not only the realization of traditional superdirective beams but also the design of frequency-invariant beams. For the nonlinear optimization problem in amplitude matching, an efficient solving algorithm based on the Alternating Direction Method of Multipliers (ADMM) is introduced. Experimental results demonstrate that the proposed method combines the advantages of existing frequency-domain and time-domain approaches, directly computing FIR filter coefficients without delay modeling while maintaining high computational efficiency. This provides an effective solution for beam control in loudspeaker arrays.
ER  -