Simultaneous Multichannel Impulse Response Measurement Using Zadoff–Chu Sequences

Vizuete JM. Simultaneous Multichannel Impulse Response Measurement Using Zadoff–Chu Sequences. J Audio Eng Soc. 2026;74(9):688-695. doi:10.17743/jaes.2026.0290

@article{Vizuete2026_23429,
  author = {Vizuete, Joaquín Martínez},
  title = {{Simultaneous Multichannel Impulse Response Measurement Using Zadoff–Chu Sequences}},
  journal = {Journal of the Audio Engineering Society},
  volume = {74},
  number = {9},
  pages = {688--695},
  year = {2026},
  month = sep,
  publisher = {Audio Engineering Society},
  doi = {10.17743/jaes.2026.0290},
  url = {https://doi.org/10.17743/jaes.2026.0290}
}

TY  - JOUR
TI  - Simultaneous Multichannel Impulse Response Measurement Using Zadoff–Chu Sequences
AU  - Vizuete, Joaquín Martínez
T2  - Journal of the Audio Engineering Society
J2  - J. Audio Eng. Soc.
VL  - 74
IS  - 9
SP  - 688
EP  - 695
PY  - 2026
DA  - 2026/09/16
DO  - 10.17743/jaes.2026.0290
UR  - https://doi.org/10.17743/jaes.2026.0290
PB  - Audio Engineering Society
LA  - en
AB  - Based on the orthogonality of cyclically shifted Zadoff–Chu sequences, a method for the simultaneous estimation of multiple impulse responses is presented. When multiple sources excite a shared transmission medium simultaneously, the receiver captures a composite signal comprising the superimposed contributions of all active sources. By assigning cyclically shifted versions of a base sequence to each source, the individual impulse responses can be recovered from this superposition via circular deconvolution. The approach is applicable to any linear time-invariant transmission medium and supports multiple-input single-output and multireceiver measurement configurations, enabling the simultaneous estimation of a complete set of source–receiver impulse responses within a single synchronized acquisition. Experimental validation in an acoustic propagation scenario demonstrates accurate recovery of individual impulse responses under simultaneous multisource excitation.
ER  -