Impact of impedance mismatch on crosstalk cancellation with micro-speaker arrays
Impact of impedance mismatch on crosstalk cancellation with micro-speaker arrays
Crosstalk Cancellation (CTC) is an audio technology designed to deliver binaural sound from loudspeaker arrays. Recently, its application has been extended to portable devices with miniature loudspeakers, hereafter referred to as micro-speakers. This paper investigates the effect of manufacturing inconsistencies causing variations in microspeaker characteristics on CTC performance using numerical simulations. A lumped element model, based on measured electrical impedance of several identical microspeakers, is used as the transfer functions between the array input signals and the loudspeaker diaphragm velocity. This, together with a rigid sphere acoustic head model or measured Head-Related Transfer Functions (HRTFs), is used to simulate the pressure signals at the listener’s ears. Key findings reveal the sensitivity of CTC to specific parameter variations.
Veronesi, Francesco
e8790129-89f4-4f8b-8a28-9a337df98b69
Hollebon, Jacob
75e4dd71-cfb5-4d28-82a5-7ee1bee73207
23 June 2025
Veronesi, Francesco
e8790129-89f4-4f8b-8a28-9a337df98b69
Hollebon, Jacob
75e4dd71-cfb5-4d28-82a5-7ee1bee73207
Veronesi, Francesco, Fazi, Filippo and Hollebon, Jacob
(2025)
Impact of impedance mismatch on crosstalk cancellation with micro-speaker arrays.
Forum Acusticum Euronoise 2025, Malaga, Spain.
23 - 26 Jun 2025.
8 pp
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
Crosstalk Cancellation (CTC) is an audio technology designed to deliver binaural sound from loudspeaker arrays. Recently, its application has been extended to portable devices with miniature loudspeakers, hereafter referred to as micro-speakers. This paper investigates the effect of manufacturing inconsistencies causing variations in microspeaker characteristics on CTC performance using numerical simulations. A lumped element model, based on measured electrical impedance of several identical microspeakers, is used as the transfer functions between the array input signals and the loudspeaker diaphragm velocity. This, together with a rigid sphere acoustic head model or measured Head-Related Transfer Functions (HRTFs), is used to simulate the pressure signals at the listener’s ears. Key findings reveal the sensitivity of CTC to specific parameter variations.
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ForumAcusticum2025_Veronesi_et_al
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Published date: 23 June 2025
Venue - Dates:
Forum Acusticum Euronoise 2025, Malaga, Spain, 2025-06-23 - 2025-06-26
Identifiers
Local EPrints ID: 502743
URI: http://eprints.soton.ac.uk/id/eprint/502743
PURE UUID: 353aca44-b372-401f-a100-19c1c8cd50de
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Date deposited: 07 Jul 2025 16:50
Last modified: 08 Jul 2025 02:09
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Contributors
Author:
Francesco Veronesi
Author:
Filippo Fazi
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