Signal-Adaptive and Perceptually Optimized Sound Zones with Variable Span Trade-Off Filters
| Autor: | Jesper Kjaer Nielsen, Mads Græsbøll Christensen, Taewoong Lee |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Masking Effect
Adaptive control Acoustics and Ultrasonics Computational complexity theory Sound Zones Computer science Acoustics media_common.quotation_subject Automatic frequency control MUSHRA Signal Human Auditory System Computational Mathematics Adaptive Control Audio and Speech Processing (eess.AS) Distortion FOS: Electrical engineering electronic engineering information engineering Computer Science (miscellaneous) Contrast (vision) Variable Span Trade-Off Filter Loudspeaker Electrical and Electronic Engineering Electrical Engineering and Systems Science - Audio and Speech Processing media_common |
| Zdroj: | Lee, T, Nielsen, J K & Christensen, M G 2020, ' Signal-Adaptive and Perceptually Optimized Sound Zones with Variable Span Trade-Off Filters ', IEEE/ACM Transactions on Audio, Speech, and Language Processing, vol. 28, 9153915, pp. 2412-2426 . https://doi.org/10.1109/TASLP.2020.3013397 |
| DOI: | 10.1109/TASLP.2020.3013397 |
| Popis: | Creating sound zones has been an active research field since the idea was first proposed. So far, most sound zone control methods rely on either an optimization of physical metrics such as acoustic contrast and signal distortion or a mode decomposition of the desired sound field. By using these types of methods, approximately 15 dB of acoustic contrast between the reproduced sound field in the target zone and its leakage to other zone(s) has been reported in practical set-ups, but this is typically not high enough to satisfy the people inside the zones. In this paper, we propose a sound zone control method shaping the leakage errors so that they are as inaudible as possible for a given acoustic contrast. The shaping of the leakage errors is performed by taking the time-varying input signal characteristics and the human auditory system into account when the loudspeaker control filters are calculated. We show how this shaping can be performed using variable span trade-off filters, and we show theoretically how these filters can be used for trading signal distortion in the target zone for acoustic contrast. The proposed method is evaluated based on physical metrics such as acoustic contrast and perceptual metrics such as STOI. The computational complexity and processing time of the proposed method for different system set-ups are also investigated. Lastly, the results of a MUSHRA listening test are reported. The test results show that the proposed method provides more than 20% perceptual improvement compared to existing sound zone control methods. Accepted for publication in IEEE/ACM TRANSACTIONS ON AUDIO, SPEECH, AND LANGUAGE PROCESSING |
| Databáze: | OpenAIRE |
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