Summary
This report is a technical report summarizing the acoustic design of Acoustic Vehicle Alerting Systems (AVAS) based on the expertise of Ono Sokki Co., Ltd. (Ono Sokki) and its group company Sound One Co., Ltd. (Sound One), which specialize in noise and vibration measurement.
While the introduction of AVAS is progressing as a response to the pedestrian safety risks associated with the quietness of electric vehicles, balancing detectability, environmental harmony, and brand image is a challenge. In this report, considering these three elements as the "Impossible Trinity," evaluation data from over 1,000 listeners in five countries with acoustic physical quantities were integrated and analyzed. The results show that acceptance characteristics differ from market to market, making optimization difficult with a single specification. In AVAS design, data-driven optimization that links physical quantities with subjective evaluation is effective, and strategic sound design considering market adaptation is important.
Local Reconstruction Note
This article has been expanded from the visible local mirror text, headings, tags, image captions, tables, and related local article titles. It is presented as a reconstructed reading version, not as a hidden original document.
Evolution of research on AVAS
The source outline identifies this section as part of “A Study of AVAS (Acoustic Vehicle Alerting System) Acoustic Designs”. Based on the available local metadata, this section should be read through the lens of Audio, EV, BEV, HEV, Safety, Security and the visible introduction, figures, captions, and tables.
Technical challenges in AVAS design
The source outline identifies this section as part of “A Study of AVAS (Acoustic Vehicle Alerting System) Acoustic Designs”. Based on the available local metadata, this section should be read through the lens of Audio, EV, BEV, HEV, Safety, Security and the visible introduction, figures, captions, and tables.
The Impossible Trinity in AVAS design
The source outline identifies this section as part of “A Study of AVAS (Acoustic Vehicle Alerting System) Acoustic Designs”. Based on the available local metadata, this section should be read through the lens of Audio, EV, BEV, HEV, Safety, Security and the visible introduction, figures, captions, and tables.
Scientific approach with the Sound One Platform
The source outline identifies this section as part of “A Study of AVAS (Acoustic Vehicle Alerting System) Acoustic Designs”. Based on the available local metadata, this section should be read through the lens of Audio, EV, BEV, HEV, Safety, Security and the visible introduction, figures, captions, and tables.
Implications for AVAS design strategy: Building sound as a brand asset
The source outline identifies this section as part of “A Study of AVAS (Acoustic Vehicle Alerting System) Acoustic Designs”. Based on the available local metadata, this section should be read through the lens of Audio, EV, BEV, HEV, Safety, Security and the visible introduction, figures, captions, and tables.
Related Local Signals
Nearby records in the local archive include Taipei AMPA 2026: Foxconn’s EV Technology; Smart Energy Week 2026: Batteries and Charging; Electrified Vehicle (xEV) Sales Monthly Report (March 2026); Geely i-HEV Intelligent Hybrid Technology Presentation. These titles can be used as adjacent evidence when comparing suppliers, technologies, markets, and reporting periods.