単一周波数の警告音は、実際の運転環境では脆弱です. 周囲の騒音によって簡単にマスキングされてしまう, 都市の背景音や会話など, while also failing to accommodate auditory variations across different age groups.
To ensure the warning successfully reaches everyone nearby, a multi-frequency design is essential:
Mid-to-low frequencies (400–800 Hz): Longer wavelengths enable effective penetration through common ambient noise and allow the sound to travel further.
Mid-to-high frequencies (1600–2500 Hz): The human ear is most sensitive to this range, helping the sound quickly catch attention.
安全を超えて, the AVAS sound can also serve as a carrier of brand identity. 例えば, BMW commissioned renowned Hollywood film composer Hans Zimmer to create a unique AVAS sound, forming a distinctive acoustic signature for the brand.
Within regulatory limits, by adding harmonics (integer multiples of the base frequency) and adjusting time envelopes, kepo can provide customized sound design services, integrating AVAS into a holistic acoustic brand strategy.
