标准摘要
[中文适用范围]: 本国际标准规定了在环境噪声低于 80 dB 的环境中确定语音通知的适当声压级范围的方法。 指定的方法遵循 ISO/IEC 指南 71 的概念,并考虑听力能力下降的老年人来确定语音通知的声压级。 本国际标准中规定的口语语音级别适用于产品和公共广播系统。 为了提高产品的可访问性和可用性,语音公告不仅必须听得见,而且必须以舒适的语音水平呈现。 语音播报的目标产品是家用电器、信息和通信技术服务等消费品,以及火车站、机场、会议室、游乐园、集市等室内外公共设施中为一般用户提供服务的产品。 。 本国际标准不适用于提供私人信息的产品,例如公共场所的自动取款机。 本国际标准适用于产生语音通知的扬声器距离用户较近且环境噪声的标准频率计权 A 的声压级不超过 80 dB 的环境。 本国际标准适用于目标产品在安静和消声条件下提供的语音通知,该语音通知对于其年龄具有正常听力的人来说是可以听到的。 本国际标准适用于录制语音和合成语音公告。 本国际标准没有规定具有自动声压级控制以补偿波动的环境噪声级的系统的语音通知的声压级。 本国际标准不适用于通过耳机或耳塞听到的语音通知,或耳朵靠近语音声源听到的语音通知,例如 IEC 60268-7 中规定的入耳式扬声器。 本国际标准仅考虑语音的可听度,而不考虑语音理解的过程。 本标准没有规定火警、煤气泄漏、预防犯罪等紧急情况下语音通知的声压级; ISO 7240-16 和 ISO 7240-19 涵盖了这些内容。 本国际标准没有规定汽车内语音广播的声压级; ISO 15006 中涵盖了这些内容。 注 1:以重复方式从家用电器等产品发出的语音通知被认为是作为听觉信号而不是作为消息被听到,因此可以使用较低的声压级本国际标准规定的口头通知。 注2:众所周知,公告语言的母语者的文字识别性能优于非母语者。 [外文原描述]: ISO 24504:2014 specifies methods to determine an appropriate sound pressure level range for spoken announcements in environments where ambient noise is less than 80 dB. The specified methods follow the concepts of ISO/IEC Guide 71 and includes consideration of older persons with decreased hearing ability to determine sound pressure levels of spoken announcements. The spoken speech levels specified are for products and public-address systems. ISO 24504:2014 is applicable when a loudspeaker producing a spoken announcement is located a short distance from the user in an environment where the sound pressure level with a standard frequency weighting A of ambient noise does not exceed 80 dB. It is applicable to spoken announcements that are audible to persons with normal hearing for their age when presented by a target product under quiet and anechoic conditions, and for both recorded voice and synthetic speech announcements. It is not applicable to products providing private information such as automated teller machines in public spaces, nor to spoken announcements heard through headphones or earphones, or with the ear close to the speech sound source such as ear speakers. It does not specify the sound pressure levels of spoken announcements for systems with automatic sound pressure level control to compensate for fluctuating ambient noise levels, nor those presented in emergency situations such as signals for fire alarms, gas leakage and crime prevention (covered in ISO 7240‑16 and ISO 7240‑19), or in automobiles (covered in ISO 15006). It considers only the audibility of speech and not the process of speech understanding.
英文名称Ergonomics — Accessible design — Sound pressure levels of spoken announcements for products and public address systems