电视用文本语音转换.通用要求

[中文适用范围]： 本国际标准规定了具有文本转语音系统的（广播）接收器的文本转语音功能。这样的系统可以是一个设备，即具有集成文本到语音生成器的接收器，或者可以是两个设备，即与外部文本到语音设备连接的接收器。本文件仅适用于功能齐全的固定式（或半固定式）数字电视接收器，例如机顶盒、集成数字电视、录像机以及其他主要功能是接收电视内容的产品。当本文档涉及电视时，这将是所有此类接收器的简写。本文件不适用于能够将电视接收作为辅助功能的产品（例如带有数字电视接收器的个人电脑或游戏机）。它也不适用于子组件（例如 PC 调谐器卡）。 [外文原描述]： IEC 62731:2018 specifies the text-to-speech functionality for a (broadcast) receiver with a text-to-speech system. Such a system may be one device, i.e. a receiver with an integrated text-to-speech generator, or may be two devices, i.e. a receiver interfacing with an external text-to-speech device. This document applies only to completely functional stationary (or semi-stationary) digital TV receivers such as set top boxes, integrated digital TVs, recorders and other products whose primary function is to receive TV content. Where this document refers to TV, this will be shorthand for all such receivers. This document does not apply to products that are capable of receiving TV as a secondary function (e.g. PCs or game consoles with digital television receivers). It also does not apply to sub-assemblies (e.g. PC tuner cards). This edition includes the following significant technical changes with respect to the previous edition: a) in 6.2, the levels of announcement quality were revised as well as considerations for ways in which device users can provide service providers with feedback on incorrectly announced terms. b) in 6.3, the following TV functionality was added: the TV can receive updated words, associated conversions and updated conversion rules for the TTS engine via a network connection.