| ylbtech-CSS3：CSS 听觉参考手册 |
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听觉样式表
听觉样式表可把语音合成与音响效果相组合，使用户可以听到信息，而无需进行阅读。
听觉呈现可用于：
- 视觉能力低弱的人士
- 帮助用户学习阅读
- 帮助有阅读障碍的用户
- 家庭娱乐
- 在汽车中使用
听觉呈现通常会把文档转化为纯文本，然后传给屏幕阅读器（可读出屏幕上所有字符的一种程序）。
听觉样式表的一个例子：
h1, h2, h3, h4
{
voice-family: male;
richness: 80;
cue-before: url("beep.au")
}
上面的例子可以让语音合成器演奏一段声音，然后用男性的声音读出标题。
CSS2 听觉参考
W3C : "W3C" 列的数字显示出属性由哪个 CSS 标准定义（CSS1 还是 CSS2）。
| 属性 | 描述 | 值 | W3C |
|---|---|---|---|
| azimuth | Sets where the sound/voices should come from (horizontally) |
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2 |
| cue | A shorthand property for setting the cue-before and cue-after properties in one declaration |
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2 |
| cue-after | Specifies a sound to be played after speaking an element‘s content to delimit it from other |
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2 |
| cue-before | Specifies a sound to be played before speaking an element‘s content to delimit it from other |
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2 |
| elevation | Sets where the sound/voices should come from (vertically) |
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2 |
| pause | A shorthand property for setting the pause-before and pause-after properties in one declaration |
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| pause-after | Specifies a pause after speaking an element‘s content |
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| pause-before | Specifies a pause before speaking an element‘s content |
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| pitch | Specifies the speaking voice |
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| pitch-range | Specifies the variation in the speaking voice. (Monotone voice or animated voice?) |
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| play-during | Specifies a sound to be played while speaking an element‘s content |
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| richness | Specifies the richness in the speaking voice. (Rich voice or thin voice?) |
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| speak | Specifies whether content will render aurally |
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| speak-header | Specifies how to handle table headers. Should the headers be spoken before every cell, or only before a cell with a different header than the previous cell |
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| speak-numeral | Specifies how to speak numbers |
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| speak-punctuation | Specifies how to speak punctuation characters |
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| speech-rate | Specifies the speed of the speaking |
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| stress | Specifies the "stress" in the speaking voice |
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| voice-family | A prioritized list of voice family names that contain specific voices |
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| volume | Specifies the volume of the speaking |
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http://www.w3school.com.cn/cssref/css_ref_aural.asp
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作者：ylbtech 出处：http://ylbtech.cnblogs.com/ 本文版权归作者和博客园共有，欢迎转载，但未经作者同意必须保留此段声明，且在文章页面明显位置给出原文连接，否则保留追究法律责任的权利。 |
原文地址：https://www.cnblogs.com/storebook/p/9397126.html
时间： 2024-10-10 08:37:34