当前位置：网页制作学习CSS2的听觉参考
文章来自:互联网 | 发表时间:2007-9-24 21:32:59
听觉样式表听觉样式表可把语音合成与音响效果相组合，使得用户可以听到信息，而不用进行阅读。
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
听觉样式表的一个例子：
h1, h2, h3, h4
{#FF0000;">
voice-family: male;#FF0000;">
richness: 80;#FF0000;">
cue-before: url(";beep.au")
}
{#FF0000;">
voice-family: male;#FF0000;">
richness: 80;#FF0000;">
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: The number in the "W3C" column indicates in which CSS recommendation the property is defined (CSS1 or CSS2).| 属性 | 描述 | 值 | W3C |
|---|---|---|---|
| azimuth | Sets where the sound/voices should come from (horizontally) |
|
2 |
| cue | A shorthand property for setting the cue-before and cue-after properties in one declaration |
|
2 |
| cue-after | Specifies a sound to be played after speaking an element's content to delimit it from other |
|
2 |
| cue-before | Specifies a sound to be played before speaking an element's content to delimit it from other |
|
2 |
| elevation | Sets where the sound/voices should come from (vertically) |
|
2 |
| pause | A shorthand property for setting the pause-before and pause-after properties in one declaration |
|
2 |
| pause-after | Specifies a pause after speaking an element's content |
|
2 |
| pause-before | Specifies a pause before speaking an element's content |
|
2 |
| pitch | Specifies the speaking voice |
|
2 |
| pitch-range | Specifies the variation in the speaking voice. (Monotone voice or animated voice?) |
|
2 |
| play-during | Specifies a sound to be played while speaking an element's content |
|
2 |
| richness | Specifies the richness in the speaking voice. (Rich voice or thin voice?) |
|
2 |
| speak | Specifies whether content will render aurally |
|
2 |
| 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 |
|
2 |
| speak-numeral | Specifies how to speak numbers |
|
2 |
| speak-punctuation | Specifies how to speak punctuation characters |
|
2 |
| speech-rate | Specifies the speed of the speaking |
|
2 |
| stress | Specifies the "stress" in the speaking voice |
|
2 |
| voice-family | A prioritized list of voice family names that contain specific voices |
|
2 |
| volume | Specifies the volume of the speaking |
|
2 |
