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CSS 听觉参考手册

时间:2020/11/2 12:54:08  作者:  来源:  查看:0  评论:0
内容摘要:CSS 听觉参考手册CSS 选择器CSS 网络安全字体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...

CSS 听觉参考手册

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 W3C
azimuth Sets where the sound/voices should come from (horizontally)
  • angle
  • left-side
  • far-left
  • left
  • center-left
  • center
  • center-right
  • right
  • far-right
  • right-side
  • behind
  • leftwards
  • rightwards
2
cue A shorthand property for setting the cue-before and cue-after properties in one declaration
  • cue-before
  • cue-after
2
cue-after Specifies a sound to be played after speaking an element's content to delimit it from other
  • none
  • url
2
cue-before Specifies a sound to be played before speaking an element's content to delimit it from other
  • none
  • url
2
elevation Sets where the sound/voices should come from (vertically)
  • angle
  • below
  • level
  • above
  • higher
  • lower 
2
pause A shorthand property for setting the pause-before and pause-after properties in one declaration
  • pause-before
  • pause-after
2
pause-after Specifies a pause after speaking an element's content
  • time
  • %
2
pause-before Specifies a pause before speaking an element's content
  • time
  • %
2
pitch Specifies the speaking voice
  • frequency
  • x-low
  • low
  • medium
  • high
  • x-high 
2
pitch-range Specifies the variation in the speaking voice. (Monotone voice or animated voice?)
  • number
2
play-during Specifies a sound to be played while speaking an element's content
  • auto
  • none
  • url
  • mix
  • repeat
2
richness Specifies the richness in the speaking voice. (Rich voice or thin voice?)
  • number
2
speak Specifies whether content will render aurally
  • normal
  • none
  • spell-out
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
  • always
  • once
2
speak-numeral Specifies how to speak numbers
  • digits
  • continuous
2
speak-punctuation Specifies how to speak punctuation characters
  • none
  • code
2
speech-rate Specifies the speed of the speaking
  • number
  • x-slow
  • slow
  • medium
  • fast
  • x-fast
  • faster
  • slower 
2
stress Specifies the "stress" in the speaking voice
  • number
2
voice-family A prioritized list of voice family names that contain specific voices
  • specific-voice
  • generic-voice
2
volume Specifies the volume of the speaking
  • number
  • %
  • silent
  • x-soft
  • soft
  • medium
  • loud
  • x-loud 
2


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