| 属性 | 取值 | 默认值 |
|---|---|---|
| voice-volume | <number> | <percentage> | silent | x-soft | soft | medium | loud | x-loud | inherit | medium |
| voice-balance | <number> | left | center | right | leftwards | rightwards | inherit | center |
| speak | none | normal | spell-out | digits | literal-punctuation | no-punctuation | inherit | normal |
| pause-before, pause-after | <time> | none | x-weak | weak | medium | strong | x-strong | inherit | implementation dependent |
| pause | [ <'pause-before'> || <'pause-after'> ] | inherit | implementation dependent |
| rest-before, rest-after | <time> | none | x-weak | weak | medium | strong | x-strong | inherit | implementation dependent |
| rest | [ <'rest-before'> || <'rest-after'> ] | inherit | implementation dependent |
| cue-before, cue-after | <uri> [<number> | <percentage> | silent | x-soft | soft | medium | loud | x-loud] | none | inherit | none |
| cue | [ <'cue-before'> || <'cue-after'> ] | inherit | not defined for shorthand properties |
| mark-before, mark-after | <string> | none |
| mark | [ <'mark-before'> || <'mark-after'> ] | not defined for shorthand properties |
| voice-family | [[<specific-voice> | [<age>] <generic-voice>] [<number>],]* [<specific-voice> | [<age>] <generic-voice>] [<number>] | inherit | implementation dependent |
| voice-rate | <percentage> | x-slow | slow | medium | fast | x-fast | inherit | implementation dependent |
| voice-pitch | <number> | <percentage> | x-low | low | medium | high | x-high | inherit | medium |
| voice-pitch-range | <number> | x-low | low | medium | high | x-high | inherit | implementation dependent |
| voice-stress | strong | moderate | none | reduced | inherit | moderate |
| voice-duration | <time> | implementation dependent |
| phonemes | <string> | implementation dependent |

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