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Table 3-2, SSML Formats for Text-to-Speech Entries
Insert Silence/Pauses • This is not <break strength='none' /> a pause.
• This is a <break strength='x-weak' /> phrase break.
• This is a <break strength='weak' /> phrase break.
• This is a <break strength='medium' /> sentence break.
• This is a <break strength='strong' /> paragraph break.
• This is a <break strength='x-strong' /> paragraph break.
• This is a <break time='3s' /> three second pause.
• This is a <break time='4500ms' /> 4.5 second pause.
• This is a <break /> sentence break.
Adjust Speech Rate • I am now <prosody rate='x-slow'>speaking at half
speed.</prosody>
• I am now <prosody rate='slow'>speaking at 2/3
speed.</prosody>
• I am now <prosody rate='medium'>speaking at normal
speed.</prosody>
• I am now <prosody rate='fast'>speaking 33% faster.</
prosody>
• I am now <prosody rate='x-fast'>speaking twice as
fast</prosody>
• I am now <prosody rate='default'>speaking at normal
speed.</prosody>
• I am now <prosody rate='.42'>speaking at 42% of nor-
mal speed.</prosody>
• I am now <prosody rate='2.8'>speaking 2.8 times as
fast</prosody>
• I am now <prosody rate='-0.3'>speaking 30% more
slowly.</prosody>
• I am now <prosody rate='+0.3'>speaking 30% faster.</
prosody>