If you are a NewscasterVocalizer PRO user and you Upgraded to NewscasterVocalizer Agency can add voice customization by adding SSML Tags/Codes inside there Script Text file.
Speech Synthesis Markup Language or SSML allow for more customization in your audio response by providing details on pauses, and audio formatting for acronyms, dates, times, abbreviations, or text that should be censored. Not only that by using SSML tags, you can also customize the Voice Pitch and Speaking Rate of your Speech.
There are three options for setting the value of the pitch attribute:
Relative: Specify a relative value (e.g. "low", "medium", "high", etc) where "medium" is the default pitch.
Semitones: Increase or decrease pitch by "N" semitones using "+Nst" or "-Nst" respectively. Note that "+/-" and "st" are required.
Percentage: Increase or decrease pitch by "N" percent by using "+N%" or "-N%" respectively. Note that "%" is required but "+/-" is optional.
You will find the SSML code examples on AWS Knowledge-base here: https://docs.aws.amazon.com/polly/latest/dg/supported-ssml.html
To give you an example how it works here is a shot example of SSML markup:
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<speak>
This is the default speech of NewscasterVocalizer. But I can customize the Voice Pitch and Speaking Rate using SSML tags.
<break strength="weak"/>
<prosody rate="slow" pitch="-1st"> Here is an example of slower rate and reduced pitch using SSML tag </prosody>
<break strength="weak"/>
<prosody rate="slow" pitch="-2st"> Here is another example of slower rate and lower pitch using SSML tag </prosody>
<break strength="weak"/>
<prosody rate="slow" pitch="-50%"> Here is another example of slower rate and lower pitch using SSML tag </prosody>
<break strength="weak"/>
<prosody rate="fast" pitch="+1st"> Here is an example of faster rate higher pitch using SSML tag </prosody>
<break strength="weak"/>
<prosody rate="fast" pitch="+2st"> Here is another example of faster rate higher pitch using SSML tag </prosody>
<break strength="weak"/>
<prosody rate="fast" pitch="+50%"> Here is another example of faster rate higher pitch using SSML tag </prosody>
<break strength="weak"/>
Did I just amaze you with my speech?
<emphasis level="strong"> But, </emphasis> We are not done yet. <break strength="weak"/>
This is only the beginning. <emphasis level="moderate"> Welcome to NewscasterVocalizer </emphasis>
</speak>
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Note: For your easy understanding we've marked the code parts in Blue and the speech parts in Black Bold.
Copy this code and past it on notepad. Save it as .txt format and create a speech file using this .txt file.
You will get a speech file like the attached speech file.
IMPORTANT NOTE: Neural and Newscaster voice-overs don't support some SSML tags including these Pitch Shift and Speaking Rate customization as they are already Synthesized. You need to check in AWS Knowledge-base to confirm compatibility of specific SSML tag for specific voice-overs.
You must have both NewscasterVocalizer PRO and NewscasterVocalizer Agency in your account.