Optimize voice output with advanced features

Acapela Group is dedicated to providing voice solutions that are personalised and adapted to the context of application.

While the main technology is Text-To-Speech (TTS), which converts any written text into an audio result using pleasant and natural HQ voices, other technologies such as Concept To Speech can also be used to optimize the audio result.

A wide palette of features is available to optimize the result of the vocalization.
Here are some examples of fine-tuning that can be easily done. Discover ultra realistic text to speech potential with Acapela voices.

Add vocal smileys for enhanced expressiveness!


Phonetic Tags

Nestle is pronounced \prn= n E1 s l EI \ when you’re talking about the Swiss brand.

  • Phonetic tags

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Speed Tag

You can change \rspd=60\ the speed of the voice.

  • Speed tag

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Voice Shaping Tag

You can make the voice \vct=90\ seem older, \vct=100\ or if you like, \vct=110\ younger as well.

  • voice shaping tag

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Speed Tag + VCT tag

The speed tag can come in handy, as the \vct=110\ higher pitch increases the speed, so we can \rspd=80\ counter that effect using the speed tag.

  • speed tag and VCT tag

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Spelling Tag

The spelling tag will say every single \rms=1\ letter \rms=0\ in the word.

  • Spelling tag

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Word by Word Tag

The \rmw=1\ word by word \rmw=0\ tag speaks for itself.

  • Word by word

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Pause Tag

Sometimes a short pause \pau=300\can improve the voice output.

  • Pause tag

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Alternative Selection Tag

You can change the intonation of a word if you think it doesn’t \sel=alt\ sound right.

  • Alternative selection tag

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Audio Tag

You can insert sounds, like, “Sending email to John” \aud=“pathway+filename”\

  • Audio tag

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Voice switch tag

“You have a new message from John Smith. Do you want Rod to read it?

\vce=speaker=Rod\ Hey Dave, Really Sorry, but I need to cancel our meeting this afternoon. I’ll call you later to reschedule. Cheers, John

\vce=speaker=Lily\ Would you like to respond?”

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Most of our voices include exclamations like: “ Good morning!”; “Ladies and gentlemen, your attention please!”; ” Please try again!” ; “We are approaching our destination”; “We hope to see you again soon!”; “See you soon!”; and much more.

Click HERE to access to dedicated webpage

  • Exclamations

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Voice smileys

Many of our voices include what we call Voice Smileys, Like laughter #LAUGH01# , or sneeze #SNEEZE01#

Click HERE to access to dedicated webpage

  • Voice smileys

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Expressive voices

A few of our voices come with additional emotional states, like sadness, or happiness.

For example, my friend Will, can be quite emotional. \vce=speaker=Will\

Hello, My name is Will. \vce=speaker=Will-Sad\

Sometimes I get a little bit down. #CRY01# \vce=speaker=Will-Happy\

But I can also be the life of the party! #LAUGH03#

  • Expressive Voices

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Frequently Asked Questions

  • 1. How can I add Pauses to finetune intonation and rhythm of the generated output?

  • 2. How can I combine speed and pauses tags to make the important information stand out?

  • 3. How can I use alternative selection tags to finetune the default output according to my expectations?

  • 4. How can I make sure I am using the right format (for hours, date, etc.)?

  • 5. How can I use the pronunciation editor to create a specific entry of a word such as a proper name?

  • 6. How can I use alternative transcriptions – allophone- for full satisfaction?

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