Corporate narration needs consistent terminology more than it needs a particular tone. Pronunciation dictionaries fix brand and product names once, so every module in a library matches the first one.
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Narration is the one job where a voice has to hold up for hours rather than seconds. 163 of the 244 voices here carry the narration tag, the largest group in the catalog, across English, Hindi and nine other Indic languages.
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Model Specifications
Streaming transports
Output formats
Speed range
Sample rate
Latency
Drawn from two working pools
There is no professional tag, so this set comes from the educational and Voice Agent groups, which between them cover the contexts where a composed register matters. Twenty two voices carry one of those tags. Selection within them rests on listening rather than on any documented attribute.
Pace over character
Speed, adjustable from 0.5 to 2.0, is the only delivery control. For corporate narration a setting slightly below 1.0 reads as more measured. There is no tone parameter, so a voice cannot be made to sound more formal after the fact.
Terminology consistency
Corporate material repeats brand names, product names and acronyms constantly, and inconsistency across a library is more noticeable than any individual mispronunciation. Pronunciation dictionaries fix each term once so every generation matches, which matters more for recurring material than for one off scripts.
Consistency across a long script
Requests cap at 250 characters, so a quarterly presentation or training script is assembled from many calls. Keeping voice, speed and sample rate fixed across the whole run removes most variation, but generating a full section and listening across the joins is still worth doing before committing.
Similar to
Professional Voices
Serious Voices
For compliance and legal reads the goal is that exact wording lands, not that the voice sounds grave. A speed near 0.9 improves intelligibility more than any casting choice.
Authoritative Voices
Slowing down reads as more authoritative than speeding up. A setting near 0.9 does more than any voice choice, and short declarative sentences carry more weight than qualified ones.
Conversational Voices
One hundred and ninety five voices carry the conversational tag, 84 percent of the catalog. Streaming is what makes them feel live: audio begins playing before the sentence has finished rendering.
Mature Voices
Eighty six voices are tagged mature, and twenty also carry the narrative tag. That overlap is the usual starting point for audiobooks and documentary work, where consistency shows over hours rather than seconds.
AI Voices for E-Learning
Course audio has to sound the same in module ten as in module one. These voices hold consistent across sessions, handle technical vocabulary through pronunciation dictionaries, and cover nine Indic languages alongside English.
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IVR prompts are written once and heard thousands of times, which makes them worth getting right and expensive to re-record. Generating them takes about a second each and costs nothing to revise.
