An AI voice for your phone system
Greeting, IVR menu, hold message, closing announcement, voicemail: these are short texts that change often and have to be flawless. That is exactly what a synthetic voice does well, in a few minutes, without booking a studio.
The messages of a phone system, one by one
The greeting ("Thank you for calling…"), the menu ("For sales, press 1"), the hold message ("An advisor will be with you shortly"), opening hours and exceptional closures, the out-of-hours voicemail. Each message lives in its own file, so you only redo one when a detail changes. A full set of ten messages is about 2,000 characters; the counting rule, spaces and punctuation included, is explained in the FAQ.
Writing for the phone
On the phone, the listener cannot re-read. One idea per sentence, short sentences, the essential information first. Write numbers the way you would dictate them, "zero one, forty-two…", and hours in words, "from nine to six", so the voice lays them down slowly. Repeat the key information at the end of the message: the callback number, the address, the reopening time. Test each sentence with the free trial, two sentences with no account: that is exactly the size of a greeting.
Choose a calm tone
A phone system does not need enthusiasm, it needs clarity. Paul Neutral or Jane Neutral in English, Marie Neutre in French, give the steady, reassuring voice people expect on the line. Listen to the samples on the voices page, all reading the same text, and keep one voice for every message of the same system: the caller should feel there is a single person speaking. How the engine works and where it falls short is described on the AI voice generator page.
A bilingual greeting
For international callers, chain English then French in the same message, or offer a language choice in the menu. Generate each language with its native voice, Paul, Oliver or Jane for English, Marie for French, and join the two files: an English voice reading French, or the reverse, is audible at once. Both catalogues are described on the text to speech page.
The right format for your installation
Most PBX, IP-PBX and VoIP services accept WAV, often mono at a sample rate of 8 or 16 kHz. Aievalu exports MP3 and WAV; if your installation requires a specific rate, a free converter such as Audacity or ffmpeg does the conversion in one command. Check your provider's documentation before uploading, and keep the original WAV: files stay in your history for 90 days, as the retention FAQ explains.
Update in minutes, not weeks
Exceptional closure, new number, summer hours: you open the studio, change one sentence, regenerate the message in the same voice and replace the file. Where a recording session has to be scheduled and invoiced, an update takes as long as the typing. It is also what makes a different message per branch or per season realistic.
What it costs
A full set of ten messages, about 2,000 characters, costs €0.18 with the €9 pack of 100,000 characters, valid for twelve months. In other words, one pack covers years of updates for a company, or dozens of phone systems for an installer. Prices are on the pricing page, in euros with no VAT applicable, and commercial use comes with paid credits, as the FAQ on usage rights reminds.
One obligation not to forget
If your calls are recorded, the law requires you to tell the caller at the start of the call. That obligation is about the recording, not the synthetic voice: the AI voice can carry the announcement, but it is up to you to include it in the message. For longer formats with the same discipline in writing, see the e-learning voice-over page; for long-form narration, the audiobook voice-over page.