A plain-English explanation of synthetic audio - what it is, how it is made, and where it is genuinely useful for a business, without the hype.
By Will Nash
15 July 2026
Synthetic audio is one of those terms that has started appearing in marketing conversations faster than anyone has stopped to define it. If you have heard it and nodded along without being quite sure what it covers, here is the plain version, and why it might matter for your firm.
Synthetic audio is sound, usually speech, generated or heavily shaped by software rather than recorded from a person speaking into a microphone in the usual way. That covers a spectrum: a fully computer-generated voice reading a script, a cloned version of a real person's voice, or a genuine recording cleaned up and edited by AI until it is partly synthetic. The common thread is that a machine is doing work a studio and a voice actor used to do.
What it actually includes
A few things sit under the label. Text-to-speech, where you type words and a generated voice reads them, has existed for years and has recently become far more natural. Voice cloning, where a short sample of someone's real voice is used to produce new speech in that voice. And AI-assisted editing, where a genuine recording is tidied, re-timed, or cleaned of mistakes so smoothly that the result is no longer purely a recording. Most practical uses combine these rather than being one pure type.
What it is not
It is not, on its own, a fake. A synthetic voice reading a real expert's genuine argument is no more dishonest than a ghostwritten article published under a partner's name, which firms have done for decades. It is also not automatically low quality. Early text-to-speech was flat and robotic, and that reputation has stuck, but the better tools now produce speech most listeners would not clock as generated. The technology is neutral; how you use it is what carries the ethics.
Where it is useful for a firm
For a professional-services firm, the practical appeal is turning expertise into audio without the logistics that used to make it hard. A partner's thinking can become a polished episode without booking a studio or asking a busy expert to perform. It makes producing audio regularly realistic rather than a one-off effort. That is the difference between an idea for a podcast and a podcast that actually keeps going.
Where to be careful
Two cautions. Cloning someone's voice needs their clear consent, every time, and using a real person's voice to say things they did not actually sign off on is a genuine problem, not a grey area. And synthetic audio does not lower the bar for substance: a generated voice reading weak content just delivers weak content more smoothly. The tool solves production, not whether you have anything worth saying.
In short
Synthetic audio is speech made or shaped by software rather than captured in the traditional way, spanning generated voices, cloned voices, and heavily edited recordings. Used openly and with consent, it is a practical way to turn what your experts know into audio at a realistic cadence. Used carelessly, it is a fast way to publish something hollow. As with most tools, the technology is the easy part.
If you are weighing up whether synthetic audio has a sensible place in how your firm communicates, we are happy to talk through where it fits and where it does not. Get in touch.
More on the trust side of this: Do AI-Generated Podcasts Sound Human?
