Can You Tell Someone's Age Just by Their Voice? New Research Reveals Why

Have you ever answered the phone and instantly thought, "That sounds like an older person" or "They sound really young"?

Most of us make these assumptions without even realising it. Within seconds of hearing someone speak, our brains are gathering clues about who they are, how they're feeling and even roughly how old they might be.

But how accurate are we? And what exactly changes in our voice as we age?

A fascinating new study has shed light on why some voices sound older than others and revealed that our voices don't age quite as gradually as you might expect.

Our voices don't seem to age little by little

Researchers followed recordings of one speaker over an incredible 50-year period to understand how people perceive age through the voice.

Surprisingly, listeners didn't notice a gradual ageing process. Instead, the speaker's voice sounded remarkably similar throughout much of his 50s and 60s. Then, around his late 60s, people suddenly began recognising his voice as sounding older.

Rather than a slow, steady change, the research suggests our voices may reach something of a "tipping point" where age-related changes become much more noticeable.

Why does our voice change?

Just like the rest of the body, the structures involved in producing speech naturally change over time.

As we get older:

• the vocal folds lose strength and flexibility

• breathing muscles become less powerful

• lung capacity gradually reduces

• speech may become a little slower

• pauses for breath may become more frequent

• voices can become rougher, breathier or less steady.

For many years, however, our bodies compensate remarkably well. The muscles involved in speaking adapt, allowing us to communicate clearly despite these gradual changes.

It's only when several of these changes begin occurring together that other people start to notice the difference.

It's about communication, not just age

Interestingly, the researchers found that people aren't necessarily judging someone's age directly.

Instead, we're subconsciously listening for how easy a voice is to understand.

A slower speaking rate, a breathier quality or a slightly less steady voice can all influence our perception, even if the person is otherwise healthy.

In other words, our brains seem to recognise changes in communication rather than simply counting the passing years.

Can you keep your voice healthy as you age?

Although ageing is inevitable, there are plenty of ways to help maintain a healthy voice.

These include:

• staying well hydrated

• avoiding smoking

• protecting your hearing

• managing acid reflux if it affects your throat

• using your voice sensibly if you rely on it professionally

• seeking advice if you notice persistent changes to your voice.

If your voice changes suddenly, becomes hoarse for more than three weeks, or you develop swallowing difficulties or pain when speaking, it's important to seek medical advice.

Looking after your hearing matters too

Our hearing and our voice are more closely connected than many people realise.

When hearing becomes more difficult, we naturally alter the way we speak. Equally, changes in the voice can sometimes make communication more challenging, particularly in noisy environments.

At The Hearing Clinic, we understand that good communication depends on much more than simply hearing sounds. If you've noticed changes in your hearing, or you're finding conversations becoming more difficult, our experienced team is here to help. A comprehensive hearing assessment can identify any underlying hearing loss and ensure you continue enjoying clear, confident communication for years to come.

Source

This blog is inspired by the research article "How We Hear Age in the Human Voice" by Mark L. Berardi, Sarah Hargus Ferguson, Eric J. Hunter and Benjamin V. Tucker, published in Acoustics Today (Spring 2026). Readers interested in the full scientific paper can read the original article on the Acoustical Society of America's website.