---
title: How Does Voice AI Handle Background Noise?
description: How does voice AI handle noise? It separates speech from background sound in real time and rebuilds the voice, so agents and callers hear each other clearly.
image: https://www.augmentedhearing.io/hubfs/How%20Does%20Voice%20AI%20Handle%20Background%20Noise%20%E2%80%93%2020%20options-selection.png
---

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Last updated 3 November 2026

# How Does Voice AI Handle Background Noise?

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Voice AI, or as we like to call it, AI speech enhancement - handles background noise by recognising what human speech sounds like and separating it from everything else in the audio while the call is happening. Speech enhancement enhances the voice, so it sounds natural, instead of simply turning the noise down. In a contact centre, this helps the agent and the customer hear each other on both sides of the call.

A customer calls from a car with the window open and a child talking in the back seat. The agent asks for the account number once, then twice, then a third time. Every repeat makes the call longer and the conversation more tiring for both people. 

Voice AI solves this, by isolating the voice, so the agent can focus on what the caller is saying - not the noise from traffic or kids in the backseat.

## How does voice AI handle noise on a live call?

Voice AI handles noise by using a trained model to tell speech apart from other sounds and separate the two in real time. The model learns the patterns of human voices from large amounts of audio. Background noise, such as traffic, keyboards or air conditioning, follows different patterns, so the model can pull the two apart.

There are two broad ways to use that separation. Noise suppression estimates the noise and turns it down, which can leave the voice sounding muffled or as if it is under water. Speech enhancement goes further: it identifies the voice and rebuilds it, so the speech stays natural.

Sharpi, our speech enhancement technology, is trained on 25 years of audio data. Because Sharpi learns from the sounds humans make rather than from vocabulary, it recognises human speech across all languages. Sharpi also recognises all human voices, so it does not treat other people's voices as noise.

## What does it depend on?

How well voice AI handles noise depends on five practical choices.

- **Which side of the call is cleaned:** Speech enhancement can clean incoming audio, outgoing audio or both, and Sharpi is bi-directional, so it cleans what the agent hears and what the customer hears.
- **Delay:** Latency, the tiny delay between someone speaking and the other person hearing it, has to stay low, and Sharpi processes sound in real time with less than 10 ms of latency.
- **Where it runs:** Voice AI can run in the cloud or locally, and Sharpi runs on-premise and offline, does not store the audio and does not use customer data to train the AI.
- **How the background is treated:** Removing every sound is not always the goal, and with Sharpi the voice becomes clearer while the background is preserved, with the user in control of what is enhanced.
- **How it fits your setup:** Sharpi is designed to work with any softphone and supports Genesys, Five9, Microsoft Teams, Talkdesk and Aircall. We also offer [physical Sharpi boxes](https://www.augmentedhearing.io/sharpi-box), [SIP integrations](https://www.augmentedhearing.io/sharpi-sip) and [Sharpi as an app.](https://www.augmentedhearing.io/sharpi-for-phones)

## What does this mean for contact centres?

For contact centres, how voice AI handles noise decides whether the agent can understand the customer the first time. Every time an agent asks a customer to repeat a policy number, the call gets longer. Over a full shift, straining to hear also adds to the agent's listening effort.

Speech enhancement is already used at scale. According to Augmented Hearing's own figures, more than 25 million calls were handled with Sharpi in 2025. You can read more about [speech enhancement for contact centres](https://www.augmentedhearing.io/solutions/contactcenters) on our solution page.

## Frequently asked questions

### Does voice AI remove all background noise?

Voice AI does not have to remove all background noise, and often it should not. With speech enhancement, the voice becomes clearer while the background is preserved rather than deleted. Sharpi offers three listening modes: Speech Boost brings the voice forward, Background Boost makes the background clearer, and Automatic balances the two. The user stays in control of what is enhanced.

### Does speech enhancement work if the caller speaks another language?

Speech enhancement can work across languages when it is trained on sounds rather than words. Sharpi is trained on the sounds humans make, not on vocabulary, so it recognises human speech across all languages. In a contact centre that serves customers in several languages, agents get the same help on every call.

### Does voice AI need an internet connection to handle noise?

Voice AI does not always need an internet connection to handle noise. Some tools process audio in the cloud, but Sharpi works offline and requires no internet or cloud connection. Sharpi runs on-premise, does not store the audio, and customer data is not used to train the AI.

### Will speech enhancement slow down the conversation?

Speech enhancement should not slow down the conversation if the delay stays very low. Latency is the tiny delay between someone speaking and the other person hearing it. Sharpi processes sound in real time with less than 10 ms of latency, so the conversation can keep its natural rhythm.

See how Sharpi separates voices from background noise on both sides of your contact centre's calls.

[Book a demo](https://www.augmentedhearing.io/getdemo)

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