Audio

ANC vs ENC Earbuds: Which One Do You Need for Clear Calls?

ANC quietens the world for you; ENC makes your voice clearer for the person you are calling. Here is how they differ and what to check before buying earbuds for calls.

By Harika Behara 30 Oct 2026 · 5 min read 0 views Rate it 0 comments

ANC (active noise cancellation) reduces the noise you hear. ENC (environmental noise cancellation) reduces the noise the other person hears on a call. If you buy earbuds mainly for calls, ENC and good microphones matter most. If you want quiet music on a bus or flight, you need ANC. Many good earbuds now offer both.

Earbud boxes in India are full of acronyms: ANC, ENC, AI ENC, "quad mic", "hybrid ANC up to 50dB". It is easy to assume they all mean the same thing. They do not, and mixing them up is the most common reason people end up with earbuds that sound great for music but make them sound like they are calling from a railway platform.

What is the difference between ANC and ENC?

ANC vs ENC at a glance

ANC

Helps you hear less outside noise
Creates "anti-noise" sound waves
Best for steady hum: traffic, engines, AC
Uses more battery

ENC

Helps others hear your voice clearly
Filters background noise from the mic
Best for calls and video meetings
Does nothing for your music

According to SlashGear's explainer, ANC uses microphones to detect outside sound and plays an opposite sound wave to cancel it, a principle known as active noise control. ENC uses multiple microphones and signal processing to separate your voice from background noise before it is sent to the other person. One changes what you hear; the other changes what you sound like.

How does ANC work, and where does it fall short?

ANC comes in three types: feedforward (microphones outside the earbud), feedback (microphones inside, near your ear) and hybrid, which uses both for wider coverage. It works best on steady, low and mid-frequency sounds such as engine hum, traffic rumble and air-conditioner noise.

It handles sudden, irregular sounds like nearby conversations or a pressure cooker whistle less well
It cannot create total silence
It uses more battery because it is always processing
Some people feel ear pressure or mild discomfort with strong ANC

A useful benefit: in noisy places you can listen at lower volume, which is kinder to your hearing.

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How does ENC help on calls?

ENC focuses on your microphone. Several mics pick up sound, and software tries to keep your voice while suppressing the background. When it works well, the person on the other end hears you clearly even in a busy office or on the road, and you do not have to shout. But quality depends heavily on the hardware and tuning. On cheaper earbuds, aggressive ENC can make your voice sound robotic or cut off the ends of words.

Which should you buy for calls?

If calls are your priority, check these before spending:

Number and placement of microphones. More mics, placed well, usually help ENC. "Quad mic" or "six mics" is a good sign, but only if reviews confirm call quality.
Wind noise handling. Commuters on two-wheelers or open roads should look for wind-noise reduction specifically.
Real call samples. Many reviewers record test calls in noisy places. Listen to them; they reveal more than any spec.
Multipoint connection. Lets earbuds connect to your phone and laptop at the same time, handy for work calls.
Fit. A good seal improves both ANC and call quality. Try different ear-tip sizes in the box.

Do you need both ANC and ENC?

Your main use	What to prioritise
Work calls from home	ENC and microphones; ANC is optional
Calls while commuting	ENC with wind-noise reduction; ANC helps you hear the caller
Music on buses, trains and flights	Good hybrid ANC
Gym and running	Secure fit, water resistance and transparency mode for safety
Online classes	Comfortable fit and ENC

Good news: both are now common at reasonable prices. In the OnePlus festive sale, for example, models ranged from the Nord Buds 3r at an effective ₹1,599 to the Buds Pro 3 at ₹8,999, according to Ascendants. Check each model's call-quality reviews rather than assuming a higher price means better calls.

A quick test you can do at home

Within the return window, record a voice note through the earbuds next to a running fan, a TV or a busy road. Then play it back on another device. If your voice is clear and the background is low, ENC is doing its job. Then switch on ANC, play music at a low volume and see how much outside noise you still notice.

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Her View

For many working women, calls happen everywhere: in the kitchen, in a cab, in a school parking lot. Earbuds with good ENC can make you sound composed and professional even when the background is chaos. That small confidence boost is worth more than an extra 5dB of ANC on the box.

His Insight

Ignore the biggest dB number on the box. ANC claims like "up to 50dB" are measured in ideal conditions and are not comparable across brands. Buy on reviews that test real noise and real calls. And remember the other person's experience counts: if you take many calls, spend on the microphones.

H View Verdict

ANC is for your ears; ENC is for your voice. Buying earbuds for calls means prioritising ENC, microphone quality, wind handling and fit. Buying for travel and music means prioritising good hybrid ANC. If you need both, read real call and noise tests before paying, and test the earbuds yourself within the return window.