Sidetone vs Echo Cancellation in Headsets: What's Different?

What is sidetone?

Sidetone is the sound of your own voice fed back into your headset speakers while you talk. In a normal face-to-face conversation, your ears hear your voice through your skull and the air around you. When you wear a closed headset, that natural feedback is blocked, and many people start speaking louder without realizing it.

Sidetone restores a small amount of your voice into the earpiece, which helps you keep a natural speaking level and reduces the feeling of being sealed off from the room. It is especially useful for long calls and call centers. If you are not sure whether your headset has it, look for a sidetone control in the companion app or on the headset itself. For more detail, see our guide to headset sidetone.

What is echo cancellation?

Echo cancellation is a processing technology that removes the echo of the far-end caller from your microphone signal. When the caller speaks, their voice comes out of your headset speakers, leaks into your microphone, and is sent back to them. That creates the delayed repetition of their own voice that makes calls hard to follow.

Echo cancellation, sometimes called acoustic echo cancellation, continuously models the speaker signal and subtracts it from the microphone signal. The result is that the caller hears your voice without an echo of their own. This is different from noise reduction, which targets background sounds rather than the caller's voice. You can read more about the technology in our headset echo cancellation article.

How sidetone and echo cancellation work together

In a well-designed call headset, sidetone and echo cancellation serve different sides of the call. Sidetone supports you, the wearer, by making your own voice audible. Echo cancellation supports the caller by keeping your microphone signal clean.

Both features matter for long sessions. Without sidetone, you may fatigue your voice. Without echo cancellation, your caller may hear their own voice repeating and end the call feeling frustrated. For this reason, most office-oriented headsets include both, and many let you adjust sidetone or toggle echo cancellation in the software. If you are choosing between wired vs wireless headsets, check that the wireless model supports the call features you need over a stable Bluetooth connection.

Which one should you prioritize?

If you make calls in a quiet room with one other person, sidetone may be the feature you notice most. It keeps you from shouting and makes you feel like you are in a normal conversation. If you work in an open office or use a softphone on a PC, echo cancellation is the feature that keeps you professional on the other end.

Gaming headsets with sidetone are common because players need to hear their own voice over loud game audio. Business headsets tend to emphasize echo cancellation and microphone clarity, especially when they are certified for platforms like Microsoft Teams or Zoom. Think about who is on the other end: your teammates may appreciate clean audio more than they appreciate your ability to hear yourself.

How to check for these features

Look for the words sidetone, monitor, or hear your own voice in the spec sheet. Echo cancellation may be listed as AEC, acoustic echo cancellation, or simply echo cancellation. Some manufacturers include these features in the companion app, where you can adjust sidetone volume or enable echo cancellation for calls.

Bluetooth headsets that support call profiles generally rely on the headset's own processing, so the same headset may behave differently on a phone versus a computer. If call clarity matters to you, try the headset on the platform you intend to use most. For a deeper look at platform support, see headset platform compatibility.

Keep the volume at a safe level

No call feature can replace good volume habits. The National Institute on Deafness and Other Communication Disorders notes that sounds at or below 70 A-weighted decibels are unlikely to cause hearing loss, while long or repeated exposure to sounds at or above 85 dBA can. Headset volume limits are not a substitute for taking breaks.

Most headsets do not state their maximum output in dBA, so the practical advice is to start at a low volume and raise it only until you hear the other person comfortably. If you cannot hear yourself with sidetone, adjust the sidetone level instead of turning up the overall volume. Protecting your hearing keeps calls comfortable for years, and it is especially important if you use a headset for a full workday. The CDC and NIOSH highlight that hazardous noise is a common workplace risk, but it can be prevented.

What to pick for your use

Questions

What is the difference between sidetone and echo cancellation?

Sidetone feeds your own voice back into your ears so you can hear yourself talk. Echo cancellation removes the far-end caller's voice from your microphone signal so they do not hear an echo. They work on different sides of the call.

Can I use a headset without sidetone?

Yes, but you may raise your voice without realizing it. Many people prefer sidetone for long calls, especially in quiet settings. If your headset does not have sidetone, try using it at a moderate volume for a few days to see if you notice any difference in your speaking level.

Does echo cancellation also remove background noise?

No. Echo cancellation specifically removes the caller's voice that leaks into your microphone. Background noise is handled by noise reduction or a noise-cancelling microphone. These features are related but separate; see our comparison of noise-cancelling mic vs ANC for how they differ.

Is sidetone the same as transparency mode?

No. Sidetone feeds your own voice into the headset during calls. Transparency mode uses external microphones to pass ambient sound into the earpieces. You can compare them in sidetone vs transparency mode.

Do Bluetooth headsets have echo cancellation?

Many Bluetooth headsets designed for calls include some form of echo cancellation. Bluetooth Classic, the radio used for audio streaming, supports two-way audio and is common in headsets, so call processing features are built into the product. Check the product specs or companion app for the exact call features before buying.