Why your calls echo, and the cheapest fix.

Find out whether it is feedback or the room. Feedback is free to fix. The room is not.

Most call echo is not a room problem and not a microphone problem. It is your speakers playing your colleague's voice back into your own microphone. The cheapest fix is a pair of headphones you already own, and the permanent fix is a wired headset.

Start with the problem

First, find out who is hearing it. These are two different faults with two different fixes.

If the other side hears themselves a beat after they speak, that is feedback. Your speakers are feeding your mic, and you are the cause. If the other side says you sound hollow, distant or like you are in a bathroom, that is your room, and no amount of fiddling with their settings will help.

If you hear the echo, check the obvious case first: somebody else in your building is in the same meeting with their speakers on, or you have the meeting open on two devices. Two open tabs in one room will produce a howl that looks like a gear problem and is not.

Now run the headphone test, which takes ten seconds and settles it. Plug in any wired headphones or earbuds and join a call. If the echo stops immediately, it was feedback, and you have just found your fix for free. If it does not stop, it is the room.

The paths worth comparing

The honest ranking by cost is short, and the cheapest things on it work best.

Laptop placement deserves more credit than it gets. A laptop microphone sits a few centimetres from the speakers, under your hands, often on a hard desk with a wall right behind the screen. Raise it to eye level on a stand, push it back from the wall, and move your typing to an external keyboard, and three separate problems get smaller at once. The webcam or laptop camera guide covers the camera side of the same change.

Soft furnishings beat acoustic panels for this job, and it is not close on price. A rug on a hard floor, curtains instead of blinds, a bookcase with uneven contents on the wall you face, a fabric chair rather than mesh. These break up the hard parallel surfaces that cause slap-back, and nobody has to drill or glue anything.

What the platforms can and cannot do

Every platform runs acoustic echo cancellation on your microphone signal. It models what is coming out of your speakers and subtracts it from what the microphone hears. In a quiet room with a small, steady speaker level, it works well enough that most people never think about it.

It fails in predictable ways. It needs time to adapt, so the first second after you change volume or move the laptop tends to leak. It struggles when the speakers are loud enough to distort, because a distorted copy no longer matches the model. It struggles when two people talk at once, which is why speakerphone calls clip the start of words. And it has nothing to subtract when the problem is your room, because room reflections are your own voice arriving late, not the far end's voice coming back.

Noise suppression is a separate thing that people confuse with echo cancellation. Microsoft documents three levels in Teams: Auto, Low, and High, which suppresses all background sound that is not speech. High suppression can reduce how much room reverb gets through, so it sometimes masks a room problem. It will not fix feedback, and Microsoft suggests turning suppression off entirely for a good microphone in a quiet room.

This is also where certification earns its place in the decision. Microsoft's device certification program tests devices against published audio specifications, and only devices that pass carry the Certified for Microsoft Teams label. For a speakerphone, that testing is most of what you are buying. A certified unit like the Jabra Speak2 40 runs full duplex audio with a four-microphone array so both sides can speak at once. Your laptop in speaker mode does not.

Check compatibility and the complete cost

If you buy a headset, check three things on the listing. USB-A or USB-C, because the wrong one means a dongle. The Teams-certified variant or the general UC variant, because they are separate SKUs and not a setting. And whether it is mono or stereo, since office headsets are sold both ways and the mono version is lighter but less pleasant for everything else.

If you buy a desk mic instead, the microphone is not the whole purchase. You need closed-back headphones as well, because the moment you play the call through speakers you are back where you started. You also need a stand or arm that gets the capsule within about a hand's width of your mouth, angled past the keyboard. A cardioid pattern only rejects the room if you are close to it.

If you buy foam, read the numbers before you believe the photos. Auralex rates Studiofoam Wedgies at NRC 0.75 and sells them 24 to a box, which covers 24 square feet. Two-inch foam absorbs mid and high frequencies well and low frequencies poorly, so it tames slap-back and leaves the boomy end of a small room alone. It mounts with adhesive, which is a real problem in a rented flat.

Who should skip this purchase

Skip all of it if the headphone test fixed your echo and you do not mind wearing earbuds. You are done. Spend the money on a light for video calls instead.

Skip the panels, specifically, if you have not yet tried a rug, curtains and a full bookcase. Those do more per pound in a small room, and they do not need glue.

Skip the desk mic if the room is the complaint. Moving from a laptop mic to a nicer microphone in a bare room usually makes the room more audible, not less, because a better capsule hears more of it.

Our picks

These are ordered by what we would actually try, cheapest first, which is roughly the reverse of how most echo advice is written.

The Logitech H390 is the budget pick for a reason: it is a plain wired USB headset with a noise-cancelling boom mic, inline volume and mute, and it ends speaker-to-mic feedback the moment you plug it in. It carries no platform certification and it is not a nice pair of headphones. It does the one job.

The Jabra Evolve2 40 SE is the version you buy if you are on calls all day. Three microphones, 40 mm speakers, a busylight, and a boom you can flip up to mute. The lighter Evolve2 30 SE does the same job with two microphones and smaller drivers if weight matters more than comfort. The field is ranked in the best headsets for video calls.

The Rode NT-USB Mini is here for people who will not wear anything on their head and have already dealt with their speakers. It is cardioid, Rode tunes that pattern to reduce room sound, and the built-in pop filter means one less thing on the desk. It does not solve feedback on its own, so pair it with closed-back headphones and read headset or desk microphone before you commit.

The Auralex Studiofoam Wedgies come last on purpose. Buy them only after headphones, placement and soft furnishings, when you can still hear a hard slap-back in a recording. Start with the wall you face and the wall to your side, not the ceiling, and expect an improvement in clarity rather than a transformation.