How to Fix Common Audio Problems
Most audio problems sound alarming but have straightforward causes and fixes. This guide covers the most common ones — too quiet, distorted or clipping, cut off at the start or end, echoey, and out of sync — explains exactly what is causing each, and tells you honestly when a browser tool can fix it and when you need to re-record.
Audio is too quiet
What it sounds like: the recording is hard to hear at full volume, or noticeably quieter than other audio.
What causes it: the microphone was too far from the source, the input gain was set too low, or the file was exported at a conservative level to avoid clipping.
Can it be fixed after recording? Yes, often well. Boosting a quiet recording with a limiter (which raises the level while preventing distortion) usually works cleanly as long as the recording itself does not have heavy background noise. Use the Volume Booster to raise the level without introducing clipping. If the recording is both quiet and noisy, boosting will make the noise louder too — in that case, you are better off re-recording with the microphone closer to the source.
Audio is distorted or clipping
What it sounds like: a harsh, crackling, or crunching quality on louder moments. Voices sound raspy or blown out.
What causes it: the recording level exceeded the maximum the system could capture (clipping), or the recording was processed by a plugin or effect that pushed levels beyond 0 dBFS. Once clipping is baked into a recording, the distorted waveform is the waveform — the lost information is gone.
Can it be fixed after recording? Mildly clipped audio can be improved by a de-clipper (specialist software like iZotope RX). A browser tool cannot fix distortion caused by clipping — this is one of the few audio problems where re-recording is genuinely the right answer. Prevention: record at a lower input gain and leave headroom.
Audio is cut off at the start or end
What it sounds like: the recording starts mid-word, or ends abruptly before the last syllable finishes.
What causes it: a recording trigger delay (the recorder started a fraction late), a gate threshold that closed too early, or an accidental crop during editing.
Can it be fixed after recording? If the audio was cut in editing, use the Audio Trimmer to nudge the start or end point to recover the missing content — provided the original uncut recording is available. If the cut happened at capture (the device simply did not record those samples), the missing audio does not exist anywhere and cannot be recovered. Adding a short fade in with the trimmer can at least soften a sudden start.
Audio sounds echoey or reverberant
What it sounds like: voices sound like they are in a large empty room, bathroom, or stairwell. There is a tail of sound after each word.
What causes it: recording in a room with hard, reflective surfaces (bare walls, hard floors, no furniture or soft furnishings to absorb sound).
Can it be fixed after recording? Partially, with dedicated dereverberation software (iZotope RX, Adobe Enhance Speech). A browser tool cannot remove reverb — it is acoustically mixed into the signal in a way that requires machine-learning-based separation to undo. Prevention is far more effective: record in a carpeted, furnished room, use a duvet or soft furnishings around the microphone, or simply get closer to the mic so the direct voice is much louder than the room reflections.
Audio and video are out of sync
What it sounds like: the voice does not match the mouth movements in a video, or sound effects are a fraction late or early.
What causes it: a sample rate mismatch between the audio and video (e.g. audio at 44.1 kHz edited in a 48 kHz timeline), a recording buffer issue, or a Bluetooth audio device introducing latency during capture.
Can it be fixed after recording? Yes, in video editing software by shifting the audio track forward or backward on the timeline. The Tempo Changer can also subtly adjust the speed of an audio file (and therefore its duration) to bring it back into sync with a video track, without changing the pitch. This is a precise technique — even a change of 0.1–0.2% can compensate for a drift that builds over a long recording.
When to just re-record
Post-production can fix many problems, but some audio is beyond recovery without specialist tools: severe clipping, very heavy room echo, or recordings made near continuous loud noise (HVAC systems, traffic). For these, re-recording with the microphone closer to the source (ideally 15–30 cm for a voice) in a soft-furnished room will always produce a better result than trying to salvage a bad take.
Frequently asked questions
Can you fix clipping distortion in audio? Mildly clipped audio can be partially repaired with specialist tools like iZotope RX. A simple volume or format tool cannot fix it — the distorted waveform is the waveform and the lost information is gone. Prevention (recording at a lower gain with headroom) is much more effective.
Why does my audio sound like it’s in a tunnel? This is room reverb — sound bouncing off hard, bare surfaces. The fix is acoustic treatment (carpets, furniture, soft furnishings near the mic) or getting the microphone much closer to the speaker. It cannot be fully removed after recording without dedicated de-reverb software.
How do I make a quiet recording louder without distortion? Use a volume booster that includes a limiter, which raises the level while automatically preventing the peaks from clipping. The WaveCut Volume Booster does this automatically.
Why is my audio out of sync with my video? Usually a sample rate mismatch (audio at 44.1 kHz in a 48 kHz video project) or a Bluetooth recording latency issue. Fix it in your video editor by shifting the audio track, or subtly adjust the audio speed to compensate for drift.