ClearWave Studio is a free, professional-grade audio cleanup tool by Creator Sounds Pro that runs entirely inside your web browser. It removes background noise — hum, hiss, room tone, fan noise, electrical interference — from voice recordings, podcasts, interviews, music demos and field recordings.

Nothing is uploaded to any server. All processing happens locally on your device using your browser's audio engine. Your files never leave your machine.

Drag and drop an audio file onto the drop zone, or click Browse Files to select one. Supported formats: WAV, MP3, AAC, FLAC, AIFF, OGG, M4A. Maximum file size: 500MB.

Once loaded, a live waveform appears. Use the H-ZOOM buttons to zoom into specific sections, and V-ZOOM to amplify the amplitude display — useful for quiet recordings where the noise floor is hard to see.

Click anywhere on the waveform to set the playback position. Press Space or the play button to listen.

This is the most important step. Drag across a region of the waveform that contains only background noise — a gap before someone starts speaking, a moment of silence, a pause between sentences, or the end of a recording after content has finished.

The selected region is highlighted in amber. The duration is shown in the waveform. You need at least 50ms of noise-only audio for a good analysis.

Click 🔍 Evaluate Noise. The app will:

• Measure the noise floor level (in dBFS)
• Identify the dominant frequency character (hum, hiss, room tone, etc.)
• Auto-select the best cleanup profile
• Configure all processing settings to match your specific noise fingerprint

You'll see a result card explaining what was found and which profile was applied. You can then override this by clicking any of the 8 preset cards.

If you're not happy with the region you selected, click ↩ Re-evaluate to pick a different section.

Click ⚡ Clean Audio. The app processes your full file using the evaluated settings. This may take a few seconds for longer files. A progress bar shows status.

When done, playback starts automatically so you can hear the result immediately. The waveform switches to show the cleaned version in green.

You can compare views using the Original / Processed toggle buttons above the waveform.

The Cleanup Intensity slider is your main fine-tuning control. It adjusts how aggressively the gate and noise reduction are applied:

• Slide left (negative) — gentler, more natural sound, less silence between words
• Centre (±0) — balanced, the evaluated settings at full strength
• Slide right (positive) — more aggressive, cleaner silences, stronger reduction

Use the ⊘ Bypass button to instantly toggle between your cleaned and original audio for an A/B comparison. This is the best way to judge whether the cleanup is working well.

If you want more control, open Advanced Settings to manually adjust the Noise Reduction, Gate, Transient Preservation and EQ parameters.

• 🎙 Voice / Podcast — Balanced speech clarity. Protects consonants and attack transients. Good default for most voice recordings.
• 🎛 Studio Clean — Maximum removal. Near-silence between words. Best for recordings with very heavy noise that need a flat floor.
• 🏠 Preserve Room Tone — A light touch that keeps the natural acoustic character of the room. Good for drama, interviews where "room feel" matters.
• 🌊 Preserve Ambience — Removes tonal intrusions (hum, hiss) while preserving the spatial and atmospheric quality of the recording.
• 🎵 Music / Instruments — Minimal processing. Fully preserves dynamics, sustain and transients. Use when you want cleanup to be virtually inaudible.
• 🌿 Field Recording — Targets wind rumble and outdoor ambient noise while retaining the foreground detail of a location recording.
• ⚡ Remove Hum / Buzz — Specifically tuned for electrical interference: mains hum at 50/60Hz, fan noise, camera motor buzz. Applies a low-shelf EQ cut.
• ✨ Light Touch — Barely-there cleanup. Just a subtle polish. Good when your recording is mostly clean and you want to take the slightest edge off.

Click ⚙ Advanced Settings to expand the full processing chain:

• Noise Reduction — Amount controls how much of the noise profile is subtracted. Smoothing controls temporal stability (higher = fewer artefacts, less aggressive). Artifact Reduction reduces musical noise at the cost of some resolution.
• Noise Gate — Threshold sets the level below which audio is attenuated. Range sets how much it's attenuated when closed. Attack, Release and Hold control timing. Drag the red dashed lines on the waveform to adjust threshold visually.
• Transient Preserve — Protects fast attacks (speech consonants, drum hits, guitar picks) from being over-processed. Sensitivity sets how aggressively transients are detected.
• Parametric EQ — 5-band EQ with draggable nodes on the frequency canvas. Drag a node left/right to change frequency, up/down to change gain. Use Lo Cut to remove low-frequency rumble, Hi Cut to tame harsh top-end.

Any changes to advanced settings will trigger an automatic reprocess after a short delay so you can hear the effect.

When you're happy with the result, click Export WAV. The app defaults to your source file's sample rate and 24-bit depth. You can override:

• Sample rate: 44.1 kHz (CD standard), 48 kHz (video/broadcast), 96 kHz (high-res)
• Bit depth: 16-bit (CD), 24-bit (professional standard), 32-bit (mastering), 32F (float, maximum precision)

The export uses Lanczos-3 resampling when converting between sample rates, which produces high-quality results with minimal aliasing.