StudioWavePro — Online Audio Editor with 48+ Studio Tools

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StudioWavePro’s 3-band EQ is deliberately simple: one Low control (a shelf at 120 Hz) for bass and warmth, one Mid control (a wide bell at 1 kHz) for body and presence, one High control (a shelf at 8 kHz) for brightness and air. Each moves ±12 dB in half-dB steps. It’s the tone stack of every guitar amp and car stereo, applied permanently to a file.

Because there are only three decisions, this is the fastest way to fix the common complaints — "too boomy" (Low down), "muffled" (High up), "harsh and honky" (Mid down), "thin" (Low up). Press play, drag the sliders while listening, apply when it sounds right. When three bands aren’t enough resolution, the 10-band Equalizer is one click away in the related tools.

When to use

Quickly brighten a muffled recording or warm up a thin one.
Cut boominess from a voice recorded too close to the mic.
Tame the harsh midrange of a small-speaker recording.
Give a flat-sounding track a simple smile curve (Low up, Mid down, High up).
Make speech clearer without learning what ten frequency bands do.

How to use

Click "Open EQ (3-band)" below to launch the editor.
Drop in any audio file — MP3, WAV, OGG, M4A and FLAC are all supported.
Press "Play preview", then drag the Low (120 Hz), Mid (1 kHz) and High (8 kHz) sliders while listening — changes are audible instantly.
Use Reset to get back to flat at any point.
Click "Apply EQ", then download as WAV or MP3.

Tips

Small moves first: ±3 dB changes more than you expect. The ±12 dB extremes are for rescue jobs, not polish.
Cutting beats boosting — if a track is muddy, −4 dB on Low usually sounds cleaner than +4 dB on Mid and High together.
For voice clarity, try Mid +2 dB and Low −2 dB; for "expensive" sheen on music, High +2 to +3 dB.
Heavy boosts raise the level and can clip — if the preview sounds strained, pull all three down a touch or run Normalize after applying.
Need to hit one precise frequency (a resonance, sibilance, rumble)? Step up to the 10-band EQ, or use the dedicated Bass Boost / Treble Boost / High Pass tools.

Frequently asked questions

What frequencies do the three bands control?: Low is a shelf at 120 Hz — bass instruments, warmth, boom. Mid is a wide bell at 1 kHz — body, presence, the "honk" zone. High is a shelf at 8 kHz — brightness, clarity, air. Together they cover the whole audible spectrum in three handles.
How do I make my audio sound less muffled?: Raise High by +3 to +6 dB and, if it is also boomy, lower Low by a couple of dB. Preview while dragging — muffled material usually opens up immediately with a high-shelf boost.
How do I reduce boominess in a voice recording?: Pull Low down −3 to −6 dB. Voices recorded close to the microphone pick up extra bass (the proximity effect), and a low-shelf cut at 120 Hz is the textbook fix.
When should I use the 3-band vs the 10-band EQ?: Use the 3-band when the problem is describable as bass/mids/treble — it is faster and nearly impossible to misuse. Use the 10-band when you need a specific frequency: boxiness at 250 Hz, sibilance at 8 kHz, sub-rumble at 31 Hz.
Can I hear the EQ before applying it?: Yes — press Play preview and all three sliders respond in real time while the track plays. What you hear is exactly what is rendered when you click Apply.
Does equalizing lose audio quality?: The filters run at full floating-point precision, the same processing desktop audio software uses. The only risk is boosting so far that the output clips — if that happens, reduce the boosts or apply Normalize afterwards. Export as WAV for a lossless file.

StudioWavePro is a complete audio editor with 48+ studio-grade tools in one workspace. Trim, master, EQ, time-stretch, denoise, remove vocals, detect BPM and musical key, generate metronomes, and more. Editing tools

Audio Trimmer — crop a track to a selected region

Mute Section — silence a selected region

Reverse Audio — play the track backwards

Fade In/Out — ramp volume at start or end

Silence Trimmer — strip leading and trailing silence

Silence Gap Inserter — insert silence at a chosen position

Audio Looper — repeat a section N times

Audio Splitter — cut a track into multiple parts

Audio Merger — join multiple files end-to-end

Silence Splitter — auto-split at silent gaps

Crossfade Joiner — join clips with overlapping fades

Time and pitch

Speed Changer — speed up or slow down (with optional pitch preservation)

Pitch Shift — change pitch without changing tempo

Tempo Detector — estimate the BPM of a music track

Key Detector — estimate the musical key

Metronome Generator — create a click track at any BPM

Effects

Volume — make a track louder or quieter

Bass Boost — lift the low end

Treble Boost — lift the high end

Low Pass Filter — cut off high frequencies

High Pass Filter — cut off low frequencies (remove rumble)

Equalizer (3-band) — low / mid / high tonal shaping

Equalizer (10-band) — fine-grained tonal control

Echo — add repeating echoes / delay

Distortion — overdrive, fuzz, and lo-fi grit

Stereo Balance — shift the L/R center of a stereo mix

Stereo Widener — make stereo narrower or wider

Vocal Remover — karaoke (center-channel removal)

Hum Remover — strip 50/60 Hz mains hum

Mastering and analysis

Normalize — maximize volume without clipping

Compressor — even out loud and quiet parts

Loudness Meter — measure peak, RMS, and LUFS

Mono Converter — collapse stereo to mono

Channel Extractor — pull L, R, Mid, or Side

Sample Rate Converter — resample to 44.1, 48, or 96 kHz

Polarity Inverter — flip waveform for phase alignment

DC Offset Remover — center waveform around zero

Audio Visualizer — render an animated video from audio

StudioWavePro supports MP3, WAV, OGG, M4A, and FLAC files. Exports include WAV and MP3. This app requires JavaScript to run. Please enable JavaScript in your browser.