Audio Equaliser

Audio Equaliser changes the balance of low, middle and high sounds in a recording. Give thin music more bass, make a muffled voice clearer, take the boom out of a laptop microphone, or soften harsh hiss and sibilance.

You get a 10-band graphic equaliser from 31 Hz to 16 kHz with ±12 dB per band, bass and treble shelves, a high-pass filter for rumble, a steep low-pass filter for hiss, a compressor that evens out loud and quiet parts, and a preamp. Start from a preset such as Bass boost, Vocal clarity, Podcast, Phone call, Warm, Bright or Reduce hiss, then fine-tune it. The curve is drawn from the real filters, and while the preview plays a live spectrum of the sound moves behind it.

Press play and the live preview runs through those same filters, so you hear changes as you drag. Flip between “EQ on” and “Original” (or press B) to compare. Saving runs the identical filters over the whole file, with an optional soft limiter so boosts don’t clip. Everything happens in your browser, with no upload, sign-up or watermark.

1. Press “Choose a file” or drop an audio or video file on the box. It is read and the preview player appears.
2. Tap a preset, or drag the ten band sliders and the shelves. Choose a High-pass for rumble, a Low-pass for hiss, and “Even out loud and quiet parts” for uneven speech.
3. Press the round play button and listen while the live spectrum shows the sound. Switch between “EQ on” and “Original (B)” to compare, and watch for the Clipping light.
4. If the orange note says boosts may clip, leave “Prevent clipping” ticked or press “Lower the preamp to fit”.
5. Pick a format under “Save as” and press “Save with EQ”. Listen to the saved file on the page, then download it.

• Ten bands at 31, 62, 125, 250, 500 Hz and 1, 2, 4, 8 and 16 kHz, each ±12 dB in half-decibel steps.
• Bass shelf (100 Hz), treble shelf (8 kHz) and preamp from −18 to +6 dB.
• High-pass at 40 to 300 Hz, and a 24 dB-per-octave low-pass at 16, 12, 8, 5 or 3.4 kHz.
• Compressor in three strengths, set from the file’s own loudness, heard live and saved in line with the original.
• Live spectrum analyser behind the response curve while the preview plays.
• Eight presets: Flat, Bass boost, Vocal clarity, Podcast, Phone call, Warm, Bright and Reduce hiss.
• Live preview with instant A/B against the original, a clipping light, and keyboard shortcuts (Space, B).
• Saving renders the same filters offline, with an optional soft limiter at −1 dBFS, as MP3, M4A, OGG, WAV or FLAC.

• Cutting usually sounds better than boosting. To make a voice clearer, try lowering 250 to 500 Hz before raising 2 to 4 kHz.
• Big boosts add level. If the headroom note appears, lowering the preamp keeps the sound open; the limiter keeps it loud.
• A high-pass at 80 Hz cleans up almost any voice recording without changing how the voice sounds.
• For hiss, try a low-pass at 12 kHz first: speech and most music lose almost nothing up there. Lower settings start to dull the sound.
• Watch the spectrum while you play: a tall column that pokes out is where a narrow cut on that band will help most.