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Prompt Audio · Audio editor

Cutwater

Record, cut, clean up and export audio files on your Mac, with every edit undoable

Cutwater is a wave editor for voice, music and sound effects. Open a file in one of 13 formats it reads and writes by itself, cut it by the sample, apply any of 56 effects with a live preview, remove hum and hiss, and save it back with its coding and tags intact. Edits don't touch the original until you save. If the app crashes, it offers your unsaved files back at the next launch.

Built-in effects
56, plus your Audio Units
Reads and writes
WAV, AIFF, AU, CAF, FLAC, MP3, AAC/M4A, Apple Lossless, Ogg Vorbis, Opus, GSM, VOX, raw
Sound library
1,305 clips
Sample rates
6 to 192 kHz
Free demo
Cutwater with four files open, playing a 13 s selection of a two-voice podcast interview at 0:01:38.480: the overview of the whole 11:24 file above 45 s of zoomed wave, the region Answer 2, the bookmark Retake this, the ribbon, the selection times and both level meters

What it does

  • Cut, copy and paste without waiting

    Cutwater keeps a list of your edits instead of rewriting the audio, so undo is instant, also on a two-hour file. The History window goes back to any step. Work on several files in tabs, and edit one channel of a stereo file on its own.

  • Effects you hear before you apply them

    Equalizers, compressor, reverb, echo, pitch and speed change, vocal reduction and more each open with presets and a preview of the selection. Chain them in Effect Chain, save the chain, and run it on other files. Audio Unit effects on your Mac work the same way.

  • Clean up a recording

    The Noise Removal Wizard samples the noise and takes it out in a few steps. Separate tools remove clicks and pops, DC offset and clipping. In the spectrogram you can select a frequency range, such as a phone chime at 2 to 6 kHz, and delete only that.

  • Hit a level

    Normalize reaches a target in LUFS, RMS or peak and limits the peaks to get there, so -14 LUFS measures -14. Match Loudness brings several files to the same level by the same measures.

  • Convert a whole folder

    The Batch Converter runs effects and format changes over any number of files, and says what it will do first. It never replaces a file silently: it asks, keeps both, and stores a backup when a file replaces its own source.

  • Sounds and recording

    The Sound Library holds 1,305 effects and music clips made for Cutwater. You can insert them at the cursor or save them to a folder. Record from any input, with voice-activated start, punch-in and overdub. If the disk fills up, Cutwater keeps what it has.

Screenshots

  • The logarithmic spectrogram under the wave of the interview, with a rectangle from 2200 to 6300 Hz drawn around the two partials of a phone chime, 1.9 s long at 0:02:21
    Taking a phone chime out of an interview: drag a rectangle around it in the spectrogram, and Cut, Delete, Silence, Paste and effects change only 2200 to 6300 Hz for those 1.9 s. In this file Delete lowers the chime by 47 dB and leaves 400 Hz and 1200 Hz where they were.
  • The Equalizer dialog on its Visual tab with the Voice presence preset: a curve through -6 dB at 20 Hz, 0 dB at 150 Hz, +4 dB at 2500 Hz and +2 dB at 6000 Hz, with the preview looping 20 s of the interview
    Shaping a voice with a drawn curve: the Voice presence preset adds 4 dB at 2500 Hz and takes 6 dB off at 20 Hz. Add or drag points while the preview loops and you hear the change. The file stays as it is until you press Apply.
  • The spectrogram after the Noise Removal Wizard: the hum bands stop inside the 12 s selection from 0:03:00 to 0:03:12 and carry on to the left and right of it
    Removing hum and hiss with the Noise Removal Wizard: tick what you hear and grab a pause as the noise sample, then Remove Hum and Noise Reduction (From Sample) run on the selected 12 s as one undo step. In this file the 50 Hz hum falls by at least 67 dB and the pause by at least 14 dB.
  • The Sound Library with 1,305 sounds in 21 folders, the Blues subfolder of Music open with 42 clips, and Slow Burn, C blues, 72 BPM playing at 13.3 of 41.5 s
    Trying a music bed from the Sound Library: 1,305 sounds in 21 folders, 210 of them music, each synthesised on your Mac when you press play. Insert one at the cursor, open it as a new file or save it to a folder.

System requirements

  • macOS 15 or later
  • Mac with Apple silicon

Third-party notices

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