Flatsonar

Kwave

by KDE

Sound editor

Broad permissions Verified creator GPL-2.0+ v26.08.1
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Screenshot 1 of Kwave

About

Kwave is a sound editor that can record to, play, open, and edit many file formats. Kwave makes it simple to edit audio in many ways.

Adjust volume level:

  • Fade in, fade out, or custom amplitude curve
  • Scale volume by a constant factor
  • Normalize volume

Adjust frequency content:

  • Lowpass filter
  • Bandpass filter
  • Notch filter
  • Pitch shift

Other features:

  • Add noise
  • Add silence
  • Convert audio sample rate
  • Go to position
  • Insert audio from clipboard
  • Reverse audio
  • Save audio blocks between labels as separate files
  • Sonagram (spectrogram)

Supported file formats:

  • WAV (*.wav)
  • Ogg/Opus (*.opus)
  • Ogg/Vorbis (*.ogg)
  • MP3 (*.mp3)
  • FLAC (*.flac)
  • ASCII coded audio (*.ascii)
  • all file formats supported by libaudiofile (some formats are import only)

Permissions

1 permission weaken the sandbox. Flatsonar asks before installing.

  • talks to system service org.freedesktop.UDisks2
    --system-talk-name=org.freedesktop.UDisks2
  • inter-process communication (needed for X11)
    --share=ipc
  • X11 display, only when Wayland is unavailable
    --socket=fallback-x11
  • audio
    --socket=pulseaudio
  • Wayland display
    --socket=wayland
  • GPU acceleration
    --device=dri
  • access to xdg-config/kdeglobals
    --filesystem=xdg-config/kdeglobals:ro
  • talks to com.canonical.AppMenu.Registrar
    --talk-name=com.canonical.AppMenu.Registrar
  • talks to org.kde.kconfig.notify
    --talk-name=org.kde.kconfig.notify
  • talks to org.kde.KGlobalSettings
    --talk-name=org.kde.KGlobalSettings

Who publishes this

The creator demonstrably controls this app id: Flathub verification, the hosting account owns the namespace, or a well-known file on their domain.

  • fetches from downloads.sourceforge.net over unencrypted http: anyone on the path can swap the bytes
    source:insecure-url
  • verified on Flathub: the developer proved they control this app id
    publisher:flathub

Maintenance

Recent activity on the upstream repository, or built and reviewed by Flathub.

No staleness signals: recent activity, or built and reviewed by Flathub.