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
Normalise 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)