Audacity

Audacity free audio-editor by Audacity Team

Audacity is a free audio editor plugin developed by Audacity Team. Compatible OS(s): Windows, macOS, Linux.

Audacity is a free multi-track wave (audio) editor.

Features:

  • Full record and edit functionality.
  • Import and export WAV, AIFF, Ogg Vorbis, MP3 and more.
  • Unlimited Undo.
  • Amplitude envelope editor.
  • Customizable spectrogram mode.
  • Frequency analysis window.
  • Many built-in effects.
  • Macros and Scripting options.
  • Supports VST, AU and LV2 plug-ins.

https://audacityteam.org

Alchemy WaveGen

Alchemy WaveGen free audio-editor | studio-tool by Hans Bickel

Alchemy WaveGen is a free audio editor and studio tools plugin Alchemy developed by Hans Bickel. Compatible OS(s): Windows, macOS, Linux.

Alchemy WaveGen creates custom oscillator and LFO waveforms for the Camel Audio Alchemy plug-in.

It is a standalone Java application with a simple monophonic synthesizer built in, so you can hear what you are doing.

Alchemy WaveGen has a plug-in architecture; by now it comes with two plug-ins:

  • FM Generator is a simple FM synth with nine operators you can connect almost freely.
  • Audio File Reader allows users to extract waveforms from AIF or WAV files.

Additionally one can create new waveforms by mixing between 4 waveforms, one can filter waveforms with a highpass- and lowpass filter (or even a comb filter) and manipulate waveforms in some other ways.

http://www.hansbickel.com