FMJ–Software Awave Studio v12.4.0.0

It can be used in a variety of ways - as a file format converter, as an audio editor, or as a synthesizer instrument editor.
Convert between different audio and synthesizer file formats.
Buy a sample library and convert it to a format that your synth understands.
Render MIDI songs to audio clips using the built in software synthesizer.
Edit audio, resample, fade in/out, normalize amplitudes, apply effects, et c.
Use it as an editor for your hardware synthesizer or software VST.
Home Page -

https://www.fmjsoft.com/awavestudio.html