CB Audio Mixer
All our audio tools in one workspace. Load a track and mark zones on the waveform — each with its own operation: change the volume, shift the pitch, retime it, play it backwards or cut it out entirely. Add extra sounds or record your voice, edit each take on its own, then push it in between, mix it over the original or glue it to the end. Everything runs in your browser; nothing is uploaded.
How it works
The big waveform is your project. Drag to select, then add the selection as a zone with the operation of your choice — <strong>volume</strong>, <strong>pitch</strong>, <strong>speed</strong>, <strong>reverse</strong> or <strong>cut</strong>. Zones stay editable and removable afterwards. Below the band live your extra sounds: microphone takes, added files and copied stretches. Each one is a small sound bar of its own — trim it, retune it, change its volume — and only then place it: pushed in between (the rest slides back), mixed over the original (they play together) or glued to the end. Placed pieces stay movable and removable on the band. When it all sounds right, render the mix to MP3.
How do I cut and paste a part?
Select the stretch, press “Copy selection → tracks” — it appears below as its own track. Then mark the same stretch as a Cut-out zone to remove it from the main audio. Place the copied track wherever you want it: at an exact time, mixed over the original, or at the end.
Can I edit a recording before it lands in my project?
Yes — that is the whole idea. A microphone take or an added file first sits below as its own sound bar. Trim it to the good part, fix its volume or pitch, listen with ▶ — and only when it is right, place it into the main audio.
Does my audio get uploaded?
No. Decoding, editing, mixing and MP3 encoding all happen inside your browser — your audio never leaves your device. Even the speech and speaker detection run locally.
