AAC to WAV for Music Production

WAV is a session format, which is exactly what you want. It imports into Pro Tools, Logic, Ableton, Reaper, and FL Studio with no re-encoding, scrubs instantly, and cuts sample-accurately — no decode step sitting between you and the waveform.

Sample rate and channel layout are preserved exactly — stereo stays stereo, 48 kHz stays 48 kHz, and nothing is silently resampled behind your back. That matters when you are lining audio up against picture or against other stems.

Never send an MP3 to a distributor or streaming platform. They transcode whatever you upload into their own formats, so handing them an already-compressed file stacks a second lossy generation onto what your listeners actually hear. Deliver lossless; convert to lossy for humans.

WAV runs about 10 MB per minute against AAC's 1.2, so the file grows roughly 8×. Irrelevant for a session file; keep the original for archiving. No "HD upscaling" is possible from a lossy source. The audio is identical — WAV just stops it degrading further.

The AAC on your drive almost certainly started life in HLS streaming segments, and a bare .aac stream lacks the container index that tells software its duration, so players won't list it and editors import it wrong. WAV is the destination when you need uncompressed, edit-ready audio that every DAW and editor accepts. Yes, it gets larger — around 8× — since you're unpacking the audio rather than compressing it. Keep the AAC for storage and use the WAV as the working copy. One honest note on this exact pair: AAC is already lossy, so moving to WAV cannot restore detail the AAC encoder discarded — it hands you an uncompressed container, not better audio, and the value is a loss-free chain from here on.