1
Add your WAV file
Drop a File node onto the Brainy Canvas board and upload the source .wav recording you want to compress.
ConvertFree starter credits
WAVMP3
Compress an uncompressed WAV master into a portable, universally-playable MP3 that is a fraction of the size.
WAV stores raw linear PCM samples inside a RIFF container with no compression, so it is bit-perfect but bulky — roughly 10 MB per stereo minute at 16-bit/44.1 kHz. MP3 applies psychoacoustic lossy compression through the LAME encoder (libmp3lame), discarding frequency detail the ear is least likely to notice to reach roughly one-tenth the size. You convert WAV to MP3 when the recording is finished and you need a distribution copy: something small enough to email, stream, or load onto any device, player, or browser. The trade-off is irreversible — the discarded data cannot be reconstructed — so keep the original WAV as your archival master and treat the MP3 as a delivery format for the final mix.
Convert WAV to MP3 on the canvas
Drop your file onto a Brainy Canvas board, connect the converter node, and download the result. New accounts get free starter credits — enough for roughly 100 audio conversions — with no card required.
2
Attach the Audio Converter
Wire the File node into an Audio Converter node and select MP3 as the target; FFmpeg encodes it server-side with libmp3lame at a high bitrate.
3
Download the MP3
When the sandbox finishes, download the finished .mp3 straight from the node — ready to share or publish.