Convert M4A to mono
Upload an M4A file and mix it down to a single mono channel.
Your file never leaves your device. All processing happens right in your browser, and nothing is uploaded to a server.
Upload an M4A file and mix it down to a single mono channel.
Your file never leaves your device. All processing happens right in your browser, and nothing is uploaded to a server.
Phone recordings are commonly stereo by default even though speech needs one channel. This tool downmixes your M4A to mono and re-encodes it as AAC, producing smaller files that transcription and voice APIs prefer.