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Audio and ringtone guides
Clear, tested how-tos for making ringtones and editing audio — with the numbers that matter, like length limits, bitrates and fade times.
- How to make a custom iPhone ringtoneThree ways to make a custom iPhone ringtone — the iOS 26 Files app, GarageBand, and M4R sync from a Mac or PC — with the 30 and 40 second limits explained.
- How to set a custom ringtone on AndroidMake and set a custom ringtone on any Android phone: best format and length, where to put the file, and per-contact, notification and alarm sounds.
- How to cut an MP3 preciselyCut MP3 files cleanly: set exact start and end points, avoid clicks with short fades, choose the right bitrate when re-encoding, and know when to export WAV instead.
- Fade in and fade out audio: lengths and curvesHow long a fade in or fade out should be for songs, ringtones, podcasts and notifications, the difference between linear and smooth curves, and how fades remove clicks.
- Peak vs loudness normalizationWhat audio normalization does, peak normalization vs loudness (LUFS) normalization, why −1 dBFS is a safe target, and how to make quiet recordings and ringtones louder.
- MP3 vs M4A vs WAV vs M4R: which audio format?Compare MP3, M4A (AAC), M4R, WAV, FLAC and OGG: quality, file size per minute, compatibility with iPhone and Android, and the best format for ringtones and editing.
- iPhone ringtone format and length limitsThe exact specs for iPhone ringtones: M4R and AAC, sample rate, bitrate, file size, the 30- and 40-second limits for each method, and how to check a file.