Audio guides
Practical guides for trimming, joining and adjusting audio with Sound Trimmer, from making a ringtone to fixing a file that will not open.
Cutting and trimming
How to trim an audio fileSet start and end times, add fades, preview and download.Remove silence from a recordingCut dead air from the start and end without clipping the first word.Make a ringtone from an MP3Pick the moment, trim it, then set it on Android or iPhone.Fade in and fade out explainedHow long to make fades for music, voice and ringtones, and how to stop clicks.
Removing pauses and mistakes
Remove long pauses from a voice recordingShorten hesitation and dead air automatically while keeping speech natural.Cut mistakes out of a recordingRemove false starts, coughs and tangents and join the rest without clicks.
Volume and joining
Make an MP3 louder without distortionPercent and decibels, clipping, and what to do when peaks get in the way.Join audio files into one MP3Order, matching levels, gaps, and mono and stereo.Make a podcast intro and outroLength, fades, matching the music to your voice, and music rights.
Formats and troubleshooting
MP3 or WAV?Which format to download for your clip.MP3 bitrate: 128 vs 192 vs 320 kbpsFile sizes, quality, and when WAV is better.Audio file won't open or export?Unsupported formats, limits, memory and damaged files.
Tools
Audio cutter · Cut out sections · Remove silence · Audio joiner · Volume changer
Reviewed October 2026 · How we write our guides · Suggest a correction