Audio preparation
Podcast Loudness: LUFS Targets, True Peak, and Final Export Checks
Check podcast loudness without confusing LUFS and peak level. Read Apple's guidance, compare mono and stereo measurements, and verify the final encoded file.
The Saturalabs journal
Audio preparation
Prepare a useful working copy: choose a source format, inspect channels and file size, and keep excerpt timing before an edit or isolation test.
Explore the audio toolsAudio preparation
44.1 kHz vs 48 kHz: Choose a Sample Rate Without Changing Speed
Choose 44.1 or 48 kHz for your audio delivery. Compare PCM file sizes and original reference WAVs, then resample without merely changing the header.
Music & vocals
How to Slow Down a Song Without Changing Pitch
Make a slower practice recording without lowering its notes. Calculate a BPM speed factor, keep the phrase's lead-in, and check the exported WAV or MP3.
Audio preparation
How to Read an Audio Waveform: Amplitude, Time & Channels
Read an audio waveform with original stereo examples. Understand time bins, shared amplitude scales, silent channels, and what an overview cannot prove.
Music & vocals
How to Change the Key of a Song Without Changing Tempo
Transpose a song or backing track in semitones, choose the right direction, compare artifacts, and export a useful WAV or MP3 without changing practice tempo.
Audio preparation
How to Convert M4A to WAV for Audio Editing
Convert M4A to WAV in your browser or with Apple Music, Audacity and a tested FFmpeg recipe. Choose export settings and inspect the actual output before editing.
Sound isolation
How to Extract a Sound Effect from Video
Extract an audible bell, impact, or other effect from video. Preserve the attack and tail, compare bleed, and keep source timing with a free cue sheet.
Audio preparation
How to Extract Audio from Video: WAV or Original Audio
Export a video's whole soundtrack with Audacity or FFmpeg. Choose WAV conversion or AAC stream copy, check the selected track, and preserve timing.
Audio preparation
How to Fix Audio That Only Plays in One Ear
Check whether one-sided audio comes from your recording or playback setup. Extract the recorded channel as mono without averaging it with an empty side.
From reading to making
Explore free audio tools Choose a free preparation tool
Trim, join, inspect, or adjust a supported short recording locally. These utilities require no account or credits.
Made for curious ears.