UD5 Toolkit
Headphone Burn‑In Noise Generator – Online Pink/White
Generates continuous noise to burn in new headphones. Switch between pink and white noise.
Audio Processing & Editing
7+ toolsAudio Loudness Normalizer – Online LUFS Target Preview
Analyze your audio file and see an approximate RMS/LUFS. Not a full normalizer, but an estimator.
Online Voice Recorder & Downloader - Mic to WAV
Record audio from your microphone and save as WAV file. Visual waveform while recording. Simple and privacy-friendly; audio stays in your browser.
Online Audio Trimmer & Splitter - Cut MP3/WAV Locally
Trim audio files or split into multiple segments using visual waveform. Set start/end markers precisely. Download segments or merged track. Purely browser-based.
Subwoofer Phase Tester – Online Audio Check
Play low-frequency tones to check subwoofer phase alignment with main speakers. Simple tool.
Live Audio Spectrum Analyzer – Online Microphone FFT
Real‑time frequency spectrum from your microphone. Visual bars or line. Check room resonance.
Speaker Polarity Test – Online Click & Listen
Generate a pop signal to determine if speakers are wired in phase. Quick stereo test.