Online Audio File Analyzer & Waveform Inspector
Inspect sample rate, true bitrate, RMS loudness, peak amplitude, DC offset, and channel dynamics for MP3, WAV, FLAC, and OGG files.
Supported Formats: .wav, .mp3, .flac, .aac, .ogg, .m4a (Max 50MB)
| Channel | DC Offset | Peak Min | Peak Max | RMS Level |
|---|
Understanding Key Digital Audio Inspection Metrics
Whether you are mastering music, mixing a podcast, or verifying sound effects, inspecting raw PCM audio data reveals crucial details about signal quality, headroom, and dynamic range that cannot be seen on standard media players.
Key Metrics Explained for Audio Engineers & Producers
| Audio Parameter | Engineering Definition | Optimal Standard |
|---|---|---|
| Sample Rate | Number of audio snapshots captured per second. Standard CD audio is 44,100 Hz (44.1 kHz), while video/film uses 48,000 Hz (48 kHz). | 44.1 kHz (Music) / 48 kHz (Video & Broadcast). |
| RMS Loudness | Root Mean Square represents the perceived continuous power and body of the sound, unlike instant peaks. | -12 dBFS to -18 dBFS for mixed masters. |
| DC Offset | A hardware defect where the zero-baseline of the waveform is shifted above or below 0.0, eating up dynamic headroom. | 0.000000 (Fix with a High-Pass Filter at 20 Hz). |
| Peak Amplitude | The highest instantaneous transient spike in the audio file. Values exceeding 1.0 (0 dBFS) result in digital clipping distortion. | -1.0 dB True Peak (for streaming safety). |
Streaming Platform Loudness Targets (LUFS)
- Spotify: Targets -14 LUFS (with a -1 dB True Peak ceiling to prevent lossy transcoding inter-sample clipping).
- Apple Music: Targets -16 LUFS (via Sound Check).
- YouTube: Normalizes video audio to -14 LUFS.
Frequently Asked Questions (FAQ)
1. Are my audio files uploaded to a remote server?
No. This audio analyzer runs entirely inside your browser via the Web Audio API. Your files never leave your computer or phone, ensuring 100% privacy and lightning-fast analysis.
2. What is the difference between MP3 and WAV?
WAV is an uncompressed, lossless PCM audio container providing studio-quality fidelity, while MP3 is a compressed, lossy format that discards inaudible high frequencies to reduce file size by ~90%.
Inspect and master your audio with scientific precision. Bookmark this Online Audio File Analyzer for instant waveform and dynamic range verification!