SVA

Unofficial audio visualizer for Suno. LUFS, True Peak, Spectrum & Goniometer in a side panel. No external data sent. Player only.

SVA is an unofficial, independent real-time audio visualizer that works with playback audio on the Suno website and displays visualization in a Chrome side panel. Designed for music creators and producers who want to monitor loudness, peaks, spectrum balance, and stereo characteristics in real time. Features: • LUFS measurement (Momentary, Short-Term, Integrated) — based on ITU-R BS.1770-4 • True Peak detection with peak hold • Loudness Range (LRA) and Dynamics • Frequency Spectrum (LO / MID / HI-MID / HI) • Goniometer (stereo phase visualization) with Correlation bar, histogram, and phase warning • Key detection — always-visible strip showing Key, candidates, and stability • BPM estimation and beat indicator • Panel copy — captures the side panel as a PNG to clipboard (⧉ button) • Loudness History graph • Session-based Snapshot comparison (up to 10) • Japanese / English tooltip support How to Use: 1. Open the Suno website in Chrome 2. Click the SVA icon to open the side panel 3. Play a track — audio visualization starts automatically 4. Use SNAPSHOT to temporarily save and compare measurements during the current session Privacy: • All audio processing is performed locally in the browser • Audio data is not recorded, uploaded, transmitted, or shared • Snapshots are stored in memory only and are cleared when the panel is closed • Only the UI language preference is saved locally using localStorage • No personally identifiable information (PII) is collected • The copy button captures the panel display as a local PNG image and writes it to your clipboard. No image or metadata is transmitted externally. Notes: • Works with the Suno player only. Editor and Studio are not supported. • This is an unofficial tool and is not affiliated with, endorsed by, or sponsored by Suno, Inc. • "Suno" is a trademark or registered trademark of Suno, Inc. Version History: v1.4.1 • Fixed measurement freeze during playback • Improved connection reliability on track/tab transitions v1.4.0 • Added sticky strip for always-visible Key, Stability, BPM, and Beat • Added SIMPLE/DETAIL button for Spectrum/Goniometer extended display • Improved connection stability v1.3.1 • Added time markers on Loudness History (up to 10) • Improved Goniometer display • Changed Correlation histogram to outline style v1.3.0 • Added Correlation histogram — shows stereo/mono trend accumulated over the current track • Added phase warning indicator — red line appears at the bottom of the Correlation bar if phase inversion is detected v1.2.9 • Added panel copy button (⧉) — copies the entire panel as a PNG to clipboard • Improved Correlation display: vertical bar overlaid on Goniometer canvas • Unified hover colors for header buttons v1.2.8 • Fixed stability issues when opening and closing the side panel rapidly • Improved reliability of analysis stop/start control v1.2.7 • Improved True Peak accuracy with 4x oversampling (ITU-R BS.1770-4 compliant) • Improved LRA accuracy with EBU R128 gating • Reduced CPU usage when side panel is not open • Fixed auto-reconnect after manual STOP • Fixed duplicate song-change events on long sessions v1.2.6 • CLR button now requires confirmation before clearing all snapshots • Memo input now appears as a title on the snapshot card • All tooltips unified with custom JP/EN tooltip system