Drop Audio File Here
Release file to begin local DSP track analysis
Analyzing Audio Track
Decoding audio buffer...
(Quick read while your file is analyzing)
⚑ Professional-Grade Audio Analyzer: 100% Free, Private & Instant

Built to give you the lightning-fast speed, accuracy, and depth of costly paid Audio Analyzers right inside your web browser completely for free! Designed from the ground up for high-precision metering, this tool lets you X-ray your audio files to understand them better with total privacy.

πŸ”’ 100% Local Privacy: No cloud uploads. Unreleased music or confidential audio files stay completely secure and never leave your device.
⚑ Hardware-Accelerated DSP: Computations execute directly on your machine’s CPU, eliminating upload delays and cloud server lag.
πŸŽ›οΈ Full Pro Metering: Includes a High-Resolution 8192-FFT Spectrogram, Goniometer Lissajous Phase Scope, RTA Spectrum Analyzer, and Peak Stereo Level Meter. Gives ability to access professional audio industry Mono On trick to listen file in mono but see it on scope in raw track view and post mono on view.
πŸš€ Zero Friction: Instant access in any web browser with no software downloads, plugins, or sign-ups required.
Master Pro Audio Analyzer Suite
Created by VARUN MAURYA • FREE FOR EVERYONE • πŸ”’ 100% LOCAL & PRIVATE • LinkedIn Profile
| Channel: Select or drop an audio file to begin analysis (100% Private - Processed locally on your device).
Stereo Width & Phase Correlation Overview
00:00 / 00:00
Height = Total Amplitude
Green = In-Phase
Yellow = Wide Stereo
Red = Anti-Phase (Collapses in Mono)
Goniometer / Phase Scope
-1 (Out)0 (Mono)+1 (In)
Spectrum Analyzer (RTA) & PEAK dBFS Meter
|
Interactive Spectrogram (Ultra-HD 8192-FFT Blackman-Harris Engine)
| Scale: |
LEFT CHANNEL
RIGHT CHANNEL
Quick Reference & Module Functions Guide

πŸ”’ 100% Client-Side Privacy

Your audio files are never uploaded to any cloud server. All audio decoding, Web Worker FFT signal processing, and rendering happen locally inside your browser. Unreleased tracks stay 100% secure on your computer.

1. Control Bar & Routing

Load audio via file selection or full-page drag & drop. Toggle playback with Spacebar. Select Left Only or Right Only to isolate channels, or turn Mono: ON to audition mono-compatibility.

2. Stereo Waveform Overview

Visualizes track amplitude over time. Bar colors reveal phase health: Green = In-Phase, Yellow = Wide Stereo, and Red = Out-of-Phase / Anti-Phase (risk of mono cancellation).

3. Goniometer / Phase Scope

Shows 2D stereo soundfield distribution and phase correlation meter. Switch between Scope: Raw Track View (unfiltered stereo audio file) and Scope: Post Mono ON Routing View (monitored signal that collapses visually into a straight vertical line in mono mode).

4. Spectrum Analyzer (RTA) & Level Meter

Real-time Float32 frequency response curves and Stereo Peak Level meter (0 dBFS to -90 dBFS). Features a single common middle linear dB scale, named PEAK dBFS header, customizable RTA display boost (+0 dB to +18 dB), peak-hold indicators, and numerical dB readouts.

5. Interactive Spectrogram

Ultra-HD 8192-FFT dual-channel spectral visualizer with Blackman-Harris windowing (-92 dB sidelobe attenuation) and Bilinear Anti-Aliased Rendering. Features Mel & Linear frequency scaling, 64x zoom, variable gain boost, and crosshair frequency/gain-dBFS/timestamp reading.

Studio Mix & Frequency Spectrum Quick Reference Sheet

Band Name Frequency Range Spectral Characteristics & Sonic Function Common Fixes & Mix Guidelines
Sub-Bass 20 Hz - 60 Hz Sub-bass feel, physical rumble, sub-kick energy. Highly prone to phase cancellation in mono. High-pass side channel at 100 Hz to keep sub-bass 100% mono centered.
Bass & Low-End 60 Hz - 250 Hz Root note fundamentals of bass instruments, kick drum body, warmth and punch. Duck bass around kick transient fundamental frequency to avoid muddy accumulation.
Low-Mids 250 Hz - 500 Hz Body of vocals, snare weight, acoustic guitar power. Excessive energy causes boxiness. Dip narrow notch around 300-400 Hz if mix sounds muddy or enclosed.
Mid-Range 500 Hz - 2 kHz Vocal presence, lead synths, horn body, horn fundamentals. Human ear is extremely sensitive here. Maintain balanced energy distribution to preserve instrument intelligibility in mono.
Upper-Mids 2 kHz - 4 kHz Attack transients, vocal edge, pick noise, snare snap. Harshness builds quickly around 3 kHz. Dynamic EQ cut at 3 kHz if vocals sound overly biting or fatiguing.
Presence & Brilliance 4 kHz - 20 kHz Cymbal sizzle, air, shimmer, reverb tails, upper harmonic air frequencies. Use smooth high-shelf boost on vocals above 10 kHz for silkiness.