Spectrum
STEREO FREQUENCY ANALYZER
Demo is visual only. Choose an input to analyze real audio.
Inputs, installation & privacy +
Choose your source
Microphone listens to a microphone or audio interface. Allow permission when Chrome asks. Monitoring is off to prevent feedback.
Chrome tab analyzes another tab. Select a tab and enable “Share tab audio” in Chrome’s share dialog. Availability depends on your device.
Audio file plays a local track. Files never leave your device. Supported formats depend on Chrome.
Keep it on your desktop
Use Install app, or Chrome’s menu → Cast, save and share → Install page as app. The app shell works offline after the first visit.
A tribute to vintage Technics hi-fi, not an affiliated product or an exact SH-8065 replica. Each of the 31 bands shows its strongest FFT-bin magnitude, relative to the digital full-scale reference. MAX is the largest band magnitude before sensitivity adjustment, not a sample-peak or sound-pressure measurement. Demo values are synthetic. Mono inputs appear on both channels.