Question 1

Is Spectrum Analyzer free to use?

Accepted Answer

Yes, Spectrum Analyzer is completely free. There are no pricing tiers, no hidden costs, and no usage limits.

Question 2

Are my audio files uploaded to a server when using Spectrum Analyzer?

Accepted Answer

No. Spectrum Analyzer processes all audio entirely in your browser using the Web Audio API. Your files never leave your device.

Question 3

What audio formats does Spectrum Analyzer support?

Accepted Answer

Spectrum Analyzer supports MP3, WAV, FLAC, OGG, AAC, and M4A input files. You can download the result as WAV, MP3, FLAC, OGG, or AAC.

Question 4

What does the spectrum visualization show?

Accepted Answer

The spectrum analyzer displays frequency on the horizontal axis and amplitude on the vertical axis. It uses real-time FFT analysis to show how energy is distributed across frequencies as your audio plays.