Question 1

Is Frequency Detector free to use?

Accepted Answer

Yes, Frequency Detector 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 Frequency Detector?

Accepted Answer

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

Question 3

What audio formats does Frequency Detector support?

Accepted Answer

Frequency Detector 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 is the frequency range of detection?

Accepted Answer

Frequency Detector analyzes the 20Hz to 20kHz range (the full human hearing spectrum). It identifies the top 10 dominant frequencies with their corresponding musical note names.