Free Online Audio Spectrum Analyzer via Microphone
Spectral frequency analysis of sound picked up from your device's or computer's microphone. To start the program, you must toggle the microphone ON/OFF button below. When your computer prompts you to allow permission to access the microphone, click "yes" or "allow".
If you desire to analyze sound from an uploaded file, click here.
If you are looking for a plot spectrum tool (how often a specific frequency is found in an audio file as a whole), click here.