We are creating noise detector app for improvement of the app we have to add spectrogram , what are the blocks and its methodology to add in our app, can u help me?

[Ramon]

Check this. Maybe it can help you:

Please, help me with recognize simple sounds

Try the personal audio classifier This is a tool that can determine similarities between different sounds by training an audio model using a Spectogram. It is a free extension to use with App Inventor. How it works