How to make LevelMeterAnalyzer perform like librosa onset_strength()?

[xhy2008]

In the docs,the LevelMeterAnalyzer can only generate real-time peak levels(every 100ms).However, I would like to get all the output at once like the onset_strength function in librosa.Because I need to use peak levels as the input of my onset-detection model,as the conv layers wouldn't figure out the energy levels of the mel spectrum.
😂Maybe I have too little knowledge in deep learning.😂