Flutter monitors volume to realize waveform visualization of audio

About the following figure

The following plug-in is used ？

just_audio

just_audio Is a feature rich audio player , Apply to Android、iOS、macOS and web.

https://pub.flutter-io.cn/packages/just_audio

just_waveform

The plug-in extracts waveform data from audio files that can be used to render waveform visualization .

https://pub.flutter-io.cn/packages/just_waveform

audio_wave

Multi purpose simple bar chart with animation . It is highly customizable . You can customize the width and height of the widget . And the height of the bar 、 Color and radius .
https://pub.flutter-io.cn/packages/audio_wave