Flutter Voice recording custom waveform

I am trying to build a voice assistant application using Flutter, I want to make a sound wave like the -> Wave image
of course, I have made this widget using animations ! :

  Center(
   child: Row(
     mainAxisAlignment: MainAxisAlignment.center,
     crossAxisAlignment: CrossAxisAlignment.center,
     children: [
       ...List<Widget>.generate(12, (index) => VoiceLine())
     ],
   ),
 ), 

VoiceLine widget : build(BuildContext context) {

return Container(
  margin: EdgeInsets.all(8.0),
  width: 8.0,
  height: 8.0 + _animation.value,
  decoration: BoxDecoration(
    color: AppColors.secondaryColorWhite,
    borderRadius: BorderRadius.circular(5),
  ),
);

But I want this wave [ size of each line ] to be sensitive to the user's voice
How can I do this?