AudioVisualizerControl.xaml

<UserControl
    x:Class="Minutes.AudioVisualizerControl"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:local="clr-namespace:Minutes"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    Width="800"
    d:DesignHeight="450"
    d:DesignWidth="800"
    mc:Ignorable="d">
    <ItemsControl x:Name="AudioLevels" HorizontalAlignment="Center">
        <ItemsControl.ItemTemplate>
            <DataTemplate>
                <Rectangle
                    Width="{Binding RelativeSource={RelativeSource AncestorType=UserControl}, Path=BarWidth}"
                    Height="{Binding}"
                    Margin="{Binding RelativeSource={RelativeSource AncestorType=UserControl}, Path=BarMargin}"
                    Fill="{Binding RelativeSource={RelativeSource AncestorType=UserControl}, Path=BarColor}"
                    RadiusX="{Binding RelativeSource={RelativeSource AncestorType=UserControl}, Path=BarCornerRadius}"
                    RadiusY="{Binding RelativeSource={RelativeSource AncestorType=UserControl}, Path=BarCornerRadius}" />
            </DataTemplate>
        </ItemsControl.ItemTemplate>
        <ItemsControl.ItemsPanel>
            <ItemsPanelTemplate>
                <StackPanel Orientation="Horizontal" />
            </ItemsPanelTemplate>
        </ItemsControl.ItemsPanel>
    </ItemsControl>
</UserControl>