WPF 麦克风 动态音量大小

                                                                               

 绿色部分可以动态调整高度：

    <Grid  Height="450" Width="800">
        <Viewbox>
            <Canvas Width="20" Height="20">
                <Path Data="M5.39285714,9.10714286 L5.39285714,9.64285714 C5.39285714,12.1873119 7.45554526,14.25 10,14.25 C12.5075786,14.25 14.5472536,12.2466667 14.6058479,9.75317723 L14.6071429,9.64285714 L14.6071429,9.10714286 L15.75,9.10714286 L15.75,9.64285714 C15.75,12.6256586 13.4787934,15.0779913 10.5714145,15.3648212 L10.5714286,17.6785714 L9.42857143,17.6785714 L9.42826797,15.3647899 C6.55788985,15.0814502 4.30767245,12.6873663 4.25109121,9.75601379 L4.25,9.64285714 L4.25,9.10714286 L5.39285714,9.10714286 Z" Fill="#CDCDCD" />
                <Rectangle Width="5.35714286" Height="10" RadiusX="2.67857143" RadiusY="2.67857143" Fill="#CDCDCD" Canvas.Left="7.32142857" Canvas.Top="2.32142857" />
                <Rectangle Width="5.35714286" Height="5" Fill="#13C25F" Canvas.Left="7.31285714" Canvas.Bottom="7.6871429" />
            </Canvas>
        </Viewbox>
    </Grid>