Binary operator '*' cannot be applied to operands of type 'Float' and 'Double'

Question

I am implementing AudioVisualizer and I am trying to calculate time of audio but I am getting below error

Binary operator '*' cannot be applied to operands of type 'Float' and 'Double'

Here is my code:

 var lowPassReslts: Double = 0.0
 var lowPassReslts1: Double = 0.0

 let ALPHA: Float = 1.05
    
 let averagePowerForChannel = pow(10, (0.05 * audioPlayer.averagePower(forChannel: 0)))
 lowPassReslts = ALPHA * averagePowerForChannel + (1.0 - ALPHA) * lowPassReslts //HERE i am getting error which i mention above
    
 let averagePowerForChannel1 = pow(10, (0.05 * audioPlayer.averagePower(forChannel: 1)))
 lowPassReslts1 = ALPHA * averagePowerForChannel1 + (1.0 - ALPHA) * lowPassReslts1 //HERE i am getting error

This above code have converted from Objective-C. This code works perfect in Objective-C but it is not working in Swift. Can anyone please tell me how to solve this error?

Answer 1

    var lowPassReslts: Double = 0.0
    var lowPassReslts1: Double = 0.0

    let ALPHA: Float = 1.05

    let averagePowerForChannel = pow(10, (0.05 * audioPlayer.averagePower(forChannel: 0)))
    lowPassReslts = Double(ALPHA * Float(averagePowerForChannel) + (1.0 - ALPHA) * Float(lowPassReslts))

    let averagePowerForChannel1 = pow(10, (0.05 * audioPlayer.averagePower(forChannel: 1)))
    lowPassReslts1 = Double(ALPHA * Float(averagePowerForChannel1) + (1.0 - ALPHA) * Float(lowPassReslts1))