 
     private var inputBusArray: [AUAudioUnitBus] = []
     private var outputBusArray: [AUAudioUnitBus] = []
-
-    private var pcmBufferArray: [AVAudioPCMBuffer?] = []
 
     /// Allocate the render resources
     override public func allocateRenderResources() throws {

    override public func deallocateRenderResources() {
        super.deallocateRenderResources()
        deallocateRenderResourcesDSP(dsp)
        pcmBufferArray.removeAll()
    }

    /// Reset the DSP

        if !canProcessInPlace || inputBusArray.count > 1 {
            for i in inputBusArray.indices {
                let buffer = AVAudioPCMBuffer(pcmFormat: format, frameCapacity: maximumFramesToRender)
                setBufferDSP(dsp, buffer, i)
            }
        }
