SignalProcessing

public struct SignalProcessing

Static namepsace for signal processing functions.

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  • Find the root mean squared of a frame buffer of samples.

    Declaration

    Swift

    public static func rms(_ frame: Data, _ dataElements: Array<Int16>) -> Float

    Parameters

    frame

    Frame of samples.
    dataElements

    Preallocated array of data elements in the frame.

    Return Value

    The RMS of the frame.

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  • Convenience enum for Fast Fourier Transform window types.

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    Declaration

    Swift

    public enum FFTWindowType : String
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  • Convenience function to find the window of a FFT.

    Declaration

    Swift

    public static func fftWindowDispatch(windowType: FFTWindowType, windowLength: Int) -> Array<Float>

    Parameters

    windowType

    The FFT window type.
    windowLength

    The size of the window.
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  • Implementation of the Hann smoothing function algorithm.

    Note

    https://en.wikipedia.org/wiki/Hann_function

    Declaration

    Swift

    public static func hannWindow(_ length: Int) -> Array<Float>

    Parameters

    length

    The size of the window to find.

    Return Value

    The Hann window.

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