Inconsistent Audio Master Volume

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  • Problem Description

    The Audio object's "Set master volume" event takes in Decibels, but the Audio.MasterVolume property returns a volume value from 0.0 to 1.0.

    The manual here ( states that MasterVolume returns the current master volume set using the Set master volume action.

    Furthermore, the in-editor description of this property states "Get the current master volume, in decibels."

    Attach a Capx ... .capx?dl=0

    Description of Capx

    Simple example of showing difference between Decibels value and Audio.MasterVolume property

    Steps to Reproduce Bug

    • Run project
    • See that Audio.MasterVolume differs from "Decibels" value
    • Press up and down to see other values

    Observed Result

    Decibels greater than or equal to 0 produces MasterVolume = 1, negative values of Decibels produces fractional values of MasterVolume

    Expected Result

    MasterVolume equals Decibels. It would also be nice to set/get the volume controls in a 0-1 scale as this makes more sense for volume controls (a useful formula is Decibels = ln(Volume + 0.0001) / (ln(10) / 20))

    Affected Browsers

    • Chrome: YES
    • FireFox: YES
    • Internet Explorer: YES

    Operating System and Service Pack

    Windows 7 Service Pack 1

    Construct 2 Version ID

    Release 190 (64-bit) built at 14:54:22 on Nov 25 2014

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  • Thanks, good catch, fixed for the next build.

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