Transition: mix

Plugin Information

title: Mix
media types: Audio
description: Mix two audio tracks.
version: 1
creator: Dan Dennedy
copyright: Meltytech, LLC
license: LGPLv2.1

Bugs

  • Samples from the longer of the two frames are discarded.

Parameters

start

title: Start
description: The mix level to apply to the second frame. Any negative value causes an automatic crossfade from 0 to 1.
type: float
readonly: no
required: no

end

title: End
description: The ending value of the mix level. Mix level will be interpolated from start to end over the in-out range.
type: float
readonly: no
required: no

reverse

title: Reverse
description: Set to 1 to reverse the direction of the mix.
type: boolean
readonly: no
required: no
default: 0
widget: checkbox

combine

title: Use an alternative mixing algorithm
description: Mix using a low pass filter to prevent affecting audio levels. However, this may introduce slight artifacts. This is incompatible with start < 0.
type: boolean
readonly: no
required: no
default: 0

sum

title: Mix by simply adding samples
description: The default mixing algorithm halves the sample values before adding them to absolutely prevent clipping. However, that affects levels. This algorithm simply adds samples and may clip. In many real world scenarios, the signals being mixed typically have headroom in their level and are rarely correlated and thus often will not clip. Also, one can reduce the gain and add a limiter on the mixed output prior to integer quantization to prevent clipping. This mode is incompatible with start < 0.
type: boolean
readonly: no
required: no
default: 0

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