AudioLimiter

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#REDIRECT [[External_filters#Audio_Filters]]
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{{FilterCat|External_filters|Plugins|Audio_filters}}
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{{FilterCat|External_filters|Audio_filters|}}
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{{Filter3
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|1=[https://github.com/dimzon dimzon]
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|2=2006-03-14
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|3=[https://forum.doom9.org/attachment.php?attachmentid=6586&d=1167241138 AudioLimiter-2006-03-14.zip]
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|4=Audio filters
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|5=Closed source
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|6=[https://forum.doom9.org/showthread.php?t=108470 Doom9 Forum]}}
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== Description ==
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Pupose:
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To increase volume for silent sounds a lot, to increase volume for middle-volume sounds a little and to keep hi-volume sounds untouched.<br>
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This must help to increase volume for speech/dialog without increasing volume for shoots, etc.
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Math explained:
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<pre>
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for exponential:
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        output = (input<0?-1:1)*(pow(10.0f, tanh( factor * log10(1 + abs(input)*9))/tanh(factor) ) - 1)/9
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for linear:
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        output = tanh( factor * input) / tanh(factor)
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</pre>
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<br>
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== Requirements ==
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* [x86]: [[AviSynth+]] or [https://sourceforge.net/projects/avisynth2/ AviSynth 2.5.8 or greater]
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* Supported color formats: N/A
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<br>
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== [[Script variables|Syntax and Parameters]] ==
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:{{Template:FuncDef|ExpotencialLimiter(clip, float "factor")}}
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:{{Template:FuncDef|LinearLimiter (clip, float "factor")}}
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:{{Template:FuncDef|WavGainLimiter(clip, float "factor")}}
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<br>
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::{{Par2| |clip| }}
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:::Input clip; audio must be float, use [[ConvertAudioToFloat]] if needed.
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<br>
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::{{Par2|factor|float|1.0}}
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:::<code>factor</code> - proposed values are 1.0...5.0, default is 1.0
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:::! Higher factor values increases the effect but can produce artifacts.
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<br>
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--------------
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:{{Template:FuncDef|ExpotencialLimiter(clip, float "curve")}}
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<br>
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::{{Par2| |clip| }}
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:::Input clip; audio must be float, use [[ConvertAudioToFloat]] if needed.
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<br>
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::{{Par2|curve|float|0.7}}
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:::<code>curve</code> - proposed values are 0.0...1.0, default is 0.7
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<br>
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== Examples ==
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WavSource(...)
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ConvertAudioTofloat()
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Normalize()
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LinearLimiter(2.0)
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<br>
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== Changelog ==
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Version      Date            Changes<br>
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              2006/03/14      - latest release
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<br>
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== Archived Downloads ==
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{| class="wikitable" border="1"; width="600px"
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|-
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!!width="100px"| Version
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!!width="150px"| Download
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!!width="150px"| Mirror
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|-
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!2006-03-14
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|[https://forum.doom9.org/attachment.php?attachmentid=6586&d=1167241138 AudioLimiter-2006-03-14.zip]
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|[https://web.archive.org/web/20200620173031if_/https://files.videohelp.com/u/223002/AudioLimiter-2006-03-14.zip AudioLimiter-2006-03-14.zip]
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|}
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<br>
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==External Links ==
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<br>
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<br>
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-----------------------------------------------
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'''Back to [[External_filters#Audio_Filters|External Filters]] &larr;'''

Latest revision as of 19:34, 25 February 2023

Abstract
Author dimzon
Version 2006-03-14
Download AudioLimiter-2006-03-14.zip
Category Audio filters
License Closed source
Discussion Doom9 Forum

Contents

[edit] Description

Pupose: To increase volume for silent sounds a lot, to increase volume for middle-volume sounds a little and to keep hi-volume sounds untouched.
This must help to increase volume for speech/dialog without increasing volume for shoots, etc.


Math explained: 

 for exponential:
        output = (input<0?-1:1)*(pow(10.0f, tanh( factor * log10(1 + abs(input)*9))/tanh(factor) ) - 1)/9
 for linear:
        output = tanh( factor * input) / tanh(factor)


[edit] Requirements


[edit] Syntax and Parameters

ExpotencialLimiter(clip, float "factor")
LinearLimiter (clip, float "factor")
WavGainLimiter(clip, float "factor")


clip   =
Input clip; audio must be float, use ConvertAudioToFloat if needed.


float  factor = 1.0
factor - proposed values are 1.0...5.0, default is 1.0
! Higher factor values increases the effect but can produce artifacts.


ExpotencialLimiter(clip, float "curve")


clip   =
Input clip; audio must be float, use ConvertAudioToFloat if needed.


float  curve = 0.7
curve - proposed values are 0.0...1.0, default is 0.7


[edit] Examples 

WavSource(...)
ConvertAudioTofloat()
Normalize()
LinearLimiter(2.0)


[edit] Changelog 

Version      Date            Changes

             2006/03/14      - latest release


[edit] Archived Downloads

Version Download Mirror
2006-03-14 AudioLimiter-2006-03-14.zip AudioLimiter-2006-03-14.zip


[edit] External Links



Back to External Filters ←

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