AudioLimiter: Difference between revisions

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

Latest revision as of 20:34, 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

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)


Requirements


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


Examples

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


Changelog

Version      Date            Changes

             2006/03/14      - latest release


Archived Downloads

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




Back to External Filters ←

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