AudioLimiter

From Avisynth wiki
(Difference between revisions)
Jump to: navigation, search
(redirect for convenient searching)
 
(AudioLimiter: add documentation)
Line 1: Line 1:
−
#REDIRECT [[External_filters#Audio_Filters]]
+
{{FilterCat|External_filters|Plugins|Audio_filters}}
−
{{FilterCat|External_filters|Audio_filters|}}
+
{{Filter3
 +
| dimzon
 +
| 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;'''

Revision as of 18:32, 20 June 2020

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

Contents

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


External Links



Back to External Filters ←

Retrieved from "http://avisynth.nl/index.php?title=AudioLimiter&oldid=11802"
Personal tools