[jroth: Re: Using value of -ev for -ea]

--ccdikckun3trw4jx
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline


-- 
Joel Roth

--ccdikckun3trw4jx
Content-Type: message/rfc822
Content-Disposition: inline

Date: Sat, 4 Apr 2020 15:41:43 -1000
From: Joel Roth <jroth>
To: "[email protected]" <[email protected]>
Subject: Re: [ecasound] Using value of -ev for -ea
Message-ID: <20200405014143.hbo5ijz522xmc27u@sprite>
Reply-To: Joel Roth <[email protected]>
References: <084c433a-180d-4a11-8933-2fae0299fbf0@localhost>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <084c433a-180d-4a11-8933-2fae0299fbf0@localhost>
User-Agent: NeoMutt/20170113 (1.7.2)

On Sun, Apr 05, 2020 at 06:21:34AM +1000, [email protected] wrote:
> Dear all,
> 
> I'm trying to normalize an audio file.
> 
> using the effect preset '-ev' gives me the maximum gain which can be applied before clipping.
> 
> But the manual states that this value can be used to amplify the signal using the '-ea ' preset.
> 
> I want to make a script which passes the value from the '-ev' output into '-ea', so:
> 
> ecasound -i Test.wav -ev -o:null
> 
> ...some code from the script...
> 
> ecasound -i Test.wav -ea:<percentage_based_on_ev> -o Test2.wav
> 
> I can get any value that is listed in the output of '-ev' using grep and then pipe it into a variable.
> 
> I get the impression that I have to make a calculation from gain (in dB I presume) to a percentage, before I can pass the value into '-ea'.
> 
> Is this correct or can I somehow pipe the output of '-ev' directly into '-ea'?
> 
> Kind regards,
> 
> Hans


Hi Hans,

ecanormalize file.wav 

should do it for you. ecanormalize is a utility
that comes with ecatools.  

https://eca.cx/ecasound-list/2001/10/0211.html

Joel Roth

--ccdikckun3trw4jx
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Content-Disposition: inline


--ccdikckun3trw4jx
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

_______________________________________________
Ecasound-list mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/ecasound-list

--ccdikckun3trw4jx--