Hello All,
i have some audio files that i would normalize to a amplitude value
(is exactly normalize?).
I would like that all my files have maximum amplitude, or a little less
than.
I have tried scale utility but i'm not able to understand how exactly works.
i.e. with scale -f -W -P 80 i have a costant gain of 80%, but if my file
is yet at max amplitude then it will be distorted, am i right?
For example i want all file at 0.9 with 0dbfs=1.
So how can i do?

Thanks,
ciao,
francesco. 



--
View this message in context: http://csound.1045644.n5.nabble.com/normalizing-audio-files-tp5718864.html
Sent from the Csound - General mailing list archive at Nabble.com.

you could write a bit of Csound code to do that.

opcode MaxAmp,k,S

setksmps 1
kmax init 0
kcount init 0

Sfile xin

ilen filelen S1
ichn filechns S1

kend = (ilen/ichn)*sr

start:
a1 soundin S1
k1 downsamp a1
if k1 > kmax then
kmax = k1
endif
kcount = kcount + 1
if kcount == kend kgoto end
kgoto start:

end:
    xout kmax

endop

instr 1

kmax MaxAmp "myfile.wav"

/* do the normalisation here */
...

endin

Something like this. Of course, completely untested, but you should be able to get it working if needs adjusting.


 
On 17 Dec 2012, at 12:30, francesco wrote:

> Hello All,
> i have some audio files that i would normalize to a amplitude value
> (is exactly normalize?).
> I would like that all my files have maximum amplitude, or a little less
> than.
> I have tried scale utility but i'm not able to understand how exactly works.
> i.e. with scale -f -W -P 80 i have a costant gain of 80%, but if my file
> is yet at max amplitude then it will be distorted, am i right?
> For example i want all file at 0.9 with 0dbfs=1.
> So how can i do?
> 
> Thanks,
> ciao,
> francesco. 
> 
> 
> 
> --
> View this message in context: http://csound.1045644.n5.nabble.com/normalizing-audio-files-tp5718864.html
> Sent from the Csound - General mailing list archive at Nabble.com.
> 
> 
> Send bugs reports to the Sourceforge bug tracker
>            https://sourceforge.net/tracker/?group_id=81968&atid=564599
> Discussions of bugs and features can be posted here
> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"
> 

Dr Victor Lazzarini
Senior Lecturer
Dept. of Music
NUI Maynooth Ireland
tel.: +353 1 708 3545
Victor dot Lazzarini AT nuim dot ie

I use scale for this.  Run once to get the max amplification; and then
scal eit

Or I use audacity....

> Hello All,
> i have some audio files that i would normalize to a amplitude value
> (is exactly normalize?).
> I would like that all my files have maximum amplitude, or a little less
> than.
> I have tried scale utility but i'm not able to understand how exactly
> works.
> i.e. with scale -f -W -P 80 i have a costant gain of 80%, but if my file
> is yet at max amplitude then it will be distorted, am i right?
> For example i want all file at 0.9 with 0dbfs=1.
> So how can i do?
>
> Thanks,
> ciao,
> francesco.
>
>
>
> --
> View this message in context:
> http://csound.1045644.n5.nabble.com/normalizing-audio-files-tp5718864.html
> Sent from the Csound - General mailing list archive at Nabble.com.
>
>
> Send bugs reports to the Sourceforge bug tracker
>             https://sourceforge.net/tracker/?group_id=81968&atid=564599
> Discussions of bugs and features can be posted here
> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe
> csound"
>
>
>
>

How about setting

0dbfs=1.1

Run the score in Qt, check the log to make sure no samples are out of range, 
if out of range, increment 0dbfs (eg set 0dbfs=1.2)...goto start.

Finally run the score to save the output to a file, and hey presto, you have 
a file with a lower maximum amplitude.

Or, Maybe I don't quite understand your problem?

All the best,

Jacques


----- Original Message ----- 
From: "francesco" 
To: 
Sent: Monday, December 17, 2012 12:30 PM
Subject: [Csnd] normalizing audio files


> Hello All,
> i have some audio files that i would normalize to a amplitude value
> (is exactly normalize?).
> I would like that all my files have maximum amplitude, or a little less
> than.
> I have tried scale utility but i'm not able to understand how exactly 
> works.
> i.e. with scale -f -W -P 80 i have a costant gain of 80%, but if my file
> is yet at max amplitude then it will be distorted, am i right?
> For example i want all file at 0.9 with 0dbfs=1.
> So how can i do?
>
> Thanks,
> ciao,
> francesco.
>
>
>
> --
> View this message in context: 
> http://csound.1045644.n5.nabble.com/normalizing-audio-files-tp5718864.html
> Sent from the Csound - General mailing list archive at Nabble.com.
>
>
> Send bugs reports to the Sourceforge bug tracker
>            https://sourceforge.net/tracker/?group_id=81968&atid=564599
> Discussions of bugs and features can be posted here
> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe 
> csound"
> 

what about using the filepeak opcode?

Am 17.12.2012 13:46, schrieb Victor Lazzarini:
> you could write a bit of Csound code to do that.
>
> opcode MaxAmp,k,S
>
> setksmps 1
> kmax init 0
> kcount init 0
>
> Sfile xin
>
> ilen filelen S1
> ichn filechns S1
>
> kend = (ilen/ichn)*sr
>
> start:
> a1 soundin S1
> k1 downsamp a1
> if k1 > kmax then
> kmax = k1
> endif
> kcount = kcount + 1
> if kcount == kend kgoto end
> kgoto start:
>
> end:
>      xout kmax
>
> endop
>
> instr 1
>
> kmax MaxAmp "myfile.wav"
>
> /* do the normalisation here */
> ...
>
> endin
>
> Something like this. Of course, completely untested, but you should be able to get it working if needs adjusting.
>
>
>
> On 17 Dec 2012, at 12:30, francesco wrote:
>
>> Hello All,
>> i have some audio files that i would normalize to a amplitude value
>> (is exactly normalize?).
>> I would like that all my files have maximum amplitude, or a little less
>> than.
>> I have tried scale utility but i'm not able to understand how exactly works.
>> i.e. with scale -f -W -P 80 i have a costant gain of 80%, but if my file
>> is yet at max amplitude then it will be distorted, am i right?
>> For example i want all file at 0.9 with 0dbfs=1.
>> So how can i do?
>>
>> Thanks,
>> ciao,
>> francesco.
>>
>>
>>
>> --
>> View this message in context: http://csound.1045644.n5.nabble.com/normalizing-audio-files-tp5718864.html
>> Sent from the Csound - General mailing list archive at Nabble.com.
>>
>>
>> Send bugs reports to the Sourceforge bug tracker
>>             https://sourceforge.net/tracker/?group_id=81968&atid=564599
>> Discussions of bugs and features can be posted here
>> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"
>>
>
> Dr Victor Lazzarini
> Senior Lecturer
> Dept. of Music
> NUI Maynooth Ireland
> tel.: +353 1 708 3545
> Victor dot Lazzarini AT nuim dot ie
>
>
>
>
>
> Send bugs reports to the Sourceforge bug tracker
>              https://sourceforge.net/tracker/?group_id=81968&atid=564599
> Discussions of bugs and features can be posted here
> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"
>
>

> editor). Assuming you want your tracks normalized, don't do it for 0
> dBFS as this could cause problems with some playback systems. Use -3
> dBFS instead

Yeah, if you want to lose the "loudness war" :)

yes, RTFM to me.
On 18 Dec 2012, at 16:56, joachim heintz wrote:

> what about using the filepeak opcode?
> 
> Am 17.12.2012 13:46, schrieb Victor Lazzarini:
>> you could write a bit of Csound code to do that.
>> 
>> opcode MaxAmp,k,S
>> 
>> setksmps 1
>> kmax init 0
>> kcount init 0
>> 
>> Sfile xin
>> 
>> ilen filelen S1
>> ichn filechns S1
>> 
>> kend = (ilen/ichn)*sr
>> 
>> start:
>> a1 soundin S1
>> k1 downsamp a1
>> if k1 > kmax then
>> kmax = k1
>> endif
>> kcount = kcount + 1
>> if kcount == kend kgoto end
>> kgoto start:
>> 
>> end:
>>     xout kmax
>> 
>> endop
>> 
>> instr 1
>> 
>> kmax MaxAmp "myfile.wav"
>> 
>> /* do the normalisation here */
>> ...
>> 
>> endin
>> 
>> Something like this. Of course, completely untested, but you should be able to get it working if needs adjusting.
>> 
>> 
>> 
>> On 17 Dec 2012, at 12:30, francesco wrote:
>> 
>>> Hello All,
>>> i have some audio files that i would normalize to a amplitude value
>>> (is exactly normalize?).
>>> I would like that all my files have maximum amplitude, or a little less
>>> than.
>>> I have tried scale utility but i'm not able to understand how exactly works.
>>> i.e. with scale -f -W -P 80 i have a costant gain of 80%, but if my file
>>> is yet at max amplitude then it will be distorted, am i right?
>>> For example i want all file at 0.9 with 0dbfs=1.
>>> So how can i do?
>>> 
>>> Thanks,
>>> ciao,
>>> francesco.
>>> 
>>> 
>>> 
>>> --
>>> View this message in context: http://csound.1045644.n5.nabble.com/normalizing-audio-files-tp5718864.html
>>> Sent from the Csound - General mailing list archive at Nabble.com.
>>> 
>>> 
>>> Send bugs reports to the Sourceforge bug tracker
>>>            https://sourceforge.net/tracker/?group_id=81968&atid=564599
>>> Discussions of bugs and features can be posted here
>>> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"
>>> 
>> 
>> Dr Victor Lazzarini
>> Senior Lecturer
>> Dept. of Music
>> NUI Maynooth Ireland
>> tel.: +353 1 708 3545
>> Victor dot Lazzarini AT nuim dot ie
>> 
>> 
>> 
>> 
>> 
>> Send bugs reports to the Sourceforge bug tracker
>>             https://sourceforge.net/tracker/?group_id=81968&atid=564599
>> Discussions of bugs and features can be posted here
>> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"
>> 
>> 
> 
> 
> Send bugs reports to the Sourceforge bug tracker
>           https://sourceforge.net/tracker/?group_id=81968&atid=564599
> Discussions of bugs and features can be posted here
> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"
> 

Dr Victor Lazzarini
Senior Lecturer
Dept. of Music
NUI Maynooth Ireland
tel.: +353 1 708 3545
Victor dot Lazzarini AT nuim dot ie

sorry, what is RTFM? Real Time Frequency Modulation? or a marriage 
between HRTF and Thunder File Management?
well, this first question is serious; thanks for a clarification -
	j

Am 19.12.2012 00:11, schrieb Victor Lazzarini:
> yes, RTFM to me.
> On 18 Dec 2012, at 16:56, joachim heintz wrote:
>
>> what about using the filepeak opcode?
>>
>> Am 17.12.2012 13:46, schrieb Victor Lazzarini:
>>> you could write a bit of Csound code to do that.
>>>
>>> opcode MaxAmp,k,S
>>>
>>> setksmps 1
>>> kmax init 0
>>> kcount init 0
>>>
>>> Sfile xin
>>>
>>> ilen filelen S1
>>> ichn filechns S1
>>>
>>> kend = (ilen/ichn)*sr
>>>
>>> start:
>>> a1 soundin S1
>>> k1 downsamp a1
>>> if k1 > kmax then
>>> kmax = k1
>>> endif
>>> kcount = kcount + 1
>>> if kcount == kend kgoto end
>>> kgoto start:
>>>
>>> end:
>>>      xout kmax
>>>
>>> endop
>>>
>>> instr 1
>>>
>>> kmax MaxAmp "myfile.wav"
>>>
>>> /* do the normalisation here */
>>> ...
>>>
>>> endin
>>>
>>> Something like this. Of course, completely untested, but you should be able to get it working if needs adjusting.
>>>
>>>
>>>
>>> On 17 Dec 2012, at 12:30, francesco wrote:
>>>
>>>> Hello All,
>>>> i have some audio files that i would normalize to a amplitude value
>>>> (is exactly normalize?).
>>>> I would like that all my files have maximum amplitude, or a little less
>>>> than.
>>>> I have tried scale utility but i'm not able to understand how exactly works.
>>>> i.e. with scale -f -W -P 80 i have a costant gain of 80%, but if my file
>>>> is yet at max amplitude then it will be distorted, am i right?
>>>> For example i want all file at 0.9 with 0dbfs=1.
>>>> So how can i do?
>>>>
>>>> Thanks,
>>>> ciao,
>>>> francesco.
>>>>
>>>>
>>>>
>>>> --
>>>> View this message in context: http://csound.1045644.n5.nabble.com/normalizing-audio-files-tp5718864.html
>>>> Sent from the Csound - General mailing list archive at Nabble.com.
>>>>
>>>>
>>>> Send bugs reports to the Sourceforge bug tracker
>>>>             https://sourceforge.net/tracker/?group_id=81968&atid=564599
>>>> Discussions of bugs and features can be posted here
>>>> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"
>>>>
>>>
>>> Dr Victor Lazzarini
>>> Senior Lecturer
>>> Dept. of Music
>>> NUI Maynooth Ireland
>>> tel.: +353 1 708 3545
>>> Victor dot Lazzarini AT nuim dot ie
>>>
>>>
>>>
>>>
>>>
>>> Send bugs reports to the Sourceforge bug tracker
>>>              https://sourceforge.net/tracker/?group_id=81968&atid=564599
>>> Discussions of bugs and features can be posted here
>>> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"
>>>
>>>
>>
>>
>> Send bugs reports to the Sourceforge bug tracker
>>            https://sourceforge.net/tracker/?group_id=81968&atid=564599
>> Discussions of bugs and features can be posted here
>> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"
>>
>
> Dr Victor Lazzarini
> Senior Lecturer
> Dept. of Music
> NUI Maynooth Ireland
> tel.: +353 1 708 3545
> Victor dot Lazzarini AT nuim dot ie
>
>
>
>
>
> Send bugs reports to the Sourceforge bug tracker
>              https://sourceforge.net/tracker/?group_id=81968&atid=564599
> Discussions of bugs and features can be posted here
> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"
>
>

el 2012-12-19 a las 09:56 joachim heintz escribió:

> sorry, what is RTFM?

Read The Fine Manual, of course. i think some people say that the F stands
for something else, but i can't imagine what it could be...

RTFM: read the f***ing manual.
On 19 Dec 2012, at 08:56, joachim heintz wrote:

> sorry, what is RTFM? Real Time Frequency Modulation? or a marriage between HRTF and Thunder File Management?
> well, this first question is serious; thanks for a clarification -
> 	j
> 
> Am 19.12.2012 00:11, schrieb Victor Lazzarini:
>> yes, RTFM to me.
>> On 18 Dec 2012, at 16:56, joachim heintz wrote:
>> 
>>> what about using the filepeak opcode?
>>> 
>>> Am 17.12.2012 13:46, schrieb Victor Lazzarini:
>>>> you could write a bit of Csound code to do that.
>>>> 
>>>> opcode MaxAmp,k,S
>>>> 
>>>> setksmps 1
>>>> kmax init 0
>>>> kcount init 0
>>>> 
>>>> Sfile xin
>>>> 
>>>> ilen filelen S1
>>>> ichn filechns S1
>>>> 
>>>> kend = (ilen/ichn)*sr
>>>> 
>>>> start:
>>>> a1 soundin S1
>>>> k1 downsamp a1
>>>> if k1 > kmax then
>>>> kmax = k1
>>>> endif
>>>> kcount = kcount + 1
>>>> if kcount == kend kgoto end
>>>> kgoto start:
>>>> 
>>>> end:
>>>>     xout kmax
>>>> 
>>>> endop
>>>> 
>>>> instr 1
>>>> 
>>>> kmax MaxAmp "myfile.wav"
>>>> 
>>>> /* do the normalisation here */
>>>> ...
>>>> 
>>>> endin
>>>> 
>>>> Something like this. Of course, completely untested, but you should be able to get it working if needs adjusting.
>>>> 
>>>> 
>>>> 
>>>> On 17 Dec 2012, at 12:30, francesco wrote:
>>>> 
>>>>> Hello All,
>>>>> i have some audio files that i would normalize to a amplitude value
>>>>> (is exactly normalize?).
>>>>> I would like that all my files have maximum amplitude, or a little less
>>>>> than.
>>>>> I have tried scale utility but i'm not able to understand how exactly works.
>>>>> i.e. with scale -f -W -P 80 i have a costant gain of 80%, but if my file
>>>>> is yet at max amplitude then it will be distorted, am i right?
>>>>> For example i want all file at 0.9 with 0dbfs=1.
>>>>> So how can i do?
>>>>> 
>>>>> Thanks,
>>>>> ciao,
>>>>> francesco.
>>>>> 
>>>>> 
>>>>> 
>>>>> --
>>>>> View this message in context: http://csound.1045644.n5.nabble.com/normalizing-audio-files-tp5718864.html
>>>>> Sent from the Csound - General mailing list archive at Nabble.com.
>>>>> 
>>>>> 
>>>>> Send bugs reports to the Sourceforge bug tracker
>>>>>            https://sourceforge.net/tracker/?group_id=81968&atid=564599
>>>>> Discussions of bugs and features can be posted here
>>>>> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"
>>>>> 
>>>> 
>>>> Dr Victor Lazzarini
>>>> Senior Lecturer
>>>> Dept. of Music
>>>> NUI Maynooth Ireland
>>>> tel.: +353 1 708 3545
>>>> Victor dot Lazzarini AT nuim dot ie
>>>> 
>>>> 
>>>> 
>>>> 
>>>> 
>>>> Send bugs reports to the Sourceforge bug tracker
>>>>             https://sourceforge.net/tracker/?group_id=81968&atid=564599
>>>> Discussions of bugs and features can be posted here
>>>> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"
>>>> 
>>>> 
>>> 
>>> 
>>> Send bugs reports to the Sourceforge bug tracker
>>>           https://sourceforge.net/tracker/?group_id=81968&atid=564599
>>> Discussions of bugs and features can be posted here
>>> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"
>>> 
>> 
>> Dr Victor Lazzarini
>> Senior Lecturer
>> Dept. of Music
>> NUI Maynooth Ireland
>> tel.: +353 1 708 3545
>> Victor dot Lazzarini AT nuim dot ie
>> 
>> 
>> 
>> 
>> 
>> Send bugs reports to the Sourceforge bug tracker
>>             https://sourceforge.net/tracker/?group_id=81968&atid=564599
>> Discussions of bugs and features can be posted here
>> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"
>> 
>> 
> 
> 
> Send bugs reports to the Sourceforge bug tracker
>           https://sourceforge.net/tracker/?group_id=81968&atid=564599
> Discussions of bugs and features can be posted here
> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"
> 

Dr Victor Lazzarini
Senior Lecturer
Dept. of Music
NUI Maynooth Ireland
tel.: +353 1 708 3545
Victor dot Lazzarini AT nuim dot ie