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2. Re: Sonograms of long recordings [was nature recordists group]

Subject: 2. Re: Sonograms of long recordings [was nature recordists group]
From: "Bj=F6rn Eriksson" bempa
Date: Sat Jan 28, 2012 4:32 am ((PST))
Hello again!
Had to search a little on this. This is what I fastly came up with...
 (sorry if it was already brought in to the discussion)

Seems Freesound are using some sort of Python script on Freesound. &
Java... I believe. Since I am not a programmer I hardly understand what=B4s
going on here, but found this article which seems to conatins some info on
an application with the use of the Freesound script...

http://research.coquipr.com/?s=3Dspectrogram

/Bj=F6rn

2012/1/28 Bj=F6rn Eriksson <>

> Hello from Sweden!
> Maybe I am missing out some of the original questions about the wave-form
> representations of sounds, but I thought I should just mention the
> wave-form representations used at http://freesound.org/ There are two
> modes, one is more traditional spectrogram and the other (main mode) is
> amplitude + different colors depending of present frequencies. Both modes
> gives a visual and fast reading of what might happen at different section=
s.
> I don=B4t know what the plugins are used and if it is possible to find fo=
r
> applications elsewhere. If someone finds out I am interested to know more
> about that aswell.
>
> Here is a specific sound of a thunderstorm:
> http://www.freesound.org/people/RHumphries/sounds/2525/
>
> All the best,
> Bj=F6rn Eriksson
>
>
> On Tue, Jan 24, 2012 at 6:43 PM, Dan Dugan <> wrote:
>
>> **
>>
>>
>>
>> On Jan 24, 2012, at 4:09 AM, Volker Widmann wrote:
>>
>> > Dan,
>> >
>> > that is great!
>> >
>> > Did you use Sonic Visualiser for that?
>>
>> No, the 24-hour graphic I referenced is published by the Natural Sounds
>> Program Center of the National Park Service in Colorado Springs. They ha=
ve
>> software that makes it up from =E2=85=93-octave data, rather than from a=
udio
>> directly. That process is a legacy of smaller memory capacity in the
>> field--their automated monitoring stations used to record =E2=85=93-octa=
ve data
>> continuously and a few minutes of actual audio every hour. Things are
>> different now, but I don't think they have adapted the software yet to w=
ork
>> with audio files. I wish they would!
>>
>> > Can you go more into detail about the parameters fiddled with?
>>
>> If you get Sonic Visualiser I can send you the parameters I start off
>> with.
>>
>> > I think here a pictures tells more than listening to hours of sound.
>>
>> It sure does!
>>
>> -Dan
>>
>>
>
>









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