Thanks Antonio for the reply,
Did you use ready library (e.g. in C code) to compress audio ?. In fact, i am
searching for a quick solution to compress audio samples as of the type uint_16
which are in PCM raw format.
Regards,
Mash'al
________________________________
From: Antonio Liñán C. <[email protected]>
To: Mashal al-shboul <[email protected]>
Cc: "[email protected]" <[email protected]>
Sent: Monday, February 13, 2012 9:02 AM
Subject: Re: [Tinyos-help] Need for help
You should search instead compression algorithms commonly used for audio
signals. There are many algorithms and papers about it if you google'd
a little (I ported some lossy and lossless compression algorithms for
the MicaZ for my MsC thesis, there's plenty of bibliography).
Off the top of my head:
http://sites.google.com/site/cmsadler/sensys06_compress.pdf?attredirects=0
You have to do your homework :)
--Antonio.
On Mon, 2012-02-13 at 17:41 +0100, Sergio Valcarcel wrote:
> Nope sorry. I have no idea about audio compression beyond the basics,
> and I have never implemented it.
>
>
> Neither do I know anything about the IIP. However if IIP is an
> instruction set, it will be processor dependent, so it may be the case
> that many architectures and cores that are ported to Tiny OS do not
> offer it. Check it out!
>
>
> Cheers!
> Sergio
>
> On Mon, Feb 13, 2012 at 5:35 PM, Mashal al-shboul
> <[email protected]> wrote:
> Hi Sergio,
> Thank you for the reply.
> Actually i am interested in compressing audio samples in C
> since it is supported in tinyOS and nesC, so i would be
> grateful to you if you tell about such techniques to compress
> data locally in a sensor node before transmission. Have you
> heard about Intel IIP for that ?!
>
>
>
>
>
> ______________________________________________________________
> From: Sergio Valcarcel <[email protected]>
> To: Mashal al-shboul <[email protected]>
> Cc: "[email protected]"
> <[email protected]>
> Sent: Monday, February 13, 2012 7:43 AM
> Subject: Re: [Tinyos-help] Need for help
>
>
> Hi,
>
>
> no idea at all.
>
>
> Probably you are interested in developing using the
> programming model of Tiny OS.
> On one hand that would be great in order to have available
> more signal processing components (like audio compression).
> But on the other hand I found that it takes quite a lot of
> time at the beginning and it is also difficult to debug.
>
>
> Otherwise, what I did for signal processing is to use standard
> C functions. Check the mailing list if you are interested in
> know how to link them.
>
>
> Cheers!
> Sergio
>
>
>
>
> On Mon, Feb 13, 2012 at 8:50 AM, Mashal al-shboul
> <[email protected]> wrote:
> Hi All,
>
>
> I need a help in data compression in tinyOS and nesC.
> has anyone of you tried compression (especially for
> audio format) ?. do you know anything about using
> Intel Integrated Performance Primitives (IIP ) for
> compression ?
>
>
> any help is good for me, thanks in advance
>
>
> Regards,
> Mash'al
>
> _______________________________________________
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> [email protected]
>
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>
>
>
>
>
>
>
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