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Subject: Re: PCM files & WAV-MP3

Re: PCM files & WAV-MP3

From: Paul Suade <>
Date: Thu, 29 Aug 2002 13:30:16 +0200

There is a mas plugin but it is not free. So better to forget it.

The only solution is the ability to encode wav or pcm in mp3 in real-time
the fatest way (is there any possibility to encode uncompressed mp3 ?). The
trouble is : can SH1 be able to do such a job ?

----- Original Message -----
From: "Steve Lhomme" <>
To: <>
Sent: Thursday, August 29, 2002 1:10 PM
Subject: Re: PCM files & WAV-MP3

> Nielsen Linus (ext) wrote:
> > Please, please, please read the FAQ:
> I did already.
> Search for "PCM" : none
> Search for "WAV" : none
> only :
> "18 I don't see you mentioning other file types on your list of ideas.
> What about supporting those?
> Pessimist's Answer: At the current time we belive this is not very
> likely The Micronas chip (MAS3507) decoder in the archos does not
> natively support decoding and there is very little program space in the
> player to implement it ourselves. The alternative would be to write a
> software decoder as part of the RockBox firmware. However, as much as we
> love our players, the computing power of the Archos (SH1
> microcontroller) is not fully sufficent for this need.
> Optimist's Answer: We can play any format if only we can write code for
> the DSP to decode it. The MAS 3507 (and 3587) are generic DSPs that
> simply have MP3 codecs in ROM. We can download new codecs in them and we
> will be the first to celebrate if we can get OGG or FLAC or anything
> into these DSPs. Unfortunately, we have no docs or tools for writing new
> MAS DSP code and Intermetall is very secretive about it. If anyone can
> help, please get in touch! "
> I'm not talking about decoding here, since the data are already in the
> decoded format (PCM). And also no mention of the WAV container that can
> be seen a ID3v0 (remove the header).
Received on 2002-08-29

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