[tremor] Output signal of the Tremor Codec

Julien Margetts julien.margetts at oxsemi.com
Thu Oct 23 01:01:35 PDT 2003



The output will be RAW be 2's compliment signed PCM data, which is exactly
what you need for I2S. Assuming Tremor scales the output to 16-bit samples,
you can just just pack one from each stereo channel into a 32-bit word, and
load it directly into your 32-bit I2S data shift register.

----- Original Message ----- 
From: "Bertrand Pot" <potbert at students.hevs.ch>
To: <tremor at xiph.org>; <vorbis at xiph.org>
Sent: Thursday, October 23, 2003 8:06 AM
Subject: [tremor] Output signal of the Tremor Codec

<p>> Hi,
>
> I study electricity in the University of Applied Sciences of Western
Switzerland and I just began my diploma work: an embedded Internet Radio
Receiver.
>
> I want to use the Tremor Codec on a ARM7TDMI uc (Samsung S3C4510B). And I
need to convert the decoded Vorbis signal in an I2S bus signal (clk,
word-select, and data) with a CPLD (Xilinx SPARTAN II)
>
> It will be helpfull if someone can explain me the exact form of the output
signal given by the Tremor Codec. I suppose that this is a "raw" signal, but
i don't know exactly how it is.
>
> Thank you for your time and your help!
>
> Bertrand.
> _______________________________
>
> Bertrand Pot - 078/647.63.44
> Visit: http//www.twistedband.ch
> _______________________________
>
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