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Author Topic: TTA (True Audio) codec  (Read 2520 times)

Offline dumbears

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TTA (True Audio) codec
« on: April 08, 2008, 07:11:12 AM »
Quote from: BigBambi on April 02, 2008, 08:30:47 AM
Out of interest, what format do you miss?

Sorry for cutting in.  I just saw this post.

I wonder if it's possible to get TTA (True Audio) format into Rockbox.
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Offline markun

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TTA (True Audio) codec
« Reply #1 on: April 08, 2008, 07:31:06 AM »
Quote from: dumbears on April 08, 2008, 07:11:12 AM
I wonder if it's possible to get TTA (True Audio) format into Rockbox.

I think it is. Looks like normal ANSI C without mallocs to me:

http://tta.sourceforge.net/codec.hardware

From their site:

Quote
The True Audio (TTA) - is currently the only lossless codec that accomodates the possibility of real-time hardware encoding.

Doesn't rockbox encode to wavpack in realtime?
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Offline GodEater

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Re: TTA (True Audio) codec
« Reply #2 on: April 08, 2008, 08:13:56 AM »
Last I heard it did yes...
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Read The Manual Please

Offline bascule

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Re: TTA (True Audio) codec
« Reply #3 on: April 08, 2008, 09:43:57 AM »
Quote from: http://tta.sourceforge.net/codec.hardware
The True Audio (TTA) - is currently the only lossless codec that accomodates the possibility of real-time hardware encoding. TTA offers the best performance of any of the lossless codecs that support hardware playback.

I wonder if they mean something else by hardware encoding. This picture from their site seems to indicate that encoding performance is pretty equal, with the exception of FLAC, but they are all well above real-time.



Their quote above also mentions hardware playback (presumably decoding), but with no pictures to back this up. I know that FLAC is slower in encoding because it is specifically designed to be very efficient and therefore lightweight in decoding.
So what exactly do they mean by their claims of super efficiency for hardware support; actual encoder/decoder chips?

* bascule is confused
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DataBase fanboy and author of the totally overhauled Rockbox Sync Tool

Offline Llorean

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Re: TTA (True Audio) codec
« Reply #4 on: April 08, 2008, 10:50:26 AM »
Maybe it means it in the same context as a "real-time OS"?
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Offline saratoga

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Re: TTA (True Audio) codec
« Reply #5 on: April 08, 2008, 11:17:44 AM »
I read "hardware" as "FPGA".
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