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+  Rockbox Technical Forums
|-+  Support and General Use
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| | |-+  About H140's Digital I/O
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Author Topic: About H140's Digital I/O  (Read 5307 times)

Offline rufi

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About H140's Digital I/O
« on: August 06, 2006, 03:11:31 AM »
I found H140(rockbox) can play 24bit wav,Is Its Digital out 24bit?
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Offline petur

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Re: About H140's Digital I/O
« Reply #1 on: August 06, 2006, 04:47:35 AM »
Rockbox only does 16bit at the moment
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Offline rufi

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Re: About H140's Digital I/O
« Reply #2 on: August 06, 2006, 04:57:19 AM »
If the modified program is not to export 24bit digital signal? Hardware support this?
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Offline petur

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Re: About H140's Digital I/O
« Reply #3 on: August 06, 2006, 01:28:06 PM »
The playback engine of rockbox outputs 16bit. I'm not aware of patches that increase that.

Internally, the resolution is higher, but I don't know enough of the playback engine to help you out on that...
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Offline puka

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Re: About H140's Digital I/O
« Reply #4 on: August 08, 2006, 01:00:11 PM »
does iriver firmware supprt higher then 16bit?
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Offline rufi

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Re: About H140's Digital I/O
« Reply #5 on: August 09, 2006, 05:07:15 AM »
The original FW does not support 24bit

source->dsp->spdif signal->dac

The Rockbox can control dsp's output,so we can make it output 24bit signal.

I want to know that the hardware support it or not.

Thanks for petur's reply
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Offline Llorean

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Re: About H140's Digital I/O
« Reply #6 on: August 09, 2006, 10:09:41 AM »
I thought the limit of what we could output was 20-bit, 48khz... But don't quote me on it.
And I believe it requires a considerable amount of work to enable this.
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Offline LinusN

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Re: About H140's Digital I/O
« Reply #7 on: August 09, 2006, 11:52:04 AM »
The best we can do is 20 bits 44.1kHz, due to hardware limitations.
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Archos Jukebox 6000, Recorder, FM Recorder/iAudio X5/iriver H1x0, H3x0/Toshiba Gigabeat F20/iPod G5, G5.5

Offline Llorean

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Re: About H140's Digital I/O
« Reply #8 on: August 09, 2006, 11:54:24 AM »
Aah, I don't know where I keep getting the 48 from.
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Offline LinusN

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Re: About H140's Digital I/O
« Reply #9 on: August 09, 2006, 12:18:25 PM »
Well, the Coldfire can *record* at 48kHz using the digital in, but can only play back at 44.1kHz.
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Archos Jukebox 6000, Recorder, FM Recorder/iAudio X5/iriver H1x0, H3x0/Toshiba Gigabeat F20/iPod G5, G5.5

Offline Llorean

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Re: About H140's Digital I/O
« Reply #10 on: August 09, 2006, 12:37:57 PM »
Ah, that must be it.
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Offline rufi

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Re: About H140's Digital I/O
« Reply #11 on: August 10, 2006, 03:30:32 AM »
Oh,48Khz 20bit digital I/O  also is a  attraction to me ;D

We can record  SACD DVD-Audio or LP in high quality.
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