USB sound suggestion

[wafflesomd]

DAC? correct me if I'm wrong, but an audio decoder?

The h10 has left/right outputs in the usb port, doesnt this mean anything.

[Llorean]

Okay, maybe you should clarify. Your first suggestion was Digital audio over USB. If it's analog with left and right channels already, that's not digital, nor is it over USB. I guarantee you, an actual USB port does not have "Left" and "Right" channels, so I assume you're talking about the dock connector, which should be called such to avoid confusion.

"Playing through the USB port" is different from "Using the line out pins in the dock connector" by a very long shot.

[wafflesomd]

I mean sound from the line out pins.

[Febs]

It sounds like what you are looking for is an analog line-out through the dock connector.   The dock connector is the way that you access the line-out on an iPod (which is what you identified as your inspiration for this suggestion).  It's true that the dock connector is also used to access USB, but that doesn't mean that the iPod is using USB to access audio.  Some of the pins on the dock connector are used for analog line-out, and others are used for the USB connection.

[wafflesomd]

http://www.audiolineout.com/jumbo/jumbo.html

Check that out, that's where I got my idea.

[Llorean]

So, since this is entirely a hardware mod, what exactly is its relation to Rockbox?

[wafflesomd]

Doesnt the ipod use a similar propriatry usb port?

As it shows, it outputs sound via the line out pins in the usb port.

Possibly the h10 can do this?

But can I assume that it would not just 'work' i you plugged it in?

Something would have to be coded, am I right?

[Llorean]

It depends on how the hardware is configured internally. The DAC may already be providing audio to the line out pins. If anyone has an H10 cradle/dock they can easily check by plugging into the line out port on it and seeing if they get audio.

[wafflesomd]

Well that person will most likely be me

[wafflesomd]

I DID IT!!!!
 
MuwHAHAHAHAHAHA

Ok, all I did was literally, hook up a wire from a 3.5mm cable (in this case, the left channel) straight to pin #4 on the h10 usb cable.

I can provide proof if needed, and will surely document my findings on misticriver.net

So apperently, the h10 and rockbox do simultanuesly output sound to the line-outs and the headphone jack.

[LinusN]

Ok, all I did was literally, hook up a wire from a 3.5mm cable (in this case, the left channel) straight to pin #4 on the h10 usb cable.

Really odd. Pin 4 in a USB cable is Ground.

[Llorean]

He means pin 4 in the H10 dock connector, I assume. He seems incapable of differentiating to two for some unknown reason.

[bluebrother]

Ok, all I did was literally, hook up a wire from a 3.5mm cable (in this case, the left channel) straight to pin #4 on the h10 usb cable.

I really doubt that.

A USB connector (and thus a USB cable) has only digital signals. BUT as the H10 uses a special connector it *is* possible (and it seems to be done) that *that* connector has an output of the analog signal.

Could you please write specific enough? You description is simply misleading as it is not possible to get analog output on a USB connector. Your cable has two ends, and those are different.

[wafflesomd]

And none of you beleive me, ok.

Here, let me say this:

TRY IT YOURSELF

Cuase most likely, you still wont beleive when I publish all this.

None of you have tried this? right?  So how can you claim it doesnt work?

And bluebrother, my description does suck, I know, but it was late, and I was excited.


I'll post a link on misticriver with a worklog once I get new sync cable heads to make actual seperate cables.

[Febs]

We believe that you were able to get sound from the dock connector.  What we don't believe is that the sound has anything whatsoever to do with USB.

A USB CABLE DOES NOT HAVE ANALOG AUDIO OUTPUT!

If what you actually did was to hook up to the DOCK CONNECTOR, then that is perfectly plausible--in fact, it is consistent what we have been saying throughout this entire thread.  We've wasted 2 pages of this thread trying to decipher exactly what it is that you mean, and to help you understand the difference between the USB and the line out, and when we finally figure it out and it seems that everyone is on the same page, you prcoeed to carelessly use the phrase "USB" when you clearly mean something else, throwing the entire thread into confusion once again.