Support and General Use > Recording

H120: Do you like AGC?...

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petur:

--- Quote from: MikeS on October 20, 2006, 02:48:56 PM ---My real question was with some implementation particulars and the fact that it's in the hardware already. Why burn CPU cycles on it if the task can be delegated elsewhere on anything with a UDA1380?
--- End quote ---

As I wrote today already: AFAIK, the UDA AGC is only available for (mono) internal mic, not line-in.

jhMikeS:
Sorry. Neglected to read that. Been scrambling around a lot lately.

I can't see in the UDA1380 datasheet that the AGC block is only available to the mic. It's after analog front end and it just says that it _can_ be used for keeping mic at a constant level which is a bit ambiguous.

I wouldn't dream of removing or crippling the functionality so no worry. I'd only look into improving it and possibly freeing up CPU resources. The use of the global_settings recording level to store temporary gain levels is a bit odd IMO but changing that wouldn't cripple or affect it in any way.

I'm picking up an H120 soon so I'll be able to verify anything I change re: the UDA, SPDIF, and AGC (hw or sw) thoroughly myself.

petur:
Mike,

Let me take back all I said earlier (should have re-read the datasheet)

the AGC in the UDA works indeed on both inputs, but it only operates on the decimator, so I don't think it's of any use.

I must have messed it up with the VGA/PGA difference bewteen mic and line-in in my poor memory.

Sorry for the confusion and nice to hear you're getting an h120 ;)

jhMikeS:

--- Quote from: petur on October 21, 2006, 07:38:01 AM ---...nice to hear you're getting an h120 ;)

--- End quote ---

I don't doubt that since I won't be bugging you to test iRiver stuff all the time!  ;D
Should be here in a few days.   :)

Arni:
i think i got the last available NEW iriver H140 yesterday from south korea!
its NEW with remote control and leather case etc.
235€ shipping included.

i copied the H120(my 1st iriver) harddisk content to the new H140´s harddisk made the firmware upgrade and voilá, all was fine and rockbox+my files were on my new H140!

am glad for having a 2nd of this awesome devices!

now all new h140 seem being sold on ebay....some refurbished h120 from australia are still available...got my h120 from this ebay seller in australia some weeks ago.

will use the h120 for taping shows and the h140 for recording from cable-radio at home.

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