Javier
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Digital bytes
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Post by Javier on Sept 23, 2016 9:01:00 GMT
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Post by chinook9 on Sept 23, 2016 15:11:57 GMT
Hello Javier! This looks like it could be interesting. I did some reading on it but I'll have to do a lot more. I'll check it out because I need a couple of projects for this winter and I already have the PS, transformers and enclosure. Couldn't find any kits with dual AK4497. Are you aware of any? |
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Javier
Administrator
Digital bytes
Posts: 987
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Post by Javier on Sept 23, 2016 16:54:41 GMT
Hi Brian! Unfortunately so far I've only found a cheap looking chinese kit I can't quite recommend. If I find something worth taking a look at I'll let you know. The AK4497 may be the to of the range but the AK4490 is no slouch and DIYINHK's kit at $49 is great for testing or playing with it, the USB adapter can be used for you Buffalo or any other DAC as has great pottential. If eventually you get one I suggest you also get the $5 special driver that enables extreme sample rates in both PCM and DSD: www.diyinhk.com/shop/driverdatasheetmanual/109-diyinhk-usb-audio-driver-full-version-and-signed-.htmlCheers |
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Post by chinook9 on Sept 25, 2016 1:54:38 GMT
Do you think I would take much risk using one of the DIYINHK "XMOS DSD DXD 384kHz high-quality USB to I2S/DSD." If this is likely to work OK, I could use most of the components from the AD1862 DAC.
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Javier
Administrator
Digital bytes
Posts: 987
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Post by Javier on Sept 25, 2016 12:25:29 GMT
Do you think I would take much risk using one of the DIYINHK "XMOS DSD DXD 384kHz high-quality USB to I2S/DSD." If this is likely to work OK, I could use most of the components from the AD1862 DAC. Of course you can! I forgot you already had one. The new one is a bit better in that it has a USB isolator and supports some extreme sample rates I don't think you'll need so yes, stick to the one you have. Sent from my GT-I9505 using proboards |
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Post by chinook9 on Sept 26, 2016 0:05:22 GMT
Do you think I would take much risk using one of the DIYINHK "XMOS DSD DXD 384kHz high-quality USB to I2S/DSD." If this is likely to work OK, I could use most of the components from the AD1862 DAC. Of course you can! I forgot you already had one. The new one is a bit better in that it has a USB isolator and supports some extreme sample rates I don't think you'll need so yes, stick to the one you have. Sent from my GT-I9505 using proboards That being the case, I will probably go ahead and try the AK4490 later this year, after I get through with some travels we have planned. |
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Javier
Administrator
Digital bytes
Posts: 987
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Post by Javier on Sept 26, 2016 10:59:10 GMT
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Post by chinook9 on Sept 28, 2016 4:23:11 GMT
Thank you Javier. That's a great place to start. |
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Post by chinook9 on Sept 28, 2016 14:01:07 GMT
Javier, the AK4490 has 6 built in filters. What would be the easiest way to change the selected filter? Do you know which is the default filter?
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Javier
Administrator
Digital bytes
Posts: 987
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Post by Javier on Sept 28, 2016 16:35:26 GMT
In order to access the filter configuration and all other functions available in the chip (eg digital volume) and sofwtare mode in general you need an external micro controller like the arduino family (they are dirt cheap) and then you need to program it, not too difficult if you have some experience but can be a little challenging if you don't.
The micro controller should be connected to the SDA and SCL inputs on the DAC board.
This can also be used with the Buffalo to access all its software mode goodies with the bonus that in tghis case you can find the code already written, fully documented and downloadable at the hifiduino page I pointed to you for the AK4490.
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Post by chinook9 on Sept 28, 2016 18:20:38 GMT
Thanks Javier. I'll start reading up on the Arduino.
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Javier
Administrator
Digital bytes
Posts: 987
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Post by Javier on Sept 29, 2016 7:14:43 GMT
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Post by chinook9 on Sept 29, 2016 13:20:03 GMT
Thanks Javier. Those are just what I was looking for.
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Post by chinook9 on Oct 13, 2016 20:11:34 GMT
I received the AK4490 kit from DIYINHK but I will wait until we get to Arizona before I work on it. Shouldn't take long to get it up and running.
I plan to buy an Arduino starter kit about the same time I start work on the AK4490. I have done some programming, but I need to learn the hardware piece of using Arduino and I figure starting at the bottom is the best way to go. It will take a while.
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Javier
Administrator
Digital bytes
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Post by Javier on Oct 13, 2016 20:52:45 GMT
Other than that you need to understand how DAC chips work, I can send you the ES9018 datasheet which shows all available registers, possible values and an idea of what they do, pair that with the code file from hifiduino and you'll begin to understand how it works. Once you get the idea you can try with the AK4490 as, IIRC, it is easier than the ESS registers.
If you are a little patient I'm sure you'll have plenty fun learning though at the beginning may be somewhat boring and/or exasperating.
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