Hi Russ
Great to hear you have found some proper hobby time to bring this project up to date.
If you are providing the option for off-boarding the Audio Master clock, a separate high performance master module with buffered outputs that could run both this device and the Buffalo might be a nice step up.
Thoughts?
Mark
Great to hear you have found some proper hobby time to bring this project up to date.
If you are providing the option for off-boarding the Audio Master clock, a separate high performance master module with buffered outputs that could run both this device and the Buffalo might be a nice step up.
Thoughts?
Mark
I too am interested in trying this, and all I can say right now is maybe. 🙂
Certainly you could use this as input to and output from a DSP given the correct conditions.
You could also use an ADC and use your PC as the DSP. 🙂
So many ideas, so little free time. 😀
Very true! First things first... 🙂
I have no complaints about the quality of the crossover filters that are running in my PC. It just means 3 or 4 stereo USB boards unless an 8 channel version might be offered. ...much more elegant to delegate that job to later in the chain, IMVHO...
All the best for an energizing project, Russ!
Frank
Hi Russ
I didn't see an answer to bunpei's question regarding drivers. What's the situation regarding drivers and operating systems?
I didn't see an answer to bunpei's question regarding drivers. What's the situation regarding drivers and operating systems?
I'm very sorry for my direct posting. Your answer of full clarification made me feel very comfortable! I believe the approach you choiced will surely bring a good result.
May I ask one more?
I guess you must have found a definite advantage of TPS7A4700 comparing to your familiar LT1763 series regulators.
Have you made any fine tuning on the selection of bypass & NR caps used for the regs?
No problem. I know you as a reasonable person. 🙂 I Should have been more specific in my request. Not your fault.
Thanks!
Russ
I won't be writing any custom drivers just yet, but we will offer the Thesycon driver for windows. For mac (recent OS/X) and most flavors of Linux no special driver should be required.
Honestly I need to evaluate it further, but on paper it has much lower noise, and better PSRR. I am happy with it so far.
I will be able to report my better tempered results soon. 🙂
I expect it will perform quite well. From a design perspective, it is a nice part to use because it is simple and easy to configure for multiple projects. It has a ton of up-side. I think TI did a nice job with this one.
Cheers!
Russ
Hi Mark - food for thought. But I think this particular module is useful in it's current incarnation.
Cheers!
Russ
Also...
Mark: I think what Russ is trying to say, is that there might be little to no advantage to incorporating an external master clock. Consider the way he has this board configured (at least as I understand it): the processor (XMOS) is on the USB side, and the (onboard) master clock is on the isolated/output side. the masterclock will be a very good, low phase noise, part, with a clean power supply isolated from the processor and USB noise. The data stream will be re-clocked, directly by the onboard clock, on the isolated/output side. And, master clock output will be available on a u.fl connector to directly clock the Buffalo DAC in synchronous mode. If you distribute the masterclock signal from the board to the B-IIIse via a short u.fl cable, and run the I2S lines on short u.fl cables, you should have sonic performance which is about as good as it gets, with jitter levels fully isolated from the source noise (computer/server) and the processor noise, without having to use the asynchronous sample rate converter onboard the Buffalo.
Mark: I think what Russ is trying to say, is that there might be little to no advantage to incorporating an external master clock. Consider the way he has this board configured (at least as I understand it): the processor (XMOS) is on the USB side, and the (onboard) master clock is on the isolated/output side. the masterclock will be a very good, low phase noise, part, with a clean power supply isolated from the processor and USB noise. The data stream will be re-clocked, directly by the onboard clock, on the isolated/output side. And, master clock output will be available on a u.fl connector to directly clock the Buffalo DAC in synchronous mode. If you distribute the masterclock signal from the board to the B-IIIse via a short u.fl cable, and run the I2S lines on short u.fl cables, you should have sonic performance which is about as good as it gets, with jitter levels fully isolated from the source noise (computer/server) and the processor noise, without having to use the asynchronous sample rate converter onboard the Buffalo.
Hi Russ,
I would love to have this capability, with the endgame objective to be able to utilise the volume control of the Buffalo (2) directly from within windows, without having to use an arduino or similar.
Really glad it's finally all coming together 😀
Cheers,
Phil
Hi Russ,
Great to see the progress you have made! 🙂 you mentioned the raspberry pi a while ago, how are your thoughts on that now?
Maarten
Great to see the progress you have made! 🙂 you mentioned the raspberry pi a while ago, how are your thoughts on that now?
Maarten
I enjoy playing with it. 🙂 I have already done several several audio projects for it.
I think I would probably stick to using it as a host.
For those of us without Arduinos and still waiting for the AC2, this would be a most beneficial feature to say the least.
This is interesting.
I'm looking to put together a multi amped "any speaker" PC setup.
That means all filtering handled by the PC, outputted by USB (8 channels), converted to I2S, feeding a Buffalo3.
Then 8 channels of amplification (a pair of sureelectronic 4x100W tk2050 is a likely candidate).
I figure with that setup, I can get any drivers I like, put them in a box and make them work properly in room with minimal effort.
I hope you don't mind me mentioning this here, but since TPA have such good rep here I don't think it will hurt you. I was looking at the USBStreamer to do the USB-I2S bit, will your board be able to manage it?
I have a lot of respect for your work, and going all TPA sounds preferable if it would work
I'm looking to put together a multi amped "any speaker" PC setup.
That means all filtering handled by the PC, outputted by USB (8 channels), converted to I2S, feeding a Buffalo3.
Then 8 channels of amplification (a pair of sureelectronic 4x100W tk2050 is a likely candidate).
I figure with that setup, I can get any drivers I like, put them in a box and make them work properly in room with minimal effort.
I hope you don't mind me mentioning this here, but since TPA have such good rep here I don't think it will hurt you. I was looking at the USBStreamer to do the USB-I2S bit, will your board be able to manage it?
I have a lot of respect for your work, and going all TPA sounds preferable if it would work
If I focus only on output - omit SPDIF - I could probably do up to 8 channels output only.
The problem is - I definitely want both input and output. 🙂
So perhaps after this module is done - I will turn my energy to an 8 channel output only version.
The problem is - I definitely want both input and output. 🙂
So perhaps after this module is done - I will turn my energy to an 8 channel output only version.
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