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XMOS-based Asynchronous USB to I2S interface
XMOS-based Asynchronous USB to I2S interface
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Old 3rd July 2017, 11:43 PM   #3131
Lorien is offline Lorien
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Hello Felipe! Due to hardware limitations WaveIO does only run in unidirectional way: from PC to DAC(s). There's no way to overcome this from firmware.. at least not without a new hardware support but for actual board this bidirectional data transfer is impossible.
Kind regards,
L
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Old 7th July 2017, 05:29 AM   #3132
luxury54 is offline luxury54  Romania
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Hi Lorien, I saw that you provided a new firmware some time ago, so my question would be is this xmos board being able to deliver the japan Sony/EIAJ format instead of Philips/I2S if someone would wish to fed such DAC that doesn't accept I2S? glue logic to transform I2S to EIAJ is out of question, I was thinking xmos is powerful enough to handle this in the firmware, thanks
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Old 7th July 2017, 08:40 AM   #3133
Extreme_Boky is offline Extreme_Boky
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I installed one of these at the J13 connector (+5V DC in connector), with a MAJOR sound improvement:

LT3045-78XX Ultra Low Noise LDO Voltage Regulator

The sound improvement was substantial and obvious - very nice, spacious sound with a good harmonic richness that can be quite faithful to how the instruments do sound in real life. The bass gained completely new dimension. I could finally hear the bass guitars and drums the way they are supposed to sound.

I also have nothing but great praises for Alexey who makes and supplied these voltage regulators (he does many variants....). The quality is superb, the cost very reasonable, shipping very fast and he is very easy to communicate with. He is also willing to make the non-standard V-out versions, and as per my custom request for the 5.2V-out version, he is now providing them on his website to choose from a drop-down list.

I strongly suggest to everyone who uses the WaveI/O board to try one of these ultra-low noise regulators and enjoy the sound benefit, which is truly unbelievable.

Nick
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Old 7th July 2017, 11:46 AM   #3134
carsten.witt is offline carsten.witt  Germany
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Quote:
Originally Posted by luxury54 View Post
... so my question would be is this xmos board being able to deliver the japan Sony/EIAJ format instead of Philips/I2S ...
That would be a really nice feature.
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Old 7th July 2017, 12:34 PM   #3135
carsten.witt is offline carsten.witt  Germany
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To late to edit ...


An externally hosted image should be here but it is no longer accessible. Please upload images instead of linking to them to prevent this.
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Old 8th July 2017, 06:24 AM   #3136
luxury54 is offline luxury54  Romania
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may I ask where from have you sourced that adapter?
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Old 8th July 2017, 06:59 AM   #3137
inMotion is offline inMotion  Germany
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Quote:
Originally Posted by Extreme_Boky View Post
I installed one of these at the J13 connector (+5V DC in connector), with a MAJOR sound improvement:

LT3045-78XX Ultra Low Noise LDO Voltage Regulator
The regulator is rated for 500mA only. I remember that under heavy load (384kHZ) WaveIO will need more current?
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Old 8th July 2017, 09:40 AM   #3138
Extreme_Boky is offline Extreme_Boky
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The maximum current draw I was able to measure was 380mA. This was with a 192kHz signal. The LT3045 has no issues whatsoever to drive this current. Mine is set for 5.21V DC out, The input voltage can be as high as 7V. It only requires around 5.6V at its input to provide correct regulation.

The whole regulator is so well made that the chip itself gets mildly warm even without the heatsink.

The sound improvement is simply unbelievable.
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Old 8th July 2017, 10:05 AM   #3139
Extreme_Boky is offline Extreme_Boky
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I have just confirmed that even with 384kHz sampling rate signals, the current is around 390mA, so the difference between 192 and 384 current consumption is negligible. This is all measured with an LED array connected.

I have LED array disconnected because the WaveI/O sounds better without this array.

The current "saving" with LED array disconnected is 30-40mA, not that it matters because the LT3045 will handle LED's connected no trouble at all.
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Old 8th July 2017, 01:26 PM   #3140
carsten.witt is offline carsten.witt  Germany
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Hi,

Quote:
Originally Posted by luxury54 View Post
may I ask where from have you sourced that adapter?
sorry, but i don't remember, i bought it online at a diy audio components page very long time ago.
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