USB Audio Player PRO (UAPP): 24- and 32-bit playback, ubiquitous USB audio support for Android
Oct 22, 2019 at 7:33 AM Post #3,136 of 5,544

superuser1

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The Hiby R5 is not supported at all. The config file does not state a HiRes mode AFAIK and can only be accessed by system apps using ALSA directly. Perhaps things changed, but that's the last thing I heard from it.
Any chance it will be or is it a complete no go? How about dx160?
 
Oct 22, 2019 at 9:21 AM Post #3,138 of 5,544

superuser1

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If it is like I describe, then it's a no go. I have no information about the DX160, perhaps Lurker can answer that.
I'm sorry i missed it if you described what the problem is ... is it something to do with the DTA audio that Hiby has implemented. I was actually thinking of asking @Lurker0 about the dx160
 
Oct 22, 2019 at 9:26 AM Post #3,139 of 5,544

Davy Wentzler

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I'm sorry i missed it if you described what the problem is ... is it something to do with the DTA audio that Hiby has implemented. I was actually thinking of asking @Lurker0 about the dx160

I have no idea what DTA is, but if it requires the app to be a system app and use ALSA, then it's a no.
 
Oct 22, 2019 at 9:47 AM Post #3,140 of 5,544

1000ROUNDZ

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I have no idea what DTA is, but if it requires the app to be a system app and use ALSA, then it's a no.
Hello @Davy Wentzler

Here's the explanation of DTA by Hiby: "Direct Transport Architecture, Android sample rate conversion bypass. Its DTA Android global lossless output technology ensures that sound output and reception can no longer be interfered with."

Any chance for having the R5 supported?
 
Oct 22, 2019 at 10:20 AM Post #3,141 of 5,544

Davy Wentzler

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Hello @Davy Wentzler

Here's the explanation of DTA by Hiby: "Direct Transport Architecture, Android sample rate conversion bypass. Its DTA Android global lossless output technology ensures that sound output and reception can no longer be interfered with."

Any chance for having the R5 supported?

I really should think of some names for UAPP like that. I'm sorry, it's meaningless. It can still use ALSA as a system app.The R6 is supported by our super duper DTA system as well. :)
 
Oct 22, 2019 at 8:57 PM Post #3,142 of 5,544

Joe Bloggs

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I really should think of some names for UAPP like that. I'm sorry, it's meaningless. It can still use ALSA as a system app.The R6 is supported by our super duper DTA system as well. :)
Hey Davy,

It means all HiBys support Hi-Res playback without requiring use of a hi-res driver as follows:
All you guys need to do to have UAPP play in high res (without enabling hi-res in UAPP) is
1. Go to Settings->Android Audio
2. Enable "Play through Android"
3. Set "Android sample rate" to "Variable".

We re-engineered the Android back end so that it does not resample or touch the audio going from any standard Android app to the DAC as long as there's just one main audio stream playing. Your app doesn't need to look for a special HiRes mode nor is there a special HiRes mode for it to look for.
 
Oct 23, 2019 at 2:25 AM Post #3,143 of 5,544

Davy Wentzler

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Hey Davy,

It means all HiBys support Hi-Res playback without requiring use of a hi-res driver as follows:


We re-engineered the Android back end so that it does not resample or touch the audio going from any standard Android app to the DAC as long as there's just one main audio stream playing. Your app doesn't need to look for a special HiRes mode nor is there a special HiRes mode for it to look for.

Thanks for the explanation. This wouldn't allow bit perfect playback though. Since the R6 there is a HiRes direct mode.
 
Oct 23, 2019 at 3:12 AM Post #3,144 of 5,544

Lurker0

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It means all HiBys support Hi-Res playback without requiring use of a hi-res driver as follows:
How would it help to play 24 or 32 bits PCM bit perfect, if AudioFormat does not support corresponding Encodings?
 
Oct 23, 2019 at 5:20 AM Post #3,145 of 5,544

Joe Bloggs

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How would it help to play 24 or 32 bits PCM bit perfect, if AudioFormat does not support corresponding Encodings?
Please use ENCODING_PCM_FLOAT or pcm_offload
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Oct 23, 2019 at 5:57 AM Post #3,147 of 5,544

Joe Bloggs

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Oct 23, 2019 at 6:37 AM Post #3,148 of 5,544

Lurker0

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Oct 23, 2019 at 7:07 AM Post #3,149 of 5,544

Joe Bloggs

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This may work for 24-bit samples, but does not work for 32-bit samples.
There's neither an ADC nor a DAC on earth that can resolve over 24 bits per sample. I gave up arguing what is audible and what isn't when I signed up for this job but I draw the line at contorting the audio chain for things that can't even make any difference on any measurement instrument known to man, that by definition cannot make any measurable difference on any instrument that doesn't violate Heisenberg's uncertainty principle.
 

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