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Author Topic: TPDF Dithering  (Read 4130 times)

Blaine78

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TPDF Dithering
« on: September 27, 2015, 12:37:15 am »

Hi. I'm using a Rega DAC R USB. I believe the Rega is a 24bit DAC, but using 32bit for it's ASIO connection. Under ASIO options, checked 'Device uses only most significant 24 bits', does this mean audio will be dithered to 24bit using TPDF down a 32bit connection if TPDF is selected for dithering?
Thanks
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Windows 10 | Sony 55W805C TV | Metrum Acoustics Musette DAC | Luxman L-550AX | PMC Twenty.23

Hendrik

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Re: TPDF Dithering
« Reply #1 on: September 27, 2015, 03:38:59 am »

Hi. I'm using a Rega DAC R USB. I believe the Rega is a 24bit DAC, but using 32bit for it's ASIO connection. Under ASIO options, checked 'Device uses only most significant 24 bits', does this mean audio will be dithered to 24bit using TPDF down a 32bit connection if TPDF is selected for dithering?

Yes, it will. Thats exactly what the option in the ASIO settings is for, as many DACs have this particular behavior - only accept 24-bit, but their ASIO driver still requests 32.
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Blaine78

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Re: TPDF Dithering
« Reply #2 on: September 27, 2015, 04:36:22 am »

Thanks very much Hendrik.
I'm guessing the Rega is true 24bit, even though the DAC chipset can handle 32bit, Rega specs writes it accepts up to 24 bits on all inputs.
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Windows 10 | Sony 55W805C TV | Metrum Acoustics Musette DAC | Luxman L-550AX | PMC Twenty.23
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