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96/24 on DACmagic

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nocrapman

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96/24 on DACmagic
« on: 9 Jan 2011, 04:34 pm »
Hi folks,
Need some help here:
I am trying Hirez music for the first time. I have the computer hooked up to the CA DACmagic via USB.
Got some sample tracks (96/24) from HD tacks. They play fine through MM/Foobar/VLC. Except DACmagic doesnt detect them as 96.
Only 44.1? Any thoughts, what could be happening?

Thanks!
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HAL

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Re: 96/24 on DACmagic
« Reply #1 on: 9 Jan 2011, 04:45 pm »
The USB port on the DACMagic is limited to 16bit/44.1KHz or 48KHz resolution input. It has to be downsampled by the software in the PC from 24/96 to one of those rates.
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nocrapman

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Re: 96/24 on DACmagic
« Reply #2 on: 9 Jan 2011, 05:02 pm »
Quote from: HAL on  9 Jan 2011, 04:45 pm
The USB port on the DACMagic is limited to 16bit/44.1KHz or 48KHz resolution input. It has to be downsampled by the software in the PC from 24/96 to one of those rates.

Does it support 24/96 via optical? I have that hooked up to the computer as well.

i am not certain though if the onboard realtek chip supports 24/96?
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HAL

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Re: 96/24 on DACmagic
« Reply #3 on: 9 Jan 2011, 05:48 pm »
Here is the spec page with the info:

http://www.cambridgeaudio.com/specifications.php?PID=320&Title=Specifications

Not really stated that the optical input will do 24/96, but the coaxial will.  Might do it if it has the correct Toslink interface device is used.
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srb

Re: 96/24 on DACmagic
« Reply #4 on: 9 Jan 2011, 06:18 pm »
The onboard Realtek sound chip should support at least 24/96 unless it is really ancient.  If you go into Control Panel > Sound and check Properties on the Realtek Digital Output device, the Supported Formats tab will listed the sample rates that the device can output.
 
To my knowledge, using the Test button on each sample rate will bypass the internal Windows mixer.  However, unless you are using a Windows Mixer-bypassing driver such as WASAPI (Windows Vista and 7) or ASIO and a player that supports it, all sample rates will be downsampled to either 44.1KHz or 48KHz when playing music.
 
WASAPI is the only driver that I am absolutely convinced completely bypasses the Windows Mixer, as evidenced by the attempt to play higher bit depths or sample rates than the DAC can support returning a hardware unsupported format error.
 
I have also never seen a 24/96 or 24/192 DAC that couldn't output 24/96 through the S/PDIF optical output.
 
Steve
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