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Playing 24 bits FLAC, but output format data is still 16 bits
Harukstz
post Feb 28 2013, 14:48
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I'm testing some 24 bits FLAC files in foobar v1.1.18 and it plays fine but in Playback>Output, Output format data is still 16 bit and it can not be changed as it is grayed out. My device is correctly selected AudioBox 22VSL. (file's properties: Bits per sample : 24)

how can I confirm 24 bits is being played and not down sampled 16 bits?

sound card: http://www.presonus.com/products/AudioBox-22VSL
OS: Win 7 SP1

Thanks

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Propheticus
post Mar 21 2013, 18:41
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If you select your soundcard which as you say has ASIO drivers, foobar2000 negotiates with the ASIO drivers and uses the bit-depth they report. Bit depth has to be configured in your ASIO configuration panel.
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XMagnesiumX
post Mar 21 2013, 19:11
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QUOTE (Propheticus @ Mar 21 2013, 18:41) *
If you select your soundcard which as you say has ASIO drivers, foobar2000 negotiates with the ASIO drivers and uses the bit-depth they report. Bit depth has to be configured in your ASIO configuration panel.


Actually if you use the Digital volume control inside Foobar then the ASIO driver gets less then 24Bit.
Also some components may interfere with the Foobar to ASIO bit stream.
What I"m saying that setting 24BIt in the ASIO isn't enough.
You also have to make sure that no components (like a 16bit based equalizer) and no digital volume reduction are used in FOOBAR in order to get the desired 24BIT stream to the DAC.
AND then comes the test that I"ve suggested for checking whether you have a real 24bit output to the DAC (more then 96DB dynamic range from the analog outs).

This post has been edited by XMagnesiumX: Mar 21 2013, 19:14
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db1989
post Mar 21 2013, 20:22
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QUOTE (XMagnesiumX @ Mar 21 2013, 18:11) *
Actually if you use the Digital volume control inside Foobar then the ASIO driver gets less then 24Bit.
No. A volume-reduced signal will have less than the full 24 bits of dynamic range, but the actual signal output to the device will not be lowered from 24 bits if that is what foobar2000 is configured to send.

You seem to be completely confusing 24 bits of dynamic range with 24 bits of signal. It is the latter than the OP is concerned about. The former follows naturally if nothing untoward is done to the signal and is merely an afterthought to the actual subject of this thread.

This post has been edited by db1989: Mar 21 2013, 20:22
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XMagnesiumX
post Mar 21 2013, 20:55
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See Post #12

This post has been edited by XMagnesiumX: Mar 21 2013, 21:47
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db1989
post Mar 21 2013, 21:19
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So you’re admitting that you were wrong in a roundabout way with an unnecessary verbose explanation of something that I already acknowledged, perhaps in an attempt to obscure the former fact. OK.

You’re still quoting yourself saying that “the ASIO Driver gets less than 24 bit”, and that is still wrong. As I already explained, the driver is still piped a 24-bit signal, but assuming a 6 dB attenuation, the most significant bit would consistently be 0. That’s still a 24-bit signal. Whether it has 23 bits of dynamic range or anything else is irrelevant to the hardware and to the format of data that it receives. I already said all this, too.

My point is that, as far as I can understand, this thread is about sending a signal of a specific bandwidth over ASIO – not about the actual contents of said signal. In that context, I think Propheticus may be the winner.

This post has been edited by db1989: Mar 21 2013, 21:22
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Posts in this topic
- Harukstz   Playing 24 bits FLAC, but output format data is still 16 bits   Feb 28 2013, 14:48
- - EpicForever   Bit depth is 32bit - as handled by DirectSound in ...   Feb 28 2013, 15:23
|- - Harukstz   in Output settings there is only Null Output and P...   Mar 11 2013, 18:32
- - Kohlrabi   QUOTE (Harukstz @ Feb 28 2013, 14:48) how...   Feb 28 2013, 17:36
- - Andreasvb   Also, if he could even hear the full range of 24 b...   Feb 28 2013, 18:13
- - db1989   Look, whilst I donít want anyone to claim that 24-...   Feb 28 2013, 19:06
- - Kohlrabi   Since the question was already answered by QUOTE (...   Feb 28 2013, 21:46
- - db1989   Or just use one of the bitstreaming output methods...   Feb 28 2013, 22:51
- - EpicForever   @ Kohlrabi: Not exactly answered. I have checked ...   Feb 28 2013, 23:01
|- - Kohlrabi   QUOTE (EpicForever @ Feb 28 2013, 23:01) ...   Mar 1 2013, 07:50
- - db1989   foobar2000 certainly does support outputting 24 bi...   Mar 11 2013, 18:36
- - XMagnesiumX   QUOTE (Harukstz @ Feb 28 2013, 14:48) how...   Mar 21 2013, 16:09
|- - lvqcl   QUOTE (XMagnesiumX @ Mar 21 2013, 19:09) ...   Mar 21 2013, 16:22
- - Propheticus   If you select your soundcard which as you say has ...   Mar 21 2013, 18:41
|- - XMagnesiumX   QUOTE (Propheticus @ Mar 21 2013, 18:41) ...   Mar 21 2013, 19:11
|- - db1989   QUOTE (XMagnesiumX @ Mar 21 2013, 18:11) ...   Mar 21 2013, 20:22
|- - XMagnesiumX   See Post #12   Mar 21 2013, 20:55
|- - db1989   So you’re admitting that you were wrong in a...   Mar 21 2013, 21:19
- - CaperRocks   I am new Harukstz and was wondering if you got fo...   Jul 5 2013, 22:18


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