Windows 8 and 8.1 Forums


Sound latency in live monitoring (with video)

  1. #11


    Posts : 18
    Windows 7 Ultimate x64


    Quote Originally Posted by MillKa View Post
    - even if the hardware supports direct monitoring, it might be hard to find it,
    not at all hard to find the i/p sliders on a board with Realtek

    Click image for larger version

    Click image for larger version

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  2. #12


    Posts : 10
    W7 Ultimate SP1 x64 + W8.1 Enterprise x64


    Quote Originally Posted by mancman View Post
    .. not at all hard to find the i/p sliders on a board with Realtek ..
    Those inputs sliders are only visible on the Property page of the rear panel green connector (Speaker / Headphone).

    They are not visible on the 2nd analog output (front panel green connector).
    They are not visible on any of the digital outputs (HDMI, DVI, TOSLINK, COAX).

    If the 2nd analog output is not used, the front panel green connector should show them to, cause front and rear green are the same in that configuration.

    Since Art is using slightly better equipment than the average gamer or DVD playing user, he might have used one of the better quality digital outputs, and so he wont be able to find these sliders.
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  3. #13


    Posts : 10
    Windows 8.1


    It seems like the Dell computers are coming with the Realtek chips, while the Hewlett-Packards (like I have) come with something called IDT (formerly Sigma Tel) High Definition Audio CODEC, which doesn't feature nearly as many sliders. However I added a Creative Sound Blaster Audigy FX PCI-e card and get the same results as with the IDT -- only one or two sliders and no audio unless I click "listen to this device."

    But now, onto a video of the Power Mixer!

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  4. #14


    Posts : 10
    W7 Ultimate SP1 x64 + W8.1 Enterprise x64


    Quote Originally Posted by Art Howard View Post
    .. But now, onto a video of the Power Mixer ..
    .. scratching head ..

    1)
    In PowerMixer, below the Tree Control is a tiny darker grey line with a white triangle pointing upwards.
    Click the triangle. Now the triangle should point downwards and you should see an Options button.
    Click the Options button.
    Select the Control page.
    Now you should see all the nodes you already see in the main window of PowerMixer with a check mark - plus maybe some more without a checkmark - or not.
    If you see more nodes/devices than in the main window, set the check mark to for all unchecked nodes.
    That makes the visible in the main window too.

    Do you see more nodes now or not ? If yes, please post a screenshot.

    2)
    Have you unhidden all hidden input / recording devices in the Windows Sound Control Panel ? (see my first post above)

    3)
    You got the FocusRite Scarlett 2i2 ?
    Is the Direct Monitor switch on its front panel on ?
    If yes, you should be able to hear yourself through the Scarletts headphone output without delay.
    Does that work ?

    4)
    The delay is no problem when streaming over the net (e.g. in chat apps like Skype), cause sending the bits around the globe will delay them anyway.

    5)
    While doing your tests,
    - Try to run some application that is capable of recording audio, e.g. Audacity ?
    - Or some application that is capable of streaming audio over the net, e.g. Skype ?
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  5. #15


    Posts : 10
    Windows 8.1


    Options showed the same things that the main tree showed.

    I've tried Audacity and Skype with the line input, also. Things record in Audacity (and Cakewalk Home Studio) just fine, but I need to hear the raw input audio. When I'm podcasting I'm playing sound effects and clips in real time with an interview (over Skype), and when I'm playing guitar I have to hear what I'm playing over.

    Skype doesn't pick up the microphone/line in audio at all.

    When I use the Focusrite 2i2 with the Direct Monitor switch on, I can hear myself in headphones plugged into the Focusrite just fine. My issue there is why I had to buy a $150 extra piece of gear to do what my brand-new $530 computer should've been able to do out of the box?! And also, the Focusrite only works with Cakewalk in ASIO mode. When I want to create something in MIDI using WDM or MME, I have to change the mode, speaker outputs, etc. (But this is getting off track.)

    Click image for larger version

    Another question is why is it Joe Blows like us are having to dedicate time to figure this out, when HP, Sigma Tel/IDT and Microsoft have research labs that should have/should be sorting this stuff out?
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  6. #16


    Posts : 10
    W7 Ultimate SP1 x64 + W8.1 Enterprise x64


    If your PC is a HP Pavillion Desktop 500-214 (HP Pavilion 500-214 Desktop PC Product Specifications HP Pavilion 500-214 Desktop PC | HP® Support), its audio chip is a IDT 92HD73E (92HD73E « Tempo Semiconductor).

    I will check the docs and get back later ..
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  7. #17


    Posts : 18
    Windows 7 Ultimate x64


    Quote Originally Posted by MillKa View Post
    4)
    The delay is no problem when streaming over the net (e.g. in chat apps like Skype), cause sending the bits around the globe will delay them anyway.
    @ Art
    I don't think this dude knows jack about computers
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  8. #18


    Posts : 10
    W7 Ultimate SP1 x64 + W8.1 Enterprise x64


    Weird - there are lots of nodes missing.
    The IDT device is not listed at all.
    I am pretty sure, that the Audigy has more than just one Speaker/Headphone out.

    In PowerMixer, open the Options and go to the System page.
    Check/turn on these options:
    - Show disabled devices
    - Show disconnected devices

    Then go back to the Option/Controls page.
    Are there more nodes now ? If yes, post some screenshots.

    At least the IDT device (and hopefully some sub-devices) should be visible now.

    I checked the Data Sheet of the IDT 92HD73E chip. It seems to have similar capabilities as the Realtek chips, but they don't mention direct monitoring.

    An older TSI/IDT chip (STAC9200) for XP implements direct monitoring by an hardware path bypassing the A/D and D/A converters.
    Doesn't help you much .. but maybe they have cut that feature in their newer chips.
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  9. #19


    Posts : 10
    W7 Ultimate SP1 x64 + W8.1 Enterprise x64


    Quote Originally Posted by mancman View Post
    Quote Originally Posted by MillKa View Post
    4)
    The delay is no problem when streaming over the net (e.g. in chat apps like Skype), cause sending the bits around the globe will delay them anyway.
    @ Art
    I don't think this dude knows jack about computers
    Dear mancman,

    congratulations for solving the problem of communication delays resulting from the speed of light limit.
    I suggest you file a patent immediately and get filthy rich.
    NASA will be extremely happy to get rid of the 20 minute delay when they remote control their stuff on Mars.
    Someone in a certain building with five corners might be interested, too.




    .. just kidding ..
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  10. #20


    Posts : 10
    Windows 8.1


    Quote Originally Posted by MillKa View Post
    Weird - there are lots of nodes missing.
    The IDT device is not listed at all.
    I think that's because I've got the Sound Blaster PCI-e card in, which automatically overrides/disables the IDT CODEC. I should probably remove the Sound Blaster to get accurate results for the IDT, but I had the same issue with either one.

    Another thing I noticed was ASIO4ALL attaches itself to the Sound Blaster card, but wouldn't "see" the IDT High Def CODEC. That's another reason I'm keeping the Sound Blaster in.

    Quote Originally Posted by MillKa View Post
    I am pretty sure, that the Audigy has more than just one Speaker/Headphone out.
    I got the second-cheapest one with basic inputs/outputs. I figure the plain Realtek card in my XP computer got the job done, so the $40 Sound Blaster should, too, no need to get the $80 or $120 model.

    Quote Originally Posted by MillKa View Post
    I checked the Data Sheet of the IDT 92HD73E chip. It seems to have similar capabilities as the Realtek chips, but they don't mention direct monitoring.

    An older TSI/IDT chip (STAC9200) for XP implements direct monitoring by an hardware path bypassing the A/D and D/A converters. Doesn't help you much .. but maybe they have cut that feature in their newer chips.
    I suspect IDT and maybe Sound Blaster, too, have removed that feature from their chips. Why I don't know. I wonder if it's got something to do with pirating?
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Sound latency in live monitoring (with video)
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