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09-18-2020

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USB c display out audio sample rate

2020-09-18, 15:28 PM

Hello all. I have my Lenovo legion laptop connected to my AVR Via USB C to HDMI and everything is working the video out and audio it’s just that the sample rate is set at 16 bit 48 kHz and it won’t adjust. I tried another cable and another connected the device and it still has the same sample rate. So I just want to confirm that’s the only audio setting I can get out of this usb c port ? Thank you.  

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5 Posts

09-17-2020

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Re:USB c display out audio sample rate

2020-09-18, 15:53 PM

Just speculating, but i dont think this is a matter of USB-C . I think it has to do with the audiodrivers, because i have problems with the 16 bit resolution, too. ( Not using USB-C atm) 

 

 

You can go in my topic and try the same things like i did, maybe it will work better for you. I got to the point of beeing "able" to change the resolution, but to no "satisfying" state.  

 

https://forums.lenovo.com/t5/Gaming-Laptops/Legion-5-15ARH05-Audio-Visual-Keys-Backlight-AC-Wifi-Win-10-Mediatool-Update-or-repair/m-p/5039430

 

 

To be clear, without trying out the things mentioned in my topic i could NOT change the Bit Resolution of the Audio. Anyway, it did not work out. 

 

So i am ( kind of ) confirming that the 16 bit resolution is not changeable. 

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Re:USB c display out audio sample rate

2020-09-18, 17:22 PM

well for my onboard audio realtek i can get upto 24 bit 48khz and for my Nvidia HDMI i can get upto 24 bit 192khz  but the USB C Nvidia will only do  a 16 bit 48khz and this is USB c to HDMI and usb c to displayport. So im starting to think its the USB C output drivers or limitations.  Im not getting any popping issues with mine but i am using a lenovo 15IMH05H.

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09-17-2020

DE

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Re:USB c display out audio sample rate

2020-09-18, 18:09 PM

Ok, so thats a difference for sure. 

 

 

Do you know which Realtek Audiochip is on your Mainboard ?

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Re:USB c display out audio sample rate

2020-09-18, 18:31 PM
Not sure which one it is but its an Intel realtek with a driver date of 5/26/2020
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