Windows 10: Windows 11 will not divide UCA 222 audio device stereo input into two mono inputs

The Behringer UCA 222 is a handy little audio interface that allows you to input audio into your computer and also provides output. The Focusrite 2i2 does a similar job.The UCA 222 installs nicely and works pretty well, but I have not been able to utilize the stereo input as a dual mono input. This seriously limits the utility of this device. The Focusrite 2i2 has a selector switch on the device that allows you to do this. I was able to do this briefly with the UCA 222, but for seem reason, it quit working. It is set for dual channels, something I had to do to get it going the first time. For

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Mono audio (ease of access) plus Listen to Microphone (audio control)

I just tested as you suggested:

1. Pre-start state is MONO is ON
2. Start computer to Windows 10 20H2
3. Audio flow is in stereo mode (left and right channels separated from input to speaker)
4. Access ease of use > sound
5. Switch MONO to OFF
6. Audio flow is in stereo mode (left and right channels separated from input to speaker)
7. Switch MONO to ON
8. Audio flow is in mono mode (left and right channels combined from input to speaker)

This tells me that there is an inbuilt windows software process responsible for copying input to output, which is failing to check the MONO flag when it starts at start-up time.

 

Mono audio (ease of access) plus Listen to Microphone (audio control)

I wish to have my Windows 10 (20H2) machine listen to microphone (relay audio from sound input device to sound output device) and be in Mono audio mode (combine left and right input sound streams and send the combined result to both left and right output sound stream) at start-up.

The "Turn on Mono" setting does not appear to take effect until after an (any?) application using windows sound is started. The "listen to microphone" setting IS in effect at start-up (however, the audio flow is still stereo, which is not intended.)

Here is the step-by-step:

1. Start Windows 10, no audio-based application running
2. Ease of Access > Audio > Turn on Mono
3. Sound Control Panel > Recording > (double click on) Microphone > Listen > [x] Listen to this Device

4. Reboot.

5. At this point, the "Turn on Mono" setting does not appear to be in effect (left and right audio channels are still distinct)

6. Start (any) windows sound application

7. At this point, the "Turn on Mono" setting DOES appear to be in effect (left and right channels are merged at input, and the merged audio is presented to both left and right audio outputs)

8. Stop the windows sound application

9. At this point, the "Turn on Mono" setting DOES appear to be in effect (left and right channels are merged at input, and the merged audio is presented to both left and right audio outputs)

Repeatable beginning at step 4.

I imagine this is not intended behavior, and I'm wondering if it's an oversight in Windows 10?

Thanks for any advice or attempts to duplicate this sequence.

Dave

 

Use 4 pole combo jack as mono/stereo input

I have a HP laptop (recent 15" Pavilion) with a "combo" headset jack, that serves as a stereo headphones output and a mono microphone input. My question is, without any external adapters, would it be possible to get Windows to recognise a connected mono (TS) or stereo (TRS) cable as an audio input? Or is it impossible due to the design of the jack and the ADC/DACs? I'm open to solutions using any kind of Windows software (I'm running Windows 10).