OS/2, eCS & ArcaOS - Technical > Multimedia

Can aswitch.exe be used for always connected/attached usb speakers?

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Pete:
Hi All

Probably a question for Rick to answer but if anyone else knows...

I have Dell SB521A soundbar - https://www.dell.com/en-uk/shop/dell-slim-soundbar-sb521a/apd/520-aasi/pc-accessories - on order which has a usb power and audio connector, no separate audio lead.

Will aswitch.exe recognise already attached usb speakers at boot and do it's thing to output audio via usb or will I have to faff around unplugging/replugging usb speaker lead to get it to work?


Regards

Pete

Rich Walsh:

--- Quote from: Pete on September 29, 2024, 11:06:56 pm ---Will aswitch.exe recognise already attached usb speakers at boot and do it's thing to output audio via usb
--- End quote ---

It _should_ work as described, but...

If the soundbar is the only speaker you'll ever use, why not open 'Multimedia Setup' to the "USB Adapter Wave" page and make that the default audio device? If this is AOS 5.0.3(?) or later, this will work as expected. On eCS, MCP, etc, the checkbox is broken so 'aswitch.exe' is needed.

Pete:
Hi Rich

Hmmmm.... What "USB Adapter Wave" page? - I suspect that page only appears if a USB Audio Device is installed.


Regards

Pete

Lars:

--- Quote from: Pete on September 30, 2024, 01:32:15 am ---Hi Rich

Hmmmm.... What "USB Adapter Wave" page? - I suspect that page only appears if a USB Audio Device is installed.


Regards

Pete

--- End quote ---

No, it appears if the USB Audio Driver is properly installed (including the necessary updates to MMPM2.INI). The MMOS2 subsystem has no way of knowing if a USB audio device is inserted or not.
But you need to activate a certain sound driver (UNIAUD or USBAUD) in order to support streaming of data to/from the devices that are attached to that driver.

Pete:
Hi Lars

Thanks, that has "muddied the water" very well  :-)

The situation is fairly simple: On an existing working system I am replacing a pair of desktop speakers with a soundbar.

The desktop speakers have a power connector and (standard) stereo mini-jack audio connector.

The soundbar has only 1 usb connector for power and audio.

So, I need a way to route the audio output from existing soundchip (using uniaud) to the usb connected soundbar.

Do I need the USB Audio Driver installed as well?


Regards

Pete

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