[wdmaudiodev] Re: USB Audio :: Support for bmaControls[1] and bmaControls[2] :: Independent channel volume control (recording)?
- From: -t <tge96@xxxxxxxxx>
- To: "wdmaudiodev@xxxxxxxxxxxxx" <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Wed, 5 Jun 2013 16:29:17 -0700 (PDT)
Hi Matthew,
That's great news!!! It made me Google "microphone properties" and scan
through the resultant images. In some of them I do find the "Balance" button
that you're referring to, but like many others - my system does not show that
balance button.
Any ideas why that balance button is missing from my system - USB Audio device
is confirmed to support stereo, and is working on MAC OS - as previously
mentioned?
Many thanks in advance,
Troy Gentry
>________________________________
> From: Matthew van Eerde <Matthew.van.Eerde@xxxxxxxxxxxxx>
>To: "wdmaudiodev@xxxxxxxxxxxxx" <wdmaudiodev@xxxxxxxxxxxxx>
>Sent: Wednesday, June 5, 2013 3:12 PM
>Subject: [wdmaudiodev] Re: USB Audio :: Support for bmaControls[1] and
>bmaControls[2] :: Independent channel volume control (recording)?
>
>
>
>
>Yes, Windows supports per-channel device volume. Sound Control Panel |
>Recording devices | double-click relevant device | Levels tab
>
>Look for a “Balance” button next to the main volume slider.
>
>This is also exposed to apps via IAudioEndpointVolume and other APIs.
>
>From:wdmaudiodev-bounce@xxxxxxxxxxxxx
>[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of -t
>Sent: Wednesday, June 5, 2013 2:36 PM
>To: wdmaudiodev@xxxxxxxxxxxxx
>Subject: [wdmaudiodev] USB Audio :: Support for bmaControls[1] and
>bmaControls[2] :: Independent channel volume control (recording)?
>
>Hi,
>
>I've added independent channel volume control support to my USB Audio 1.0
>recording device.
>
>Under MAC OS, Audio MIDI Setup (AMS) directly supports this independent
>channel volume control of USB Audio 1.0 recording devices. All is as expected
>on Mac OS.
>
>However, I've been unsuccessful getting this to work under Windows 7. Windows
>appears to send the exact same control messages with the exact same data (in
>rapid session) to master (0), left (1), and right (2) - when the master volume
>control (record) is manipulated. Even so, if I try Audacity and split the
>stereo streams, I don't see any control messages sent as these channel volume
>controls are manipulated?
>
>Does anyone know if Windows supports independent channel volume control (USB
>Audio 1.0 recording device)?
>
>This page is a little thin on supported capabilities ->
>http://msdn.microsoft.com/en-us/library/windows/hardware/ff537039(v=vs.85).aspx
>
>Also, does anyone have another favorite page to reference when questions about
>usbaudio.sys capabilities come up?
>
>
>Many thanks in advance,
>Troy Gentry
>
>
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