how to control enable audio enhancements with code

哲敏 陈 86 Reputation points
2021-12-20T09:23:01.86+00:00

Hi all,
is there a way to disable the microphone audio enhancements from C++ code?
When the audio enhancement function is enabled, the microphone data collected by our software will be affected, resulting in problems such as echo can not be eliminated。
So I want to know if I can get and set the status of audio enhancement from C + + code。
Here is a picture showing the position of the switch
158972-1.png

Windows API - Win32
Windows API - Win32
A core set of Windows application programming interfaces (APIs) for desktop and server applications. Previously known as Win32 API.
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C++
C++
A high-level, general-purpose programming language, created as an extension of the C programming language, that has object-oriented, generic, and functional features in addition to facilities for low-level memory manipulation.
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Windows Hardware Performance
Windows Hardware Performance
Windows: A family of Microsoft operating systems that run across personal computers, tablets, laptops, phones, internet of things devices, self-contained mixed reality headsets, large collaboration screens, and other devices.Hardware Performance: Delivering / providing hardware or hardware systems or adjusting / adapting hardware or hardware systems.
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Accepted answer
  1. Castorix31 86,061 Reputation points
    2021-12-21T08:36:47.797+00:00

    This simplified test with IPolicyConfig to update the Store works for me (Windows 10 21H1) =>
    (I get 0, then I set to 1 and enhancements become disabled)

    IMMDeviceEnumerator* pDeviceEnumerator;
    HRESULT hr = CoCreateInstance(__uuidof(MMDeviceEnumerator), NULL, CLSCTX_ALL, __uuidof(IMMDeviceEnumerator), (LPVOID*)&pDeviceEnumerator);
    if (SUCCEEDED(hr))
    {
     IMMDevice* pDefault;
     hr = pDeviceEnumerator->GetDefaultAudioEndpoint(eRender, eMultimedia, &pDefault);
     if (SUCCEEDED(hr))
     {
     LPWSTR pwstrEndpointId = NULL;
     hr = pDefault->GetId(&pwstrEndpointId);
    
     IPolicyConfig* pPolicyConfig;
     hr = CoCreateInstance(CLSID_PolicyConfig, NULL, CLSCTX_INPROC_SERVER, IID_PPV_ARGS(&pPolicyConfig));
     if (SUCCEEDED(hr))
     {
     PROPVARIANT var;
     PropVariantInit(&var);
     hr = pPolicyConfig->GetPropertyValue(pwstrEndpointId, TRUE, PKEY_AudioEndpoint_Disable_SysFx, &var);
     var.uiVal = (USHORT)1;
     hr = pPolicyConfig->SetPropertyValue(pwstrEndpointId, TRUE, PKEY_AudioEndpoint_Disable_SysFx, &var);
     pPolicyConfig->Release();
     }
     }
     pDeviceEnumerator->Release();
    }
    

    At beginning :

    #include <initguid.h>
    #include <Mmdeviceapi.h>
    
    DEFINE_GUID(CLSID_PolicyConfig, 0x870af99c, 0x171d, 0x4f9e, 0xaf, 0x0d, 0xe6, 0x3d, 0xf4, 0x0c, 0x2b, 0xc9);
    MIDL_INTERFACE("f8679f50-850a-41cf-9c72-430f290290c8")
    IPolicyConfig : public IUnknown
    {
    public:
     virtual HRESULT STDMETHODCALLTYPE GetMixFormat(PCWSTR pszDeviceName, WAVEFORMATEX** ppFormat) = 0;
     virtual HRESULT STDMETHODCALLTYPE GetDeviceFormat(PCWSTR pszDeviceName, bool bDefault, WAVEFORMATEX** ppFormat) = 0;
     virtual HRESULT STDMETHODCALLTYPE ResetDeviceFormat(PCWSTR pszDeviceName) = 0;
     virtual HRESULT STDMETHODCALLTYPE SetDeviceFormat(PCWSTR pszDeviceName, WAVEFORMATEX* ppEndpointFormatFormat, WAVEFORMATEX* pMixFormat) = 0;
     virtual HRESULT STDMETHODCALLTYPE GetProcessingPeriod(PCWSTR pszDeviceName, bool bDefault, PINT64 pmftDefaultPeriod, PINT64 pmftMinimumPeriod) = 0;
     virtual HRESULT STDMETHODCALLTYPE SetProcessingPeriod(PCWSTR pszDeviceName, PINT64 pmftPeriod) = 0;
     virtual HRESULT STDMETHODCALLTYPE GetShareMode(PCWSTR pszDeviceName, struct DeviceShareMode* pMode) = 0;
     virtual HRESULT STDMETHODCALLTYPE SetShareMode(PCWSTR pszDeviceName, struct DeviceShareMode* pMode) = 0;
     virtual HRESULT STDMETHODCALLTYPE GetPropertyValue(PCWSTR pszDeviceName, BOOL bFxStore, const PROPERTYKEY& pKey, PROPVARIANT* pv) = 0;
     virtual HRESULT STDMETHODCALLTYPE SetPropertyValue(PCWSTR pszDeviceName, BOOL bFxStore, const PROPERTYKEY& pKey, PROPVARIANT* pv) = 0;
     virtual HRESULT STDMETHODCALLTYPE SetDefaultEndpoint(PCWSTR pszDeviceName, ERole eRole) = 0;
     virtual HRESULT STDMETHODCALLTYPE SetEndpointVisibility(PCWSTR pszDeviceName, bool bVisible) = 0;
    };
    

3 additional answers

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  1. Castorix31 86,061 Reputation points
    2021-12-20T09:45:10.527+00:00

    It is done with IPropertyStore and PKEY_AudioEndpoint_Disable_SysFx


  2. Jeanine Zhang-MSFT 9,946 Reputation points Microsoft Vendor
    2021-12-21T05:28:46.44+00:00

    Hi,

    Welcome to Microsoft Q&A!

    According to your description, whether you want to set this?

    159178-image.png

    If so, I am afraid of that this is impossible.

    Each endpoint has two property stores; the "endpoint property store" displayed above, and the "effects property store." The endpoint property store is exposed to applications, but the effects property store is limited to:

    1) the audio driver

    2) the audio engine

    3) the Sound control panel.

    So only the user can view / change settings in the effects property store, and that only through the Sound control panel.

    And I suggest you could refer to the threads: https://social.msdn.microsoft.com/Forums/windowsdesktop/en-US/b028b430-48c5-434b-a644-da192fbf20a5/how-can-we-control-the-quotenhancementsquot-page-under-device-properties-page?forum=windowspro-audiodevelopment

    https://social.msdn.microsoft.com/Forums/windowsdesktop/en-US/5830c1de-fc50-468b-9017-6a88b774a861/how-can-i-disable-microphone-enhancements-from-code?forum=windowspro-audiodevelopment

    Best Regards,

    Jeanine


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  3. Jens-Peter Vraa Jensen 1 Reputation point
    2022-05-20T12:08:08.61+00:00

    Hi,

    Did anyone find a solution to this?

    We are facing audio recording issues when the "Enabled audio enhanchments" is checked. The issue is quite serious as there are several seconds of empty recordings in-between. It only happens using Philips and Olympus dictaphones, but not when using a Jabra Evolve 40 UC headset.

    Since our users are switching workplace computers all the time, we can simply not ask them to check/untick a box before starting their work, so I was hoping we could fix this in code somehow.

    Looking forward to any replies!

    Best regards,

    Jens-Peter


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