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USB Soundcard Device Class Specification document


USB Soundcard Device Class Specification document

By : user2949085
Date : November 16 2020, 06:23 AM
should help you out You want the "Universal Serial Bus Device Class Definition for Audio Devices" which is, ironically, the document you linked to, not the specification for basic devices.
code :


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Get Vendor ID and Device ID of soundcard using Inno Setup

Get Vendor ID and Device ID of soundcard using Inno Setup


By : Ashok Yadav
Date : March 29 2020, 07:55 AM
This might help you Even though I wouldn't consider this as a reliable way for recognizing whether certain audio devices are present in the system, here is a possible implementation of the Win32_SoundDevice WMI class which you've mentioned. Query used in the following example filters audio devices by the given manufacturer and then iterates the returned recordset and checks if the just iterated device matches one of the given product names:
code :
[Setup]
AppName=My Program
AppVersion=1.5
DefaultDirName={pf}\My Program

[Code]
function IsSupportedSoundDeviceAvailable(const Vendor: string;
  Models: TStrings): Boolean;
var
  I: Integer;
  WQLQuery: string;
  WbemLocator: Variant;
  WbemServices: Variant;
  WbemObjectSet: Variant;
begin
  Result := False;

  WbemLocator := CreateOleObject('WbemScripting.SWbemLocator');
  WbemServices := WbemLocator.ConnectServer('localhost', 'root\CIMV2');

  WQLQuery := Format('SELECT ProductName FROM Win32_SoundDevice ' +
    'WHERE Manufacturer = "%s"', [Vendor]);

  WbemObjectSet := WbemServices.ExecQuery(WQLQuery);
  // if the query returns at least one record, then...
  if not VarIsNull(WbemObjectSet) and (WbemObjectSet.Count > 0) then
  begin
    // iterate each record in the recordset and if its ProductName exactly
    // matches an item in the passed Models collection, then return True
    for I := 0 to WbemObjectSet.Count - 1 do
      if Models.IndexOf(WbemObjectSet.ItemIndex(I).ProductName) <> -1 then
      begin
        Result := True;
        Exit;
      end;
  end;
end;

procedure InitializeWizard;
var
  Models: TStrings;
begin
  Models := TStringList.Create;
  try
    // fill the exact product model names into the collection
    Models.Add('Creative AudioPCI (ES1371,ES1373) (WDM)');
    // call this function to determine, whether there's at least one device
    // that matches the product name of the vendor given in the first param
    if IsSupportedSoundDeviceAvailable('Creative Technology Ltd.', Models) then
      MsgBox('Sound device is available.', mbInformation, MB_OK);
  finally
    Models.Free;
  end;
end;
Could not satisfy explicit device specification '/device:GPU:0' because no devices matching

Could not satisfy explicit device specification '/device:GPU:0' because no devices matching


By : user7061571
Date : March 29 2020, 07:55 AM
hope this fix your issue Try using sess = tf.Session(config=tf.ConfigProto(allow_soft_placement=True, log_device_placement=True)). This will resolve the problem if it couldn't place an operation on the GPU. Since some operations have only CPU implementation.
Using allow_soft_placement=True will allow TensorFlow to fall back to CPU when no GPU implementation is available.
Tensorflow Object Detection API, runs only on CPU with error Ignoring device specification /device:GPU:0 for node 'prefe

Tensorflow Object Detection API, runs only on CPU with error Ignoring device specification /device:GPU:0 for node 'prefe


By : MonoColorado
Date : March 29 2020, 07:55 AM
Does that help OK, I ran some tests on Ubuntu as well and here is what I found:
The computation runs on GPU on Ubuntu and compared to Windows (Tensorflow 1.3 installed using pip), it's 4 to 6 times faster.
C# NAudio How to force/hardcode audio device (soundcard)?

C# NAudio How to force/hardcode audio device (soundcard)?


By : user3440069
Date : March 29 2020, 07:55 AM
it helps some times I am trying to force an audio device into an NAudio player but I've been unable to work it out. At the moment, the code I have inherited uses a comboBox to select the device and use it, but I want to hard code it in. , Turns out I can just do this:
code :
comboBox1.Text = "Speakers (High Definition Audio Device)";
Playing soundcard input to soundcard output in Python

Playing soundcard input to soundcard output in Python


By : Dat Nguyen
Date : March 29 2020, 07:55 AM
like below fixes the issue pyaudio has a method called non-blocking callback in which input (such as microphone) is directly routed to output (speakers / headphones) as is , meaning with no manipulation can be done over incoming stream.
Not sure if thats what you are looking for.
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