whitefoxdennet
asked on
VB.NET beep from sound card, not PC speaker
I am trying to create a beep sound (for use in morse code generation) from a VB.NET windows application, and I need the sound to come out the sound card not the PC speaker. I need to be able to adjust the tone and duration of the beep.
I've tried using the Windows kernel beep function:
Private Declare Function Beep Lib "kernel32" Alias "Beep" (ByVal dwFreq As Integer, ByVal dwDuration As Integer) As Long
But this always causes the sound to come out of the sound card. I need it to come out the sound card speaker output so I can link it to a radio transmitter.
I've tried using the Windows kernel beep function:
Private Declare Function Beep Lib "kernel32" Alias "Beep" (ByVal dwFreq As Integer, ByVal dwDuration As Integer) As Long
But this always causes the sound to come out of the sound card. I need it to come out the sound card speaker output so I can link it to a radio transmitter.
MerijnB
You'll have to do this yourself by generating a sine into a wave and playing that.
ASKER
A code example of exactly how to do that in VB.NET would be nice.
Also a correction to the original description, it should read:
But this always causes the sound to come out of the PC speaker. I need it to come out the sound card speaker output so I can link it to a radio transmitter.
Also a correction to the original description, it should read:
But this always causes the sound to come out of the PC speaker. I need it to come out the sound card speaker output so I can link it to a radio transmitter.
ASKER CERTIFIED SOLUTION
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ASKER
The class that is created as part of that project has a method that does exactly what I needed. Just added a reference to the dll and was able to do exactly what I needed.