Generate sound

[hansreyz]

Hi all,

is possible to generate sound with concrete frequency like it does in
VB:
beep(frequency, latency)

Thanks!!!

 

[Paul G. Tobey [eMVP]]

This has been asked before in this group There was a post concerning
generating a fixed frequency sound for a short period of time via the
waveform audio driver (MIDI).

Ah, I did save it offline. Here's the text of a message from Rick Winscot:

-----
Paul,



Here is the link on msdn.



http://msdn.microsoft.com/library/d..._ppc/htm/wfmtmidi_waveformat_midi_message.asp



This must be wrapped as an eVC++ 4.0 COM dll or can be included as an IJW in
VS .NET C++ dll - and then included in a project as a base assembly.



This is not a wav - and requires no mixing. as a matter of fact, the device
can continue playing a wav with midi tones playing at the same time. I have
some source if you'd like to take a look at it.



Rick

 

[Sergey Bogdanov]

Well, you can generate "pure tone" into the Wave file and using the
PlaySound P/Invoke just play this file. How it can be done see this:
http://www.sergeybogdanov.com/Samples/WaveGen.zip

Best regards,
Sergey Bogdanov
http://www.sergeybogdanov.com