playing tones thru the speakers

[jono_123]

does anyone know how to sound a tone through the computer speakers of a specific frequency?

[Megatron]

Use the Beep API.

It only works on NT machines though.

[Mad Compie]

If you use VB3 (16-bit), there are API for this. But indeed, not possible in Win9x... unless you use some DLL like vbio or something.

[jono_123]

Originally posted by Mad Compie
If you use VB3 (16-bit), there are API for this. But indeed, not possible in Win9x... unless you use some DLL like vbio or something.

vbio dll?? where can i find that and how do i use it????

[Mad Compie]

You have to use IO in C++ because VB can't do this.

A DLL called "speaker.dll" does the thing:

see http://www.magma.ca/~dross/code.html for a sample VB program and the complete C++ source code!!!

[Keithuk]

Yes, I have an app that plays tones through the PC speaker at various frequencies.

I'll find it out when I get home and post it.

[Keithuk]

The Beep API works on 95/98 as well

I've found that PC Speaker app, have fun.

[dglienna]

this crashed VB when i ran it in the IDE on my laptop using XP

'Privileged Instruction' prolly won't run under XP/2000

unless it needs to be compiled?

[Keithuk]

Sorry David, I didn't know that. I use Win98.

No it won't run on XP, it gets an error that it wants to email to Microsoft.

[ALL]

I asked the same question when i first got onto VBForums.com and here is the link:
http://vbforums.com/showthread.php?s=&threadid=286904

NOTE: the username i used to use is rotcrules