pc speaker sound and chickens...

Code:

/* Emits a 7-Hz tone for 10 seconds.

     True story: 7 Hz is the resonant
     frequency of a chicken's skull cavity.
     This was determined empirically in
     Australia, where a new factory 
     generating 7-Hz tones was located too
     close to a chicken ranch: When the
     factory started up, all the chickens
     died. 

     Your PC may not be able to emit a 7-Hz tone. */

#include <dos.h>

int main(void)
{
   sound(7);
   delay(10000);
   nosound();
   return 0;
}

i got this example from the BC45 help... i've used this before and am familiar with it... however can we adjust the intensity of the signal? thank you...

[i'd thought it'd make a good funny... that, and i don't wanna wake my folks when i'm pulling an all nighter... y'know, 2 AM in tomorrow... ]

7 Hz is below the threshold of human hearing, it is a subsonic frequency. Your parents won't hear it, but put it at enough power through a ss woofer and they will feel it!

yeah i do have a background in the physics of sound so... but the idea was whether or not i could control the amplitude of the signal via a library function, as the range is checked by the sound () function... thanks just the same...