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Voice API for Windows Operating Systems Library Reference — November 2003 135
adjust speed or volume immediately — dx_adjsv( )
!
!!
! Example
#include <stdio.h>
#include <srllib.h>
#include <dxxxlib.h>
#include <windows.h>
main()
{
int dxxxdev;
/*
* Open the Voice Channel Device and Enable a Handler
*/
if ( ( dxxxdev = dx_open( "dxxxB1C1", 0 ) ) == -1 ) {
perror( "dxxxB1C1" );
exit( 1 );
}
/*
* Modify the Volume of the playback so that it is 4dB
* higher than normal.
*/
if (
dx_adjsv( dxxxdev, SV_VOLUMETBL, SV_ABSPOS, SV_ADD4DB ) ==
-1 ) {
printf( "Unable to Increase Volume by 4dB\n" );
printf( "Lasterror = %d Err Msg = %s\n",
ATDV_LASTERR( dxxxdev ), ATDV_ERRMSGP( dxxxdev ) );
dx_close( dxxxdev );
exit( 1 );
}
/*
* Continue Processing
* .
* .
* .
*/
/*
* Close the opened Voice Channel Device
*/
if ( dx_close( dxxxdev ) != 0 ) {
perror( "close" );
}
/* Terminate the Program */
exit( 0 );
}
!
!!
! See Also
• dx_setsvcond( )
• dx_clrsvcond( )
• dx_getcursv( )
• dx_getsvmt( )
• speed and volume modification tables in the Voice API Programming Guide
• DX_SVMT data structure