custom.aud[2].audlen = sizeof(sine_data)/2;
custom.aud[2].audper = (unsigned short)period;
custom.aud[2].audvol = 32; /* 50% of maxvol */
custom.aud[2].audlen = sizeof(sine_data)/2;
custom.aud[2].audper = (unsigned short)period;
custom.aud[2].audvol = 32; /* 50% of maxvol */