void sound7 (unsigned int chan, unsigned int freq, unsigned int vol, unsigned int finc, unsigned int vinc, unsigned int durn, unsigned int mode);

Define a sound transition. The duration is specified in multiples of 16ms, and the frequency and volume increments are applied every 16ms.

chan =Sound channel (0 - 3).
freq =Frequency (0 - 8191).
vol =Volume (0 - 1023).
finc =Frequency increment.
vinc =Volume increment.
durn =Duration of transition.
mode =0 - Continue from previous frequency and volume (ignore new values).
1 - Start at specified new frequency and volume.

Include file: mtxsnd.h