1 /* Prototypes */ 2 int generate_cw_sound_fragment(int sndtype,int keystate_prev,int keystate, 3 int samplerate,int nbsamples,int freq,int amplitude, 4 unsigned long long offset_keyup,unsigned long long offset_keydown, 5 double *samplebuf); 6 void generate_qrn_sound_fragment(int samplerate,int nbsamples,int amplitude, 7 double *samplebuf); 8 void squelch(int squelch_level,double *sndbuf,int nbsamples,double ticklen); 9