commit cce21a4d4fb1285fd07ce47c0cc5a57392e09026
from: Sven M. Hallberg <pesco@khjk.org>
date: Mon Oct 23 15:27:22 2023 UTC

change default shape to sin rise, exp fall

I don't know what I'm doing. Just going by ear and pictures of purportedly
clean waveforms.

commit - bd861c4e7af4398ec6472f4855e87cc01e0aea74
commit + cce21a4d4fb1285fd07ce47c0cc5a57392e09026
blob - b1a1a579da6402e4aa92a262b573481040e38dc1
blob + 95a5cd48cc2122c9370e9087cbe18dda1699009c
--- cw.c
+++ cw.c
@@ -26,8 +26,8 @@ static sample_t *buf;
 /* envelope parameters */
 static int rise = 4;			/* ramp up (attack) time [ms] */
 static int fall = 4;			/* ramp down (decay) time [ms] */
-static rampfun_t *risefun = ramp_lin;	/* shape of attack envelope */
-static rampfun_t *fallfun = ramp_lin;	/* shape of decay envelope */
+static rampfun_t *risefun = ramp_sin;	/* shape of attack envelope */
+static rampfun_t *fallfun = ramp_exp;	/* shape of decay envelope */
 
 static int lowtime, hightime;		/* (in)audible time included in ramps */
 static int inbeep;			/* did we last beep()? */