Call her/him with a high pitch voice? or do you Call her/him with your normal pitch voice? I use my highpitch voice because it seems to travel farther. I am a man, yes, but I am capable of screaming like a girl. When I was in 6th grade, one kid got out of the GOOD seat in the computer lab. So, I took it. They came back. "HEY! Get outta there!" I wouldn't move. So, he and his friend tried to force me outta that chair. I let out an EAR-Drum Piercing SCREAM. And they backed off and covered their ears immediatly. They were jerks anyway. Also, during my Freshman or Sophomore year when I was taking my PE class, which I hated, we were playing a game of soccor, which I also hate because it's the sport where most of the fights break out for some stupid reason. Anyway, I had the ball, and ONE of the girls came running towards me letting out a loud scream, and you know what? I screamed BACK AT HER! She and I fell to floor laughing our asses off. It was so funny. She still couldn't get over it the whole time I was in High School. Anyway, I use the high pitch voice when calling my cat because it travels farther. OH, and a duck's quack DOES reverberate and echo. I dunno WHO brought that up. I heard a duck quacking last night when I was calling my cat. YES, it did reverberate and echo. So, YES, a ducks' QUACK DOES echo.