In any event, a person who has heard the tape said that nothing that either fighter said was audible to the unaided ear.

He was now passing under the very walls of the Tower, and the cries and sounds of fighting could be heard with his unaided ears.

The alcoves had privacy shields, but she doubted they were effective against anything but the unaided ears of those in the next alcove.

Unable to hear through the thick oak paneling with his unaided ear, he now placed the mouth of the glass against the door and pressed his ear deep into the curve of the bottom.

This is not a sound any human being has heard with unaided ear.

At this point-blank range Bradley could just detect, with his unaided ears, a piccololike subharmonic as the robot scanned the obstacle ahead, and tried to identify it.

The call of C. montana sounds like static hiss to the unaided human ear.

All she had picked up on the second floor of the dorm was something she called "room noise," a kind of humming perceived as silence by the unaided ear.