Bell Telephone Laboratories, Inc. - The Science of Sound
A1. Bell Telephone Laboratories, Inc. - How We Hear A2. Bell Telephone Laboratories, Inc. - Frequency A3. Bell Telephone Laboratories, Inc. - Pitch A4. Bell Telephone Laboratories, Inc. - Intensity A5. Bell Telephone Laboratories, Inc. - The Doppler Effect B1. Bell Telephone Laboratories, Inc. - Echo and Reverberation B2. Bell Telephone Laboratories, Inc. - Delay Distortion B3. Bell Telephone Laboratories, Inc. - Fundamentals and Overtones B4. Bell Telephone Laboratories, Inc. - Quality B5. Bell Telephone Laboratories, Inc. - Filtered Music and Speech B6. Bell Telephone Laboratories, Inc. - How We Hear