| A | B |
|---|
| interaural attenuation | loss of dB from crossover |
| crossover | reduction of energy between ears |
| critical band | components of noise that have a masking effect |
| broadband noise | energy present at all frequencies at equal levels per cycle |
| narrow band noise | restricted band of frequencies with center frequency |
| white noise | another term for broadband noise |
| pink noise | speech shaped noise with equal levels per octave |
| overmasking | crossover from non test ear that masks the test ear |
| undermasking | insufficient masking in non-test ear |
| masking | interference of primary acoustic signal by secondary source |
| plateau method | threshold shift procedure using masking |
| minimal masking level | least noise required to just mask the crossover signal in nontest ear |
| central masking | threshold shift mediated by CNS when masking |
| masking dilemma | overmasking occurring at initial masking levels |
| air-bone gap | difference in air and bone conduction thresholds |
| SAL | technique for determining the amount of conductive hearing loss |
| maximum masking level | greatest intensity for masking without overmasking |
| initial masking level | air conduction threshold of the nontest ear |
| effective masking | the dB HL to which the threshold is shifted by a given noise level |
| occlusion effect | decreased low-frequency interaual attenuation in occluded condition |
| shadow curve | unmasked threshold crossover response of nontest ear |
