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Amplifiers and Circuit Algorithms of Contemporary
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2-cc coupler Acoust Soc adjustment amplitude ANSI attenuation Audiol audiologist auditory battery binaural characteristics circuit class A amplifier coherence compression hearing aid compression ratio compression threshold curves dB SPL device dynamic range ear canal ear simulator eardrum earhook earmold effect electroacoustic equivalent input noise feedback filter frequency response function gain control harmonic distortion Hear Instrum hearing aid fitting Hearing Aid Performance hearing-impaired high-frequency higher frequencies impedance increased input level input signal input SPL insertion gain intermodulation distortion KEMAR Killion linear hearing aid listening low frequencies low-frequency Lybarger magnetic measurements microphone middle ear monaural noise input normal output SPL patient peak clipping potentiometer Preves probe quency real ear RECD receiver recognition scores reduced reported resonance REUR S3-48 working group saturation sensorineural hearing loss signal processing sound quality spectrum speech recognition subjects switch telecoil Tibbetts tion transducer typical