This study investigated the effects of monaural versus binaural amplification upon the speech recognition scores (SRSs) of children with bilateral moderate sensorineural hearing loss after more than 4 years of hearing aid use. There was a significant decrease in SRSs for the unaided ears of the monaural hearing aid users, but there were no significant differences between initial and retest SRSs...

24 A method (called binaural enhancement) for enhancing interaural level differences at 25 low frequencies, based on estimates of interaural time differences, was developed and 26 evaluated. Five conditions were compared, all using simulated hearing-aid processing: (1) 27 Linear amplification with frequency-response shaping (LIN); (2) Binaural enhancement 28 combined with linear amplification a...

The head-related transfer function (HRTF) describes the individual perception of sound for different angles of incidence of a sound wave. The directional cues contained in the HRTF are introduced by reflection and diffraction of the sound wave at head and torso and are highly individual [1]. When hearing a binaural signal synthesized via a generic HRTF – deviating from the listener’s HRTF – loc...

More than 100 years ago Lord Rayleigh postulated the Duplex Theory of auditory localisation. Low frequency and wide-band sounds are localised based on interaural time differences (ITDs), while high frequency sounds are localised by interaural level differences (ILDs) [1, 2]. In natural situations, the relationship of those binaural cues is provided in the head-related transfer function (HRTF). ...

The ability to use binaural cues when stimulation was by bilaterally applied bone conduction (BC) transducers was investigated in 20 normal hearing participants. The results with BC stimulation were compared with normal air conduction (AC) stimulation through earphones. The binaural hearing ability was tested by spatial release from masking, binaural intelligibility level difference (BILD), bin...

Bilateral cochlear implantation is becoming a standard of care in many clinics. While much benefit has been shown through bilateral implantation, patients who have bilateral cochlear implants (CIs) still do not perform as well as normal hearing listeners in sound localization and understanding speech in noisy environments. This difference in performance can arise from a number of different fact...

Four patients who preferred monaural as compared with binaural amplification were evaluated. For these patients, audiometric data, recognition performance on a dichotic digit task, and monaural and binaural hearing aid performance using four amplification strategies (National Acoustic Laboratories-Revised, a speech in noise algorithm, multiple-microphone arrays, and frequency modulated [FM]) ar...

OBJECTIVES To evaluate methods for measuring long-term benefits of cochlear implantation in a patient with single-sided deafness (SSD) with respect to spatial hearing and to document improved quality of life because of reduced tinnitus. PATIENT A single adult male with profound right-sided sensorineural hearing loss and normal hearing in the left ear who underwent right-sided cochlear implant...