The Impact of Transducer Selection on the Acceptable Noise Level.

Purpose: The aim of this study was to assess the impact of transducer (loudspeaker, supra-aural headphones, and insert earphones) selection on the acceptable noise level (ANL).

Study Sample: Thirty young adults with normal hearing who reported difficulty with background noise served as participants.

Research Design: A repeated-measures experimental design was employed.

The Effect of Music Genre and Music-Preference Dimension on Acceptable Noise Levels in Listeners with 'Normal' Hearing.

Background: The acceptable noise level (ANL) is the maximum level of background noise that an individual is willing to accept while listening to speech. The type of background noise does not affect ANL results except for music.

Purpose: The purpose of this study was to determine if ANL differed due to music genre or music genre preference.

Frequency Responses of Conventional and Amplified Stethoscopes for Measuring Heart Sounds.

Background: Frequencies of normal and abnormal heart sounds have previously been reported, but the acoustic analyses of the frequency responses of conventional and amplified stethoscopes for different heart sounds have not yet been reported.

Objectives: To compare the acoustic analysis of frequency responses of three stethoscopes (conventional and amplified) for measuring simulated heart sounds.

Materials And Methods: This exploratory study used Starkey SLI-ST3, Cardionics E-Scope II (both electronic) and Littmann Classic S.

Acceptable Noise Level Stability Over a One-Year Period of Time.

Background: The acceptable noise level (ANL) is a measure of willingness to listen to speech in the presence of background noise and is thought to be related to success with amplification. To date, ANLs have only been assessed over short periods of time, including within a session and over a 3-week and 3-month time period. ANL stability over longer periods of time has not been assessed.

Acceptable noise levels in preschool children with normal hearing.

Background: The acceptable noise level (ANL) measure is an indicator of hearing aid use. The majority of research in this area has focused primarily on adults. Research using school-aged listeners, specifically 8 and 12 yr old children, demonstrated that the average ANL values, standard deviations (SDs), and distribution of ANL values for these children were similar to those of adult listeners.

The effects of asymmetric directional microphone fittings on acceptance of background noise.

Objective: The effects of asymmetric directional microphone fittings (i.e., an omnidirectional microphone on one ear and a directional microphone on the other) on speech understanding in noise and acceptance of background noise were investigated in 15 full-time hearing aid users.