Related Experiment Video
Updated: Jun 10, 2025

A Protocol for Comprehensive Assessment of Bulbar Dysfunction in Amyotrophic Lateral Sclerosis ALS
Published on: February 21, 2011
[Disproportionately high loss in speech intelligibility]
Ulrich Hoppe1, Anne Hast2, Thomas Hocke3
1Audiologische Abteilung, Hals-Nasen-Ohren-Klinik, Kopf- und Halschirurgie, Universitätsklinikum Erlangen, Waldstr. 1, 91054, Erlangen, Deutschland. ulrich.hoppe@uk-erlangen.de.
Background:
The influence of hearing impairment on everyday hearing can be estimated by speech audiometry. There is a great deal of variability in the dependence of word recognition scores on pure-tone hearing loss.
Materials And Methods:
A large clinical database of 28,261 records with complete tone and speech audiometry data was analyzed. The maximum monosyllabic word recognition score was evaluated as a function of hearing loss. Its distribution was analyzed in detail.
Results:
In a rank analysis, the distribution of percentiles was determined as a function of pure-tone hearing loss up to 80 dBHL.
Conclusion:
The percentiles of the distribution of maximum word recognition scores for a given pure-tone hearing loss derived here can be used as reference values for a disproportionately high loss of speech recognition.
More Related Videos
06:04Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages
Published on: March 24, 2023
09:09Foreign Accent and Forensic Speaker Identification in Voice Lineups: The Influence of Acoustic Features Based on Prosody
Published on: September 27, 2024
Related Concept Videos
Sound Intensity Level
The human ear can perceive an extensive range of sound intensity, necessitating the use of the logarithmic scale to define a physical quantity—the intensity level. It is a ratio of two intensities and...
Lossless Lines
Interference: Path Lengths
Two special sources may be considered when they are in phase. This can be easily achieved by feeding the two sources from the same source. An example would be synchronizing the two speakers by feeding them with the same source, such as the sound waves produced by a tuning fork. This setup ensures that the two sources have the same frequency and are...
Lossy Lines and Overvoltages
Attenuation
When constant series resistance and shunt conductance are present, voltage and current equations are modified. The propagation constant indicates that voltage and current waves consist of both forward and backward traveling components. These waves attenuate as they propagate, with the attenuation factor related to the resistance and conductance. In a...
Minor Losses in Pipes
Valves play a significant role in generating minor losses by obstructing or redirecting the fluid flow. When a valve is closed or partially closed, it restricts the flow...
Boundary Conditions: Lossless Lines
At the receiving end, the boundary condition states that the voltage equals the product of the receiving-end impedance and current. This relationship is expressed as a function of the incident and...