Related Experiment Video
Updated: May 24, 2025
10:13
A Lightweight, Headphones-based System for Manipulating Auditory Feedback in Songbirds
Published on: November 26, 2012
14.2K
Variability of Preference-Based Adjustments on Hearing Aid Frequency-Gain Response
Bertan Kursun1, Chemay Shola1, Isabella E Cunio1
1Department of Speech and Hearing Sciences, University of Washington, Seattle.
Summary
Hearing aid users show varied gain adjustments, especially in high frequencies. Repeated adjustments help refine preferences, indicating frequency bands are not equally weighted or independent.
Area of Science:
- Audiology
- Hearing Science
- Human-Computer Interaction
Background:
- Hearing aid users can customize frequency-gain responses.
- Variability in individual hearing aid adjustments is a significant concern for effective amplification.
Purpose of the Study:
- To investigate within-subject variability in hearing aid gain adjustments during a single self-adjustment procedure.
- To analyze how user interface designs impact hearing aid self-adjustment.
Main Methods:
- 20 older adults with mild-to-severe hearing loss participated in two experiments.
- Participants adjusted hearing aid amplification across six frequency bands (0.25-8 kHz) using a touchscreen interface.
- Statistical properties of 30 repeated gain adjustments were analyzed for each participant.
Main Results:
- Gain adjustments showed highest variability in 4- and 8-kHz bands, lowest in 1- and 2-kHz bands.
- Preferred gains were correlated across specific frequency bands (0.25-0.5 kHz, 0.5-1 kHz, 4-8 kHz).
- The standard error of preferred gain decreased with more trials, indicating preference convergence.
Conclusions:
- Hearing aid self-adjustments reveal underlying user preferences.
- Frequency band contributions to preferences are unequal and interdependent.
Related Concept Videos
01:20Frequency Response of Op Amp Circuits
283
Operational amplifiers (op-amp) are used in signal conditioning, filtering, or for performing mathematical operations such as addition, subtraction, integration, and differentiation. The frequency response of an op-amp is an important aspect that describes how the gain of the amplifier varies with frequency.
Frequency Response and Gain:
The gain of the op-amp, A(ω), is not a constant but a function of the input signal frequency. An op-amp can maintain a constant gain at low frequencies,...
Frequency Response and Gain:
The gain of the op-amp, A(ω), is not a constant but a function of the input signal frequency. An op-amp can maintain a constant gain at low frequencies,...
283
01:24Effects of feedback
501
Feedback in control systems plays a critical role in shaping various operational parameters, extending beyond simple error reduction to influence stability, bandwidth, gain, impedance, and sensitivity. Understanding these effects requires examining a basic feedback system characterized by defined input, output, error, and feedback signals.
Feedback significantly modifies the gain of a control system. The gain of a system without feedback is altered by a factor of one plus GH, where G represents...
Feedback significantly modifies the gain of a control system. The gain of a system without feedback is altered by a factor of one plus GH, where G represents...
501
01:15Gain
159
Gain and phase shift are properties of linear circuits that describe the effect a circuit has on a sinusoidal input voltage or current. The circuit's behavior that contains reactive elements will depend on the frequency of the input sinusoid. As a result, it is observed that the gain and phase shift will all be frequency functions.
Gain:
Suppose Vin is the input and Vout is the output signal to a circuit.
Gain:
Suppose Vin is the input and Vout is the output signal to a circuit.
159
01:26Scaling
222
In designing and analyzing filters, resonant circuits, or circuit analysis at large, working with standard element values like 1 ohm, 1 henry, or 1 farad can be convenient before scaling these values to more realistic figures. This approach is widely utilized by not employing realistic element values in numerous examples and problems; it simplifies mastering circuit analysis through convenient component values. The complexity of calculations is thereby reduced, with the understanding that...
222
01:16Characteristics of Practical Op Amps
442
A difference amplifier, a crucial component in numerous electronic devices, ideally amplifies only the difference-mode signal, which is the difference between two input signals. However, in practical circuits, the output voltage depends on both the differential gain and the common-mode gain.
The ratio of differential gain to the common-mode gain is defined as the common-mode rejection ratio (CMRR). This ratio quantifies the ability of operational amplifiers (op-amps) to reject common-mode...
The ratio of differential gain to the common-mode gain is defined as the common-mode rejection ratio (CMRR). This ratio quantifies the ability of operational amplifiers (op-amps) to reject common-mode...
442
01:01Perception of Sound Waves
4.4K
The human ear is not equally sensitive to all frequencies in the audible range. It may perceive sound waves with the same pressure but different frequencies as having different loudness. Moreover, the perception of sound waves depends on the health of an individual's ears, which decays with age. The health of one's ears may also be affected by regular exposure to loud noises.
The pitch of a sound depends on the frequency and the pressure amplitude of the source. Two sounds of the same...
The pitch of a sound depends on the frequency and the pressure amplitude of the source. Two sounds of the same...
4.4K