Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
| Name | Class |
|---|---|
| Hoerzentrum Oldenburg | UNKNOWN |
Not provided
Not provided
Not provided
Not provided
In previous studies, Speech Enhancer has been shown to improve Listening Effort using a subjective method. To overcome the weakness of subjective testing, this study uses an objective measurement that has shown convincing results in previous studies addressing Listening Effort.
The Speech Enhancer (SE) provides better speech intelligibility for soft speech while maintaining the same sound quality for loud input level.
Better speech intelligibility may also result in less listening effort in some circumstances. So there was the hope that the SE provides better speech intelligibility and less listening effort for situation with soft speech.
The SE has already been intensely and successfully investigated in early studies.
The cognitive performance on a neurophiosiological level has already been successfully investigated in a previous studies.
Not provided
Not provided
Not provided
Not provided
Not provided
| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Hearing impaired group | Experimental | The hearing impaired group will compare the reference condition (SpeechEnhancer on) with the intervention condition (SpeechEnhancer off). |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Speech Enhancer | Other | Speech Enhancer is an adaptive feature which increases the amplitude of speech signal when speech is detected. Speech Enhancer will be switched on and off for the Intervention |
| Measure | Description | Time Frame |
|---|---|---|
| EEG alpha power measured during Listening Effort Task (LET) | During the LET experiment EEG data will be recorded while participants perform the Adaptive CAtegorical Listening Effort (ACALES). Participants will be equipped with an EEG cap. A continuous EEG will be recorded while participants are performing the LET. Based on the EEG data the alpha power will be analysed offline afterwards. | 10 weeks |
| Measure | Description | Time Frame |
|---|---|---|
| EEG alpha power measured during Listening Span Task (LST) | During the LST experiment EEG data will be recorded while participants perform the Working Memory Test. Participants will be equipped with an EEG cap. A continuous EEG will be recorded while participants are performing the LST. Based on the EEG data the alpha power will be analysed offline afterwards. | 10 weeks |
Not provided
Inclusion Criteria:
Exclusion Criteria:
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
| Name | Affiliation | Role |
|---|---|---|
| Matthias Vormann | Hörzentrum Oldeburg | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Hörzentrum Oldenburg | Oldenburg | Lower Saxony | 26129 | Germany |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| Result | Wagener, K. B. (1999). Development and evaluation of a German sentence test Part II: Optimization of the Oldenburg sentence test. . Zeitschrift Fur Audiologie,, 38, 44-56. | ||
| 28679238 | Result | Krueger M, Schulte M, Brand T, Holube I. Development of an adaptive scaling method for subjective listening effort. J Acoust Soc Am. 2017 Jun;141(6):4680. doi: 10.1121/1.4986938. | |
| Result | Tschopp K, I. L. (1992). Die Entwicklung einer deutschen Version des SPIN-Tests (Speech Perception in Noise). In: B. Kollmeier (Hrsg): Moderne Ver-fahren der Sprachaudiometrie. . Heidelberg, Median-Verlag,, 311-329. |
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
| Type | Date | Date Unknown |
|---|---|---|
| Release | Jul 1, 2024 | |
| Reset | Oct 10, 2024 | |
| Release | Jun 30, 2025 | |
| Reset | Jul 17, 2025 |
Not provided
Not provided
| Release Date | Unrelease Date | Unrelease Date Unknown | Reset Date | MCP Release Number |
|---|---|---|---|---|
| Jul 1, 2024 | Oct 10, 2024 | |||
| Jun 30, 2025 |
Not provided
Not provided
Not provided
Not provided
Not provided
| Listening effort (ACALES) measured during Listening Effort Task (LET) | The speech material of the ACALES is based on the German OLSA sentence matrix test. All sentences are syntactically identical and consist of five word categories (name, verb, number, adjective, and object, e.g., "Peter kauft fünf rote Blumen" [engl. "Peter buys five red flowers"]). Each trial consists of a sequence of three (different) sentences, after which participants are asked to rate their perceived listening effort on a scale via touch screen. The scale ranges from 1 (no effort) to 13 (extreme effort) based on the ACALES. These values (effort scaling units - ESCU) constitute the subjective behavioral data regarding the personal experience of listening effort. The ACALES is part of the LET experiment and is therefore combined with EEG recordings (see outcome 1). | 10 weeks |
| Working memory measured with Listening Span Task (LST) | The material in the LST task is taken from the Basler sentence test. Half of the sentences are high predictable sentences (HP) and the other half were low predictable (LP) sentences. The participants' task is to repeat the sentence they hear and remember the last word of each sentence. After four sentences, the participants is asked to recall the final words of the last four sentences. The experimenter scores the number of correctly repeated final words after each sentence (words recognized) as well as the number of correctly recalled final words (words remembered). Based on this, a relative memory score is calculated. The Working Memory Test is part of the LST and is therefore combined with EEG recordings (see outcome 2). | 10 weeks |
| Jul 17, 2025 |