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X-ORIGINAL-URL:https://blog.rwth-aachen.de/akustik
X-WR-CALDESC:Veranstaltungen für Akustik-Blog
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DTSTART;TZID=Europe/Berlin:20250404T100000
DTEND;TZID=Europe/Berlin:20250404T110000
DTSTAMP:20260427T065349
CREATED:20250327T091008Z
LAST-MODIFIED:20250327T091008Z
UID:3459-1743760800-1743764400@blog.rwth-aachen.de
SUMMARY:Zhou: Effects of Different Maskers on the Preference of Heat Pump Noise
DESCRIPTION:With the increasing usage of heat pumps in residential areas\, their noise emissions have become a growing concern. One potential solution is masking\, where additional sounds modify the perception of unwanted noise. This study investigated the effects of different types of maskers (pink noise\, high-pass filtered pink noise\, and water sound) and masker locations on the perceived loudness and preference of heat pump noise. A listening experiment was conducted using a 2-alternative forced choice (2-AFC) method with a 1-up-1-down rule to determine points of subjective equality (PSE). Results show that all maskers improved perceived preference\, with water sound being the most effective. These findings provide insights into heat pump noise control strategies. \nMelden Sie sich hier an um Einladungen zu den Kolloquium-Vorträgen per E-Mail zu erhalten.\nRegister here to receive the invitations to colloquium talks via e-mail. \nZoom-Meeting-ID: 954 4073 3814\nPasswort: 450783
URL:https://blog.rwth-aachen.de/akustik/event/zhou-effects-of-different-maskers-on-the-preference-of-heat-pump-noise/
LOCATION:IHTA Seminarraum (60 Persons) and Zoom-Meeting (Hybrid)\, Kopernikusstr. 5\, Aachen\, 52074\, Deutschland
CATEGORIES:Verteidigung Masterarbeit
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DTSTART;TZID=Europe/Berlin:20250404T110000
DTEND;TZID=Europe/Berlin:20250404T120000
DTSTAMP:20260427T065349
CREATED:20250326T133858Z
LAST-MODIFIED:20250326T133858Z
UID:3457-1743764400-1743768000@blog.rwth-aachen.de
SUMMARY:Shang: The Influence of Tonality on Preference-Equivalent Level for Heat Pump Noise
DESCRIPTION:This study investigates how tonality influences the perceived annoyance of heat pump noise. Heat pumps produce noise mainly from fans and compressors. These noises often contain prominent tonal components that can make them particularly disturbing. In this work\, four fundamental heat pump noise samples were divided into three frequency bands\, and their tonal features were enhanced to generate transformed noise samples. A jury test was conducted using a semantic differential listening experiment\, in which rated the noises were rated on the basis of ten descriptive adjective pairs. Statistical analyses revealed that noises with higher frequency and higher tonality were significantly more annoying\, whereas low tonality noise had a relatively minor impact. Additionally\, a deep transfer learning model based on MobileNetV2 was trained on the spectrograms to classify them as „annoying“ or „not annoying\,“ achieving an accuracy of 78%. Overall\, the findings indicate that both frequency and tonality are key factors in noise annoyance\, and deep transfer learning methods can effectively predict this annoyance. \nMelden Sie sich hier an um Einladungen zu den Kolloquium-Vorträgen per E-Mail zu erhalten.\nRegister here to receive the invitations to colloquium talks via e-mail. \nZoom-Meeting-ID: 954 4073 3814\nPasswort: 450783
URL:https://blog.rwth-aachen.de/akustik/event/shang-the-influence-of-tonality-on-preference-equivalent-level-for-heat-pump-noise/
LOCATION:IHTA Seminarraum (60 Persons) and Zoom-Meeting (Hybrid)\, Kopernikusstr. 5\, Aachen\, 52074\, Deutschland
CATEGORIES:Verteidigung Masterarbeit
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