scholarly journals Subjective evaluation in acoustics through listening tests: difference testing in sound insulation, room acoustics and soundscapes

2021 ◽  
Author(s):  
Daniel de la Prida Caballero
Keyword(s):  
Subjective Evaluation ◽  
Room Acoustics ◽  
Sound Insulation ◽  
Listening Tests

A BRIEF OVERVIEW OF SOUND REPRODUCTION SYSTEMS FOR LISTENING TESTS USED IN THE SUBJECTIVE EVALUATION OF SOUND INSULATION

Akustika ◽  
2020 ◽  
pp. 32-39
Author(s):  
Dominik Kisić ◽  
Marko Horvat ◽  
Kristian Jambrošić ◽  
Vedran Planinec
Keyword(s):  
Subjective Evaluation ◽  
Sound Insulation ◽  
Listening Test ◽  
Sound Reproduction ◽  
Listening Tests ◽  
Acoustic Comfort

This article does not present an in-depth overview but is meant to serve as an introduction to the newcomers to this field of acoustics. A brief explanation is given for different sound reproduction formats (Ambisonics and binaural), together with some of the standards, and listening test tools used in the design of listening tests. Primarily the listening tests in the field of subjective evaluation of sound insulation and acoustic comfort have been discussed.

Auf leisen Sohlen/On soft feet

2019 ◽  
Vol 14 (05) ◽  
pp. 151-154
Author(s):  
J. Grünwald
Keyword(s):  
Temperature Control ◽  
Well Being ◽  
Room Acoustics ◽  
Sound Insulation ◽  
Open Plan ◽  
Concert Halls ◽  
Important Quality

Ob Großraumbüros, Konzerthallen oder Auditorien – bau- und raumakustische Eigenschaften stellen nicht nur ein wichtiges Qualitätsmerkmal für Gebäude dar, sie bestimmen auch maßgeblich das Wohlgefühl der Nutzer. Wo bisherige Maßnahmen zum Schallschutz mit dem Wunsch nach einer idealen Temperierung von Gebäuden als unvereinbar galten, stellt die Weiss Doppelbodensysteme GmbH, Traditionsunternehmen aus dem schwäbischen Lindach, ein Produkt vor, welches es ermöglicht, beide Kriterien miteinander zu vereinen: Den Akustik-Doppelboden.   Summary Whether open-plan offices, concert halls or auditoriums – building and room acoustics not only represent an important quality feature for buildings, they also significantly determine the well-being of the users. Where previous measures for sound insulation were considered incompatible with the desire for an ideal temperature control of buildings, Weiss Doppelbodensysteme GmbH, a traditional company from the Swabian town of Lindach, presents a product that makes it possible to combine both criteria: the acoustic double floor.

Subjective Evaluation of Three Headphone-Based Virtual Sound Source Positioning Methods Including Differential Head-Related Transfer Function

2016 ◽  
Vol 41 (3) ◽  
pp. 437-447
Author(s):  
Dominik Storek ◽  
Frantisek Rund ◽  
Petr Marsalek
Keyword(s):  
Transfer Function ◽  
Sound Source ◽  
Subjective Evaluation ◽  
Sound Localisation ◽  
Signal Features ◽  
Listening Tests ◽  
Positioning Method ◽  
Head Related Transfer Function ◽  
Positioning Algorithm ◽  
Source Positioning

Abstract This paper analyses the performance of Differential Head-Related Transfer Function (DHRTF), an alternative transfer function for headphone-based virtual sound source positioning within a horizontal plane. This experimental one-channel function is used to reduce processing and avoid timbre affection while preserving signal features important for sound localisation. The use of positioning algorithm employing the DHRTF is compared to two other common positioning methods: amplitude panning and HRTF processing. Results of theoretical comparison and quality assessment of the methods by subjective listening tests are presented. The tests focus on distinctive aspects of the positioning methods: spatial impression, timbre affection, and loudness fluctuations. The results show that the DHRTF positioning method is applicable with very promising performance; it avoids perceptible channel coloration that occurs within the HRTF method, and it delivers spatial impression more successfully than the simple amplitude panning method.

Subjective evaluation of the combining effect between the virtual bass and head related transfer functions

2021 ◽  
Vol 263 (5) ◽  
pp. 1488-1496
Author(s):  
Yunqi Chen ◽  
Chuang Shi ◽  
Hao Mu
Keyword(s):  
Fundamental Frequency ◽  
Sound Source ◽  
Transfer Functions ◽  
Subjective Evaluation ◽  
Low Frequency ◽  
Localization Accuracy ◽  
Frequency Sound ◽  
Listening Tests ◽  
Listening Experience ◽  
Missing Fundamental

Earphones are commonly equipped with miniature loudspeaker units, which cannot transmit enough power of low-frequency sound. Meanwhile, there is often only one loudspeaker unit employed on each side of the earphone, whereby the multi-channel spatial audio processing cannot be applied. Therefore, the combined usage of the virtual bass (VB) and head-related transfer functions (HRTFs) is necessary for an immersive listening experience with earphones. However, the combining effect of the VB and HRTFs has not been comprehensively reported. The VB is developed based on the missing fundamental effect, providing that the presence of harmonics can be perceived as their fundamental frequency, even if the fundamental frequency is not presented. HRTFs describe the transmission process of a sound propagating from the sound source to human ears. Monaural audio processed by a pair of HRTFs can be perceived by the listener as a sound source located in the direction associated with the HRTFs. This paper carries out subjective listening tests and their results reveal that the harmonics required by the VB should be generated in the same direction as the high-frequency sound. The bass quality is rarely distorted by the presence of HRTFs, but the localization accuracy is occasionally degraded by the VB.

Methodology for the subjective evaluation of airborne sound insulation through 2-AC and Thurstonian models

2020 ◽  
Vol 157 ◽  
pp. 107011
Author(s):  
Daniel de la Prida ◽  
Antonio Pedrero ◽  
María Ángeles Navacerrada ◽  
Alexander Díaz-Chyla
Keyword(s):  
Subjective Evaluation ◽  
Sound Insulation ◽  
Airborne Sound ◽  
Thurstonian Models

Electroencephalogram (EEG) responses to indoor sound sources in wooden residential buildings

2021 ◽  
Vol 263 (4) ◽  
pp. 1989-1998
Author(s):  
Alessia Frescura ◽  
Pyoung Jik Lee ◽  
Jeong-Ho Jeong ◽  
Yoshiharu Soeta
Keyword(s):  
Residential Buildings ◽  
Piano Music ◽  
Sound Insulation ◽  
Living Room ◽  
Noise Sources ◽  
Sound Sources ◽  
Listening Tests ◽  
Eeg Data ◽  
The Impact ◽  
Electroencephalogram Eeg

The present study aimed to explore relationships between physiological and subjective responses to indoor sounds. Specifically, The electroencephalograms (EEG) responses to neighbour sounds in wooden dwellings were investigated. Listening tests were performed to collect EEG data in distinct acoustics scenarios. Experimental work was carried out in a laboratory with a low background noise level. A series of impact and airborne sounds were presented through loudspeakers and subwoofer, while participants sat comfortably in the simulated living room wearing the EEG headset (B-alert X24 system). The impact sound sources were an adult walking and a child running recorded in a laboratory equipped with different floor configurations. Two airborne sounds (a live conversation and a piece of classical piano music) were digitally filtered to resemble good and poor sound insulation performances of vertical partitions. The experiment consisted of two sessions, namely, the evaluation of individual sounds and the evaluation of the combined noise sources. In the second session, pairs of an impact and an airborne sound were presented. During the listening test, electroencephalography alpha reactivity (α-EEG) and electroencephalography beta reactivity (β-EEG) were monitored. In addition, participants were asked to rate noise annoyance using an 11-point scale.

Noise Perception in Residential Building Environment

2013 ◽  
Vol 649 ◽  
pp. 281-284
Author(s):  
Andrea Vargová ◽  
Monika Pavčeková
Keyword(s):  
Subjective Evaluation ◽  
Residential Building ◽  
Living Environment ◽  
Sound Insulation ◽  
Topical Issue ◽  
Healthy Living ◽  
The Real ◽  
Real Value ◽  
Building Environment

This article brings up to discussion a particularly topical issue which is the quality of sound insulation in Slovakian dwellings. An analysis of the current acoustical situation in newly built or renovated buildings is shown, as well as the importance of a subjective evaluation of acoustical comfort is highlighted. Nevertheless, it is known that the acoustical comfort is one of the most important factors of a healthy living environment and that the acoustical defects often become subject of argumentation. Concerning the growing acoustical problems in dwellings, we could debate, to what extent the real value of the apartment can be estimated.

Listening tests in room acoustics: Comparison of overall difference protocols regarding operational power

2021 ◽  
Vol 182 ◽  
pp. 108186
Author(s):  
Daniel de la Prida ◽  
Antonio Pedrero ◽  
Luis Antonio Azpicueta-Ruiz ◽  
María Ángeles Navacerrada
Keyword(s):  
Room Acoustics ◽  
Listening Tests

Problems in the Designing of Acoustic Properties of Musical Rehearsals

2016 ◽  
Vol 861 ◽  
pp. 519-526
Author(s):  
Dušan Katunský ◽  
Jana Katunská ◽  
Iveta Bullová ◽  
Richard Germánus
Keyword(s):  
Noise Pollution ◽  
Acoustic Properties ◽  
Room Acoustics ◽  
Sound Insulation ◽  
Building Structures ◽  
Internal Environment ◽  
Reverberation Time ◽  
Acoustic Performance ◽  
Methods Of Calculation ◽  
Building Acoustics

Content of the post is to describe the creation of building structures, typology, internal environment, and internal wall coverings music rehearsal for optimal acoustic performance. One of the aspects of its internal environment is reverberation time. For this variable there are several methods of calculation. Article gives an indication of how the music was the laboratory building in the center of the music created and what problems the authors in its proposal met. Article contents and solving spatial and building acoustics model music musical rehearsal building downtown. Calculation fully respects Slovak standards valid for the design of room acoustics, as well as hygiene regulations on noise pollution. Acoustically treated room should serve as a laboratory for musical performance. If the building is more proof is needed to solve the sound insulation (building acoustics) that these areas do not interfere with each other. In addressing acoustics of testing can’t talk about bad or good acoustics, but rather on the season and out of corresponding with room acoustics, respectively, with activities in it.

Subjective and Objective Quality Evaluation of Watermarked Audio

2008 ◽  
pp. 260-277 ◽  
Author(s):  
Michael Arnold
Keyword(s):  
Quality Evaluation ◽  
Subjective Evaluation ◽  
Quality Measurement ◽  
Objective Evaluation ◽  
Evaluation Standards ◽  
Whole Process ◽  
Listening Tests ◽  
Objective Quality ◽  
Audio Data

Methods for evaluating the quality of watermarked objects are detailed in this chapter. It will provide an overview of subjective and objective methods usable in order to judge the influence of watermark embedding on the quality of audio tracks. The problem associated with the quality evaluation of watermarked audio data will be presented. This is followed by a presentation of subjective evaluation standards used in testing the transparency of marked audio tracks as well as the evaluation of marked items with intermediate quality. Since subjective listening tests are expensive and dependent on many not easily controllable parameters, objective quality measurement methods are discussed in section Objective Evaluation Standards. Section Implementation of a Quality Evaluation presents the whole process of testing the quality taking into account the methods discussed in this chapter. Special emphasis is devoted to a detailed description of the test setup, item selection and the practical limitations. The last section summarizes the chapter.

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