Auralization of a car pass-by using impulse responses Ccmputed with a wave-based method

Fotis Georgiou, Maarten Hornikx (Corresponding author), Armin Kohlrausch (Corresponding author)

Research output: Contribution to journalArticleAcademicpeer-review

1 Citation (Scopus)

Abstract

Auralization of traffic noise can be of great value for city planners and in the communication to citizens. In inner city environments, auralization of traffic noise based on predictions might require a wave-based method for the low frequencies. In this paper, a method to auralize a car pass-by using binaural impulse responses (BIRs) computed with the wave-based pseudospectral time-domain method (PSTD) in two dimensions is presented. A dry synthesized car signal is convolved with the BIRs for different locations in the street, and cross-fade windows are used in order to create a smooth transition between the source positions. Auralizations were performed for the simplified scenarios where buildings are absent, and for an environment where a long flat wall is located behind the car, opposite from the receiver. A same-different listening test was carried out in order to investigate whether increasing the angular spacing between the discrete source positions affects the perception of the car pass-by auralizations. Signal detection theory (SDT) was used for the design and analysis of the listening test. Results showed that differences exist, although they are difficult to notice. On average, 52.3% of the subjects found it almost impossible to spot any difference between auralizations with larger angular spacing (up to 10°) compared to the reference auralization (2° angular spacing).
LanguageEnglish
Pages381-391
Number of pages11
JournalActa Acustica united with Acustica
Volume105
Issue number2
DOIs
StatePublished - 1 Mar 2019

Fingerprint

impulses
spacing
traffic
streets
signal detection
receivers
communication
low frequencies
predictions
Car
Impulse
Waves
Spacing
Traffic

Keywords

  • Auralization
  • Car auralization
  • Urban acoustics
  • Acoustics
  • Wave-Based methdods

Cite this

@article{d41993f808c6415490a2097454d99fbb,
title = "Auralization of a car pass-by using impulse responses Ccmputed with a wave-based method",
abstract = "Auralization of traffic noise can be of great value for city planners and in the communication to citizens. In inner city environments, auralization of traffic noise based on predictions might require a wave-based method for the low frequencies. In this paper, a method to auralize a car pass-by using binaural impulse responses (BIRs) computed with the wave-based pseudospectral time-domain method (PSTD) in two dimensions is presented. A dry synthesized car signal is convolved with the BIRs for different locations in the street, and cross-fade windows are used in order to create a smooth transition between the source positions. Auralizations were performed for the simplified scenarios where buildings are absent, and for an environment where a long flat wall is located behind the car, opposite from the receiver. A same-different listening test was carried out in order to investigate whether increasing the angular spacing between the discrete source positions affects the perception of the car pass-by auralizations. Signal detection theory (SDT) was used for the design and analysis of the listening test. Results showed that differences exist, although they are difficult to notice. On average, 52.3{\%} of the subjects found it almost impossible to spot any difference between auralizations with larger angular spacing (up to 10°) compared to the reference auralization (2° angular spacing).",
keywords = "Auralization, Car auralization, Urban acoustics, Acoustics, Wave-Based methdods",
author = "Fotis Georgiou and Maarten Hornikx and Armin Kohlrausch",
year = "2019",
month = "3",
day = "1",
doi = "10.3813/AAA.919321",
language = "English",
volume = "105",
pages = "381--391",
journal = "Acta Acustica united with Acustica",
issn = "1610-1928",
publisher = "S. Hirzel Verlag GmbH",
number = "2",

}

TY - JOUR

T1 - Auralization of a car pass-by using impulse responses Ccmputed with a wave-based method

AU - Georgiou,Fotis

AU - Hornikx,Maarten

AU - Kohlrausch,Armin

PY - 2019/3/1

Y1 - 2019/3/1

N2 - Auralization of traffic noise can be of great value for city planners and in the communication to citizens. In inner city environments, auralization of traffic noise based on predictions might require a wave-based method for the low frequencies. In this paper, a method to auralize a car pass-by using binaural impulse responses (BIRs) computed with the wave-based pseudospectral time-domain method (PSTD) in two dimensions is presented. A dry synthesized car signal is convolved with the BIRs for different locations in the street, and cross-fade windows are used in order to create a smooth transition between the source positions. Auralizations were performed for the simplified scenarios where buildings are absent, and for an environment where a long flat wall is located behind the car, opposite from the receiver. A same-different listening test was carried out in order to investigate whether increasing the angular spacing between the discrete source positions affects the perception of the car pass-by auralizations. Signal detection theory (SDT) was used for the design and analysis of the listening test. Results showed that differences exist, although they are difficult to notice. On average, 52.3% of the subjects found it almost impossible to spot any difference between auralizations with larger angular spacing (up to 10°) compared to the reference auralization (2° angular spacing).

AB - Auralization of traffic noise can be of great value for city planners and in the communication to citizens. In inner city environments, auralization of traffic noise based on predictions might require a wave-based method for the low frequencies. In this paper, a method to auralize a car pass-by using binaural impulse responses (BIRs) computed with the wave-based pseudospectral time-domain method (PSTD) in two dimensions is presented. A dry synthesized car signal is convolved with the BIRs for different locations in the street, and cross-fade windows are used in order to create a smooth transition between the source positions. Auralizations were performed for the simplified scenarios where buildings are absent, and for an environment where a long flat wall is located behind the car, opposite from the receiver. A same-different listening test was carried out in order to investigate whether increasing the angular spacing between the discrete source positions affects the perception of the car pass-by auralizations. Signal detection theory (SDT) was used for the design and analysis of the listening test. Results showed that differences exist, although they are difficult to notice. On average, 52.3% of the subjects found it almost impossible to spot any difference between auralizations with larger angular spacing (up to 10°) compared to the reference auralization (2° angular spacing).

KW - Auralization

KW - Car auralization

KW - Urban acoustics

KW - Acoustics

KW - Wave-Based methdods

U2 - 10.3813/AAA.919321

DO - 10.3813/AAA.919321

M3 - Article

VL - 105

SP - 381

EP - 391

JO - Acta Acustica united with Acustica

T2 - Acta Acustica united with Acustica

JF - Acta Acustica united with Acustica

SN - 1610-1928

IS - 2

ER -