Effects of microphone arrangement on the accuracy of a spherical microphone array (SENZI) in acquiring high-definition 3D sound space information

2011 ◽  
pp. 314-323 ◽  
Author(s):  
Shuichi Sakamoto ◽  
Jun'ichi Kodama ◽  
Satoshi Hongo ◽  
Takuma Okamoto ◽  
Yukio Iwaya ◽  
...  
Keyword(s):  
Microphone Array ◽  
High Definition ◽  
3D Sound

A display-mounted high-quality stereo microphone array for high-definition videophone system

2008 ◽  
Vol 54 (2) ◽  
pp. 778-786 ◽  
Author(s):  
Yusuke Hioka ◽  
Manabu Okamoto ◽  
Kazunori Kobayashi ◽  
Yoichi Haneda ◽  
Akitoshi Kataoka
Keyword(s):  
Microphone Array ◽  
High Definition ◽  
High Quality

scholarly journals Localisation of Vertical Auditory Phantom Image with Band-limited Reductions of Vertical Interchannel Crosstalk

2020 ◽  
Vol 10 (4) ◽  
pp. 1490
Author(s):  
Rory Wallis ◽  
Hyunkook Lee
Keyword(s):  
Microphone Array ◽  
Practical Implication ◽  
Three Dimensional ◽  
Source Image ◽  
Octave Band ◽  
Sound Sources ◽  
Phantom Image ◽  
3D Sound ◽  
Subjective Experiment ◽  
Band Limited

Direct sound that is captured by the upper layer of a three-dimensional (3D) microphone array is typically regarded as vertical interchannel crosstalk (VIC), since it tends to produce an undesired effect of the sound source image being elevated from the ear-level loudspeaker layer position (0°) in reproduction. The present study examined the effectiveness of band-limited VIC attenuation methods on preventing the vertical image shift problem. In a subjective experiment, five natural sound sources were presented as vertically-oriented phantom images while using two stereophonic loudspeaker pairs elevated at 0° and 30° in front of the listener. The upper layer signal (i.e., VIC) was attenuated in various octave-band-dependent conditions that were based on vertical localisation thresholds obtained from previous studies. The results showed that it was possible to achieve the goal of panning the phantom image at the same height as the image produced by the main loudspeaker layer by attenuating only a single octave band with the centre frequency of 4 kHz or 8 kHz or multiple bands at 1 kHz and above. This has a useful practical implication in 3D sound recording and mixing where a vertically oriented phantom image is rendered.

Probabilistic 3D Sound Source Mapping System Based on Monte Carlo Localization Using Microphone Array and LIDAR

2017 ◽  
Vol 29 (1) ◽  
pp. 94-104 ◽  
Author(s):  
Ryo Tanabe ◽  
◽  
Yoko Sasaki ◽  
Hiroshi Takemura ◽  
Keyword(s):  
Monte Carlo ◽  
Sound Source ◽  
Degrees Of Freedom ◽  
Microphone Array ◽  
Music Algorithm ◽  
Sensor Unit ◽  
3D Sound ◽  
Localization And Mapping ◽  
Mapping System ◽  
Monte Carlo Localization

[abstFig src='/00290001/09.jpg' width='300' text='3D sound source environmental map' ] The study proposes a probabilistic 3D sound source mapping system for a moving sensor unit. A microphone array is used for sound source localization and tracking based on the multiple signal classification (MUSIC) algorithm and a multiple-target tracking algorithm. Laser imaging detection and ranging (LIDAR) is used to generate a 3D geometric map and estimate the location of its six-degrees-of-freedom (6 DoF) using the state-of-the-art gyro-integrated iterative closest point simultaneous localization and mapping (G-ICP SLAM) method. Combining these modules provides sound detection in 3D global space for a moving robot. The sound position is then estimated using Monte Carlo localization from the time series of a tracked sound stream. The results of experiments using the hand-held sensor unit indicate that the method is effective for arbitrary motions of the sensor unit in environments with multiple sound sources.

scholarly journals Quantification of the Psychoacoustic Effect of Noise from Small Unmanned Aerial Vehicles

2021 ◽  
Vol 18 (17) ◽  
pp. 8893
Author(s):  
C. T. Justine Hui ◽  
Michael J. Kingan ◽  
Yusuke Hioka ◽  
Gian Schmid ◽  
George Dodd ◽  
...  
Keyword(s):  
Unmanned Aerial Vehicles ◽  
Microphone Array ◽  
Cognitive Task ◽  
Human Perception ◽  
Reproduction System ◽  
3D Sound ◽  
Aerial Vehicles ◽  
Cognitive Distraction ◽  
The University ◽  
Noise Metrics

This paper presents the results of a study evaluating the human perception of the noise produced by four different small quadcopter unmanned aerial vehicles (UAVs). This study utilised measurements and recordings of the noise produced by the quadcopter UAVs in hover and in constant-speed flight at a fixed altitude. Measurements made using a ½″ microphone were used to calculate a range of different noise metrics for each noise event. Noise recordings were also made using a spherical microphone array (an Eigenmike system). The recordings were reproduced using a 3D sound reproduction system installed in a large anechoic chamber located at The University of Auckland. Thirty-seven participants were subjected to the recordings and asked to rate their levels of annoyance in response to the noise, and asked to perform a simple cognitive task in order to assess the level of distraction caused by the noise. This study discusses the noise levels measured during the test and how the various noise metrics relate to the annoyance ratings. It was found that annoyance strongly correlates with the sound pressure level and loudness metrics, and that there is a very strong correlation between the annoyance caused by a UAV in hover and in flyby at the same height. While some significant differences between the distraction caused by the UAV noise for different cases were observed in the cognitive distraction test, the results were inconclusive. This was likely due to a ceiling effect observed in the participants’ test scores.

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