| 1. |
- Asutay, Erkin, 1982, et al.
(författare)
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Development of methodology for documentation of key action properties and haptie sensation of pipe organ playing
- 2012
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Ingår i: Acoustics Bulletin. - : Institute of Acoustics. - 0308-437X. ; 37:5, s. 42-44
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Tidskriftsartikel (refereegranskat)abstract
- Musical instruments provide auditory, visual and tactile feedback to the performer. The organist hears the pipes sounding as well as the contribution of room acoustics, sees the console, smells the air of the room, and feels the key action properties through his or her fingers and feet. Thus just as perception of most objects and events is multisensory, the sensation and perception of instrument playing are also multisensory. Within the project, The Organ as Memory Bank, we investigate the underlying dimensions of haptics in pipe organ playing, focusing on the mechanical manual-key action. This research involves both objective and subjective characterisation of the key action. Objective characterisation focuses on mechanical construction of the key and trackers and how it shapes the tactile feedback. The dynamic behaviour of the keys is measured as a function of key-fall and velocity as keys are pressed using a controllable linear actuator and characterized by objective parameters. The subjective characterisation of the haptics of organ playing is initially surveyed online. Semantic differential scales, which are devised based on the results of the survey, will be used in subjective experiments to reveal the underlying dimensions. Finally the objective (physical) and subjective (perceptual) characteristics will be linked to reveal the salient sensorial key action properties.
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| 2. |
- Asutay, Erkin, 1982, et al.
(författare)
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Emoacoustics : A Study of the Psychoacoustical and Psychological Dimensions of Emotional Sound Design
- 2012
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Ingår i: Journal of The Audio Engineering Society. - : Audio Engineering Society. - 1549-4950. ; 60:1-2, s. 21-28
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Tidskriftsartikel (refereegranskat)abstract
- Even though traditional psychoacoustics has provided indispensable knowledge about auditory perception, it has, in its narrow focus on signal characteristics, neglected listener and contextual characteristics. To demonstrate the influence of the meaning the listener attaches to a sound in the resulting sensations we used a Fourier-time-transform processing to reduce the identifiability of 18 environmental sounds. In a listening experiment, 20 subjects listened to and rated their sensations in response to, first, all the processed stimuli and then, all original stimuli, without being aware of the relationship between the two groups. Another 20 subjects rated only the processed stimuli, which were primed by their original counterparts. This manipulation was used in order to see the difference in resulting sensation when the subject could tell what the sound source is. In both tests subjects rated their emotional experience for each stimulus on the orthogonal dimensions of valence and arousal, as well as perceived annoyance and perceived loudness for each stimulus. They were also asked to identify the sound source. It was found that processing caused correct identification to reduce substantially, while priming recovered most of the identification. While original stimuli induced a wide range of emotional experience, reactions to processed stimuli were emotionally neutral. Priming manipulation reversed the effects of processing to some extent. Moreover, even though the 5th percentile Zwickers-loudness (N5) value of most of the stimuli was reduced after processing, neither perceived loudness nor auditory-induced emotion changed accordingly. Thus indicating the importance of considering other factors apart from the physical sound characteristics in sound design.
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| 3. |
- Asutay, Erkin, 1982, et al.
(författare)
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Emoacoustics: a study on the physical and psychological dimensions of sound design
- 2010
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Ingår i: 3rd Int. Workshop on Perceptual Quality of Systems, 2010, Bautzen, Germany. - 1680-8908. ; , s. 35-39
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Konferensbidrag (refereegranskat)abstract
- Psychoacoustical research provided indispensible knowledge on how human audition works, which is necessary for successful sound design applications. It may, however, be argued that traditional psychoacoustics, in its narrow focus on signal characteristics, has neglected listener and contextual characteristics. Thus, to demonstrate the influence of meaning the listener attaches to a sound we used an FFT processing to reduce the identifiability of 18 environmental sounds, since source identification is central to meaning attribution. In a listening experiment, 20 subjects listened to and rated all the processed stimuli first and then original stimuli, without being aware of the existence of two sets. Another 20 subjects rated only the processed stimuli, which were primed by their original counterparts. This manipulation was used in order to see the difference when the subject could tell what the sound source is. In both tests subjects rated their emotional experience for each stimulus on the orthogonal dimensions of valence and arousal, as well as perceived annoyance and perceived loudness for each stimulus. They were also asked to identify the sound source. It was found that processing caused correct identification to reduce substantially, while priming recovered most of the identification. While original stimuli induced a wide range of emotional experience, reactions to processed stimuli were affectively neutral. Priming manipulation reversed the effects of processing to some extent. Moreover, even though Zwickers-loudness value of most of the stimuli was reduced after processing, perceived loudness was only decreased for affectively negative stimuli.
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| 4. |
- Asutay, Erkin, 1982, et al.
(författare)
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Haptic sensation in organ playing
- 2010
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Ingår i: Haptic Audio Interaction Design 2010, Copenhagen, Denmark.
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- This paper presents a new research project, which aims toreveal the elements of haptic sensation in playing pipeorgan with mechanical tracker actions. In order to reach this goal sets of experiments will be carried out. Layout of these experiments are (1) measuring manual key signatures and analyzing them together with the interviews with expert organists to study the extent they can feel and communicate key properties, (2) measuring dynamical properties of key action, recording sound and recording organist’s movements simultaneously during performance, and (3) running psychophysical experiments on expert organists using an experimental keyboard where key action can be simulated and altered. The outcome of this research project will contribute to organ building and documentation and new class of haptics-enabled digital musical instruments.
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| 5. |
- Barbagallo, Mathias, et al.
(författare)
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Modulation and demodulation of steerable ultrasound beams for audio transmission and rendering
- 2008
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Ingår i: 11th International Conference on Digital Audio Effects, DAFx 2008; Espoo; Finland; 1 September 2008 through 4 September 2008. - 9789512295173 ; , s. 227-232
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Konferensbidrag (refereegranskat)abstract
- Nonlinear effects in ultrasound propagation can be used for generating highly directive audible sound. In order to do so, we can modulate the amplitude of the audio signal and send it to an ultrasound transducer. When played back at a sufficiently high sound pressure level, due to a nonlinear behavior of the medium, the ultrasonic signal gets self-demodulated. The resulting signal has two important characteristics: that of becoming audible; and that of having the same directivity properties of the ultrasonic carrier frequency. In this paper we describe the theoretical advantages of singlesideband (SSB) modulation versus a standard amplitude modulation (AM) scheme for the above-described application. We describe our near-field soundfield measuring experiments, and propose steering solutions for the array using two different types of transducers, piezoelectric or electrostatic, and the proper supporting hardware.
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| 6. |
- Genell, Anders, 1974, et al.
(författare)
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Components in evaluation of complex interior truck sounds
- 2006
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Ingår i: Journal of Low Frequency Noise and Vibration. - 0263-0923. ; 25:4, s. 227-237
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Tidskriftsartikel (refereegranskat)abstract
- In order to investigate influences on assessment of interior truck sounds two experiments have been carried out with emphasis on the low frequency content. In the first experiment the participants were presented with recorded sound from the interior of a truck cabin, with different alterations of the low frequency content. In the second experiment the balance between low and high frequency content was altered for the recorded sounds. Three main dimensions important for the assessment of truck sounds were found: an Annoyance factor, a Wakefulness factor and a Quality factor. Additionally it was found that a wellsuited spectral balance could improve positive impressions of truck sound.
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| 7. |
- Genell, Anders, 1974, et al.
(författare)
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Multi-sensory congruence in vehicle sound quality assessment: effects of vibration and irrelevant emotional primes on affective reactions and evaluations of product sounds
- 2010
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Ingår i: Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering. - 2041-2991 .- 0954-4070. ; 224:D10, s. 1303-1310
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Tidskriftsartikel (refereegranskat)abstract
- A listening test was performed where a group of professional truck drivers were asked to rate their impressions of binaurally recorded interior truck sound of different levels, while subjected to different vibration levels in the steering wheel and in the foot rest of a truck simulator. The hypothesis was that, if the sound and vibrations had the same relative levels as the original environment inside a real truck cabin, the emotional reactions would not be as negative as if either of the modalities was significantly increased relative to the other. The results indicate some support for this hypothesis. In addition, the effects of irrelevant emotional primes on sound quality assessment were studied. The results are discussed in relation to multi-modal theories of emotional sound design for vehicle interiors.
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| 8. |
- Kleiner, Mendel, 1946
(författare)
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Acoustics and Audio Technology
- 2011
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Bok (övrigt vetenskapligt/konstnärligt)abstract
- Acoustics and Audio Technology, Third Edition, is an introductory text for students of sound and vibration as well as electrical and electronic engineering, civil and mechanical engineering, computer science, signals and systems, and engineering physics. A fundamental knowledge of basic engineering mathematics and physics is assumed. Problems are included at the end of the chapters and a solutions manual is available to instructors. This completely revised and expanded classroom-tested third edition covers the physical background to and mathematical treatment of: sound propagation, the properties of human hearing, the generation and radiation of sound as well as architectural acoustics, the technologies used for pickup, recording, and reproduction of sound in various environments, and much more.
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| 9. |
- Kleiner, Mendel, 1946, et al.
(författare)
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Acoustics of Small Rooms
- 2014
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Bok (övrigt vetenskapligt/konstnärligt)abstract
- Much time is spent working out how to optimize the acoustics of large rooms, such as auditoria, but the acoustics of small rooms and environments can be just as vital. The expensive sound equipment of a recording studio or the stereo in a car or living room is likewise rendered useless if the acoustic environment is not right for them. Changes in wavelength to room size ratio and the time difference between the direct and reflected sound at the listening location mean that the acoustics of small spaces are quite different to those of large spaces. Tackling these specific aspects of physics, sound perception, and applications for small spaces, Acoustics of Small Rooms brings together important facets of small room acoustics. Divided into clear sections, it covers: Sound propagation—the effects of boundaries, sound absorbers, and time conditions; Physiology and psychoacoustics; Methods and techniques of room and sound field optimization; Examples of how these principles apply to control rooms, stereo, surround and home theater, car compartments, and music practice rooms; Measurement and modeling techniques.
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| 10. |
- Kleiner, Mendel, 1946
(författare)
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Acoustics of Voice and Music in Jewish Worship Spaces
- 2008
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Ingår i: Proceedings of Meetings on Acoustics. ; 1:1
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Konferensbidrag (refereegranskat)abstract
- The history of Jewish worship space, the organization, and some of the customs of Jewish worship are discussed. Thevarious strands of Jewish worship are presented as they relate to the worship space and its acoustics. The architectural andacoustic features of the various types of Jewish worship spaces and how these relate to the tradition are then presented.The difficulties and possibilities in using sound reinforcement in Jewish worship spaces are noted. Finally, the noiseissues are discussed from the viewpoint of signal-to-noise ratios for speech intelligibility. The intent is to provide a backgroundfor thorough acoustical analysis.
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