Sound spot generation and evaluation by a large scale panel loudspeaker array

Shinagawa, K.; Takemura, Hiroshi; Mizoguchi, Hiroshi

doi:10.1109/icsmc.2008.4811439

Cited by 3 publications

(2 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Currently, the technology is mastered to such an extent that it is being successfully used on a large scale in an increasing number of civil solutions. One field of knowledge in which it is more and more commonly used is the control of directivity characteristics of acoustic transducers [3][4][5][6]. The development of technology makes it possible to build both sound sources and microphones with variable, controlled directional characteristics [7].…”

Section: Introductionmentioning

confidence: 99%

The use of directional transducers to reduce exposure to noise

Makarewicz¹,

Morzyński²,

Pleban³

2022

New Techniques and Methods for Noise and Vibration Measuring, Assessing and Reducing. Digital Monograph

View full text Add to dashboard Cite

The technological development of sound-emitting and measuring transducers, as well as the increase in the computing power of signal processors, enable the implementation of new methods of reducing noise exposure. They are based on shaping the directivity characteristics of the transducers in such a way that, in the case of actuators, the levels of the produced sound do not exceed the permissible values in places where people are, and in the case of measuring elements, they increase the comfort of work and reduce the noise produced by the employees themselves. The article presents the principles of shaping the directivity characteristics of loudspeakers and microphones in the form of loudspeaker and microphone arrays and describes the principle of operation of a narrowband parametric transducer. The potential danger of exposure to noise generated by parametric matrices is presented. The possibilities of reducing exposure to noise with the use of directional actuating and measuring transducers have been described. The article focuses on noise of a specific nature, as it mainly concerns sounds intentionally generated in the human environment.

show abstract

Section: Introductionmentioning

confidence: 99%

The use of directional transducers to reduce exposure to noise

Makarewicz¹,

Morzyński²,

Pleban³

2022

New Techniques and Methods for Noise and Vibration Measuring, Assessing and Reducing. Digital Monograph

View full text Add to dashboard Cite

show abstract

“…Hence, the loudspeaker array normally requires a large scale of several meters to obtain sharp directivities for projecting the low-frequency (<2 kHz) sounds. In later developments of the "invisible messenger", Tamai et al [TKM04] and Shinagawa et al [STM08] used a 128-channel loudspeaker array to generate the sound spot more effectively, but the complexity and cost of the system noticeably increased. Thus, the loudspeaker array is not viable for a range of applications, where the dimension and power consumption of the directional sound system are critical design criteria.…”

Section: Research Area and Motivationmentioning

confidence: 99%