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Apparatus for three-dimensional emission pattern estimation of acoustic emitters
Alberto Yoshihiro Nakano1, Artur Adolfo Falkovski1, Mayconvorgel Ibrahim Ribeiro1
1Electronic Department, Federal University of Technology-Paraná, Toledo campus, Toledo, Paraná State, 85902-490, Brazil.
The Journal of the Acoustical Society of America
|October 2, 2023
Summary
A new apparatus accurately measures acoustic emitter performance by assessing emission power across all angles. This helps identify design flaws and improve device output, reducing noise and power loss.
Area of Science:
- Acoustic Engineering
- Signal Processing
- Metrology
Background:
- Acoustic emitters often deviate from design specifications due to manufacturing variations.
- These deviations can lead to reduced performance, power loss, and unwanted noise.
- Accurate characterization of acoustic emission patterns is crucial for device optimization.
Purpose of the Study:
- To develop an apparatus for precise acoustic characterization of emitters.
- To estimate the emission power and radiation pattern in three-dimensional space.
- To provide a visual tool for analyzing acoustic source characteristics.
Main Methods:
- An apparatus featuring a turntable and an arc was constructed for acoustic measurements.
- The time-stretched pulse method was employed as a test signal.
- Signals were processed to derive emission power at various azimuth and elevation angles.
Main Results:
- The developed apparatus successfully estimated the emission power for acoustic emitters.
- A three-dimensional radiation pattern was generated from the acquired data.
- The system allows for visual analysis of acoustic emission characteristics.
Conclusions:
- The developed apparatus provides an effective method for acoustic characterization.
- Accurate measurement of emission power and radiation patterns can identify performance issues.
- This technique aids in optimizing acoustic emitter design and performance.
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