Comparison of two methods for measurement of horn input impedance

Hans Schurer; Peter Annema; Hans–Elias De Bree; Cornelis H. Slump; Otto E. Herrmann

Comparison of two methods for measurement of horn input impedance

Hans Schurer^*, Peter Annema, Hans–Elias De Bree, Cornelis H. Slump, Otto E. Herrmann

^*Corresponding author for this work

Research output: Contribution to journal › Review article › Academic › peer-review

2 Citations (Scopus)

Abstract

Two methods to measure the acoustic input impedance of a horn are compared. The first method measures standing-wave patterns in a tube which is loaded by the horn. The input impedance is calculated from the position of the first minimum in the standing-wave pattern and the ratio of maximum to minimum sound pressure levels in the tube. Second a direct method was applied. A novel flow sensor, the microflown, is used together with a pressure microphone, which are mounted in the throat of the horn. Results from both measurements are compared with simulated models.

Original language	English
Pages (from-to)	1119-1125
Journal	AES: Journal of the Audio Engineering Society
Volume	46
Issue number	12
Publication status	Published - 1 Dec 1998

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title = "Comparison of two methods for measurement of horn input impedance",

abstract = "Two methods to measure the acoustic input impedance of a horn are compared. The first method measures standing-wave patterns in a tube which is loaded by the horn. The input impedance is calculated from the position of the first minimum in the standing-wave pattern and the ratio of maximum to minimum sound pressure levels in the tube. Second a direct method was applied. A novel flow sensor, the microflown, is used together with a pressure microphone, which are mounted in the throat of the horn. Results from both measurements are compared with simulated models.",

author = "Hans Schurer and Peter Annema and {De Bree}, Hans–Elias and Slump, {Cornelis H.} and Herrmann, {Otto E.}",

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AU - Schurer, Hans

AU - Annema, Peter

AU - De Bree, Hans–Elias

AU - Slump, Cornelis H.

AU - Herrmann, Otto E.

PY - 1998/12/1

Y1 - 1998/12/1

N2 - Two methods to measure the acoustic input impedance of a horn are compared. The first method measures standing-wave patterns in a tube which is loaded by the horn. The input impedance is calculated from the position of the first minimum in the standing-wave pattern and the ratio of maximum to minimum sound pressure levels in the tube. Second a direct method was applied. A novel flow sensor, the microflown, is used together with a pressure microphone, which are mounted in the throat of the horn. Results from both measurements are compared with simulated models.

AB - Two methods to measure the acoustic input impedance of a horn are compared. The first method measures standing-wave patterns in a tube which is loaded by the horn. The input impedance is calculated from the position of the first minimum in the standing-wave pattern and the ratio of maximum to minimum sound pressure levels in the tube. Second a direct method was applied. A novel flow sensor, the microflown, is used together with a pressure microphone, which are mounted in the throat of the horn. Results from both measurements are compared with simulated models.

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M3 - Review article

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EP - 1125

JO - Journal of the Audio Engineering Society

JF - Journal of the Audio Engineering Society

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