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

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Abstract

Two methods to measure the acoustic input impedance of a horn are compared. 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 and minimum sound pressure level in the tube. Secondly we applied a direct method. 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	1-10
Number of pages	10
Publication status	Published - 1996
Event	100th Convention of the Audio Engineering Society 1996 - Bella Center, Copenhagen, Denmark Duration: 11 May 1996 → 14 May 1996 Conference number: 100

Conference

Conference	100th Convention of the Audio Engineering Society 1996
Abbreviated title	AES 1996
Country/Territory	Denmark
City	Copenhagen
Period	11/05/96 → 14/05/96

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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. 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 and minimum sound pressure level in the tube. Secondly we applied a direct method. 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 simulatedmodels.",

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

year = "1996",

language = "English",

pages = "1--10",

note = "100th Convention of the Audio Engineering Society 1996, AES 1996 ; Conference date: 11-05-1996 Through 14-05-1996",

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T1 - Comparison of Two Methods for Measurement of Horn Input Impedance

AU - Schurer, Hans

AU - Annema, Peter

AU - de Bree, Hans–Elias

AU - Slump, Cornelis H.

AU - Herrmann, Otto E.

N1 - Conference code: 100

PY - 1996

Y1 - 1996

N2 - Two methods to measure the acoustic input impedance of a horn are compared. 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 and minimum sound pressure level in the tube. Secondly we applied a direct method. 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 simulatedmodels.

AB - Two methods to measure the acoustic input impedance of a horn are compared. 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 and minimum sound pressure level in the tube. Secondly we applied a direct method. 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 simulatedmodels.

M3 - Paper

SP - 1

EP - 10

T2 - 100th Convention of the Audio Engineering Society 1996

Y2 - 11 May 1996 through 14 May 1996

ER -

Comparison of Two Methods for Measurement of Horn Input Impedance

Abstract

Conference

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