Acoustic pulse reflectometry for the measurement of horn crooks

A simple and novel method for acoustic streaming power measurement of ultrasonic horn

Ultrasonic horn with transfer of acoustic wave into an aqueous solution results in unique properties. When, transfer of sound wave into a liquid results in liquid movement in the direction of wave propagation which gradually loses its energy due to the viscous friction. This wave motion induces a flow which is known as acoustic streaming or micro-streaming. In this article, a simple innovative ...

Acoustic Pulse Reflectometry for Measurement of the Vocal Tract with Application in Voice Synthesis

Acoustic pulse reflectometry for the measurement of musical wind instruments

The bore profile and input impedance of a musical wind instrument provide valuable information about its acoustical properties. The time domain technique of acoustic pulse reflectometry can be used to measure the input impulse response of a tubular object, such as a wind instrument, from which both its bore profile and input impedance can be calculated. In this thesis, after a discussion of the...

Leak detection in pipes using acoustic pulse reflectometry

This paper discusses the measurement of the acoustical properties of tubular systems using pulse reflectometry. The technique involves the injection of a sound pulse into the object under investigation and the recording of the resultant reflections. Analysis of the reflections gives information about the bore profile and input impedance of the object. The effect of small leaks on both of these ...

Acoustic pulse reflectometry in musical wind instrument research

Criteria for the design of an acoustic pulse reflectometer specifically intended for musical instrument research are discussed. Different types of pulse source are considered, and various approaches to the signal processing of the reflected pulse are evaluated., Finally, the practical utility of the technique for instrument designers and manufacturers is discussed.