Method and system for measuring a wideband loop sensitivity for an acoustic transducer
AssigneeBroadsound Corporation
InventorsYing-Wei Yuan, Jen-Chih Yao, Fu-Chieh Yang, Wen-Pin Lai
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Abstract
A method and system is disclosed for measuring a wideband loop sensitivity SL(f) for an acoustic transducer in an acoustic probe. A pulse signal is employed as a wideband reference signal Vr(t); and, in a pulse-echo measurement a corresponding wideband echo signal Ve(t) is obtained. A normalized loop frequency response {circumflex over (X)}(f) for the acoustic transducer is defined as a ratio of a Fourier Transform of the Ve(t) to a Fourier Transform of the Vr(t). A wideband loop sensitivity SL(f) for the acoustic transducer is defined as an absolute square of the {circumflex over (X)}(f) in decibel.
Claims18
A system for measuring a wideband loop sensitivity for an acoustic transducer among a plurality of acoustic transducers in a wideband acoustic probe, the system comprising:
- a pulse generator;
- and
- a control unit electrically coupled to the pulse generator,
- wherein
- the pulse generator is configured to be selectively electrically coupled to a predetermined load for generating, by the pulse generator, a first pulse to create a wideband signal as a reference signal, and
- the control unit includes a memory storing therein a program or firmware for causing the control unit to
- obtain a wideband reference signal Vr(t) as a reference signal for an acoustic transducer in the wideband acoustic probe, and
- obtain a function {circumflex over (V)}r(f) that is a Fourier Transform of the wideband reference signal Vr(t).
A method for measuring a wideband loop sensitivity for an acoustic transducer among a plurality of acoustic transducers in a wideband acoustic probe, the method using a pulse generator and a control unit electrically coupled to the pulse generator, the control unit including a memory storing therein a program or firmware, the method comprising:
- electrically coupling a predetermined load to the pulse generator;
- generating, by the pulse generator, a first pulse to create a wideband signal as a reference signal;
- obtaining, by the control unit, a wideband reference signal Vr(t) as a reference signal for an acoustic transducer in the wideband acoustic probe;
- and
- obtaining, by the control unit, a function {circumflex over (V)}r(f) that is a Fourier Transform of the wideband reference signal Vr(t).
Dependencies are inferred from the claim text.