Acoustic impedance - Study guides, Class notes & Summaries

Edelman SPI review questions & Answers 2023. ______ is the distance covered by one cycle. a) pulse length b) wavelength c) cycle distance d) cycle duration ______ is the time to complete one cycle a) pulse duration b) pulse period c) period d) duration period ________ is a redirection of an ultrasound bean in many directions as a result of a rough boundary between two media: a) refraction b) Rayleigh Scattering c) scattering d) reflection _________ resolution is...

What BEST describes the effect on the patient if you continue to lower a hearing instrument's kneepoint and increase the compression ratio? Choose ALL that apply. A. a lot of gain for soft sounds B. very few speech cues in a crowded party C. little or no gain for moderately loud sounds D. too much amplification in a crowded party - ANSWER-A,B, & C What frequencies would be MOST affected by a head cold? - ANSWER-Low frequencies. 250,500 What is found on the bottom of the ear canal? - ...

What BEST describes the effect on the patient if you continue to lower a hearing instrument's kneepoint and increase the compression ratio? Choose ALL that apply. A. a lot of gain for soft sounds B. very few speech cues in a crowded party C. little or no gain for moderately loud sounds D. too much amplification in a crowded party - ANSWER-A,B, & C What frequencies would be MOST affected by a head cold? - ANSWER-Low frequencies. 250,500 What is found on the bottom of the ear canal? - ...

URR SPI Exam 1, Questions and Answers Scored A+ The Doppler shift is 5000Hz. The pulse repetition frequency is 9000Hz. Which of the following is true? A: The peak velocity is equal to 2 m/s B: Aliasing will occur C: Range ambiguity will occur D: The peak pressure gradient is 36 mmHg B: Aliasing will occur The acoustic impedance of the matching layer: A: must be much thinner than the transducer element B: usually the same material as the damping layer C: is usually very low ...

Audiology Exam 3 Questions and Answers What do behavioral tests measure? - Correct Answer ️️ -A patient's subjective perception of sound What do physiological tests measure? - Correct Answer ️️ -The objective measure of the body's response to sound What are examples of behavioral tests? - Correct Answer ️️ -Pure tone testing Speech audiometry Why are physiological tests needed? - Correct Answer ️️ -With behavioral tests, someone might not raise their hand if they're no...

) variables A wave is a traveling variations in quantities called wave _________________. A) length B) variables C) cycles D) periods D) acoustic Sound is a traveling variations in quantities called _________________ variables. A) wave B) pressure C) density D) acoustic C) 20,000 Ultrasound is a sound with a frequency greater than ____________ Hz. A) 2 B) 15 C) 20,000 D) 1540 D) pressure, density Acoustic variables include __________________, ____________, and part...

. A sound wave is: a. transverse b. electromagnetic c. mechanical, longitudinal d. transverse, longitudinal c. mechanical, longitudinal 2. A compression area of a sound wave is: a. high pressure, low density b. low pressure, low density c. high pressure, high density d. low pressure, high density c. high pressure, high density 3. A rarefaction area of a sound wave is: a. high pressure, low density b. low pressure, low density c. high pressure, high density d. low pressure, high d...

Transduction Ans: The change in sound energy from one form to another Impedance mismatch in the ear Ans: 30 dB SPL loss at the oval window Function of the middle ear Ans: Equalizes pressure Resting potential of the scala media Ans: +80 mv Transduction stages (earliest-latest) Ans: 1. Condensation/rarefaction of air molecules 2. In and out movement of the oval and round windows 3. Back and forth movements of stereocilia 4. Depolarization and hyperpolarization of hair cells 5. Phas...

Which term describes blood flow changes in response to respiration? A. Phasic B. Parabolic C. Spontaneous D. Pulsatile -answer- Phasic What is demonstrated in this image produced by a linear array to placed on a uniform tissue-mimicking phantom? A. Time gain compensation not set properly. B. System has low dynamic range. C. Transducer crystals are damaged. D. Focus control is malfunctioning. -answer- Transducer crystals are damaged What is dynamic aperture? A. Aperture that ...

immittance correct answers an all encompassing term to describe the measurements made of the tympanic membrane impedance, compliance, or admittance compliance correct answers amount ear drum is moving admittance correct answers energy through a system impedance correct answers energy that is rejected and not transmitted through a system 3 measurements of acoustic immittance meters correct answers static acoustic compliance tympanometry acoustic reflex 3 contributors to imped...