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ECU Voice Disorders > 06 - Acoustic Evaluation > Flashcards

06 - Acoustic Evaluation Flashcards

1
Q

What do we measure Objectively during Voice Acoustic Measures?

(4)

A

Frequency related parameters

Intensity related parameters

Noise related parameters – Quality

Other measures

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2
Q

What are five Frequency Related Measures?

A

Mean Fundamental Frequency

Frequency Range

Standard Deviation of Fundamental Frequency

Frequency Perturbation 

Fundamental Frequency Variation - vFo (%)

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3
Q

What is Mean Fundamental Frequency?

A

Average number of vibrations per second.

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4
Q

What is the Frequency Range?

A

Minimum and maximum.

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5
Q

What is the Standard Deviation of Fundamental Frequency?

A

Variation seen from Mean Fo.

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6
Q

What is VOICE Perturbation?

What is it measuring?

A

Variations in frequency and intensity (Jitters and Shimmers)

Mucosal Wave function

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7
Q

What are three measures of Frequency Perturbation?

A

Relative average perturbation (RAP)

Pitch perturbation quotient (PPQ)

Smoothened pitch perturbation quotient

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8
Q

What is a Jitter?

(2)`

A

Cycle-to-cycle variation in frequency (perturbation measure - irregular mov’t)

Is there stability in pitch?

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9
Q

What is a Shimmer?

(2)

A

Cycle-to-cycle variation in intensity

Is there stability in intensity?

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10
Q

What is Bandwidth?

(2)

A

Length of cycles

Lower frequencies have greater bandwidth

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11
Q

What is Fundamental Frequency Variation – vFo (%)?

A

The relative standard deviation (SD) of the period-to- period calculated fundamental

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12
Q

What are five Voice Amplitude Measures?

A

Mean amplitude

Intensity range

Standard deviation of Amplitude

Amplitude perturbation

Peak Amplitude Variation – vAm (%)

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13
Q

What is Standard deviation of Amplitude?

A

Variation seen from Mean .

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14
Q

What is Peak Amplitude Variation – vAm (%)?

(2)

A

The relative SD of the period-to-period calculated peak to-peak amplitude.

It reflects the long-term amplitude variations within the analyzed voice sample. 

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15
Q

What are three measures of Amplitude Perturbation?

A

Shimmer

Amplitude perturbation quotient (APQ)

Smoothened amplitude perturbation quotient (sAPQ)

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16
Q

What are three Noise Related Measures?

A

Noise-to-Harmonic Ratio (NHR)

Voice Turbulence Index (VTI)

Soft Phonation Index

17
Q

What is the Noise-to-Harmonic Ratio (NHR)?

(2)

A

Inharmonic Components in the 1500-4500 Hz __________________________

Harmonic Components energy in the range 70-4500 Hz

Looks at lower freqs

Bad stuff / Good stuff

Inharmonic / Harmonic

18
Q

What is the Voice Turbulence Index (VTI)?

(2)

A

Inharmonic range of 2800-5800 Hz

__________________________

Spectral Harmonic Energy in the range 70-4500 Hz

Looks at higher freqs

Bad stuff / Good stuff

Inharmonic / Harmonic

19
Q

What is the Soft Phonation Index?

A

The average ratio of Low Frequency Harmonic Energy to High Frequency Harmonic Energy

20
Q

What are three Other Objective Voice Measures?

A

Degree of Unvoiced segments (DUV)

Degree of Voice breaks (DVB)

Degree of Sub-harmonics (DSH)

21
Q

What is the Degree of Unvoiced segments (DUV)?

A

Breaks during phonation

22
Q

What is the Degree of Voice breaks (DVB)?

A

Breaks during phonation

23
Q

What is the Degree of Sub-harmonics (DSH)?

A

More sub-harmonics come with more noise

24
Q

What are Harmonics?

A

Whole number multiples of fundamental frequency (x2, x3, x4, etc.)

25
Q

What are Octaves?

A

Double the previous octave (x2, x2(2), x2(2)(2), etc.)

26
Q

What is a Spectrograph?

A

3D representation of acoustic measures

27
Q

What are five softwares that allow us to acoustical measure speech?

A

Computerized Speech Lab Multidimensional Voice Profile (MDVP)

Real Time pitch

PRAAT

Visipitch

Sonapitch

28
Q

What do MDVP measurements look like?

(2)

A

Green circle

Anything out of the green area is abnormal

29
Q

What is Electroglottography (EGG)?

(3)

A

Electrical resistance between two electrodes placed around the neck.

Only works when VF are adducting.

If it’s not working, adduction is not working properly

30
Q

How is Electroglottography (EGG) measured?

(2)

A

Place electrodes around the neck.

When a low voltage current is applied, the resistance to passage of electricity is less when the VF are in contact.

31
Q

Electroglottography (EGG)

A

A = Open Phase

B = Opening Phase

C = Closed Phase

D = Closing Phase

32
Q

What are four ECG measures?

A

Open Quotient

Closed Quotient

Speed Quotient

Speed Index

33
Q

What is an ECG Open Quotient?

(3)

A

Open Phase / Time

Complete adduction = 0 or 0%

Complete abduction = 1 or 100%

34
Q

What is an ECG Closed Quotient?

(4)

A

Contact quotient

Closed Phase / Time 

Complete adduction = 1 or 100%)

Complete abduction = 0 or 0%

35
Q

What is an ECG Speed Quotient?

A

Opening Time / Closing Time

36
Q

What is an ECG Speed Index?

(2)

A

(Sq-1) / (Sq+1)

(Opening time - Closing time) / Open phase

37
Q

Is abduction or adduction faster?

A

Adduction

38
Q

What is Inverse Filtering?

(2)

A

Voice Output (Glottal Source + Resonance)

Glottal Source (Voice Output - Resonance)

39
Q

What is Inverse Filtering used for

A

Research

ECU Voice Disorders (23 decks)

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