Lecture 17

Question 1

How does the inner ear work?

Answer 1

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Question 2

What is the idea of machine hearing?

Answer 2

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Question 3

What is the fluid dynamics of the inner ear?

Answer 3

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Question 4

What is the general cochlear?

Answer 4

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Question 5

What is the general basilar membrane?

Answer 5

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Question 6

What is the response of the basilar membrane to a short force at a particular time?

Answer 6

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Question 7

What is a good way to approximate this shape to the response of the basilar membrane? What is the equation? What are the different components?

Answer 7

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Question 8

What force do you have with a sound? What is the equation?

Answer 8

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Question 9

What does this evoke?

Answer 9

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Question 10

What is the evoked amplitude?

Answer 10

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Question 11

What is the ratio of the evoked amplitude to the provider force? What is it called?

Answer 11

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Question 12

What is the Transmission coefficient? What is the equation?

Answer 12

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Question 13

What is happening when the transmission coefficient is large? What if it is small?

Answer 13

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Question 14

What is the gammatone filter? What does the transmission coefficient look like for the gammatone filter at different frequencies?

Answer 14

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Question 15

How many gammatone filters in a cochlear?

Answer 15

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Question 16

What is a simple model for the cochlear? Draw it out?

Answer 16

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Question 17

How does the bandwidth of the gammatone vary? What does it change with?

Answer 17

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Question 18

What are the problems with gammatones as a model for the cochlea?

Answer 18

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Question 19

What is the impulse responses of a series of gammatone filters?

Answer 19

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Question 20

What is the stage after the basilar membrane? How can this be described?

Answer 20

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Question 21

What is the cochleagram? What does it do?

Answer 21

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Question 22

How does the Cochleagram work? Draw the diagram?

Answer 22

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Question 23

What is the half-way rectified?

Answer 23

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Question 24

What kind of processing step is this?

Answer 24

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Question 25

What other thing needs to be extracted?

Answer 25

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Question 26

How to extract periodicity?

Answer 26

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Question 27

What is short-term autocorrelation? What is the equation? What are the different components?

Answer 27

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Question 28

What is the windowing function? How does it look like? What are the properties?

Answer 28

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Question 29

What is the short-term correlation look like?

Answer 29

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Question 30

Where are the maximas on the short-term correlation function?

Answer 30

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Question 31

What happens when the delays are equal, when in between periods and when zero in the short term autocorrelation function?

Answer 31

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Question 32

What is the difference between a short term autocorrelation and a normal correlation function?

Answer 32

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Question 33

What is a problem with this short-term autocorrelation? How to solve?

Answer 33

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Question 34

What is triggered autocorrelation? How does it work?

Answer 34

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Question 35

What is the equation for triggered autocorrelation? How does it differ from when not triggered?

Answer 35

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Question 36

What kind of firing does the low frequency and high frequency channels have? Therefore on the graphs on the slide where are they?

Answer 36

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Question 37

37. What is an advantage of using the triggering procedure? | What is a SAI? What kind of images does it show for a vowel AE? What kind of images does it show for a consonant K?

Answer 37

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Question 38

What is an example of the triggered autocorrelation in machine hearing?

Answer 38

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Question 39

What is sound search? What is the process?

Answer 39

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Question 40

How do the SAI compare to the MFCCs for sound searching? Which one is working better?

Answer 40

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