Four Signal Processing Themes

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Question 1 of 5

1. Question
Which of the following are equalization problems? Select all that apply.
- Separating low-frequency signals from high-frequency noise.
- Correcting an out-of-focus photo
- Eliminating the distortion in an audio recording caused by a low quality amplifier
- Determining whether a transmitted signal represents a “1” or a “0”
- Smoothing a signal to remove noise
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Question 2 of 5

2. Question
Which of the following are identification problems? Select all that apply.
- Determining a mathematical model for the vocal tract from recordings of speech
- Separating acoustic signals in the ocean using their direction of arrival
- Building a network model that describes the relationships between a known stimulus and measured brain signals
- Determining whether an airplane is present or absent from a radar signal
- Determining where a sound-emitting object is located
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Question 3 of 5

3. Question
Which of the following are filtering problems? Select all that apply.
- Separating the signals broadcast by radio stations on different channels
- Correcting an out-of-focus photo
- Building a model for the effect of the external ear on acoustic signals from different directions
- Separating signals due to different users at a cellular base station
- Deciding whether a ship is present in an aerial photograph of a port
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Question 4 of 5

4. Question
An algorithm that searches for the presence of a face in a photo is performing detection.
- True
- False
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Question 5 of 5

5. Question
An algorithm that determines the color of someone’s eyes in a portrait is performing estimation.
- True
- False
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Four Signal Processing Themes

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