Why Simulink streamlines DSP prototyping - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a DSP model block in Simulink.

Simulink

model = [1]('dsp_model');

Drag options to blanks, or click blank then click option'

Asimulink

Bnew_system

Cadd_block

Dopen_system

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'simulink' which opens the Simulink environment but does not create a model.

Using 'open_system' which opens an existing model.

Using 'add_block' which adds blocks to a model but does not create one.

The new_system function creates a new Simulink model which is the first step in DSP prototyping.

2fill in blank

medium

Complete the code to add a DSP block to the model.

Simulink

add_block('dsp_lib/Filters/[1]', 'dsp_model/Filter');

Drag options to blanks, or click blank then click option'

AScope

BGain

CLowpass Filter

DFFT

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing 'Gain' which amplifies signals but is not a filter.

Choosing 'FFT' which performs frequency analysis but is not a filter.

Choosing 'Scope' which is for visualization.

The 'Lowpass Filter' block is a common DSP block used for filtering signals in Simulink.

3fill in blank

hard

Fix the error in the code to connect blocks in the model.

Simulink

add_line('dsp_model', 'Input/1', [1]);

Drag options to blanks, or click blank then click option'

A'Filter/1'

B'Gain/1'

C'Output/1'

D'Scope/1'

Attempts:

3 left

💡 Hint

Common Mistakes

Connecting input directly to output or scope blocks.

Connecting input to gain block which is not added here.

The line connects the 'Input' block output to the 'Filter' block input, which is the correct connection for DSP prototyping.

4fill in blank

hard

Fill both blanks to set simulation parameters for DSP prototyping.

Simulink

set_param('dsp_model', 'StopTime', [1], 'Solver', [2]);

Drag options to blanks, or click blank then click option'

A'10'

B'0.1'

C'FixedStepDiscrete'

D'VariableStepAuto'

Attempts:

3 left

💡 Hint

Common Mistakes

Using variable step solver which is less common for DSP prototyping.

Setting stop time too small or as a decimal string.

Setting 'StopTime' to '10' seconds and using 'FixedStepDiscrete' solver is typical for DSP simulations to ensure fixed-step discrete processing.

5fill in blank

hard

Fill all three blanks to create a dictionary of DSP block parameters.

Simulink

params = [1]: [2] for [3] in blocks if blocks[[3]] > 0

Drag options to blanks, or click blank then click option'

Ablock

Bblocks[block]

Dblocks

Attempts:

3 left

💡 Hint

Common Mistakes

Using the dictionary name as key or value instead of the variable.

Not filtering blocks correctly.

This dictionary comprehension creates a dictionary with block names as keys and their parameter values as values, filtering only blocks with positive values.