3D spatial audio in Unity - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to add an AudioSource component to the GameObject.

Unity

AudioSource audioSource = gameObject.AddComponent<[1]>();

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AAudioSource

BAudioClip

CAudioListener

DAudioMixer

Attempts:

3 left

💡 Hint

Common Mistakes

Using AudioListener instead of AudioSource.

Trying to add AudioClip as a component.

Confusing AudioMixer with AudioSource.

The AddComponent<AudioSource>() method adds an AudioSource component to the GameObject, which is needed to play 3D spatial audio.

2fill in blank

medium

Complete the code to set the AudioSource to play a 3D sound.

Unity

audioSource.spatialBlend = [1]f;

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A0.0

B0.5

C1.0

D2.0

Attempts:

3 left

💡 Hint

Common Mistakes

Using 0.0f which makes the sound 2D.

Using values greater than 1.0f which are invalid.

Using 0.5f which is a mix but not fully 3D.

Setting spatialBlend to 1.0 makes the audio fully 3D, so it changes based on the listener's position.

3fill in blank

hard

Fix the error in setting the AudioSource's rolloff mode to logarithmic.

Unity

audioSource.rolloffMode = AudioRolloffMode.[1];

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ALinear

BLogarithmic

CConstant

DExponential

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'logarithmic' with wrong casing.

Using 'Exponential' which is not a valid option.

Using 'Constant' which does not change volume with distance.

The AudioRolloffMode.Logarithmic makes the sound volume decrease naturally with distance, which is best for 3D audio.

4fill in blank

hard

Fill both blanks to create a dictionary mapping audio clip names to AudioClip objects and filter clips longer than 3 seconds.

Unity

var longClips = clips.Where(clip => clip.length [2] 3).ToDictionary(clip => [1], clip => clip);

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Aclip.name

B>

C<

Dclip.length

Attempts:

3 left

💡 Hint

Common Mistakes

Using clip.length as key instead of clip.name.

Using '<' instead of '>' for filtering.

Using clip.name as value instead of key.

We use clip.name as the key and filter clips where clip.length > 3 seconds.

5fill in blank

hard

Fill all three blanks to create a dictionary comprehension that maps uppercase clip names to their lengths for clips shorter than 5 seconds.

Unity

var shortClipLengths = clips.Where([3] => [3].length < 5).ToDictionary([3] => [1], [3] => [2]);

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Aclip.name.ToUpper()

Bclip.length

Cclip

Dclip.name

Attempts:

3 left

💡 Hint

Common Mistakes

Using clip.name instead of clip.name.ToUpper() for keys.

Using wrong loop variable name.

Mixing up keys and values.

The dictionary keys are uppercase clip names (clip.name.ToUpper()), values are clip lengths (clip.length), and the loop variable is clip.