Audio Flashcards
What is an Audio Source?
The Audio Source plays back an Audio Clip in the scene
Where/How can an Audio Clip be played?
The Audio Clip can be played to an Audio Listener Or Through an Audio Mixer.
What can an Audio Source play?
An Audio Source can play any type of Audio Clip and be configured to play these as:
2D, 3D or as a mixture (Spacial Blend)
How is the Audio Spread out?
The Audio can be spread out between speakers (Stereo to 7.1) and morphed between 2D and 3D (Spacial Blend)
How can Audio be controlled?
Audio can be controlled over distance with falloff curves
Audio Listener and reverbs
The Audio Listener is within one or multiple Reverb Zones. Reverberations are applied to the source.
Audio Filters
Individual filters can be applied to each Audio Source for an even richer Audio experience.
Types of Audio Clips and effects
Audio Properties
Control Audio
Enable Audio
Manage Audio
Audio Effects
Audio Effects can be applied to the Audio Mixer to modify the Mixers output. The Effects are applied using/adding effect components.
Effect Components
The order of the components reflects the order the effects will be applied to the Audio Source.
Applyin audio effects to the audio mixer modifies its output
What does a reverb zone do
Reverb Zones take an Audio Clip and distorts it depending on where the audio listener is located in the reverb zone
Min-Distance…
Min represents the radius of the inner circle in the gizmo. This determines the zone where there is a gradual reverb effect and a full reverb zone.
Max-Distance
Max represents the radius of the outer circle in the gizmo. This determines the zone where there is no effect and where the reverb starts to get applied gradually.
Reverb preset
Reverb presets determine the reverb effect that will be used in the reverb zone.
Reverb Zones
No reverb, Gradient reverb(max to min) , Full reverb(min)
You can mix Reverb Zones to create combined effects.
What is the Doppler effect
The Doppler effect occurs when there is an Audio source that is moving towards (or moving away from) us in real life.
Everything that produces sound creates sound waves, which takes time in order to reach us.
If an object is moving towards you the sound waves are going to be more compressed, which results in a higher pitch sound.
When that object passes you, the pitch goes down as the sound waves are more stretched out.
Audio Compression Formats enum
An enum containing different compression types
This enum is used within the Audio Importer to define what type of compression will be used for an imported Audio Clip
AudioCompressionFormat Properties PCM, Uncompressed Compressed ADPCM VORBIS MP3 XMA. Xbox sound format GCADPCM. Nintendo audio format
PCM, Uncompressed pulse code modulation
Vorbis, Vorbis compression format
ADPCM, Adaptive differential pulse code modulation
MP3, MPEG Audio Layer 3
VAG, Sony property hardware format
HEVAG, Sony proprietary hardware codec
XMA, Xbox One proprietary hardware format
AAC, AAC audio compression
GCADPCM, Nintendo ADPCM audio compression format
ATRAC9, Sony proprietary hardware format
Audio Mixer
A Singleton
Audio Mixer asset
This is a Singleton representing a specific audio mixer asset in the project
Audio Properties
Output AudioMixerGroup, Routing target.
UpdateMode, How time should progress for this Audio Mixer. Used during Snapshot transitions.
Standard audio compression formats
Audio Codec examples
PCM is the only lossless compression format. The rest are Lossy compression formats
Pcm. Pulse Code Modulation. Lossless, Uncompressed. Best for audio.
AdPcm. Adaptive Differential Pulse Code Modulation. 3.5x smaller Than PCM.
Vorbis. Compressed, small file size, reduced quality
Mp3 is also available for mobile. Compressed, small file size, reduced quality.
AAC. IOS format
Sony Proprietary format
Lossy Compression Format
VAG HEVAG ATRAC9 XMA(XBOX) GCADPCM(NINTENDO)
For best sound quality in unity
Uncompressed format such as WAV or AIFF, containing PCM and let unity do the encoding
MAS or PC platforms
Ogg Vorbis. Vorbis comes with a slider which allows you to choose the quality, and size of your audio. The lower quality the lower size
