Title: Theory / Unimportant / CS / Descriptive / Material / Design / Sound
On every note of this deck, unless a note says otherwise:
Context: Material sound
Page: https://material.io/design/sound/applying-sound-to-ui.html#sound-use-cases

Question: Sounds interact with
Answer: other sounds from the app, e.g. multiple notification
Page: https://material.io/design/sound/applying-sound-to-ui.html#sound-use-cases
Context: Material sound
Answer2: Music playing

Question: Types of sound occur in a UI
Answer: Design
Page: https://material.io/design/sound/applying-sound-to-ui.html#sound-use-cases
Context: Material sound
Answer2: Music
Answer3: Voice

Question: Sound design can be used to:
Answer: Associate a UI element with a specific sound
Page: https://material.io/design/sound/applying-sound-to-ui.html#sound-use-cases
Context: Material sound
Answer2: Express emotion or personality
Answer3: Convey hierarchical structure, by associating interactions with certain sounds
Answer4: Provide sensory feedback

Question: Music in UI can be used to:
Answer: Emotionally resonant contexts
Page: https://material.io/design/sound/applying-sound-to-ui.html#sound-use-cases
Context: Material sound
Answer2: Advertising
Answer3: Providing moments of delight
Answer4: Telling a story

Question: Voice in UI can be used to:
Answer: Communicate complex information
Page: https://material.io/design/sound/applying-sound-to-ui.html#sound-use-cases
Context: Material sound
Answer2: Provide conversation and dialogue
Answer3: Enhance tone and personality

Name: A skeyomorphic sound
Definition: A real-world representation of a sound.
Page: https://material.io/design/sound/applying-sound-to-ui.html#sound-use-cases
Extra: https://kstatic.googleusercontent.com/files/61e7fe56772b55d54d337502b16bf388b1fd7674aed8f982485fe5ec017dc1c8bc28035f44c52f1c251ce937487a765c55ffc4467c094204b17cfe8d15c3e865

Name: An abstract sound
Definition: A sound that communicate an information and does not try to be realistic recording of a physical world event
Page: https://material.io/design/sound/applying-sound-to-ui.html#sound-use-cases
Extra: https://kstatic.googleusercontent.com/files/84c002c6c2babe9356835d0934e8a04f8fff7b93448531b4b135aded6008a10b53954f6829d8301ff3d97a68036ea8ac45df3fd5b5b96a9203e5b7824b02be6b

Name: Earcon
Definition: Audio cue to confirm an action/state change
Page: https://material.io/design/sound/applying-sound-to-ui.html#sound-use-cases
Etymology: Icon for ear

Name: Sound as decoration
Definition: Using a sound to represents a brand.
Page: https://material.io/design/sound/applying-sound-to-ui.html#sound-use-cases
Extra: https://kstatic.googleusercontent.com/files/fff37b1a70fb27147df4254ead0681293ee431d1caaec0065c69c35476ffe15b0fa31dd1d60b2b834ef90d95d61e9853cc164d0702f807423bdd818392c20f71

Question: Restriction to decorative sound
Answer: Limit it to avoid user fatigue
Page: https://material.io/design/sound/applying-sound-to-ui.html#sound-use-cases
Context: Material sound

Question: When to avoid all sounds:
Answer: UIs that require privacy or discretion
Page: https://material.io/design/sound/applying-sound-to-ui.html#sound-use-cases
Context: Material sound
Answer2: Users who have requested no interruptions
Answer3: Actions that are performed frequently

Name: Hero sound
Definition: A sound representing of a product and brand that highlight an important moment, evoke an emotional state, or express celebration.
Page: https://material.io/design/sound/applying-sound-to-ui.html#sound-use-cases
Example: Celebrate a significant positive action the user has taken
Example2: Welcome users to a new app or experience
Example3: Confirm a key moment of a product’s purpose

Question: Constraint on notification sound
Answer: It should be hear in noisy situation, far from the device, and also in headset, close to it
Page: https://material.io/design/sound/applying-sound-to-ui.html#sound-use-cases
Context: Material sound

Name: Primary UX sound
Definition: Sound generated by an OS or device to provide user feedback
Page: https://material.io/design/sound/applying-sound-to-ui.html#sound-use-cases
Example: keystroke sound on keyboard press

Name: Secondary UX sound
Definition: related to product's personality,
Page: https://material.io/design/sound/applying-sound-to-ui.html#sound-use-cases
Definition2: primarily used for functional purpose
Example: Refreshed content feed
Example2: Unavailable option
DefType: Sound

Name: Ambiant sound
Definition: a decorative layer of sound that expresses emotion while communicating a product’s personality or brand.
Page: https://material.io/design/sound/applying-sound-to-ui.html#sound-use-cases
Example: A start-up flow, to welcome the listener to the experience
Example2: An accompaniment to a home screen, to express an emotional tone and user’s location

Name: Timbre
Definition: Character of a sound
Page: https://material.io/design/sound/applying-sound-to-ui.html#sound-use-cases

Name: Frequency
Definition: how high-pitched or low-pitched a sound is
Page: https://material.io/design/sound/applying-sound-to-ui.html#sound-use-cases

Name: Bright sound
Definition: A sound with more high-frequency content
Page: https://material.io/design/sound/applying-sound-to-ui.html#sound-use-cases
Intuition: louder presence

Name: Muted sound
Definition: A sound with less high-frequency content
Page: https://material.io/design/sound/applying-sound-to-ui.html#sound-use-cases
Intuition: subtle and quieter, especially in noisy environments.

Instruction: Use bright sound
Effect: Show important message requiring explicit user attention
Context: Material sound

Instruction: Use muted sound
Effect: Feedback for usual user interaction
Context: Material sound

Name: Tonal sound
Definition: Sound more musical in nature, including melody, motif, and harmony
Page: https://material.io/design/sound/applying-sound-to-ui.html#sound-use-cases

Name: Atonal sound
Definition: Sound which resemble everyday sounds or noise – they don’t conform to traditional musical compositions
Page: https://material.io/design/sound/applying-sound-to-ui.html#sound-use-cases
Example: Tap
Name2: non-harmonic sound
Example2: camera shutter

Name: Melody
Definition: a tonal sound that has a short, rhythmic succession of singular pitches
Page: https://material.io/design/sound/applying-sound-to-ui.html#sound-use-cases

Question: Constraint on melodies in UI
Answer: They should be resolved, to avoid ambiguity
Page: https://material.io/design/sound/applying-sound-to-ui.html#sound-use-cases
Context: Material sound

Name: Motif
Definition: a melody that is repeated, making it a recognizable pattern
Page: https://material.io/design/sound/applying-sound-to-ui.html#sound-use-cases

Instruction: Uses a sound with upward motion
Effect: A sound indication that something opens or worked
Context: Material sound

Instruction: Uses a sound with downward motion
Effect: A sound indication that something closed or ended
Context: Material sound

Instruction: Uses a repetitive sound
Effect: A sound indicating that something is waiting, thinking or lack progress
Context: Material sound

Name: Sekeyomorphic sound
Definition: A sound representing a physical world action
Page: https://material.io/design/sound/applying-sound-to-ui.html#sound-use-cases
Example: camera shutter

Name: Sound dynamic
Definition: refer to changes in volume or loudness on either a micro scale (volume changes to a single sound) or a macro scale (volume changes to a set of sounds)
Page: https://material.io/design/sound/applying-sound-to-ui.html#sound-use-cases

Name: Sound's envelope
Definition: changes in a sound’s amplitude over time
Page: https://material.io/design/sound/applying-sound-to-ui.html#sound-use-cases
Example: rise/attack
Example2: fall/decay

Instruction: Sound starting with a soft attack
Effect: Sounds that should mix in ambiant sound
Context: Material sound

Instruction: Sound starting with a sharp attack
Effect: Sounds showing energy
Context: Material sound

Name: Decay
Definition: refers to the amount and speed at which a sound’s amplitude decreases after its attack (until its amplitude is zero)
Page: https://material.io/design/sound/applying-sound-to-ui.html#sound-use-cases

Instruction: Sound with long decay
Effect: A sound representing slowness
Context: Material sound

Instruction: Sound with short decay
Effect: A sound representing being fast
Context: Material sound

Name: A wet sound
Definition: A sound with reverb and delay
Page: https://material.io/design/sound/applying-sound-to-ui.html#sound-use-cases

Name: Reverb
Definition: an effect applied to sound that gives it more presence
Page: https://material.io/design/sound/applying-sound-to-ui.html#sound-use-cases
Intuition: effect of hearing a sound in a real-world environment.

Name: Delay
Definition: A sound blended with its echo
Page: https://material.io/design/sound/applying-sound-to-ui.html#sound-use-cases
Intuition: decorative effect.

Name: Sound choregraphy
Definition: The interaction between all sounds in the application and sounds playing by the device
Page: https://material.io/design/sound/sound-choreography.html#hierarchy

Name: Sound priority
Definition: Brand sounds
Page: https://material.io/design/sound/sound-choreography.html#hierarchy
Definition2: Hero sounds
Conjdef: In this order
Definition3: Alerts and notifications
Definition4: Primarx UX sounds
Definition5: Secondary UX sounds
DefType: Represents the importance of a sound

Question: What's the relation between turning on and turning off sounds
Answer: They should use the same tone in the reverse order to represents cancellation
Page: https://material.io/design/sound/sound-choreography.html#hierarchy
Context: Material sound

Question: What's the relation between the same sound repeated multiple time. E.g. flushing various elements of a list
Answer: They should have very little variation, reflecting real world changes when the same thing occurs at different distances/in rooms more or less filled
Page: https://material.io/design/sound/sound-choreography.html#hierarchy
Context: Material sound

Name: Mixing
Definition: Sound’s volume,
Page: https://material.io/design/sound/sound-choreography.html#hierarchy
Definition2: frequency,
Definition3: spatial positioning,
Extra: and more
Denoted by: to create a rich, cohesive sound adjusting all of
DefType: the art of combining different sound sources into one audio stream

Name: Sound priority
Definition: The way to choose which sounds to give importance to if system wants to play multiple sounds
Page: https://material.io/design/sound/sound-choreography.html#hierarchy
Example: music and ring

Name: Equalization
Definition: an effect that enhances or reduces specific frequencies.
Page: https://material.io/design/sound/sound-choreography.html#hierarchy
Abbreviation: Eq

Question: How to measure loudness
Answer: Use «perceived loudness» instead of peak meter level
Page: https://material.io/design/sound/sound-choreography.html#hierarchy
Context: Material sound

Question: How should volume control act on the volume
Answer: Logarithmitically, since that's how users perceive sound
Page: https://material.io/design/sound/sound-choreography.html#hierarchy
Context: Material sound

Question: How should you prepare sound file
Answer: Compress lossily until artifact can be heard
Page: https://material.io/design/sound/sound-choreography.html#hierarchy
Context: Material sound
Answer2: Lower bit-depth and sample rate until artifcats can be heard
Answer3: Trim any uneccesary silence