Audio

In short

There are no audio files. AudioSynth is a small DSP kit; SoundBank and BallparkOrgan build every clip once at boot. GameAudio listens to GameEvents and plays them, so gameplay code never calls audio. Outside the menu organ, every sound is a reaction to something on the field; the cutscenes and the live hit counter call GameAudio’s static one-liners directly.

How it works

1. GameRoot adds GameAudio to [Game]. Its Awake builds a SoundBank, the organ loop, the “Charge!” fanfare and five clips of its own (intro impact, firework bang, sad trombone, counter tick, riser), and makes four AudioSources: music (loops, ignores listener pause), ball (the pitch whir), sfx (one-shots) and counter (the hit counter’s ticks, on their own source so changing their pitch never bends a cheer).
2. The music source plays all the time at volume 0 and fades: on in menus, off in AtBat, CoopWatch, Intro and Outro.
3. Each GameEvents event maps to sounds (table below).
4. UI code calls static one-liners: GameAudio.Click, Coin, Shuffle, Buzz, LevelUp, Cheer, Groan, YourTurn. The cutscenes and the hit show have their own (table below).
5. Pausing sets AudioListener.pause (GameAudio.SetPaused): the field goes silent, the organ keeps playing.

Event to sound

Event	Sound
StateChanged	Organ fades in (menus) or out (at bat, spectating); the ball whir stops.
PitchThrown	Special-ball cue at the windup (pitch per effect; on a boss pitch the boss’s ball, PitchData.Primary), then the whir from release to the plate at the pitch’s speed, then a glove pop if nobody hit it.
SwingStarted	Whoosh.
SwingResolved	Contact: a crack by exit velocity (green crack on a green), a ping on solid contact, a small cheer on a green that grows with the streak. Whiff: an “ooh”.
HitLanded	Home run: homer bell, a big or huge cheer, then “Charge!“. Foul: soft ooh. In play: groan.
CountChanged	Wood block on an out (plus a groan on a strikeout); a lighter, higher wood block on a strike.
RoundFinished	Cleared: cheer and “Charge!“. Failed: groan (not for a co-op turn).
RunEnded	Huge cheer on a win; a chime on a new best.
ScoreboardHit	Smash: crunch, boom and tinkling glass (Scoreboard).

Direct calls (no event)

Call	Sound	Called by
CrowdSwell	Small cheer at 0.55	Match intro opening (Cutscenes)
Whoosh	The whoosh at pitch 1.15	Every slash wipe in the intro and outros
Impact	Low thump plus a dark noise burst	A name slamming in (intro), outro titles; also under StackHit and CounterSlam
Fanfare	Huge cheer, then “Charge!” 0.3 s later	MAP BEATEN
FireworkBang	Falling 90 to 28 Hz boom plus 26 crackle pops	Each firework burst (Fireworks)
SadTrombone	D4, C#4, C4, then a long wobbling B3	GAME OVER
CounterTick(feet)	A 30 ms blip that climbs a major scale, a step every 35 ft (pitch capped at 3), louder per heat tier	HitCounter, every 10 ft (Hit Show)
CounterDing(tier)	Chime, a little higher per tier	Distance milestones
Gone	Half-second riser plus a small cheer	The ball clearing the wall
StackHit(step)	Coin, pitch 1 + 0.14 per step, plus a soft impact	Each multiplier joining the home-run score
CounterSlam	Impact plus six quick coins	The total landing in the score panel
CounterStamp	Wood block	OUT / FOUL stamp

The clips

SoundBank builds: CrackSoft, CrackMedium, CrackHard, CrackGreen, Ping, HomerBell, PitchWhir, Whoosh, GlovePop, WoodBlock, Tick, Coin, Shuffle, Buzz, Chime, SpecialBall, CheerSmall, CheerBig, CheerHuge, Groan, Ooh, Smash. Crowd sounds are layered voices, not noise. There is no umpire voice: a wood block marks strikes and outs and the HUD shows the call.

GameAudio builds its own five clips in code with AudioSynth: IntroImpact, FireworkBang, SadTrombone, CountTick, Riser.

BallparkOrgan plays the public-domain “Take Me Out to the Ball Game” chorus as a 3/4 waltz from note tables, and builds the “Charge!” fanfare. The melody was transcribed from memory: a wrong note is a one-line fix in its table.

AudioSynth gives oscillators (Tone, Organ, Brass, Sweep, Voices, Noise), filters (LowPass, LowPassSweep, HighPass), envelopes (Envelope, ExpDecay), mixing (Mix, MixInto, Gain, Wobble, MakeLoop, Normalize, Clamp), NoteHz("C5") and ToClip.

Numbers

What	Value	Where to tune
Sample rate	44,100 Hz, mono	AudioSynth.Rate
Organ tempo	116 BPM, 3 beats per bar	BallparkOrgan.Bpm
Music fade	0.7 s	GameAudio.MusicFadeSeconds
Organ loudness at slider 1	0.5	GameAudio.MusicBase
Whir loudness at slider 1	0.55	GameAudio.WhirBase
Whir pitch	speedMph / 85, clamped 0.7 to 1.6	ReferencePitchMph
Solid contact (ping)	quality >= 0.55	SolidContactQuality
Crack choice	green: CrackGreen; < 78 mph soft; < 96 mph medium; else hard	SoundBank.CrackFor
Huge cheer	home run of 450 ft or more	GameAudio.OnHitLanded
”Charge!” delay after the bell	0.6 s	ChargeDelay
Special-ball cue pitch	$$$ 1.25, Super Fast 1.1, Anti-Gravity 0.9, Ghost 0.75, Sticky 0.6, Wiffle 1.4, Headwind 0.8, Tailwind 1.2	SpecialBallPitch
Counter tick scale step	35 ft per scale degree, base pitch 0.55, max 3	GameAudio.CounterTick
Default volumes	music 0.6, sound 1	GameSettings

In the code

File	What it does
Scripts/Audio/GameAudio.cs	Sources, event handlers, UI, cutscene and counter one-liners, its own five clips, SetPaused.
Scripts/Audio/SoundBank.cs	Builds and holds every effect clip; CrackFor.
Scripts/Audio/AudioSynth.cs	The DSP kit.
Scripts/Audio/BallparkOrgan.cs	BuildLoop, BuildCharge.

Gotchas

README drift

The README’s tuning list says to assign a real clip to GreenFeedback.GreenClip. That field no longer exists: GreenFeedback only shakes the camera, and the green sound is CrackGreen plus the small cheer in GameAudio.

• The whir and glove pop wait on game time (WaitForSeconds), so they follow the ball through hit stop and slow motion. Delayed one-shots use real time.
• Volumes are read from GameRoot.Instance.Save.settings on every play, so the MUSIC and SOUND sliders apply live.
• All clips are built in Awake, which adds a little to boot time.
• The counter source keeps the last pitch it was given; every call through PlayCounter sets it first.

Related

• Game Events: the events behind every sound
• Add a Sound: making and hooking a new sound
• GREEN Swings: the green feedback
• Save System: where the volume settings live
• Cutscenes and Hit Show: the direct-call sounds