ai-agent/reel/sfx

Sound effects

Every sound effect comes from 効果音ラボ, the library the Lost in Production trailer used. It is free for commercial use with no credit required, but its terms forbid redistributing the files themselves. So public/sfx/*.mp3 is gitignored and fetched on demand.

npm run sfx                     # → public/sfx/<name>.mp3 (idempotent; refetches a name whose pick changed)
bash sfx/fetch-sfx.sh --force   # refetch everything · bash sfx/fetch-sfx.sh tap click → only those
node sfx/measure.mjs --write    # after changing a pick: re-measure duration/onset/peak into sources.json

The site serves an mp3 only to a browser User-Agent with a Referer from its own category page. The script sends both, and it fails loudly if the site answers with anything other than an mp3. Entries with a clip are cut out of a longer recording with ffmpeg (the system ffmpeg, else Remotion's bundled one). Every other file is the site's original, byte for byte.

• sources.json maps each semantic name to a file and its measured duration, onset, peakDb, peakAt and audible. scripts/mix.mjs subtracts onset (the first sample above −40 dBFS) so the transient lands exactly on the cue time. For swells (whoosh, swoosh, register's bell), peakAt is where the loud part is. audible is how long the sound really rings, which is useful for dur.
• catalog.json lists every mp3 on the site (2,352: 1,375 effects and 977 voice lines). Each entry has its path, Japanese title and description, an English gloss and the page it is listed on. Grep it to pick new sounds. The site's "life" category is various (生活).

Names

name	use	file (効果音ラボ title)
tap · tap2	soft touchscreen tap, alternate the two	button/cursor12 コッ · anime/pa1 パッ
click	crisp selection click	button/decision31 カチッ
type · type2	one keystroke each (typeCues alternates them)	machine/keyboard1 · one stroke cut from machine/keyboard-high-speed2, leveled to type
send	message sent ✓, a rising chime	button/decision53 ピロリン
pop · pop2	cards popping in	button/decision35 ポピッ · button/decision34 ポン
notif	phone notification	button/decision40 ピロン
vibrate	phone buzz (0.9 s)	first buzz of machine/mobile-phone-vibration2
whoosh · whoosh2	fast transition, light · heavy	battle/katana-gesture2 · battle/punch-real-swing3
swoosh	softer, longer slide	battle/katana-gesture1
impact · impact2	title slam: boom (3.5 s tail; use dur) · text slam	anime/don-1 ドーン · anime/text-impact1
sparkle	reveal shimmer	button/decision37 キラリーン
register	ka-ching (the bell rings at ~0.36 s)	anime/amount-display1
printer	receipt print burst (0.75 s)	one pass of machine/printer-print1
stamp	stamp thump	battle/arrow-pierce1 ドスッ, tail cut
tick	one clock tick	one tick of various/clock-hand2
bell	the mascot's handbell (≈ 6 dB quieter than the rest)	various/bell1 鈴が鳴る
alarm	a scheduled job fires	first beep burst of machine/alerm1
toggle	switch flip	various/electricity-switch1
data · data2	network-packet blips	button/cursor5 · button/cursor3
success	checkmark ding	button/decision13 ピン
tear	paper rip	various/paper-tear2
countup	rolling numbers (ticks rising in pitch)	button/gauge-recovery3
shutter	camera shutter	machine/camera-shutter2

The why field of each entry in sources.json says what the measurements showed and what the pick beat.