Arcade LabXP 0

World 2 / Quest 08

Sound Boss

Build a Sound Lab. Make every sound out of math. Wire them into your game.

About 60 minutes+150 XP

You’ll build: A Sound Lab page with five sound effects your computer synthesizes, tuned by you, and all five wired into your game.

You’ll learn

Briefing

You build a Sound Lab, tune five sound effects your computer makes out of math, and wire them into your game at the right moments. No new Power-Up: this is the Full Picture, aimed at your ears.

Start prompt

Say this to Coach

/arcade-lab Start Quest 8: Sound Boss. Build me a Sound Lab page in my studio folder from the template, and open the coach notes.

Steps

  1. 1

    Open the Sound Lab

    Coach makes a page called sound-lab.html with five buttons. Open it through your Studio Server link (add /sound-lab.html to the end). Click every button. Some will sound great. Some will sound like a broken robot. That's the starting point.

    Say this to Coach

    Make the Sound Lab page from the template in my studio folder. Give me the link to open it through the Studio Server. Then explain in kid words what 'pitch' and 'length' mean for a sound.

  2. 2

    Tune the jump

    A jump sound usually goes up — low to high, fast. Play it. Then ask for an exact change: higher, longer, more of a boing. Full Picture works here too: what it sounds like now, what you want, how you'll know.

    Say this to Coach

    The jump sound right now sounds flat and a bit boring. Make it start lower and slide up higher, and make it a little shorter. I'll click it and tell you.

  3. 3

    Tune the coin and the hit

    A coin is two quick high notes (ding-DING). A hit is short, low, and rough. Tune each one — one at a time — until it makes you nod. Ask Coach what "wave shape" means and try changing it: square sounds like old Nintendo, triangle is softer, sawtooth is buzzy.

    Say this to Coach

    Change the coin sound to two quick notes where the second is higher. Then change the hit sound's wave shape to 'square' and make it shorter and lower. One at a time — coin first.

  4. 4

    The explosion

    Explosions aren't notes — they're noise that fades out. Ask Coach to make the explosion out of noise instead of a tone, and to make it fade. Then make it BIG.

    Say this to Coach

    Make the explosion out of random noise instead of a note, starting loud and fading out over half a second. Then give it a low rumble underneath.

  5. 5

    Wire sounds to moments

    Now the real job. Tell Coach exactly when each sound plays in your game. Be specific — the moment matters more than the sound. Do them one at a time and test each.

    Say this to Coach

    Wire the sounds into my game, one at a time. First: play the coin sound the exact moment the player touches a pickup. I'll test. Then the hit sound when the player touches an obstacle. Then the explosion on game over.

  6. 6

    The sound boss's check

    Play your game with your eyes closed for 30 seconds. Can you tell what's happening just from the sounds? If two sounds are too similar, that's the next fix. Then checkpoint 'sound-done'.

    Say this to Coach

    I played with my eyes closed. The sounds that were confusing were the coin and the power-up — they sound almost the same. Make them more different from each other. Then save a checkpoint called 'sound-done'.

Side quests +10 XP each

0 of 3 done

Stuck?

More ways to get unstuck

Ship checklist

0 of 4 done

Bonus round

Show Dad

Show Dad the Sound Lab, then play your game with the volume up. Dad's question: "Where do these sounds come from — are they files?" Explain it in your own words.