Twenty Thousand Hertz Harry Potter and the Sound Designer’s Stone
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Mar 9, 2026 Lawrence Kendrick, a sound designer who crafted creature voices and ambiences, and Will Cohen, a field-recording specialist and designer, reveal how 130 hours of audio were built. They discuss recording real trains and halls, designing organic spell and creature textures, assigning distinct sounds to doors and houses, and turning everyday objects into magical effects.
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Audiobooks As Movies For Your Ears
- The full-cast Harry Potter audiobooks function as "movies for your ears" by combining narration, score, and extensive sound design mixed in Dolby Atmos.
- String and Tins created 130 hours of layered effects so every movement and location feels canonically placed and emotionally distinct.
Lead Sound Before The Line
- Lead the narration: start a sound briefly before the narrator mentions it so events feel natural and immersive.
- Avoid formulaic Foley that announces actions after they're described; this preserves the listener's suspension of disbelief.
Backyard Bricks Became A Magical Passageway
- Will Cohen recorded long, improvised jiggling of bricks in his backyard to match Hagrid making a hole appear in a wall.
- He used real renovation offcuts because no library sound lasted long enough for the narrated page-long description.
