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34 quick stories on the rack · #audio · TechWhy Decoding Audio Burns More CPU Than Encoding
Same bitrate, opposite jobs, yet decoding audio quietly burns more processor cycles than encoding. The reason …
Why Phone Speakers Distort Before Max Volume
Phone speakers crack up well before the volume slider tops out. The physics of tiny drivers, bad spec sheets, …
How Game Engines Handle Ambient Sound Loops
Game engines split ambient audio into loops and one-shots using deliberate mechanical rules. The logic behind …
Why Your Phone Adjusts Its Mic in a Moving Car
Your phone surgically separates your voice from road noise in real time. The mechanism is more clever than a v…
Why Your Phone Mic Sounds Different Face-Down
Flipping your phone face-down muffles some mics and turns the table into a conductor. The physics are stranger…
How Your Phone Mic Switches Pickup Patterns Automatically
Your phone runs multiple microphones and real-time beamforming to isolate sound, and understanding the mechani…
Why Wireless Earbuds Switch Primary Earbuds
One earbud dies first, then the other takes over. The cause is battery asymmetry and a deliberate radio handof…
Game Engines and the Logic Behind Layered Footstep Sounds
From terrain weight maps to secondary raycasts, game engines run a fast, intricate query every footfall, and w…
Why Speakerphone Calls Echo at High Volume
That echo on loud speakerphone calls is acoustic physics, not a bad signal. Understand the exact threshold whe…
Why Games Give Every Surface Its Own Footstep Sound
Game engines layer physics data, material tags, and audio buses so tile sounds nothing like mud, and the chara…
Why Game Engines Prioritize Player Sounds Over the World
Game engines run a strict audio triage every few milliseconds. Your footsteps always win, and the reasons are …
How AI Voice Assistants Detect Wake Words
Your smart speaker ignores TV voices but wakes for yours. The acoustic trick behind that is clever, imperfect,…