This article details a hands‑on exploration of gamified product design, covering how to create 3D models in Cinema 4D, export animation parameters from After Effects, compress sequence‑frame assets, and integrate UI and audio into a Cocos Creator‑based pet‑raising game aimed at boosting user retention and traffic.
This article explores the acoustic foundations of audio compression, detailing how human perception models enable non‑uniform quantization in G711 (PCMA/PCMU) and how MPEG‑1 layer‑III (MP3) leverages frequency‑domain subband analysis, masking effects, and psychoacoustic thresholds to achieve high compression ratios without sacrificing perceived audio quality.
The SBC (Subband Codec) used in Bluetooth headsets compresses PCM audio by splitting the signal into 4 or 8 sub‑bands, allocating bits according to perceptual importance, and encoding with analysis filters, scale factors, APCM and bit‑packing, then decoding reverses the process to reconstruct audio, providing lossy compression across supported sample rates and channel modes.
The article explores the history and principle of the Fourier Transform, illustrating how this mathematical prism decomposes complex waveforms into simple sine components and underpins technologies such as audio compression, image JPEG, speech recognition, scientific imaging, and even space research.
