RYUN Engineering & Research
Blog & Engineering Notes
Things we built, measured, or got wrong. Written by the developer, dated, and updated in place when code or benchmarks change.
Articles (2)
#language-learning·8 min
Subconscious Subvocalization in Second-Language Reading: Why Text-Only Study Blocks Listening Speed
Reading foreign text without synchronized audio forces the brain into internal subvocalization capped at 80-110 words per minute, causing auditory buffer overflows during 180 wpm native speech. Here is how synchronized text illumination recalibrates speech perception.
Oct 17, 2026Read
·8 min
The Sub-Second Subtitle Desync Trap: Why Language Learners Get Exhausted Watching Foreign Cinema
Human auditory perception and phoneme mapping fracture when captions drift by as little as 200 milliseconds. Here is why broadcast TV subtitle standards create cognitive fatigue, how frame rate mismatches cause drift, and how sub-second alignment unlocks true comprehensible input.
Oct 12, 2026Read