Engineered for Reflexive Listening

Discover the proprietary auditory tools, speech recognition models, and interactive workspaces that power Lalla.

WhisperX Forced Alignment

Precision Word-Level Karaoke

Most language apps only provide paragraph or rough sentence timestamps. Lalla leverages state-of-the-art CTranslate2 WhisperX speech recognition with language-specific phoneme models (Wav2Vec2) to resolve start and end timestamps down to the hundredth of a second for every individual word.

  • Millisecond glowing active word tracking
  • Interactive word timing chips clickable to seek audio
  • Confidence scoring to highlight difficult acoustic liaisons
"This is a download from BBC Learning English."
This: 0.00s - 0.32s is: 0.35s - 0.48s a: 0.50s - 0.58s BBC: 1.42s - 1.95s

Auditory Learning Objects

✦ Study Workspace Mode

Turns each transcript sentence into an isolated auditory learning object. Features a dedicated sentence audio controller (looping, speed cycling 0.75x–1.5x, 5s skips), floating contextual toolbar, and six pedagogical study panes:

Personal Sentence Notes
Vocabulary & Phonetics
Contextual Translation
AI Nuance Breakdown
Grammar Patterns
Jump & Play Saved Review
✦ STUDY WORKBENCH PANEL Interactive Mode
SELECTED PHRASE:
"have trouble with"
Grammar Pattern: have trouble + -ing / noun
Persistent across all sessions and saved directly to your personal study bank.

Tactile Drilling

3D Sentence Deck & Sandbox

Auditory drilling is most effective when paired with tactile reinforcement. Lalla offers two gamified modes:

3D Swipeable Card Deck

Anki-inspired cards where you swipe left to repeat or swipe right to master. Features Blind Mode to test your ears before revealing text.

Sentence Sandbox Quest

Duolingo-style winding 3D roadmap where you assemble scrambled word tiles while listening at normal or 0.75x Turtle speed.

Practice Deck · Card 04/28
"Food supply chains are facing unprecedented disruption."