FA-Bench: A Benchmark for Phone- and Word-Level Timestamp Accuracy in Forced Alignment and ASR on Clean and Noisy Speech

arXiv:2609.32396 · cs.CL, cs.PF · Submitted 2026-09-26 · Read on arXiv

cs.CL, cs.PF

Submitted: 2026-09-26

Updated: 2026-10-08

Code: https://github.com/olewave/fa-bench

Terminology

• Alignment — 24× in this paper · explained in 1 episode
• Accuracy — 6× in this paper · explained in 1 episode
• Benchmark — 5× in this paper · explained in 2 episodes
• Systematic Bias — 3× in this paper · explained in 3 episodes
• Robustness — 2× in this paper · explained in 5 episodes
• Attention Mechanism — 1× in this paper · explained in 3 episodes
• Core — 1× in this paper · explained in 2 episodes
• Data Augmentation — 1× in this paper · explained in 7 episodes
• Decode — 1× in this paper · explained in 2 episodes
• Self-Supervised Learning — 1× in this paper · explained in 8 episodes

Sources

• BFA: Real-time Multilingual Text-to-speech Forced Alignment
• Fully Differentiable Neural Forced Alignment via Soft Dynamic Programming
• Anatomy of Industrial Scale Multilingual ASR
• Qwen3-ASR Technical Report
• Montreal Forced Aligner and the state of speech-to-text alignment in 2026
• MUSAN: A Music, Speech, and Noise Corpus
• Seamless: Multilingual Expressive and Streaming Speech Translation

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