Researchers Develop First Text-to-Speech System for Endangered Nüshu Language
Computer scientists have created NüshuVoice, the first text-to-speech system designed to synthesize the endangered Nüshu language, a phonetic script historically used by women in southern China. The system addresses the challenge of extremely limited audio recordings by using a pitch-aware AI model that leverages Nüshu's five-level pitch notation as a guide for natural speech synthesis. This work represents the first computational effort to reconstruct authentic Nüshu pronunciation and could help preserve the language's acoustic heritage.
Researchers have introduced NüshuVoice, a breakthrough text-to-speech system for Nüshu, an endangered phonetic script historically used by women in Jiangyong County, Hunan Province, China. The project addresses a significant gap in computational linguistics: while previous digital efforts focused on textual digitization and visual recognition, acoustic reconstruction of authentic Nüshu pronunciation remained unexplored. The team constructed a sentence-level dataset aligning standardized Unicode Nüshu text, phonetic transcriptions, Chinese translations, and archival recordings. To overcome the extreme scarcity of training data—mostly limited to isolated syllables rather than natural sentences—they developed NüshuPitchVITS, an AI framework that conditions speech synthesis on Nüshu's distinctive five-level pitch notation. Experimental evaluation demonstrates the system outperforms baseline approaches in spectral fidelity, pitch accuracy, and human-rated intelligibility. The researchers have publicly released both the dataset and code to support further research.
What different sources said
- arXiv cs.CLCenter
N\"ushuVoice: Reviving the Voice of Endangered N\"ushu with Pitch-Aware Text-to-Speech
Related
Gut Bacteria Enzyme Found to Break Down Heat-Processed Food Compounds, Producing Novel Biogenic Amines
Researchers have discovered that an enzyme in common gut bacteria can degrade N-epsilon-carboxymethyllysine (CML), a compound formed during thermal food processing, producing previously unknown biogenic amines. The enzyme, ornithine decarboxylase SpeC from enterobacteria, acts on CML and related modified lysine derivatives through a low-level 'underground' catalytic activity. This finding suggests a previously unrecognized communication axis between thermally processed dietary compounds and gut microbial physiology, with potential implications for host health.
Full-Length Gene Sequencing Reveals Two Distinct Bacterial Communities in Black-Legged Ticks Expanding Into Canada
Researchers used Oxford Nanopore full-length 16S rRNA gene sequencing to characterize the microbiome of Ixodes scapularis black-legged ticks collected in Nova Scotia, Canada, distinguishing between tick-adapted bacteria and environmentally acquired bacteria. The study comes as I. scapularis — the primary vector of Lyme disease — is rapidly expanding northward into Canada due to climate change. The findings suggest that environmentally derived bacteria in tick microbiomes are not mere contamination, which has implications for how tick microbiome data is collected and interpreted across surveillance studies.
Study Identifies Metabolic Link Between Cell Envelope Stress and Biofilm Formation in Bacteria
Researchers have discovered that the metabolite acetyl-CoA directly inhibits enzymes that degrade the bacterial signaling molecule c-di-GMP, connecting cell envelope biosynthesis stress to biofilm formation in Pseudomonas aeruginosa. The study found that sub-inhibitory concentrations of antibiotics targeting early peptidoglycan biosynthesis — but not other antibiotic classes — elevate c-di-GMP levels by reducing phosphodiesterase activity, with acetyl-CoA competing for the enzyme active site. Because the relevant enzyme domain is broadly conserved across bacterial species, this checkpoint mechanism may be widespread and could have implications for understanding antibiotic-induced biofilm responses.