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Changhe Song

6 accepted papers

2025

Binary Representation Learning for Discriminative Acoustic Unit Discovery

ICASSP 2025accepted

Acoustic Unit Discovery (AUD) aims to obtain phoneme-like units that preserve linguistically significant information while removing paralinguistic details. Although Contrastive Predictive Coding (CPC) has emerged as a leading self-supervised representation learning method for this task, CPC-based me…

Cited by 0Source ↗Scholar ↗
2025

Towards Dynamic Theory of Mind: Evaluating LLM Adaptation to Temporal Evolution of Human States

ACL 2025long

As Large Language Models (LLMs) increasingly participate in human-AI interactions, evaluating their Theory of Mind (ToM) capabilities - particularly their ability to track dynamic mental states - becomes crucial. While existing benchmarks assess basic ToM abilities, they predominantly focus on stati…

2022

A Character-Level Span-Based Model for Mandarin Prosodic Structure Prediction

ICASSP 2022accepted

The accuracy of prosodic structure prediction is crucial to the naturalness of synthesized speech in Mandarin text-to-speech system, but now is limited by widely-used sequence-to-sequence framework and error accumulation from previous word segmentation results. In this paper, we propose a span-based…

Cited by 0Source ↗Scholar ↗
2022

An End-to-End Chinese Text Normalization Model Based on Rule-Guided Flat-Lattice Transformer

ICASSP 2022accepted

Text normalization, defined as a procedure transforming nonstandard words to spoken-form words, is crucial to the intelligibility of synthesized speech in text-to-speech system. Rule-based methods without considering context can not eliminate ambiguation, whereas sequence-to-sequence neural network…

Cited by 7Source ↗Scholar ↗
2022

Disentangling Content and Fine-Grained Prosody Information Via Hybrid ASR Bottleneck Features for Voice Conversion

ICASSP 2022accepted

Non-parallel data voice conversion (VC) have achieved considerable breakthroughs recently through introducing bottleneck features (BNFs) extracted by the automatic speech recognition(ASR) model. However, selection of BNFs have a significant impact on VC result. For example, when extracting BNFs from…

Cited by 0Source ↗Scholar ↗
2021

Syntactic Representation Learning For Neural Network Based TTS with Syntactic Parse Tree Traversal

ICASSP 2021accepted

Syntactic structure of a sentence text is correlated with the prosodic structure of the speech that is crucial for improving the prosody and naturalness of a text-to-speech (TTS) system. Nowadays TTS systems usually try to incorporate syntactic structure information with manually designed features b…

Cited by 0Source ↗Scholar ↗