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Code-switching (CS) refers to the switching of languages within a speech signal and results in language confusion for automatic speech recognition (ASR). To address language confusion, we propose a language alignment loss (LAL) that aligns…

Audio and Speech Processing · Electrical Eng. & Systems 2025-11-04 Hexin Liu , Xiangyu Zhang , Haoyang Zhang , Leibny Paola Garcia , Andy W. H. Khong , Eng Siong Chng , Shinji Watanabe

The lack of code-switch training data is one of the major concerns in the development of end-to-end code-switching automatic speech recognition (ASR) models. In this work, we propose a method to train an improved end-to-end code-switching…

Computation and Language · Computer Science 2021-01-14 Yerbolat Khassanov , Haihua Xu , Van Tung Pham , Zhiping Zeng , Eng Siong Chng , Chongjia Ni , Bin Ma

Code-switching (CS) is common in daily conversations where more than one language is used within a sentence. The difficulties of CS speech recognition lie in alternating languages and the lack of transcribed data. Therefore, this paper uses…

Computation and Language · Computer Science 2021-10-08 Liang-Hsuan Tseng , Yu-Kuan Fu , Heng-Jui Chang , Hung-yi Lee

Automatic speech recognition (ASR) for conversational code-switching speech remains challenging due to the scarcity of realistic, high-quality labeled speech data. This paper explores multilingual text-to-speech (TTS) models as an effective…

Audio and Speech Processing · Electrical Eng. & Systems 2026-01-06 Yue Heng Yeo , Yuchen Hu , Shreyas Gopal , Yizhou Peng , Hexin Liu , Eng Siong Chng

In this paper, we describe several techniques for improving the acoustic and language model of an automatic speech recognition (ASR) system operating on code-switching (CS) speech. We focus on the recognition of Frisian-Dutch radio…

Computation and Language · Computer Science 2018-07-31 Emre Yılmaz , Henk van den Heuvel , David A. van Leeuwen

The prevalence of the powerful multilingual models, such as Whisper, has significantly advanced the researches on speech recognition. However, these models often struggle with handling the code-switching setting, which is essential in…

Audio and Speech Processing · Electrical Eng. & Systems 2024-01-15 Bobbi Aditya , Mahdin Rohmatillah , Liang-Hsuan Tai , Jen-Tzung Chien

Training a conventional automatic speech recognition (ASR) system to support multiple languages is challenging because the sub-word unit, lexicon and word inventories are typically language specific. In contrast, sequence-to-sequence models…

Audio and Speech Processing · Electrical Eng. & Systems 2018-02-16 Shubham Toshniwal , Tara N. Sainath , Ron J. Weiss , Bo Li , Pedro Moreno , Eugene Weinstein , Kanishka Rao

Code-switching in automatic speech recognition (ASR) is an important challenge due to globalization. Recent research in multilingual ASR shows potential improvement over monolingual systems. We study key issues related to multilingual…

Computation and Language · Computer Science 2021-07-06 Ahmed Ali , Shammur Chowdhury , Amir Hussein , Yasser Hifny

Languages usually switch within a multilingual speech signal, especially in a bilingual society. This phenomenon is referred to as code-switching (CS), making automatic speech recognition (ASR) challenging under a multilingual scenario. We…

Audio and Speech Processing · Electrical Eng. & Systems 2023-10-02 Hexin Liu , Leibny Paola Garcia , Xiangyu Zhang , Andy W. H. Khong , Sanjeev Khudanpur

Code-switching speech refers to a means of expression by mixing two or more languages within a single utterance. Automatic Speech Recognition (ASR) with End-to-End (E2E) modeling for such speech can be a challenging task due to the lack of…

Audio and Speech Processing · Electrical Eng. & Systems 2023-03-21 Haibin Yu , Yuxuan Hu , Yao Qian , Ma Jin , Linquan Liu , Shujie Liu , Yu Shi , Yanmin Qian , Edward Lin , Michael Zeng

Automatic Cued Speech Recognition (ACSR) provides an intelligent human-machine interface for visual communications, where the Cued Speech (CS) system utilizes lip movements and hand gestures to code spoken language for hearing-impaired…

Computer Vision and Pattern Recognition · Computer Science 2023-02-28 Lei Liu , Li Liu

With the advent of globalization, there is an increasing demand for multilingual automatic speech recognition (ASR), handling language and dialectal variation of spoken content. Recent studies show its efficacy over monolingual systems. In…

Computation and Language · Computer Science 2021-07-06 Shammur Absar Chowdhury , Amir Hussein , Ahmed Abdelali , Ahmed Ali

Code-switching deals with alternative languages in communication process. Training end-to-end (E2E) automatic speech recognition (ASR) systems for code-switching is especially challenging as code-switching training data are always…

Computation and Language · Computer Science 2022-06-30 Shuai Zhang , Jiangyan Yi , Zhengkun Tian , Jianhua Tao , Yu Ting Yeung , Liqun Deng

Code-switching (CS), defined as the mixing of languages in conversations, has become a worldwide phenomenon. The prevalence of CS has been recently met with a growing demand and interest to build CS ASR systems. In this paper, we present…

Computation and Language · Computer Science 2021-08-31 Injy Hamed , Pavel Denisov , Chia-Yu Li , Mohamed Elmahdy , Slim Abdennadher , Ngoc Thang Vu

In this paper, we particularly work on the code-switched text, one of the most common occurrences in the bilingual communities across the world. Due to the discrepancies in the extraction of code-switched text from an Automated Speech…

Computation and Language · Computer Science 2020-06-17 Ahan M. R. , Shreyas Sunil Kulkarni

Designing effective automatic speech recognition (ASR) systems for Code-Switching (CS) often depends on the availability of the transcribed CS resources. To address data scarcity, this paper introduces Speech Collage, a method that…

Code-switching (CS) speech refers to the phenomenon of mixing two or more languages within the same sentence. Despite the recent advances in automatic speech recognition (ASR), CS-ASR is still a challenging task ought to the grammatical…

Computation and Language · Computer Science 2023-10-23 Chen Chen , Yuchen Hu , Chao-Han Huck Yang , Hexin Liu , Sabato Marco Siniscalchi , Eng Siong Chng

Multilingual Automated Speech Recognition (ASR) systems allow for the joint training of data-rich and data-scarce languages in a single model. This enables data and parameter sharing across languages, which is especially beneficial for the…

Audio and Speech Processing · Electrical Eng. & Systems 2020-04-22 Arindrima Datta , Bhuvana Ramabhadran , Jesse Emond , Anjuli Kannan , Brian Roark

In the FAME! Project, a code-switching (CS) automatic speech recognition (ASR) system for Frisian-Dutch speech is developed that can accurately transcribe the local broadcaster's bilingual archives with CS speech. This archive contains…

Computation and Language · Computer Science 2019-07-01 Emre Yılmaz , Samuel Cohen , Xianghu Yue , David van Leeuwen , Haizhou Li

There are few code switching datasets, labeled or unlabled, that exist today. As a result, ASR requires new methods to utilize the vast monolingual data and models that exist. This paper uses OpenAI's open source ASR model, Whisper, which…

Sound · Computer Science 2025-08-04 Linh Pham