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In this paper, we study the task of subjective speech quality assessment (SSQA), which refers to predicting the perceptual quality of speech. Owing to the development of deep neural network models, SSQA has greatly advanced and has been…

Sound · Computer Science 2026-04-27 Wen-Chin Huang , Erica Cooper , Tomoki Toda

Designing a speech quality assessment (SQA) system for estimating mean-opinion-score (MOS) of multi-rate speech with varying sampling frequency (16-48 kHz) is a challenging task. The challenge arises due to the limited availability of a…

Audio and Speech Processing · Electrical Eng. & Systems 2026-02-17 Fengyuan Cao , Xinyu Liang , Fredrik Cumlin , Victor Ungureanu , Chandan K. A. Reddy , Christian Schuldt , Saikat Chatterjee

Automatic methods to predict Mean Opinion Score (MOS) of listeners have been researched to assure the quality of Text-to-Speech systems. Many previous studies focus on architectural advances (e.g. MBNet, LDNet, etc.) to capture relations…

Sound · Computer Science 2022-06-29 Aki Kunikoshi , Jaebok Kim , Wonsuk Jun , Kåre Sjölander

Human judgments obtained through Mean Opinion Scores (MOS) are the most reliable way to assess the quality of speech signals. However, several recent attempts to automatically estimate MOS using deep learning approaches lack robustness and…

Audio and Speech Processing · Electrical Eng. & Systems 2022-06-27 Pranay Manocha , Anurag Kumar

Automatic Mean Opinion Score (MOS) prediction is employed to evaluate the quality of synthetic speech. This study extends the application of predicted MOS to the task of Fake Audio Detection (FAD), as we expect that MOS can be used to…

Audio and Speech Processing · Electrical Eng. & Systems 2024-01-26 Wangjin Zhou , Zhengdong Yang , Chenhui Chu , Sheng Li , Raj Dabre , Yi Zhao , Tatsuya Kawahara

Assessing the perceptual quality of synthetic speech is crucial for guiding the development and refinement of speech generation models. However, it has traditionally relied on human subjective ratings such as the Mean Opinion Score (MOS),…

Modern speech synthesis systems have improved significantly, with synthetic speech being indistinguishable from real speech. However, efficient and holistic evaluation of synthetic speech still remains a significant challenge. Human…

Computation and Language · Computer Science 2023-10-03 Dareen Alharthi , Roshan Sharma , Hira Dhamyal , Soumi Maiti , Bhiksha Raj , Rita Singh

The aim of this project is to implement and design arobust synthetic speech classifier for the IEEE Signal ProcessingCup 2022 challenge. Here, we learn a synthetic speech attributionmodel using the speech generated from various…

Neural TTS has shown it can generate high quality synthesized speech. In this paper, we investigate the multi-speaker latent space to improve neural TTS for adapting the system to new speakers with only several minutes of speech or…

Audio and Speech Processing · Electrical Eng. & Systems 2019-09-04 Yan Deng , Lei He , Frank Soong

The automatic speech quality assessment (SQA) has been extensively studied to predict the speech quality without time-consuming questionnaires. Recently, neural-based SQA models have been actively developed for speech samples produced by…

Sound · Computer Science 2025-06-24 Yuto Kondo , Hirokazu Kameoka , Kou Tanaka , Takuhiro Kaneko

Recent Text-to-Speech (TTS) systems trained on reading or acted corpora have achieved near human-level naturalness. The diversity of human speech, however, often goes beyond the coverage of these corpora. We believe the ability to handle…

Audio and Speech Processing · Electrical Eng. & Systems 2023-02-09 Li-Wei Chen , Shinji Watanabe , Alexander Rudnicky

We present the first edition of the VoiceMOS Challenge, a scientific event that aims to promote the study of automatic prediction of the mean opinion score (MOS) of synthetic speech. This challenge drew 22 participating teams from academia…

Sound · Computer Science 2022-07-05 Wen-Chin Huang , Erica Cooper , Yu Tsao , Hsin-Min Wang , Tomoki Toda , Junichi Yamagishi

Perceptual speech quality is an important performance metric for teleconferencing applications. The mean opinion score (MOS) is standardized for the perceptual evaluation of speech quality and is obtained by asking listeners to rate the…

Sound · Computer Science 2022-12-06 Haleh Akrami , Hannes Gamper

In online conferencing applications, estimating the perceived quality of an audio signal is crucial to ensure high quality of experience for the end user. The most reliable way to assess the quality of a speech signal is through human…

Audio and Speech Processing · Electrical Eng. & Systems 2023-08-24 Bastiaan Tamm , Rik Vandenberghe , Hugo Van hamme

Speech quality assessment is a critical process in selecting text-to-speech synthesis (TTS) or voice conversion models. Evaluation of voice synthesis can be done using objective metrics or subjective metrics. Although there are many…

Sound · Computer Science 2025-06-04 Saurabh Agrawal , Raj Gohil , Gopal Kumar Agrawal , Vikram C M , Kushal Verma

Speech quality assessment (SQA) aims to evaluate the quality of speech samples without relying on time-consuming listener questionnaires. Recent efforts have focused on training neural-based SQA models to predict the mean opinion score…

Sound · Computer Science 2025-06-24 Yuto Kondo , Hirokazu Kameoka , Kou Tanaka , Takuhiro Kaneko

Predicting audio quality in voice synthesis and conversion systems is a critical yet challenging task, especially when traditional methods like Mean Opinion Scores (MOS) are cumbersome to collect at scale. This paper addresses the gap in…

Sound · Computer Science 2023-12-27 Aditya Ravuri , Erica Cooper , Junichi Yamagishi

Automatic methods to predict listener opinions of synthesized speech remain elusive since listeners, systems being evaluated, characteristics of the speech, and even the instructions given and the rating scale all vary from test to test.…

Audio and Speech Processing · Electrical Eng. & Systems 2022-02-15 Erica Cooper , Wen-Chin Huang , Tomoki Toda , Junichi Yamagishi

In recent years, neural network based methods for multi-speaker text-to-speech synthesis (TTS) have made significant progress. However, the current speaker encoder models used in these methods still cannot capture enough speaker…

Sound · Computer Science 2022-03-29 Jinlong Xue , Yayue Deng , Yichen Han , Ya Li , Jianqing Sun , Jiaen Liang

As a subjective metric to evaluate the quality of synthesized speech, Mean opinion score~(MOS) usually requires multiple annotators to score the same speech. Such an annotation approach requires a lot of manpower and is also time-consuming.…

Sound · Computer Science 2023-06-21 Kexin Wang , Yunlong Zhao , Qianqian Dong , Tom Ko , Mingxuan Wang