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Single-channel speech enhancement is utilized in various tasks to mitigate the effect of interfering signals. Conventionally, to ensure the speech enhancement performs optimally, the speech enhancement has needed to be tuned for each task.…

Audio and Speech Processing · Electrical Eng. & Systems 2025-07-11 Hiroshi Sato , Tsubasa Ochiai , Marc Delcroix , Takafumi Moriya , Takanori Ashihara , Ryo Masumura

Monaural speech enhancement has made dramatic advances since the introduction of deep learning a few years ago. Although enhanced speech has been demonstrated to have better intelligibility and quality for human listeners, feeding it…

Audio and Speech Processing · Electrical Eng. & Systems 2019-03-14 Peidong Wang , Ke Tan , DeLiang Wang

Transformer-based speech enhancement models yield impressive results. However, their heterogeneous and complex structure restricts model compression potential, resulting in greater complexity and reduced hardware efficiency. Additionally,…

Hardware Architecture · Computer Science 2025-03-28 Ci-Hao Wu , Tian-Sheuan Chang

Recently, the end-to-end approach has proven its efficacy in monaural multi-speaker speech recognition. However, high word error rates (WERs) still prevent these systems from being used in practical applications. On the other hand, the…

Audio and Speech Processing · Electrical Eng. & Systems 2019-10-17 Xuankai Chang , Wangyou Zhang , Yanmin Qian , Jonathan Le Roux , Shinji Watanabe

Most current speech enhancement models use spectrogram features that require an expensive transformation and result in phase information loss. Previous work has overcome these issues by using convolutional networks to learn long-range…

Audio and Speech Processing · Electrical Eng. & Systems 2019-04-17 Jalal Abdulbaqi , Yue Gu , Ivan Marsic

Although end-to-end automatic speech recognition (E2E ASR) has achieved great performance in tasks that have numerous paired data, it is still challenging to make E2E ASR robust against noisy and low-resource conditions. In this study, we…

Audio and Speech Processing · Electrical Eng. & Systems 2021-06-08 Emiru Tsunoo , Kentaro Shibata , Chaitanya Narisetty , Yosuke Kashiwagi , Shinji Watanabe

It is known that the performance of speaker identification systems is high under the neutral talking condition; however, the performance deteriorates under the shouted talking condition. In this paper, second-order circular hidden Markov…

Sound · Computer Science 2017-07-03 Ismail Shahin

In speech machine learning, neural network models are typically designed by choosing an architecture with fixed layer sizes and structure. These models are then trained to maximize performance on metrics aligned with the task's objective.…

Sound · Computer Science 2026-01-22 Esteban Gómez , Tom Bäckström

This paper examines the implications of using the Scale-Invariant Signal-to-Distortion Ratio (SI-SDR) as both evaluation and training objective in supervised speech separation, when the training references contain noise, as is the case with…

Audio and Speech Processing · Electrical Eng. & Systems 2025-08-21 Simon Dahl Jepsen , Mads Græsbøll Christensen , Jesper Rindom Jensen

In this paper, we explore an improved framework to train a monoaural neural enhancement model for robust speech recognition. The designed training framework extends the existing mixture invariant training criterion to exploit both unpaired…

Sound · Computer Science 2022-09-21 Jisi Zhang , Catalin Zorila , Rama Doddipatla , Jon Barker

It has been shown that the intelligibility of noisy speech can be improved by speech enhancement (SE) algorithms. However, monaural SE has not been established as an effective frontend for automatic speech recognition (ASR) in noisy…

Sound · Computer Science 2024-03-12 Yufeng Yang , Ashutosh Pandey , DeLiang Wang

Most deep learning-based models for speech enhancement have mainly focused on estimating the magnitude of spectrogram while reusing the phase from noisy speech for reconstruction. This is due to the difficulty of estimating the phase of…

Sound · Computer Science 2019-04-03 Hyeong-Seok Choi , Jang-Hyun Kim , Jaesung Huh , Adrian Kim , Jung-Woo Ha , Kyogu Lee

Supervised learning based on a deep neural network recently has achieved substantial improvement on speech enhancement. Denoising networks learn mapping from noisy speech to clean one directly, or to a spectrum mask which is the ratio…

Sound · Computer Science 2023-03-10 Jaeyoung Kim , Mostafa El-Khamy , Jungwon Lee

In this paper, we propose to extend the deep, complex U-Network architecture for speech enhancement by incorporating a probabilistic (i.e., variational) latent space model. The proposed model is evaluated against several ablated versions of…

Audio and Speech Processing · Electrical Eng. & Systems 2023-09-06 Eike J. Nustede , Jörn Anemüller

Despite significant progress made in the last decade, deep neural network (DNN) based speech enhancement (SE) still faces the challenge of notable degradation in the quality of recovered speech under low signal-to-noise ratio (SNR)…

Sound · Computer Science 2024-08-20 Zhongshu Hou , Tong Lei , Qinwen Hu , Zhanzhong Cao , Ming Tang , Jing Lu

Most neural network speech enhancement models ignore speech production mathematical models by directly mapping Fourier transform spectrums or waveforms. In this work, we propose a neural source filter network for speech enhancement.…

Sound · Computer Science 2022-10-31 Shulin He , Wei Rao , Jinjiang Liu , Jun Chen , Yukai Ju , Xueliang Zhang , Yannan Wang , Shidong Shang

With recent research advancements, deep learning models are becoming attractive and powerful choices for speech enhancement in real-time applications. While state-of-the-art models can achieve outstanding results in terms of speech quality…

Audio and Speech Processing · Electrical Eng. & Systems 2021-05-20 Sebastian Braun , Hannes Gamper , Chandan K. A. Reddy , Ivan Tashev

With the development of deep learning, speech enhancement has been greatly optimized in terms of speech quality. Previous methods typically focus on the discriminative supervised learning or generative modeling, which tends to introduce…

Audio and Speech Processing · Electrical Eng. & Systems 2025-10-31 Nan Xu , Zhaolong Huang , Xiaonan Zhi

Recently, the end-to-end training approach for multi-channel ASR has shown its effectiveness, which usually consists of a beamforming front-end and a recognition back-end. However, the end-to-end training becomes more difficult due to the…

Audio and Speech Processing · Electrical Eng. & Systems 2022-10-11 Keyu An , Ji Xiao , Zhijian Ou

Self-supervised learned models have been found to be very effective for certain speech tasks such as automatic speech recognition, speaker identification, keyword spotting and others. While the features are undeniably useful in speech…

Audio and Speech Processing · Electrical Eng. & Systems 2024-03-05 Ravi Shankar , Ke Tan , Buye Xu , Anurag Kumar