Single-and multi-microphone speech dereverberation using spectral enhancement

EAP Habets - 2007 - research.tue.nl
In speech communication systems, such as voice-controlled systems, hands-free mobile
telephones, and hearing aids, the received microphone signals are degraded by room …

HMM-based multipitch tracking for noisy and reverberant speech

Z Jin, DL Wang - IEEE Transactions on Audio, Speech, and …, 2010 - ieeexplore.ieee.org
Multipitch tracking in real environments is critical for speech signal processing. Determining
pitch in reverberant and noisy speech is a particularly challenging task. In this paper, we …

Temporal and spectral processing methods for processing of degraded speech: a review

P Krishnamoorthy, SRM Prasanna - IETE Technical Review, 2009 - Taylor & Francis
This paper presents an overview of several most commonly used temporal and spectral
processing methods for the enhancement of degraded speech. Three major sources of …

Relationship between contributions of temporal amplitude envelope of speech and modulation transfer function in room acoustics to perception of noise-vocoded …

M Unoki, Z Zhu - Acoustical Science and Technology, 2020 - jstage.jst.go.jp
Speech signals can be represented as a sum of amplitude-modulated frequency bands. This
sum can also be regarded as a temporal amplitude envelope (TAE) with temporal fine …

Blind estimation of speech transmission index and room acoustic parameters by using extended model of room impulse response derived from speech signals

L Wang, S Duangpummet, M Unoki - IEEE Access, 2023 - ieeexplore.ieee.org
The speech transmission index (STI) and room acoustic parameters (RAPs) are essential
metrics for assessing speech quality and predicting listening difficulty in a sound field …

Increasing speech intelligibility and naturalness in noise based on concepts of modulation spectrum and modulation transfer function

T Ngo, R Kubo, M Akagi - Speech Communication, 2021 - Elsevier
This study focuses on identifying effective features for controlling speech to increase speech
intelligibility under adverse conditions. Previous approaches either cancel noise throughout …

[HTML][HTML] Method of estimating three-dimensional direction-of-arrival based on monaural modulation spectrum

R Wang, NK Bui, D Morikawa, M Unoki - Applied Acoustics, 2023 - Elsevier
Humans have an amazing ability to monaurally locate sound sources by using various
acoustical cues. However, it is not clear how humans can perceive the direction-of-arrival …

Robust voice activity detection based on concept of modulation transfer function in noisy reverberant environments

S Morita, M Unoki, X Lu, M Akagi - Journal of Signal Processing Systems, 2016 - Springer
Voice activity detection (VAD) is used to detect speech and non-speech periods from
observed speech signals. It is an important front-end technique for many speech technology …

A speech dereverberation method based on the MTF concept in power envelope restoration

M Unoki, K Sakata, M Furukawa… - Acoustical science and …, 2004 - jstage.jst.go.jp
We previously proposed an improved method for restoring the power envelope from a
reverberant signal, based on the modulation transfer function (MTF) concept in order to …

MTF-based method of blind estimation of reverberation time in room acoustics

M Unoki, S Hiramatsu - 2008 16th European Signal Processing …, 2008 - ieeexplore.ieee.org
This paper proposes a method of blindly estimating the reverberation time based on the
concept of the modulation transfer function (MTF). It is used to estimate the reverberation …