A one-microphone algorithm for reverberant speech enhancement
نویسندگان
چکیده
We present an algorithm for reverberant speech enhancement using one microphone. We first propose a novel pitch-based reverberation measure for estimating reverberation time (RT60) based on the distribution of relative time lags. This measure of pitch strength correlates with reverberation and decreases systematically as detrimental effects of reverberation on harmonic structure increase. Then a reverberant speech enhancement method is developed to estimate and subtract later echo components. The results show that our approach appreciably reduces reverberation effects.
منابع مشابه
Speech Detection and Enhancement Using Single Microphone for Distant Speech Applications in Reverberant Environments
It is well known that in reverberant environments, the human auditory system has the ability to pre-process reverberant signals to compensate for reflections and obtain effective cues for improved recognition. In this study, we propose such a preprocessing technique for combined detection and enhancement of speech using a single microphone in reverberant environments for distant speech applicat...
متن کاملPerceptual Improvement of a Two-Stage Algorithm for Speech Dereverberation
This paper presents three effective proposals for a twostage algorithm for one-microphone reverberant speech enhancement. The original algorithm is divided into two blocks: one that deals with the coloration effect, due to the early reflections, and the other for reducing the long-term reverberation. The proposed modifications consider changing the linearprediction model order, the adaptation s...
متن کاملAn event-based method for microphone array speech enhancement
This paper presents the Multi-Channel Multi-Pulse (MCMP) algorithm for the enhancement of speech degraded by reverberations and additive noise. The enhanced speech is synthesized from a sequence of impulses exciting a linear predictive lter. The excitation signal is computed from a nonlinear process which uses impulse clustering of the multi-channel speech data to discriminate portions of the l...
متن کاملA new approach to speech enhancement by a microphone array using EM and mixture models
Speech enhancement and recognition in noisy, reverberant conditions is a challenging open problem. We present a new approach to this problem, which is developed in the framework of probabilistic modeling. Our approach incorporates information about the statistical structure of speech signals using a speech model, which is pre-trained on a large dataset of clean speech. The speech model is a com...
متن کاملNovel probabilistic control of noise reduction for improved microphone array beamforming
In this paper, a novel speech enhancement algorithm is proposed. The algorithm controls the amount of noise reduction according to whether speech absence or presence in noisy environments. Based on the estimated speech absence probability (SAP), the amount of noise reduction is adaptively controlled. To calculate the SAP, normalized cross correlation of linear predictive residual signals instea...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2003