Speech Enhancement Using an Artificial Bandwidth Extension Algorithm in Multicast Conferencing Through Cloud Services

نویسندگان
چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Speech enhancement using STC-based bandwidth extension

Telephone speech is typically bandlimited to 4 kHz, resulting in a ‘muffled’ quality. Coding speech with bandwidth greater than 4 kHz reduces this distortion, but requires a higher bit rate to avoid other types of distortion. An alternative to coding wider bandwidth speech is to exploit correlation between the 0-4 kHz and 4-8 kHz speech bands to resynthesize wideband speech from narrowband spee...

متن کامل

Artificial bandwidth extension for speech signals using speech recogniton

In this paper, we propose a non-realtime speech bandwidth extension method using HMM-based speech recognition and HMM-based speech synthesis. In the proposed method, first, the phoneme-state sequence is estimated from the bandlimited speech signals using the speech recognition technique. Next, for estimating spectrum envelopes of lost high-frequency components, an HMM-based speech synthesis tec...

متن کامل

Synchronous overlap and add of spectra for enhancement of excitation in artificial bandwidth extension of speech

In this paper, a new approach that extends narrow-band excitation signals using synchronous overlap and add (SOLA) of spectra have been proposed. Although artificial bandwidth extension (ABE) of speech has been extensively studied, the role of excitation spectra has not been as widely studied as the spectral envelope extension. In this study ABE is investigated with the widely used source-filte...

متن کامل

Robust Wideband Enhancement of Speech by Combined Coding and Artificial Bandwidth Extension

Techniques for artificial bandwidth extension (BWE) of speech aim at the reconstruction of the complete wideband spectrum (i.e., an acoustic bandwidth of for instance 50Hz − 7 kHz) from the knowledge of the narrowband speech signal, which is often limited in bandwidth by a “telephone bandpass” (300Hz−3.4 kHz). This (still blind) reconstruction can be achieved by the estimation of parameters of ...

متن کامل

Speech Enhancement Through an Optimized Subspace Division Technique

The speech enhancement techniques are often employed to improve the quality and intelligibility of the noisy speech signals. This paper discusses a novel technique for speech enhancement which is based on Singular Value Decomposition. This implementation utilizes a Genetic Algorithm based optimization method for reducing the effects of environmental noises from the singular vectors as well as t...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Information Technology Journal

سال: 2014

ISSN: 1812-5638

DOI: 10.3923/itj.2014.1953.1960