This work presents a novel technique to enhance speech signals in the presence of interfering noise. In this paper, the amplitude and frequency (AMFM) modulation model [7] and a multi-band analysis scheme [5] are applied to extract the speech signal parameters. The enhancement process is performed using a time-warping function (n) that is used to warp the speech signal. (n) is extracted from th...

In this paper, we address the problem of monaural source separation of a mixed signal containing speech and music components. We use Discrete Energy Separation Algorithm (DESA) to estimate frequency-modulating (FM) signal energy. The FM signal energy is used to design a time-varying filter in the time–frequency domain for rejecting the interfering signal. The FM signal energy was chosen due to ...

Background: Due to the lack of a proper waste management system, Tehran Municipality Region 20 is facing economic and environmental problems such as the high costs of a disposal system and source pollution. Life cycle assessment (LCA) is a method for collecting and evaluating the inputs, outputs, and potential environmental impacts of a product system throughout its life cycle. The current stud...

Energy separation algorithms using Teager's energy operator have been used to analyze modulations in speech resonances, and energy separation in bird song. Here we apply energy separation and the energy operator to the analysis and resynthesis of musical instrument sounds. We show how the energy operator can be used to (a) examine vibrato and tremolo (b) precisely determine frequencies of harmo...