Mohsen Zareian

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This paper presents a single-microphone inversefiltering of room impulse response (RIR). The estimation is carried out by maximizing the skewness of the Linear Predictive (LP) residual of reverberant speech. The proposed algorithm used LP residual skewness to develop an on-line adaptive gradient-descent algorithm for calculating an inverse filter of RIR and(More)
l-glutamaic acid is the principal excitatory neurotransmitter in the brain and an important intermediate in metabolism. In the present study, lactic acid bacteria (218) were isolated from six different fermented foods as potent sources of glutamic acid producers. The presumptive bacteria were tested for their ability to synthesize glutamic acid. Out of the(More)
The study is to identify the extraction of intracellular inulinase (exo- and endoinulinase) and invertase as well as optimization medium composition for maximum productions of intra- and extracellular enzymes from Aspergillus niger ATCC 20611. From two different methods for extraction of intracellular enzymes, ultrasonic method was found more effective.(More)
In this paper, a novel quantization-based information hiding approach which is invariant to gain attack is presented. For the data embedding, the host vector signal is first divided into two separate vectors. Then the ratio of the magnitude of the vectors is quantized according to the watermark data. The decoding scheme is performed blindly using the(More)
This paper presents a novel quantization-based information hiding approach, which is invariant to gain attack. In the presented scheme, the host signal vector is first divided into two parts, then l<sub>p</sub>-norm of each vector is calculated. The watermark bits are embedded by quantizing the ratio of the l<sub>p</sub>-norm of each part. The decoding(More)
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