Báo cáo hóa học: " Research Article Robust Speech Watermarking Procedure in the Time-Frequency Domain" docx

... while the others are related to the time-scale method [5, 6], or fragile content features combined with robust watermarking [7]. The existing watermarking techniques are mainly based on either the ... modeled by using speech components in the selected region. The modeling procedure is based on the concept of time-varying filtering. A detector form that includes cross-...

Ngày tải lên: 21/06/2014, 22:20

... signals: adding a noise sample at the beginning, in the middle, and at the end of the speech sample. In prelim- inary experiments, we found that a synthesized noisy speech signal with noise at the center ... samples a s the training data, respectively. Then, the speech HI-HMM was transformed to HD-HMM for the given house using the adaptation procedure described...

Ngày tải lên: 22/06/2014, 23:20

... according to the number of observed phoneme sequences in the training set, that is, if a context appears more than 50 times in the training data then a polyphone is constructed. The HMMs for the ... and the oesophagus. Then the patient can create an artificial substitute voice by breathing in and closing the hole in the neck. When the patient breathes out, the air...

Ngày tải lên: 21/06/2014, 20:20

... channels in x k as in (24), including the reference microphone. In this case, there is no estimation of the speech component that is collected by the microphones of node k itself. However, since the ... well as the in uence of several parameters such as the DFT size used for frequency domain processing, and possible delays within the communication link. The simulation...

Ngày tải lên: 21/06/2014, 20:20

... shown in the appendix that the correlation function γ(m)from(3) is a triangular function in AWGN, the ideal timing point is at the peak, and the length of the slopes is the CP interval (T g ). In ... point according to the path delay. Therefore up to the peak of the first component, the slope of the combined correlator output γ P (m) is monotonically increasing (n...

Ngày tải lên: 21/06/2014, 23:20

... hasanupperboundinP and the decreasing sequences of G[P] converge weakly in P, then G has the greatest fixed point x ∗ ,andx ∗ = max{x | x ≤ Gx}. 4. Main results One of our main results is the following theorem. Theorem ... increasing mapping, and G[P] ={Gx | x ∈ P}. (1) If G[P] has a lower bound in P and the increasing sequences of G[P] converge weakly in P, then G has the leas...

Ngày tải lên: 22/06/2014, 11:20

... training for the blind Taking pictures in the best conditions is the very starting point of a successful image processing chain. Indeed, most of the preprocessing chain can generally be eliminated ... sensitive to the quality of the image sensor and the lighting conditions. When the color is preserved into the original image, the algorithm presents a correct answer in...

Ngày tải lên: 22/06/2014, 19:20

... adapting the re- gression parameters to different driving conditions. In order to further reduce the mismatch between training and testing conditions, we synthesize the training data using the ... scheme by synthesiz- ing the training data using the optimal regression parame- ters and by selecting the optimal HMM for the test speech. The devised system turns out to be a r...

Ngày tải lên: 22/06/2014, 23:20

... well as training with BA or ST noise, involves the union of training data corresponding to the SNR levels 0 dB, 5 dB, and 10 dB. As in the previous sections, the baseline is defined by the IS feature ... Schuller, S. Steidl, A. Batliner et a l., The INTERSPEECH 2010 paralinguistic challenge,” in Proceedings of the INTER- SPEECH of Conference of the International Speech C...

Ngày tải lên: 21/06/2014, 07:20

... to adjust ΔK (i) . Since the parameters ω 1 , ω 2 ,and  K in the preceding block are obtained, ω 2 in the previous block becomes ω 1 in the upcoming data block. Hence, the estimated ω 2 and  K ... frequencies of upcoming data samples. The following processing step is proposed. Figure 2 presents the process in which the received signal is fed into the registers...

Ngày tải lên: 21/06/2014, 08:20