advanced air and noise pollution control

... Performance and Costs of Air Pollution Control Technologies Lawrence K. Wang, Jiann-Long Chen, and Yung-Tse Hung 385 1. Introduction 385 1.1. Air Emission Sources and Control 385 1.2. Air Pollution Control ... Indoor Air Pollution and Health Effects 238 2.1. Sources of Indoor Air Pollution 238 2.2. Health Effects of Indoor Air Pollutants 240 3. Indoor Air...

Ngày tải lên: 01/04/2014, 11:43

... pollution and climate; noise pollution abatement and control services; testing and monitoring of air or noise pollution; and other services incidental to air and noise pollution abatement. The USTR ... and demand for air and noise pollution abatement services in the global marketplace. Chapters 4, 5, and 6 present discussions on air pollution abate...

Ngày tải lên: 23/03/2014, 00:20

Ngày tải lên: 18/02/2014, 04:20

... 80 Hz; band 2 is band-pass and covers 80 Hz to 3 kHz; band 3 is high-pass and covers above 3 kHz; and band 4 is also high-pass and covers above 9 kHz. At the encoder the gain of each band is ... enhancement and speech recognition. Speech is generated by inhaling air into the lungs, and then exhaling it through the vibrating glottis cords and the vocal tract. The random,...

Ngày tải lên: 21/01/2014, 07:20

... noise or any wideband noise whose spectrum has a non-flat shape; examples are pink noise, brown noise and autoregressive noise. (e) Impulsive noise: consists of short-duration pulses of random ... Estimation and Modulation Theory. Parts I, II and III. Wiley, New York. 2 NOISE AND DISTORTION 2.1 Introduction 2.6 Thermal Noise 2.2 White Noise 2.7 Shot...

Ngày tải lên: 21/01/2014, 07:20

... Autocorrelation and power spectrum of impulsive noise. Impulsive noise is a random, binary-state (“on/off”) sequence of impulses of random amplitudes and random time of occurrence. In Chapter 12, a random ... speech and noise are at least in part random. The concept of randomness is closely associated with the concepts of information and noise. Indeed, much of the work on t...

Ngày tải lên: 21/01/2014, 07:20

... Gaussian with mean vector µ x and covariance matrix Σ xx , and that the noise n (m) is also Gaussian with mean vector µ n and covariance matrix Σ nn . The signal and noise pdfs model the prior ... two-dimensional signal and noise process, the prior spaces of the signal, the noise, and the noisy signal are illustrated in Figure 4.6. Also illustrated are the likelih...

Ngày tải lên: 21/01/2014, 07:20

... signal and the noise HMMs maybe expressed as ()       = η ,,,maxmaxarg noisesignalsignal noise signal M ssYs Y s s f MAP (5.46) and ()         = η ,,,maxmaxarg noisesignalnoise signal noise M ssYs Y s s f MAP ... filtering and the spectral subtraction methods described in Chapters 6 and 11) or by combining the noise and the signal models to model the n...

Ngày tải lên: 21/01/2014, 07:20

... signal, the noise- free signal and the noise respectively, and r xy is the cross- correlation vector of the noisy signal and the noise- free signal. Substitution of Equations (6.46) and (6.47) ... separability: (a) The signal and noise spectra do not overlap, and the signal can be recovered by a low-pass filter; (b) the signal and noise spectra overlap, and the n...

Ngày tải lên: 21/01/2014, 07:20

... steepest-descent method, and then consider the computationally inexpensive LMS gradient search method. A z –1 w k ( m+ 1) α y ( m ) e ( m ) µ α w ( m ) Advanced Digital Signal Processing and Noise Reduction, ... () [] 01| ~ )1|( ˆ =−− mmmm xx E (7.20) and we have also used the assumption that the signal and the noise are uncorrelated. Substitution of Equations (7.9)...

Ngày tải lên: 21/01/2014, 07:20