analog data to digital signal ppt

Ngày tải lên: 31/03/2014, 22:20

... 35 The Sampling Theorem 39 Digital -to -Analog Conversion 44 Analog Filters for Data Conversion 48 Selecting the Antialias Filter 55 Multirate Data Conversion 58 Single Bit Data Conversion 60 Chapter ... Continuous Signal Processing 243 DIGITAL FILTERS Chapter 14. Introduction to Digital Filters 261 Chapter 15. Moving Average Filters 277 Chapter 16. Windowed-Sinc Filters 285 Chapter 17. Custom Filters ... this book. If you do not wish to be bound by the above, you may return this book to the publisher for a full refund. The Scientist and Engineer's Guide to Digital Signal Processing Second Edition by Steven...

Ngày tải lên: 13/09/2012, 10:21

... can be considered a bandlimited signal. It is this signal that is sampled and converted to a discrete-time signal and coded to a digital signal by the analog- to- digital converter (ADC) that was ... sinusoidal signal, which is a continuous-time signal, and a discrete-time signal. We dis- cussed the basic procedure followed to sample and quantize an analog signal ANALOG AND DIGITAL SIGNAL PROCESSING 25 different ... ability to compress the data by a significant factor and receive the input signal at lower cost and very good quality. To point out the power of digital signal processing theory and the digital signal...

Ngày tải lên: 13/09/2012, 10:21

... ability to compress the data by a significant factor and receive the input signal at lower cost and very good quality. To point out the power of digital signal processing theory and the digital signal ... manufacture of analog filters, we may have to tune each of them to correct for manufacturing tolerances, but there is no such need to test the accuracy of the wordlength in digital filters. Data on digital ... the phone to the BTS in the next cell, which may offer a stronger signal. If no such cell is nearby, the caller is cut off (i.e., will not be able to receive or to send ANALOG AND DIGITAL SIGNAL...

Ngày tải lên: 29/09/2013, 21:20

Ngày tải lên: 28/06/2014, 06:20

... to an analog signal for people to hear. The process to convert digital signals to analog signals is completed by a DAC. The most commonly used technique to convert digital signals to analog signals ... system into FIGURE 3.4: Quantization. ANALOG- TO- DIGITAL CONVERSION 55 3.3.2 Integration The integration technique uses an integrator, a comparator, and a controller to convert analog signals to digital ... microcontroller MSB LSB Comparators 2.5 v 1/2 1/4 1/8 1/2 n Adder Quantized Analog Signal Scalar Multipliers FIGURE 3.11: A summation method to convert a digital signal into a quantized analog signal. Comparators are...

Ngày tải lên: 29/09/2013, 20:20

... signal. In this section, we first discuss how to convert analog signals into digital signals so that they can be processed using DSP hardware. The process of changing an analog signal to a xdigital ... Processing Signals can be divided into three categories ± continuous-time (analog) signals, discrete-time signals, and digital signals. The signals that we encounter daily are mostly analog signals. ... applica- tions, the input data may already be in digital form and/or the output data may not need to be converted to an analog signal. For example, the processed digital information may be stored in computer...

Ngày tải lên: 17/10/2013, 14:15

... In practice, high-level language tools such 40 INTRODUCTION TO TMS320C55X DIGITAL SIGNAL PROCESSOR 2 Introduction to TMS320C55x Digital Signal Processor Digital signal processors with architecture ... least-significant-bit (LSB) of the data address since data stored in memory is in word units. The 16 Mbytes memory map is shown in Figure 2.6. Data space is divided into 128 data pages (0±127). Each page ... exp2b_4.asm. 74 INTRODUCTION TO TMS320C55X DIGITAL SIGNAL PROCESSOR are added with the contents in the accumulators AC2 and AC3, and the final results are stored back to AC2 and AC3. 2.6 TMS320C55x...

Ngày tải lên: 19/10/2013, 23:15

... Introduction to Telecommunications, Winter 2000 Lecture-22 Digital Transmission Digital Transmission of Analog Data (Baseband Transmission): • Analog voice data must be translated into a series ... domain. To get back the original analog signal we have to convert back the sampled signal to its unique analog form. We could do it if we have taken enough samples of the original signal in ... an analog signal is converted to its digital form. • To obtain either form of pulse modulation we start with sampling. Sampling is the process of taking samples (amplitude) of an analog signal...

Ngày tải lên: 09/12/2013, 16:15

... Number Patchcord LCP to LCP 3’ 735 Cable PCH-DDXC-003 Patchcord LCP to LCP 6’ 735 Cable PCH-DDXC-006 Patchcord LCP to LCP 12’ 735 Cable PCH-DDXC-012 Cross Connect Cable LCC to LCC Dual 735 3’ XCC-CCXD-003 Cross ... Cable LCC to LCC Dual 735 6’ XCC-CCXD-006 Cross Connect Cable LCC to LCC Dual 735 12’ XCC-CCXD-012 Cross Connect Cable LCC to LCC Dual 735 15’ XCC-CCXD-015 Cross Connect Cable LCC to LCC Dual ... 6 Pack 3AC-6BB Bulk Cable-735 12 Pack 3AC-12BB 735 LCC Connectors-100 Pack LCC-3B LCC Insertion/Withdrawal Toolkit LCA-400004 LCC Tool Kit with Power Stripper LCA-600001-BS O r d e r i n g I...

Ngày tải lên: 10/12/2013, 18:15

... the array output vector has a correlated signal component at a different DOA, to minimize the output powermaycause the desired signal itself to be strongly attenuated. This is the signal cancellation ... R n of the disturbance vector n, in general, to implement the MV beamformer it is sufficient to estimate the array covariance matrix R using the available data z. We discuss how to estimate R.LetT time ... the complex sensor noise vector. The noise u(t ) will be assumed to be zero mean Gaussian with known covariance matrix σ 2 I. The goal is to estimate the signal vector s(t) using a MMSE beamformer...

Ngày tải lên: 13/12/2013, 00:15

... arraysteeringvectors b(µ i ), cf. (63.24) and (63.25). This insight enablesusto apply only B  M successive rows of W H M (instead of all M rows) to the data matrix X in Eq. (63.26). To stress the ... W B y . 10 Then apply the vec{·}-operator, and place the resulting B × 1 vector (B = B x · B y ) as a column of a matrix Y ∈ C B×N . The vec{·}-operator maps a B x × B y matrixtoaB × 1 vector by stacking the columns of ... the DOAs are restricted to the interval −90 ◦ <θ i < 90 ◦ to avoid ambiguities. In the sequel, the d impinging signals s i (t), 1 ≤ i ≤ d, are combined to a column vector s(t). Then the noise-corrupted...

Ngày tải lên: 13/12/2013, 00:15

... that steering vectors are orthogonal to noise subspace eigenvectors. It further implies that because of the orthogonality of signal and noise subspaces, spans of signal eigenvectors and steering vectors ... the eigenvector parti- tionment into signal and noise subspaces, leads to a number of subspace-based direction finding methods. The signal subspace contains information about where the signals are ... coherence) and has been shown to have the same asymptotic properties as the stochastic ML method; hence, it is asymptotically efficient for Gaussian signals (i.e., it achieves the stochastic CRB). Its behavior...

Ngày tải lên: 13/12/2013, 00:15

... these cases, a linear predictor can be used to model the signal correlations for a short block of data in such a way as to reduce the number of bits needed to represent the signal waveform. Then, ... circuit so long as L is not too large and the sampling period for the signals is not too short. It also requires a total of 2L memory locations to store the L input signal samples and the L coefficient ... desired response signal d(n) consists of a sum of a broadband signal and a nearly periodic signal, and it is desired to separate these two signals without specific knowledge about the signals (such...

Ngày tải lên: 13/12/2013, 00:15

... available. Consider a record of length N divided into two nonoverlapping segments each of length N/2.Let KN B = N/2 and use the estimators such as (16.23) to obtain the estimator  S (l) xx (m) of the power spectrum ... been found to be useful in a wide variety of signal processing tasks such as signal detection, estimation, filtering, and classification, and in a wide variety of applications such as digital communications, ... expended on developing approaches to linear model fitting given a single measurement record of the signal (or noisy signal) . Parsimonious parametric models such as AR (autoregressive), MA (moving average),...

Ngày tải lên: 13/12/2013, 00:15

... signal. In this section, we first discuss how to convert analog signals into digital signals so that they can be processed using DSP hardware. The process of changing an analog signal to a xdigital ... 0x20; 22 INTRODUCTION TO REAL-TIME DIGITAL SIGNAL PROCESSING 1 Introduction to Real-Time Digital Signal Processing Signals can be divided into three categories ± continuous-time (analog) signals, discrete-time signals, ... real- world analog signal is converted to a digital signal, processed by DSP hardware in 2 INTRODUCTION TO REAL-TIME DIGITAL SIGNAL PROCESSING (a) (b) Figure 1.16 Connect probe point to a file:...

Ngày tải lên: 14/12/2013, 13:15

Ngày tải lên: 21/12/2013, 06:16

Ngày tải lên: 21/12/2013, 19:15

Ngày tải lên: 22/12/2013, 21:17