solutions of the difference equations

... then their product is well-defined The result is also a matrix with the number of rows equal to that of the first matrix and the number of columns equal to that of the second matrix Note that the ... search for the ISBN of your title (from the back cover of your book) using the search box at the top of the page This will take you to the product page where these resources can be found Further information ... and for easy reading The script is executed by typing the name of the script at the command prompt The script file must be in the current directory on in the directory of the path environment...

Ngày tải lên: 18/10/2015, 20:05

... is mathematically exact There is no difference between the signal in (a) and the sum of the signals in (b), just as there is no difference between and 3+4 Why are sinusoids used instead of, for ... part of X [ ] , written as: Im X [ ] The values in Re X [ ] are the amplitudes of the cosine waves, while the values in Im X [ ] are the amplitudes of the sine waves (not worrying about the scaling ... affecting the synthesis of the time domain signal Here's a puzzle: If there are N samples entering the DFT, and N%2 samples exiting, where did the extra information come from? The answer: two of the...

Ngày tải lên: 13/09/2012, 09:49

... conjugate of the complex number z In[5]: ?Abs Out[5]: Abs[z] gives the absolute value of the real or complex number z In[6]: ?Arg Out[6]: Arg[z] gives the argument of z DRAFT of “Mathematics of the ... EULER’S THEOREM The special case k = is called the primitive M th root of unity, since integer powers of it give all of the others: ej2πk/M = ej2π/M k The M th roots of unity are so important that they ... generator of the mathematical group consisting of the M th roots of unity and their products We will learn later that the N th roots of unity are used to generate all the sinusoids used by the DFT...

Ngày tải lên: 31/03/2014, 15:21

... case the “inverse” is named appropriately, since we really recover x[n] exactly from {X[k]} k=0 The proof of this is essentially identical to the proof given for the self-consistency of the DTFS ... reverse) the other sequence h[n] by drawing it CW around a circle See illustration on subsequent page • s[0] is the sum of the element-by-element product of the two sequences around the circle For the ... timereversal, and time-shift in the context of time-limited signals The “appropriate” definitions (meaning the ones that work with the DFT) are defined in terms of the periodic extension of a signal (Do convolution...

Ngày tải lên: 08/06/2014, 20:19

... in the diagonal of B1 to achieve stability In the second method we alter the diagonal of B1 , with a value k > Changing the diagonal both improves the performance and ensures stability In the ... eigenvectors of these commuting matrices and find the norm of error between samples of corresponding Hermite-Gaussian functions and the eigenvectors First we compare total norms of errors between the Hermite-Gaussian ... 2(b) The error norm is measured as the norm of error between the samples of Hermite-Gaussian functions and HermiteGaussian like eigenvectors of B using these matrices As it is clear from the figures,...

Ngày tải lên: 21/06/2014, 16:20

... s(t) The peak magnitude of the Gibbs oscillation is 13% − + of the size of the jump discontinuity s(t0 ) − s(t0 ) regardless of the number of terms used in the approximation As N increases, the ... (1.14b) The set of all values of u for which the integral of (1.14b) converges is called the region of convergence (ROC) Because the transform S(u) is defined only for values of u within the ROC, the ... linear convolution of the periodic extensions of the finite sequences being convolved, in which each of the finite sequences of length N defines the structure of one period of the periodic extensions...

Ngày tải lên: 27/01/2014, 03:20

... Figure The computation of the DFT as coprocessor then has three stages (a) The serial data transfer to the coprocessor (b) The computation of the DFT, until the first output value is available (c) The ... Table shows the advantages of the CZT implementation The effort for the CSD, MAG, and RAG-n methods for the CZT DFT up to a length of 256 is graphically interpreted in Figure Note that the DFTs with ... twice the size of the RAG-CZT By providing a sufficient amount of extra buffer memory all of the above algorithms can be modified in such a way that the pipelined FFT computation is only limited by the...

Ngày tải lên: 22/06/2014, 23:20

... of their names, all of the values in these arrays are just ordinary numbers (If you are familiar with complex numbers: the j's are not included in the array values; they are a part of the mathematics ... using the FFT algorithm) First, move the N point signal into the real part of the complex DFT's time domain, and then set all of the samples in the imaginary part to zero Calculation of the complex ... precision) The second test of proper operation is that the signals have the correct symmetry When the imaginary part of the time domain signal is composed of all zeros (the normal case), the frequency...

Ngày tải lên: 13/09/2012, 09:50

... placed in the real part of the time domain, while the other is place in the imaginary part After the FFT calculation, the spectra of the two signals are separated by an even/odd decomposition The Family ... in the calculation of the imaginary part of the frequency spectrum (an option used to make the real transforms more consistent with the complex transforms) Lastly, the synthesis equations for the ... numbers in these equations There isn't a j anywhere in sight! We have also included the normalization factor, 2/N in these equations Remember, this can be placed in front of either the synthesis...

Ngày tải lên: 13/09/2012, 10:20

... (from the perspective of the POTS dial peer 1), the POTS dial peer establishes the source (via the originating telephone number or voice port) of the call The VoIP dial peer establishes the destination ... comparing the called number (the full E.164 telephone number) in the call information with the number configured as the destination pattern for the POTS peer The router then strips out the left-justified ... destination-pattern of “1310555” and a prefix of “9,” the router will strip out “1310555” from the E.164 telephone number, leaving the extension number of “2222.” It will then append the prefix, “9,” to the front...

Ngày tải lên: 22/10/2013, 09:15

... directly to the subtending system that connects on the edge of the network The subtending system aggregates the traffic from the subtended systems, switches all the traffic (its own and that of the subtended ... Quality of Service (QoS) and overbooking ratios Benefits of Subtending Minimize the Expense of Central Office DSL Deployment As DSL networks are built out to Central Office co-locations, the access ... chain systems, and are just a few of the many configurations available through subtending The subtending systems in each configuration aggregate the transmissions of the subtended systems and provide...

Ngày tải lên: 21/12/2013, 06:20

Ngày tải lên: 24/12/2013, 12:16

Ngày tải lên: 07/03/2014, 13:20

Ngày tải lên: 09/03/2014, 15:20

... on the evidence I left in the theater At the time I dreaded the consequences of being late for class over the consequences of what would happen to me if the school figured out who trashed the theater… ... stuff just happened to me The burning down of schools, the flooding of schools, and the infestation of huge, tropical insects of schools… All fell into the category of been there, done that It's ... understand the social order of things The rest of the girls are just followers, with no minds of their own.” “Wonderful,” I mumbled under my breath “Just steer clear and they won’t bother you… most of...

Ngày tải lên: 16/03/2014, 18:20

... All the people of Egypt love singing Their voices are soft and sweet The boatmen on the Nile sing as they row The fruit-sellers sing as they cry their wares in the streets Many of the boys in the ... the mouth of the well there is a wheel 12 A rope runs over this wheel At one end of the rope there is a large leather bag The other end of the rope is fastened to the necks of a pair of bullocks ... the dogs of the villages play together You can see two boys in the picture One of them is standing by his mother The other boy is riding on a buffalo 10 In the middle of the village there is...

Ngày tải lên: 22/03/2014, 16:22

... arm The bones of the forearm The bones of the wrist 10 The bones of the fingers 11 The bones of the thigh 12 The bones of the lower leg 13 The bones of the ankle 14 The bones of the toes 15 The ... of the wrist 5, 6, 7, 8, the lower row of the bones of the wrist 9, 10, the lower ends of the bones of the fore-arm 11, 12, 13, 14, 15, the upper ends of the bones of the palm of the hand The ... ears?—"On the sides of my head." Which is the rim of the ear?— "The edge of the ear." Which is the flap of the ear?— "The lower part of the ear." Where is the drum of the ear?—"Inside of the ear."...

Ngày tải lên: 22/03/2014, 22:20

Ngày tải lên: 23/03/2014, 11:20

... operation IEC 61158-5 defines the services provided e) to the various user(s) of the fieldbus Application Layer at the boundary between the user(s) and the Application Layer of the fieldbus Reference ... of the same type, or with other combinations as specified in IEC 61784 Use of the various protocol types in other combinations may require permission from their respective copyright holders These ... illustrates the differences between Service and protocol viewpoints of the Data Link and Application Layers The protocol parts show the layer implementer’s view and the Service parts show the Layer...

Ngày tải lên: 04/04/2014, 12:18