Later in the course we shall review various methods of designing frequency-selective filters satisfying prescribed specifications · We now describe several loworder- FIR and IIR digital filters with reasonable selective frequency responses that often are satisfactory in a number of applications Copyright 2001, S. K. Mitra

Stability Condition in Terms of the Pole Locations A causal lti digital filter is BIBO stable if and only if its impulse response h[n] is absolutely summable, i.e

Chapter 15: Temperature and the Ideal Gas Law了解) 1.平衡态(thermal equilibrium) 2. The Zeroth Law of Thermodynamics If two systems are in thermal equilibriu with a third system, then they are in thermal equilibrium with each other. 3.系统平衡态的宏观状态参量 Equation of state, equilibrium states 4. Absolute Temperature (Kelvin scale) T=273.15+t

Z-Transform The DTFT provides a frequency-domain representation of discrete-time signals and LTI discrete-time systems Because of the convergence condition, in many cases. the DTFT of a sequence may not exist As a result, it is not possible to make use of such frequency-domain characterization in these cases

Chapter Three Data Transfer in Digital Circuits Unit12 Part Notes to Text Part4 Extensive Reading Part 2 Word Study Part5 Notes to Passage Part3 Practice on Text Part6 Practice on Passage

What is wetland? Areas where water covers the soil Link between water and land water saturation in soil Most fertile and productive ecosystems support both aquatic and terrestrial species tound in every continents except the Antartica Wetland classification Physical hydrological

One parse tree only a The role of the grammar a distinguish between syntactically legal and illegal programs a But that's not enough: it must also define a parse tree a the parse tree conveys the meaning of the program What if a string can be parsed with multiple parse trees? a we say the grammar is ambiguous a must fix the grammar(the problem is not in the parser) a Note: often a string can be derived in more than one way D ie, with more than one derivation sequence o this does not mean the grammar is ambiguous

This socio-economic growth, together with the rapid expansion of Hong Kong's port and airport facilities and increase in cross boundary traffic, have placed tremendous demands on transport

The State of the HK Economy The Hong Kong economy staged a sharp rebound over the course of 1999, recovering robustly from the severe setback brought about by the earlier Asian financial turmoil. The recovery was strongly export-led. In consequence, there was a marked increase in the combined visible invisible trade surplus over the year

Unitl II. Listening Skills 1. M: Why don't we go to the concert today w: I'll go get the keys Q: What does the woman imply 2. W: I cant find my purse anywhere. The opera tickets are in it M: Have you checked in the car?