多媒體技術(shù)課后題PPT學(xué)習(xí)教案

1、會(huì)計(jì)學(xué)1多媒體技術(shù)課后題多媒體技術(shù)課后題however.第1頁(yè)/共102頁(yè)第2頁(yè)/共102頁(yè)第3頁(yè)/共102頁(yè)第4頁(yè)/共102頁(yè)160224第5頁(yè)/共102頁(yè)第6頁(yè)/共102頁(yè)第7頁(yè)/共102頁(yè)第8頁(yè)/共102頁(yè)第9頁(yè)/共102頁(yè)第10頁(yè)/共102頁(yè)第11頁(yè)/共102頁(yè)第12頁(yè)/共102頁(yè)第13頁(yè)/共102頁(yè)第14頁(yè)/共102頁(yè)第15頁(yè)/共102頁(yè)第16頁(yè)/共102頁(yè)incidentally, we also decrease highlight contrast and increase contrast in the shadows.第17頁(yè)/共102頁(yè)第18頁(yè)/共102頁(yè)第19頁(yè)/共10

2、2頁(yè)第20頁(yè)/共102頁(yè)第21頁(yè)/共102頁(yè)第22頁(yè)/共102頁(yè)第23頁(yè)/共102頁(yè)第24頁(yè)/共102頁(yè)on the screen at a much higher rate, typically the refresh rate 60 to 90 Hz so no flicker is perceived.第25頁(yè)/共102頁(yè)第26頁(yè)/共102頁(yè)第27頁(yè)/共102頁(yè)reality.第28頁(yè)/共102頁(yè)第29頁(yè)/共102頁(yè)and even lines of the image.第30頁(yè)/共102頁(yè)with significant serrated lines near them.第31頁(yè)/共1

3、02頁(yè)第32頁(yè)/共102頁(yè)of the image.第33頁(yè)/共102頁(yè)第34頁(yè)/共102頁(yè)第35頁(yè)/共102頁(yè)Answer:第36頁(yè)/共102頁(yè)第37頁(yè)/共102頁(yè)第38頁(yè)/共102頁(yè)第39頁(yè)/共102頁(yè)第40頁(yè)/共102頁(yè)conversation well if the noise level were at all high. State how you think a karaoke machine works.第41頁(yè)/共102頁(yè)第42頁(yè)/共102頁(yè)第43頁(yè)/共102頁(yè)for a signal is 60 dB. Can we use 10 bits for this signal?

4、 Can we use 16 bits?第44頁(yè)/共102頁(yè)第45頁(yè)/共102頁(yè)第46頁(yè)/共102頁(yè)第47頁(yè)/共102頁(yè)(or -law) attempt to approximate? Why could it improve quantization?第48頁(yè)/共102頁(yè)第49頁(yè)/共102頁(yè)第50頁(yè)/共102頁(yè)for one channel before the NoteOff message is sent.第51頁(yè)/共102頁(yè)must be in 0.127.第52頁(yè)/共102頁(yè)第53頁(yè)/共102頁(yè)(3) data =“velocity”=loudness.第54頁(yè)/共102頁(yè)第55頁(yè)

5、/共102頁(yè)第56頁(yè)/共102頁(yè)第57頁(yè)/共102頁(yè)第58頁(yè)/共102頁(yè)第59頁(yè)/共102頁(yè)第60頁(yè)/共102頁(yè)第61頁(yè)/共102頁(yè)第62頁(yè)/共102頁(yè)第63頁(yè)/共102頁(yè)第64頁(yè)/共102頁(yè)(b) Suppose the alphabet is A，B，C, and the known probability distribution is PA = 0.5; PB =0.4; PC = 0.1. For simplicity, lets also assume that both encoder and decoder know that the length of the message

6、s is always 3, so there is no need for a terminator.i. How many bits are needed to encode the message BBB by Huffman coding?Answer:6 bits. Huffman Code: A - 0, B - 10, C - 11; or A - 1, B - 00, C - 01.第65頁(yè)/共102頁(yè)第66頁(yè)/共102頁(yè)be sent before any letter if it is to be sent the first time.第67頁(yè)/共102頁(yè)第68頁(yè)/共10

7、2頁(yè)第69頁(yè)/共102頁(yè)第70頁(yè)/共102頁(yè)第71頁(yè)/共102頁(yè)第72頁(yè)/共102頁(yè)第73頁(yè)/共102頁(yè)第74頁(yè)/共102頁(yè)位置12345678910 11 12 13 14 15 16 17字符ababcbababaaaaaaa第75頁(yè)/共102頁(yè)第76頁(yè)/共102頁(yè)第77頁(yè)/共102頁(yè)第78頁(yè)/共102頁(yè)第79頁(yè)/共102頁(yè)第80頁(yè)/共102頁(yè)第81頁(yè)/共102頁(yè)第82頁(yè)/共102頁(yè)第83頁(yè)/共102頁(yè)第84頁(yè)/共102頁(yè)第85頁(yè)/共102頁(yè)第86頁(yè)/共102頁(yè)=200第87頁(yè)/共102頁(yè)F2(u, v):第88頁(yè)/共102頁(yè)第89頁(yè)/共102頁(yè)第90頁(yè)/共102頁(yè)第91頁(yè)/共102頁(yè)第92頁(yè)/共