1 / 2

Homework 3 (Due: Nov. 29 th ) (1) Write a Matlab program for the scaled Gabor transform .

Homework 3 (Due: Nov. 29 th ) (1) Write a Matlab program for the scaled Gabor transform . y = Gabor(x, tau, t, f, sgm) (35 scores)

bevis-solomon
Download Presentation

Homework 3 (Due: Nov. 29 th ) (1) Write a Matlab program for the scaled Gabor transform .

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Homework 3 (Due: Nov. 29th) (1) Write a Matlab program for the scaled Gabor transform. y = Gabor(x, tau, t, f, sgm) (35 scores) x: input, tau: samples on t-axis for the input, t: samples on t-axis for the output f: samples on f-axis, sgm: bound of the integration y: output (i) 程式碼要寄給我， (ii) 用 function的指令寫成函式，(iii) 自己選一個 input x (用聲音檔)， 用你們的程式將 output y 算出來並畫出來， (iv) 用 tic和 toc的指令來計算程式的 running time，(v) 模擬的例子當中，請將 tau 正確的算出來，(vi) 程式執行的時間，越短越好 (以下的例子 2 秒以內) [a1, fs] = wavread('Chord.wav'); x=a1(:,1).‘; % 只取第一聲道 tau = (自己思考 tau 該怎麼算); dt = 0.01; df= 1; t= 0:dt:max(tau); f= 80:df:1000; sgm= 200; tic y= Gabor (x, tau, t, f, sgm); toc

  2. (2) What are the advantage of (a) the S transform (b) the modified form II WDF on page 163 ? (15 scores) (3) Suppose that the WDF of x(t) is as the left figure and the WDF of exp(jat2+dt)x(bt +c). Please determine the values of a, b, c, d. (10 scores) (0,2) (-3,0) (1,0) (0, -1) (4) (a) What are the advantages of using the time-frequency analysis for filter design? (b) How do we remove the component in the right of the line f + 3t = 10 in the time-frequency plane? (20 scores) (5) Among the Gabor transform and the WDF, which one is better for the applications of (a) filter design for deterministic signal , (b) signal sampling, (c) modulation and multiplexing, and (d) optical system analysis? Also illustrate the reasons. (20 scores) (7,4) (1,1) (7,2) (1,-1)

More Related