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Roger


Last seen: 4 months ago |  Active since 2013

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Question


audio compressed to 10kbps using pcm
single chanel , 8k sample rate and 16bit , i want to compressed to 10kbps , can pcm make it ?

9 years ago | 1 answer | 0

1

answer

Question


how to make the command line invisible
i use "start matlab -nosplash -nodesktop -minimize -r test" to start my script ,but it did show the command line , i did not wan...

9 years ago | 1 answer | 1

1

answer

Answered
How to get the FFT of a PRC file
y= prcdata(:,6); x=1:size(prcdata,1); z= fft(y); plot(x,z);

9 years ago | 1

| accepted

Answered
Problem with matrix manipulation
A = [A1 A2 ... An];% do not use ","

9 years ago | 0

| accepted

Question


zero phase spectrum and filtfilt function
Fs = 1; % Sampling Frequency N = 50; % Order Fc1 = 1/f1;%7s % First Cutoff Frequency Fc2 = 1...

9 years ago | 1 answer | 0

1

answer

Question


about bandstop filter ,how to make its side lope be 0 dB
i use the filter design tools to design bandstop filter ,but in some frequency of passband ,its gain is larger than 0 db,how t...

9 years ago | 0 answers | 0

0

answers

Question


legend text size changing while ticklabel size changing
i just want to change the size of xticklabel not the legend text size , but this did not work. They all changed. set(gca,'x...

9 years ago | 1 answer | 0

1

answer

Question


can matlab record the order of files i choosed one after another
i want to subplot them and ordered by the sequence one after another,

9 years ago | 0 answers | 0

0

answers

Question


file ordered by the sequence mouse selecting
there r several files ,for example,b.txt, c.txt , e.txt, a.txt; i want to order them by the mouse selecting sequence. fir...

9 years ago | 1 answer | 0

1

answer

Answered
Problem with "uigetfile" command in a compiled executable
[filename, pathname, filterindex] = uigetfile( ... { '*.mat','MAT-files (*.mat)'; ... '*.slx;*.mdl','Models (*.slx, ...

9 years ago | 0

Question


how to save a zone of figure as picture
if i use gcf , it get the whole figure saved . i just want to save a special zone of this figure. a rectangle zone , is there a...

9 years ago | 2 answers | 0

2

answers

Question


problem about filter order in design tool
this is the filter i designed <</matlabcentral/answers/uploaded_files/30441/yy.png>> the specify order is 101 , and in ...

9 years ago | 2 answers | 0

2

answers

Question


how to eliminate the blank between subplot ?
what i mean is to make subplot box close to each other

9 years ago | 2 answers | 0

2

answers

Question


how many kinds of correlation coefficients in matlab or math?
i only find one function corrcoef(), is there another one ?

9 years ago | 1 answer | 0

1

answer

Question


how to make audio sound like continuous between each loop
in each loop i use sound(sig) , the length of sig is about o.5s, if i use pause in each loop, it may sound discontinuous ,if not...

9 years ago | 1 answer | 0

1

answer

Answered
in GUI , how to make the handles be used in my function?
ok, i found one way ,just set the handles as a parameter and pass it to my function. function myfun(handles,params)

9 years ago | 0

| accepted

Question


in GUI , how to make the handles be used in my function?
use global or sth. ? Is there any way? when i create my function , it occurs error: Attempt to reference field of non-struc...

9 years ago | 2 answers | 0

2

answers

Answered
How would I go about separating each of the numerical values from this string, and create a named variable from each?
Str = 'Average 0: ASM=5, DEP=34m, AV=652632.44'; rcell=strsplit(Str,':');s2=rcell{2};rcell2=strsplit(s2,','); Average0=...

9 years ago | 0

Answered
How to export a fourier series in its function form after using the curve-fitting method?
save theta_fit(t) fitdata; load fitdata;

9 years ago | 0

| accepted

Answered
how can I sum 2 or more sine waves into one sine wave?
result = sinwave1 + sinwave2;(make sure they r with same length)

9 years ago | 0

Question


how to denosie the background noise
<</matlabcentral/answers/uploaded_files/28547/4.png>> there r 2 .wav file , one talk with laugh, another is just laugh. how t...

9 years ago | 1 answer | 0

1

answer

Question


how to show minor gridlines?
i have these commands, i think the order of execution may affect showing the grid lines, how to order them or better ways ? ...

10 years ago | 1 answer | 0

1

answer

Question


meaning of axis in wavelet shapes
<</matlabcentral/answers/uploaded_files/20316/s.png>> these are wavelet shapes in matlab help, i do not understand what's ...

10 years ago | 1 answer | 0

1

answer

Question


how to call .m file use exe
i have a bbb.m and bbb.figure, i want to use another tt.m and tt.figure to convert to an exe file, then use this exe file to ca...

10 years ago | 1 answer | 0

1

answer

Question


how to get the index of the same element in a cell
if true Qzonenum=unique(cgroup); for i = 1:length(Qzonenum) globidx=find(cgroup==Qzonenum{i}); end end th...

10 years ago | 1 answer | 0

1

answer

Question


i have a large matrix whose elements is 1 and 0; how to conver each row to decimal ,like bin2dec
i do it like this if true rownum = size(Qbinnum,1); for i = 1:rownum cgroup(i)=bin2dec(num2str(Qbi...

10 years ago | 2 answers | 0

2

answers

Question


1 how to extract cols and rows from a matrix，2，how to find a value the vector close to ,
data size is MxN ,assume only one nan in data i need remaining part of data , if true [nanrows,nancols]=find(isnan(...

10 years ago | 2 answers | 0

2

answers

Answered
how to compare 2 vectors with same size , but columns is not always the same
i got it , if true training = rand(rownum,n); origpoint= [a1,a2,...,an]; for i = 1:rownum Qzone(i,:)=traini...

10 years ago | 0

| accepted

Question


how to compare 2 vectors with same size , but columns is not always the same
foreach element if a> b, set to 1;if a<=b ,0 if true training = rand(rownum,n); origpoint= [a1,a2]; for i = 1:rownum...

10 years ago | 1 answer | 0

1

answer

Question


do gaussian filtering to an image ,but it shows dark
L00 ,L01 can show ,but L02,L03.L04 seems dark,what's wrong? function sift_01() clear; %contruct scale space I = ...

10 years ago | 1 answer | 0

1

answer

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