Got error in resample function

I am a beginner of Matlab and I was trying to resample y by this resample function

but i got an error: " Incorrect number or types of inputs or outputs for function resample. "

please tell me what is the problem if you know. thanks a lot.

load handel.mat
y = y(:);        
Fs = 8192; 
fc = 2e5; 
Fs_new = ceil( (Fs/2 + fc) / Fs * 2 ) * Fs;
y_resampled = resample(y,Fs_new,Fs);

[Stephen23]

It works here:

load handel.mat
y  = y(:);       
Fs = 8192; 
fc = 2e5; 
Fs_new = ceil( (Fs/2 + fc) / Fs * 2 ) * Fs;
y_resampled = resample(y,Fs_new,Fs)

y_resampled = 3655650×1

0.0000 0.0004 0.0009 0.0013 0.0017 0.0022 0.0026 0.0031 0.0035 0.0039

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I am guessing that you are calling another RESAMPLE function. Please show us the complete output when you call WHICH:

which resample -all

/MATLAB/toolbox/signal/signal/resample.m
/MATLAB/toolbox/matlab/timeseries/@timeseries/resample.m    % timeseries method
/MATLAB/toolbox/matlab/timeseries/@tscollection/resample.m  % tscollection method
/MATLAB/toolbox/ident/ident/@iddata/resample.m              % iddata method
/MATLAB/toolbox/signal/gpu/@gpuArray/resample.m             % gpuArray method
/MATLAB/toolbox/simbio/simbio/@SimData/resample.m           % SimData method

[Yijin]

Thanks for your kind help. Here is the output when I call WHICH:

D:\matlab_R2024\toolbox\matlab\timeseries\@tscollection\resample.m % tscollection method

D:\matlab_R2024\toolbox\matlab\timeseries\@timeseries\resample.m % timeseries method

[Stephen23]

Do you have the Signal Processing Toolbox installed and a valid license for it?

[Image Analyst]

Set a breakpoint at that line and step into resample to further investigate.

Debugging in MATLAB | Doug's MATLAB Video Tutorials

[Yijin]

problem solved. I forgot to install toolbox, thanks a lot

Answer 1

[Star Strider]

An alternative approach could be to creeate a timetable and then use the retime function —

load handel.mat
y = y(:)

y = 73113×1

0 -0.0062 -0.0750 -0.0312 0.0062 0.0381 0.0189 -0.0250 -0.0312 -0.0750

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Fs = 8192; 
fc = 2e5;
t = linspace(0, numel(y)-1, numel(y)).'/Fs;                     % Create Time Vector
Fs_new = ceil( (Fs/2 + fc) / Fs * 2 ) * Fs

Fs_new = 409600

% y_resampled = resample(y,Fs_new,Fs);
ytt = timetable(seconds(t), y)                                  % Original ‘timetable’

ytt = 73113x1 timetable
         Time             y     
    ______________    __________

    0 sec                      0
    0.00012207 sec    -0.0061568
    0.00024414 sec     -0.075036
    0.00036621 sec     -0.031169
    0.00048828 sec     0.0061568
    0.00061035 sec      0.038095
    0.00073242 sec      0.018855
    0.00085449 sec     -0.025012
    0.00097656 sec     -0.031169
    0.0010986 sec      -0.075036
    0.0012207 sec       -0.12583
    0.0013428 sec        -0.1443
    0.0014648 sec       -0.18124
    0.0015869 sec       -0.19048
    0.001709 sec       -0.075036
    0.0018311 sec      -0.012698

yttrs = retime(ytt, 'regular', 'linear', SampleRate=Fs_new)     % Resulting ‘timetable’ After Using ‘retime’

yttrs = 3655601x1 timetable
         Time              y     
    ______________    ___________

    0 sec                       0
    2.4414e-06 sec    -0.00012314
    4.8828e-06 sec    -0.00024627
    7.3242e-06 sec    -0.00036941
    9.7656e-06 sec    -0.00049254
    1.2207e-05 sec    -0.00061568
    1.4648e-05 sec    -0.00073882
    1.709e-05 sec     -0.00086195
    1.9531e-05 sec    -0.00098509
    2.1973e-05 sec     -0.0011082
    2.4414e-05 sec     -0.0012314
    2.6855e-05 sec     -0.0013545
    2.9297e-05 sec     -0.0014776
    3.1738e-05 sec     -0.0016008
    3.418e-05 sec      -0.0017239
    3.6621e-05 sec      -0.001847

These are part of core MATLAB, so you should have them.

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