How to read datastore from specified position?

In official documents,they have not introuduce how to read datastore from specified position?

For example,I build a audiodatastore with 400 sound files.When I read it,it only begins from the first or last time position.

I want to read from 20 to 40, I use follow code:

adsTest = audioDatastore(fullfile(dataFolder,'test'),'IncludeSubfolders',true);

[cleanAudio,adsTestInfo] = read(adsTest(20:40));

it does not work.It says "Array formation and parentheses-style indexing with objects of class 'audioDatastore' is not allowed. Use objects of class 'audioDatastore' only as scalars or use a cell array."

Answer 1

[jibrahim]

Hi Neal,

Here is one way to read files from a custom position:

adsSub = subset(adsTest,20:40);
allSignals = readall(adsSub); % or call read on adsSub to get one signal at a time

[neal paze]

Thanke you!