How to read datastore from specified position?

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neal paze
neal paze 2021-9-6
编辑： jibrahim 2021-9-9
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."

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回答（1 个）

jibrahim
jibrahim 2021-9-7
编辑：jibrahim 2021-9-9
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

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