ResourceObject["Audio Cats and Dogs"];{dogDuration, catDuration} = Values@Normal[ GroupBy[ResourceData["Audio Cats and Dogs"], "Label"][All, Mean@*Duration, "Audio"]];SeedRandom[42];classLength=93;{catTrain,catTest}=TakeDrop[RandomSample[ResourceData["Audio Cats and Dogs"][Select[#Label==="cat"&]]],Round[classLength*dogDuration/catDuration]];{dogTrain,dogTest}=TakeDrop[RandomSample[ResourceData["Audio Cats and Dogs"][Select[#Label==="dog"&]]],classLength];balancedTrain = RandomSample[Join[catTrain, dogTrain]];SeedRandom[42];catTestex=RandomSample[catTest,10];balancedTest = RandomSample[Join[dogTest, catTestex]];