Hi Alexandra,
The resample function doesnt allow p*q to be > 2^31 = 2147483648. Because of the error message from the function upfirdn not allowing p*q to be > intmax('int32').
In the resample function it seems you have assigned your p value to be to be double the length of length_resample = 93001*2 = 186002. And your q value to be length(tmp_signal) = 46517*2 (due to the flip and concatenation) = 93034. Therefore your p*q = 17304510068.
My first guess would have been to simplify the fraction of p and q by halving the denominator and numerator.BUT in its simplest form p/q = (186002/2)/(93034/2) = 93001/46517. Giving your p*q = 4326127517 > 2^31.Unfortunately you cant fix this with a decimal point either as p and q are required to be poistive integers.
There are 2 options in my opinion.
1. You could estimate the value of upsample ratio p/q to be 2. Therefore making p = 2 and q = 1.(You can choose a more accurate ratio if you'd like as long as p*q is not > 2^31.)
2.If accuracy of the sampling time is a big issue, cut your data into smaller arrays and resample.
Kind Regards!
