I am currently trying to upsample some signals in Simulink using the FIR interpolation block.
To test such functionnalities, I used the `ex_polyphaseinterp` example provided in the documentation.
According to the same documentation, with the settings used in the example, the interpolated signal should have a 3 sample delay (as the upsample factor is of 3).
However, when checking the scope for the signals, a much higher delay is observed as can be seen below
Can anyone clarify the information in the documentation and / or point errors in my reasoning ?