Adafruit CircuitPython 6.2.0 on 2021-04-05; Adafruit CLUE nRF52840 Express with nRF52840
>>> import ulab
>>> import ulab.numerical
>>> import ulab.filter
>>> data = ulab.ones(10000)
>>> fir_taps = ulab.array([0.15, 0.2, 0.3, 0.2, 0.15])
>>> filtered_data = ulab.filter.convolve(data, fir_taps)[6:-6]
>>> ulab.numerical.sum(filtered_data)
9992.0
>>> len(filtered_data)
9992
>>> a = []  ### append to an array to write and use up free memory
>>> for idx in range(1_000_000):
...     a.append("AYMABTU")
...
...
...
Traceback (most recent call last):
  File "<stdin>", line 2, in <module>
MemoryError: memory allocation failed, allocating 131072 bytes
>>> del a
>>> ulab.numerical.sum(filtered_data)  ### no longer 9992.0 !!
9882.01
>>> ulab.numerical.sum(data)  ### although this one is ok
10000.0
>>> filtered_data[0:10]
array([2.98023e-08, 0.0, 1.19209e-07, 0.0, -6.61744e-24, 0.0, -2.64698e-23, 0.0, 1.70141e+38, 0.0], dtype=float32)