Q: In this task, you are given a question and a context passage. You have to answer the question based on the given passage.
When are the samples transformed?, Context: During encoding, 576 time-domain samples are taken and are transformed to 576 frequency-domain samples.[clarification needed] If there is a transient, 192 samples are taken instead of 576. This is done to limit the temporal spread of quantization noise accompanying the transient. (See psychoacoustics.)
A:
During encoding