Efficient Audio or Signal Processing | Dataford Interview Questions

Write a function to process audio buffers or signal data efficiently.

Given a list of audio buffers and a positive window size, flatten the buffers while preserving each sample's source buffer. For windows contained within one buffer, return the root-mean-square amplitude. For windows crossing a buffer boundary, return the mean absolute amplitude. Return results in window order, rounded to six decimal places.

Signature: process_audio_buffers(buffers, window_size)

Input buffers is a list of lists of numbers. Return a list of numbers, or an empty list when the window is invalid or larger than the flattened signal.

Constraints

0 <= len(buffers) <= 10^4
0 <= len(buffers[i]) <= 10^5
The total number of samples is at most 10^6
-10^6 <= buffers[i][j] <= 10^6
window_size is an integer
Return values are rounded to six decimal places

Function Signature

def process_audio_buffers(buffers, window_size):

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