modified: README.md
new file: requirement.txt
new file: scripts_2/README.md
new file: scripts_2/__init__.py
new file: scripts_2/__pycache__/__init__.cpython-310.pyc
new file: scripts_2/__pycache__/signal_utils.cpython-310.pyc
new file: scripts_2/__pycache__/task3_identify.cpython-310.pyc
new file: scripts_2/signal_utils.py
new file: scripts_2/task3_identify.py
new file: scripts_3/README.md
new file: scripts_3/__init__.py
new file: scripts_3/__pycache__/__init__.cpython-310.pyc
new file: scripts_3/__pycache__/task4_predict_freq.cpython-310.pyc
new file: scripts_3/task4_predict_freq.py
