[Scripts] Remove fixed seed for adding noise

[anteju]

What does this PR do ?

This PR removes a fixed value of seed when adding noise examples.
With a fixed seed, each worker will select the same noise file.
If required, fixed seed can be set from CLI.

Collection: Scripts

Changelog

• Changed default seed from 42 to None

Usage

If necessary, the original behavior can be reproduced using

python add_noisy.py ... --seed 42

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• New Feature
• Bugfix
• Documentation

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Additional Information

• Related to # (issue)

[KunalDhawan]

LGTM, thanks!

[github-actions]

beep boop 🤖: 🙏 The following files have warnings. In case you are familiar with these, please try helping us to improve the code base.

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Your code was analyzed with PyLint. The following annotations have been identified:

************* Module add_noise
scripts/dataset_processing/add_noise.py:42:0: C0116: Missing function or method docstring (missing-function-docstring)
scripts/dataset_processing/add_noise.py:46:0: C0116: Missing function or method docstring (missing-function-docstring)
scripts/dataset_processing/add_noise.py:76:0: C0116: Missing function or method docstring (missing-function-docstring)
scripts/dataset_processing/add_noise.py:114:0: C0116: Missing function or method docstring (missing-function-docstring)
scripts/dataset_processing/add_noise.py:131:0: C0116: Missing function or method docstring (missing-function-docstring)
scripts/dataset_processing/add_noise.py:28:0: W0611: Unused import random (unused-import)

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Your code has been rated at 9.37/10

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Thank you for improving NeMo's documentation!