robust softmask

[bmcfee]

Implements #356

To-do:

• Revise hpss to use this function after merging Harmonic-Percussive-Residual Source Separation  #304

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This change is

[bmcfee]

Reviewed 5 of 5 files at r1.
Review status: all files reviewed at latest revision, 1 unresolved discussion.

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librosa/util/utils.py, line 1445 [r1] (raw file):

    else:
        # Otherwise, compute the hard mask
        mask = X > X_ref

Note: this isn't symmetric in the arguments, since elements with equal energy in both inputs will receive mask=0; that is, ties are always broken in favor of the reference (for hard-masking).

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Comments from Reviewable

[bmcfee]

Review status: all files reviewed at latest revision, 1 unresolved discussion.

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librosa/util/utils.py, line 1445 [r1] (raw file):

Previously, bmcfee (Brian McFee) wrote…

Note: this isn't symmetric in the arguments, since elements with equal energy in both inputs will receive mask=0; that is, ties are always broken in favor of the reference (for hard-masking).

Done.

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Comments from Reviewable

[bmcfee]

Reviewed 2 of 2 files at r2.
Review status: all files reviewed at latest revision, all discussions resolved.

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Comments from Reviewable