Output .ctm of Speech Data Simulator has channel and spk_id swapped

[popcornell]

NeMo/nemo/collections/asr/data/data_simulation.py

Line 1057 in 2cc0942

text = f"{session_name} {speaker_id} {align1} {align2} {word} 0\n"

But according to https://web.archive.org/web/20170119114252/http://www.itl.nist.gov/iad/mig/tests/rt/2009/docs/rt09-meeting-eval-plan-v2.pdf it should be:

<SOURCE><SP><CHANNEL><SP> <BEG-TIME><SP><DURATION><SP><TOKEN><SP>
<CONF><SP><TYPE><SP><SPEAKER><NEWLINE>

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[tango4j]

Hi, @popcornell .
This is intended since we were creating dataset where all channels share the same word alignment
so we used channel slot as speaker.
Now that we are trying to let the public users use the data simulator freely, it needs to be updated to have consistency with the CTM convention in RT09 document.
I will keep this open until this gets fixed.

[popcornell]

Hi Taejin, thanks for the reply.
I like a lot the data simulator, it is very fast and really helpful, I used it in a recent work.

I can actually fix this it is pretty easy, I have already done so locally.
I needed consistency with RT09 convention because I was using lhotse https://github.com/lhotse-speech/lhotse for dataloading and having .ctm was quite handy for loading in the manifests also the word alignments.

This is intended since we were creating dataset where all channels share the same word alignment
so we used channel slot as speaker.

There is a channel slot in the .ctm convention but IDK if it is what you need.

[tango4j]

Oh I see.
This definitely needs to be updated ASAP.
Also Piotr Zelasko [email protected] joined NVIDIA NeMo team, so
I think I could let him go through the PR to make sure the compatibility with lhotse.

[github-actions]

This issue is stale because it has been open for 30 days with no activity. Remove stale label or comment or this will be closed in 7 days.

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[popcornell]

I have a PR that addresses this now.