F0 SSFF track loaded in emuR but not visible in EMU-webApp

[PlatorGashi]

Hi everyone,

I’m working with an EMU database where .f0 files exist for every bundle, and I’ve added the SSFF track definition:

add_ssffTrackDefinition(
db,
name = "f0",
columnName = "F0",
fileExtension = "f0"
)

list_ssffTrackDefinitions(db) returns:

name columnName fileExtension fileFormat
f0 F0 f0 ssff

The .f0 files are valid SSFF (binary), and I can read them with wrassp::read.AsspDataObj(). Also, get_trackdata() works and returns non-zero F0 values:

summary(f0data_all$T1)
Min 0, Max ~148 Hz

So the F0 data is clearly present and accessible in R.

However, when I run:

serve(db)

and open the EMU-webApp:

I can see waveform and annotations
but no F0 contour is displayed
I also cannot find any option in the UI to enable SSFF tracks

I’ve already tried:

restarting R/session
reloading the browser
re-adding the track definition
verifying bundle names match .f0 filenames

Question:
What could cause SSFF tracks (like F0) to be available via get_trackdata() but not appear in EMU-webApp? Is there something specific required to make SSFF tracks visible in the UI?

Thanks!