Emu: Adding Formants to the Database

How to add a formant track to an existing Emu Database:

• First load the db

  require(emuR)
  Name_of_DB <- load_emuDB("path to your database")
  

• Then we need to edit the arguments to the formant function

To add Formant files we use the forest function that is found in the wrassp package. We can then find the parameters using the formals() function. This will load all of the available parameters that can be changed.

fm.params <- formals(wrassp::forest)

• Then add the ssff track and save it to the database

  add_ssffTrackDefinition(emuDBhandle = Name_of_DB, # change as needed
                                 name = "FORMANTS", # This needs to be left as FORMANTS
                           columnName = "fm",
                        fileExtension = "fms")
  

Making Tracks visible in the Emu WebApp

In order to make the F0 track visible once it has been added to the database we need to edit the perspectives.

list_perspectives(test_DB)  # Check the perspectives already in the db (usually just `default`).

We will add the signals to the default perspective:

set_signalCanvasesOrder(emuDBhandle = Name_of_DB, # change as needed
		    perspectiveName = "default",
          		      order = c("OSCI","SPEC"))

We then set the level (annotation tier) that we would like to include with the perspective (I have just added a single tier/level called etic in the example below).

set_levelCanvasesOrder(emuDBhandle = Name_of_DB, 
		   perspectiveName = "default", 
		             order = c("level1")) # this will be a level already in the database

Serve the Database

Now we can serve the database so we can check the new perspective;

serve(Name_of_DB)