EMATViewer
The EMA Tau Viewer application provides a means to examine the tau fit for single and dual movement EMA based articulatory events. The data for each event is held in PlanArt or Double talk data files containing EMA and audio data. The user provides the EMATViewer app with a spreadsheet, each row of which identifies the data files containing an event and the beginning and end time of the event’s location within those files.
The events that are identified in the spreadsheet can be browsed by the user. Along side the audio waveform and audio spectrogram, various views of the EMA data are available for each sensor, such as Z and Y position, PCA, Velocity, Tangential Distance and Acceleration. The start and end points for each movement within the event are calculated, then a fitted tau curve is derived for each movement. The tau curve is overlaid on a number of the EMA data views. An editor is available to examine the tau fit and to optionally adjust the start and end points of the fitted movements. Once a movement has been examined, the start and end points can be saved back to the spreadsheet along with a number of parameters which are detailed in EMATview_columns file below.
Downloading the software
The EMATViewer software is available in the download area
Specification of event data and location in the data spreadsheet
Column names used when outputting parameters in the data spreadsheet
Column headings in the EMATview_columns spreadsheet
| Column Name | The prefix of the name of the column in the data spreadsheet. The prefix will have the abbreviated signal name and the abbreviated sensor name appended, i.e VMVOn_NrTVMin_Unflt_Y_A _pca_TM |
| Short Description | A short description describing the contents of the column |
| Description | A fuller description describing the contents of the column |
| Filtering | Filtering used for the data in the column, possible values are:
|
| Movement | The Movement that the data is derived from, possible values are:
|
Output data column name abbreviations
|
Abbreviation
|
Meaning |
| A | up |
| Acc | acceleration |
| Adj | adjusted |
| Amp | amplitude |
| B | down |
| Cnstnt | constraint |
| Cnt | count |
| Dec | deceleration |
| Diff | difference |
| DPnts | use drop points |
| Err | error |
| Flt | filtered |
| NrPCAMin | near PCA velocity minimum |
| NrTTVOff | minimum tangental velocity near time supplied offset |
| NrTTVOn | minimum tangental velocity near time supplied onset |
| NrTVMin | near tangental velocity minimum |
| Off | offset |
| On | onset |
| Orgl | original |
| Pcnt | percent |
| Pk. | peak |
| Sel | Selected |
| SG | Savitzy-Golay filter |
| SGErr | Savitzy-Golay filter difference Error |
| Strt | Start |
| Sup. | Supplied |
| TAMax | Time Acceleration Maximum |
| TauS | Tau Signal |
| TauSOn | Tau Signal Onset |
| TauSOff | Tau Signal Offset |
| TDiff | Time Difference |
| TDMax | Time Deceleration Maximum |
| TMVOff | Value Velocity Minimum Offset |
| TMVOn | Value Velocity Minimum Onset |
| TOff | Time Offset |
| TOn | Time Onset |
| TTvel | Time Tangental Velocity |
| TV20PC | Time Velocity 20PC |
| TVel | Time Velocity |
| TVMin | Time Velocity Minimum |
| TVOff | Time Velocity Offset |
| TVOn | Time Velocity Onset |
| TVPk | Time Velocity Peak |
| VAvel | Value Absolute Velocity |
| VAMax | Value Acceleration Maximum |
| VDMax | Value Deceleration Maximum |
| Vel | velocity |
| VMVOff | Value Velocity Minimum Offset |
| VMVOn | Value Velocity Minimum Onset |
| VOff | Value Offset |
| VOn | Value Onset |
| VPos | Value Position |
| VTvel | Value Tangental Velocity |
| VV20PC | Value Velocity 20PC |
| VV20pcOff | Value Velocity 20PC Offset |
| VV20pcOn | Value Velocity 20PC Onset |
| VVMin | Value Velocity Minimum |
| VVOff | Value Velocity Offset |
| VVOn | Value Velocity Onset |
| VVPk | Value Velocity Peak |
| Unflt | unfiltered |
Markers
- The EMA signal plots can have markers at movement boundaries and calculated points
- The Audio, LX and spectrogram plots can have markers defined by user supplied points
- PlanArt data can have user supplied displayed in a window aligned with the signal plots
More information regarding the meaning and definition of markers can be found in the marker details section
Signal Axis
When viewed from the front of the subject, the signal orientation used is:
X – Side to side
Y – Front to back
Z – Up down
How To
Setting segment extension times
Information for Setting segment extension times
Creating a subset of results
The Excel output for EMATviewer can contain over 600 columns, If a subset of the data is required, selected columns can be copied to a new spreadsheet with the copycolumns script
