Audio Labeling Editor

Overview of the Audio Labeling Editor in Ango Hub

Ango Hub provides a labeling editor with which audio files can be annotated.

This article will exclusively go over Ango Hub’s audio labeling interface. Features common to all labeling editors (audio, image, PDF, and text) are instead explained here.

Overview of the Audio Labeling Editor in Ango Hub

Audio Interface Elements

Bottom bar

On the left, playback controls allow you to play, pause, and rewind/forward a couple of seconds.

The Normal dropdown allows you to change the current playback speed.

The zoom slider allows you to change the zoom level.

The slider on the right allows you to set the playback volume.

Top Bar

Click on the "Model Plugins" button to open a list of model-type plugins available in your organization.

If a default preset has been set for the plugin, the button will be clickable, and clicking on it once will run the plugin on the current asset with the default settings.

Clicking on the three dots next to the model name will open the Model Run Dialog, allowing you to customize the plugin's run settings and to run the plugin on the current asset with settings of your choice.

How to Annotate Audio

From the playback buttons on the bottom bar, start and stop playback of the audio file as necessary.

If you get no sound, make sure that:

Your system volume is on
The volume slider on the bottom bar is not all the way to the left
You have selected the right output device on your computer

From the Tools section on the left sidebar, select an Entity labeling tool, marked with an underlined A icon.

Click on the waveform where you’d like the annotation to start. Keep the left mouse button pressed and drag until where you’d like the annotation to end. Release the left mouse button.

You can change the start and end points of the annotation by selecting it with left-click, then dragging on one of the ends. You can drag the entire annotation by, after selecting it, clicking and dragging from the middle of the label.

If the labeling tool has nested questions, right-click on the label and click on the menu that appears to see and answer the nested questions.

If classification questions are present, you may answer them from the Questions panel on the left sidebar.