You can turn any Text layer into a Speech audio layer in the Creative Editor.

Speech layer options include several different narrators and Playback speed options to best showcase your product or service:

• Language acts as a filter for narrator options. When you select a language, you see only the narrators who match your selection.
• Narrator defines the narrator voice. You can either select a narrator from the list, or use a feed as input.
• Speed defines the speed of the narration. This can also be set through a feed.
• Volume controls the volume level of the speech layer.

Create a speech layer

1. Select the text layer in the Creative Editor.
2. In the panel on the right, click the Text-to-speech tab.
3. Set the speech options.
4. To preview your audio layer, click Play.
5. Click Create audio layer.
6. To edit general audio properties like start or end time, continue editing in the same panel. Your changes are saved automatically.

Edit a speech layer

You can edit an existing speech layer's general audio properties as well as the language, narrator and speed properties of the speech layer. These changes cause the layer to be re-generated and the  changes are applied immediately.

1. Select the text layer in the Creative Editor.
2. Edit the audio and speech options.
3. To preview your audio layer, click the play button.

Create a speech layer from a feed

You can use a feed to generate variations with different narrators. When using a feed, there is no need to set the Language option. (Technically, selecting a language merely filters the list of available narrators.)

1. Select the text layer in the Creative Editor.
2. In the panel on the right, click the Text-to-speech tab.
3. On the Narrator drop-down menu, select Content from feed column.
4. In the Feed column field, specify the source of the Narrator content.
5. On the Speed drop-down menu, select Content from feed column.
6. In the Feed column field, specify the source of the Speed content.
7. To preview your audio layer, click Play.
8. Click Create audio layer.
9. To edit general audio properties like start or end time, continue editing in the same panel. Your changes are saved automatically.