---
title: synthManufacturer
framework: applicationservices
role: symbol
role_heading: Instance Property
path: applicationservices/speechversioninfo/1458822-synthmanufacturer
---

# synthManufacturer

A unique identification of a synthesizer engine. If you develop synthesizers, then you should register a different four-character code for each synthesizer you develop with Developer Technical Support. The creatorID field of the voice specification structure and the synthCreator field of a speech extension data structure should each be set to the value stored in this field for the desired synthesizer.

## Declaration

```swift
var synthManufacturer: OSType
```