Most sounds and TTS announcements can be performed with Big Talker 2.0, RemindR, or your favorite app. Both work with TTS (Lannouncer) and speaker devices.
To get a chime code @#ALARM=CHIME rather than text
Sure, but the original post in the thread was about spoken phrase alerts.
As of the fall of 2018, if you live in the US or the UK hands-down the easiest way to do custom phrase alerts is just to get a $40 Amazon echo dot and use the official echo routines (not smartthings routines).
You can make the echo say anything you want it to based on a smartthings event, or play a sound file, anything from a chime to a siren to a lion roaring. It’s not as loud as a smoke alarm, but it’s about as loud as a doorbell. And if you have multiple echo devices, you can choose exactly which ones you want to play the sound. And you can have different sounds for different events. It’s a really nice feature.