Is it possible to use the speech recognition API to create characters?

I am responsible for aibo developer support.

It seems that you can only recognize short registered commands now, but is there any ability to recognize and convert aibo speech into characters?

At this time, we do not publish an API that informs aibo of the recognition results of the speech.
To make aibo respond to any word, use the recognition word registration.

Register aibo developer site recognition word
https://developer.aibo.com/jp/docs#%E8%AA%8D%E8%AD%98%E3%83%AF%E3%83%BC%E3%83%89%E3%81%AE%E7%99%BB%E9%8C%B2

Register recognition words
You can register your favorite words as words that aibo responds to (recognition words).Registered words can be used in event notifications or retrieved in APIs that retrieve the results of aibo-responsive speech recognition as well as other recognition words.

Thank you for your continued support for the aibo developer program.
aibo developer support team