ARC 2024.12.21.00 (Pro And Runtime)
Change Release Notes
We’re excited to announce the latest update to ARC, packed with improvements to audio processing and speech recognition, ensuring smoother and more customizable performance for your robotics projects.
What’s New?
WaveIn and WaveOut Enhancements:
- Both WaveIn and WaveOut now utilize Function callbacks instead of relying on the UI thread.
- This change reduces dependency on UI message loops, leveraging their own threads for processing.
- While this uses slightly more overhead, it results in a more efficient and reliable system moving forward.
Bing Speech Recognition Update:
- A new option in the configuration menu allows you to enable or disable the playback of the wake word acknowledgment sound.
- Choose whether or not to play a sound when the wake word is detected, giving you greater control over how the system responds.
Log Message for Recording Start:
- Bing Speech Recognition now logs a message whenever recording begins, providing clearer insights into system behavior.
Additional Details
For more details about this release, check out the ARC Release Notes.
As always, we welcome your feedback! Let us know how these updates improve your experience or if you have any suggestions. Thank you for using Synthiam ARC!
ARC Downloads
ARC
FREE- 1 third-party plugin skill per project
- Trial cloud services
- Personal, DIY & education use
- Updated every 6–12 months
ARC
PRO- Use on 2+ PCs simultaneously
- Unlimited robot skills
- Cloud backup & revision history
- Weekly features & bug fixes
- Business use permitted
ARC
RUNTIME- Load & run any ARC project
- Read-only mode
- Unlimited robot skills
- Includes early access fixes & features
- Minimum requirements: Windows 10 or higher, 2 GB RAM, 500 MB free disk space.
- Recommended: Windows 10 or higher, 8 GB RAM, 1 GB free disk space.
- Prices are in USD.
- More about each edition: Download & install guide.
- Latest changes: Release notes.
Compare Editions
| Feature |
ARC
FREE
|
ARC
PRO
|
|---|---|---|
| Get ARC Free | View Plans | |
| Usage | Personal · DIY · Education | Personal · DIY · Education · Business |
| Early access to new features & fixes | — | ✓ |
| Simultaneous microcontroller connections * | 1 | 255 |
| Robot skills * | 20 | Unlimited |
| Skill Store plugins * | 1 | Unlimited |
| Cognitive services usage ** | 10 / day | 6,000 / day |
| Auto-positions gait actions * | 40 | Unlimited |
| Speech recognition phrases * | 10 | Unlimited |
| Camera devices * | 1 | Unlimited |
| Vision resolution | max 320×240 | Unlimited |
| Interface builder * | 2 | Unlimited |
| Cloud project size | — | 128 MB |
| Cloud project revision history | — | ✓ |
| Create Exosphere requests | — | 50 / month |
| Exosphere API access | — | Contact Us |
| Volume license discounts | — | Contact Us |
| Get ARC Free | View Plans |
* Per robot project
** 1,000 per cognitive type: vision recognition, speech recognition, face detection, sentiment, text recognition, emotion detection, azure text to speech
Upgrade to ARC Pro
ARC Pro is your passport to a world of endless possibilities in robot programming, waiting for you to explore.

Woho! Thanks so much! Outstanding update. You all are the best!
I need to report back and tell you that any issue I was having with the last update are resolved. Everything is working nicely now. Thanks so much!
Also, I love the option of not having a Bing Speech wake word sound now. So much better.