room shaker

The Room Shaker is a cost-optimized real-time DSP compatible with any line-level audio signals and primarily designed for use with home theater subwoofers. It features six cascaded biquad stages to yield up to a 12th order filter. Boosting low frequency content to add rumble to your home theater is as simple as uploading your desired PEQs or using the included Super Bass mode. Don’t leave performance on the table - get the most out of your subwoofers! The Room Shaker features:

• 480 MHz Cortex-M7 CPU with DSP
• 48 kHz, 24 bit ADC and DAC
• 2 independent inputs and outputs
• USB-C interface
• Software to upload customer filters (open source!)
• Designed, assembled, and tested by hand in the USA

The Room Shaker is NOT intended to be used with REW and does not include a microphone input. It is intended to be used with pre-determined biquad filters, which may come from BEQDesigner, the Biquad Cookbook, or any other source!

Download the latest Room Shaker software

1) Visit the Software Download tab for instructions on how to download the application software. This software is used to upload filter parameters to the Room Shaker.

Obtain biquad filter parameters

1) In general, biquad filter parameters may come from BEQDesigner or pre-existing BEQ curves that utilize four or less cascaded biquads. There is a fantastic guide on how to create a custom Bass EQ filter on AVSForum.

2) If you're confident in your math abilities, you can create your own filter using the BiQuad Designer or the Biquad Cookbook. All biquad filters are compatible with the Room Shaker.

3) Alternatively, use the built-in Super Bass Mode to generate the filters necessary to give a 12 dB boost below 50Hz. You'll see this option in the Room Shaker software!

Plug in the Room Shaker

Coming soon!

Connect to the Room Shaker via USB

Coming soon!

Upload filter parameters

Coming soon!

Run a test by playing your favorite action movie!

Coming soon!

To get started uploading custom filters to a Room Shaker device, download the latest Room Shaker by following the instructions below:

The Room Shaker software is only available for Windows at this time. If you require MacOS or Linux support, please contact us via email (or, run the application from the Python source code in the linked repository!).

1) Visit https://github.com/nblanchardaz/roomshaker/releases/latest

2) Click the 'Assets' option.

3) Click 'roomshaker.exe' to download the Room Shaker executable file.

4) Go to the downloads folder on your PC. Double click 'roomshaker.exe' to launch it.

5) Windows will probably create a pop-up dialog box that says 'Windows protected your PC'. This is because Windows has default protections against running external .exe files.

6) Click on 'More Info'.

7) Click 'Run Anyway'.

8) The Room Shaker software should then launch on your PC!

Are there any risks involved with using the Room Shaker?
Yes, there are risks involved with using the Room Shaker. If attached to a low or middle tier subwoofer that struggles to play tones under 30 Hz (or even under 20 Hz), there is a very real possibility of damaging the subwoofer amplifier, driver, or both. The Room Shaker is capable of amplifying frequency content as low as 1 Hz, and if the subwoofer is not capable of playing that low, damage can occur, especially at loud listening levels.

Where do I get filter parameters to upload to the Room Shaker?
In general, biquad filter parameters may come from BEQDesigner or pre-existing BEQ curves that utilize four or less cascaded biquads. There is a fantastic guide on how to create a custom Bass EQ filter on AVSForum. If you're confident in your math abilities, you can create your own filter using the BiQuad Designer or the Biquad Cookbook. Alternatively, use the built-in Super Bass Mode to generate the filters necessary to give a 12 dB boost below 50Hz. You'll see this option in the Room Shaker software!

How do I flash a new firmware image onto the Room Shaker?
You won't need to. But, if you want to, firmware may be flashed to the embedded STM32H743 SoC by utilizing an STLINK-V3MINIE programmer connected to the 14-pin header J3. Be careful to connect the cable with the correct polarity; the GND pin is marked on the silkscreen for connector J3.