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Nuvoton Technology Corporation and Beijing Twirling Inc. have jointly launched a low power single-chip voice module for immersive conference application

Hsinchu, Taiwan - 2020/07/02 - Nuvoton Technology Corporation today announced that Beijing Twirling Inc. has launched a single-chip low-power voice module for immersive conferences application based on the Nuvoton ISD94100 series device. The combination of ISD94100 low power consumption feature and the Beijing Twirling algorithm effectively ensure smooth and intelligent voice interaction capabilities, while reducing power consumption and production costs. The module is an ideal fit for battery-powered devices, and the application can be extended to various small portable conference products such as Bluetooth speakers and Bluetooth headsets, further enriching the IoT category and addressing real user scenarios to provide a more efficient and convenient user experience.

Nuvoton ISD94100 series features:

  • Arm Cortex®-M4F, core speed up to 200MHz, 512KB flash memory and 192KB SRAM
  • PWM supports 6 channels with 16-bit resolution
  • Support USB FS 1.1 controller, compatible with USB FS 2.0
  • VAD for low power voice operation
  • Support 4 Digital MICs

This low-power voice module supports easy expansion to work other modules, for example, it can be used with Bluetooth and WiFi module and can be implemented with multiple data communication protocols through interfaces such as USB. Covering a variety of application scenarios such as smart home and smart car, to meet the needs of different fields.

Nuvoton Technology is a well-known global enterprise, which has always been committed to bringing more value to the Smart Home Audio products of its customers. Beijing Twirling Inc., a leading enterprise in the audio industry that integrates acoustic and artificial intelligence technology, has jointly launched a single-chip & low-power voice module for immersive conferences application; this module enables everyone’s voice to be captured clearly and accurately to be more vivid and interactive, while eliminating the interference of background noise, ensuring everyone can easily share and communicate with high voice quality content.

 Beijing Twirling Inc. single-chip immersive conference module solution

Dimension (Diameter 76.2mm)

Beijing Twirling Inc. single-chip immersive conference module solution

The immersive voice module launched by Nuvoton Technology and Beijing Twirling Inc. supports three microphone array Ambisonic sound field acquisition. Ambisonic technology is widely used in immersive audio in recent years. It is the standard audio in VR / AR; it is also gradually supported in broadcasting, filming, and television industries, such as the MPEG-H agreement launched by the global standards organization. Some standards also have been defined in China Broadcasting System. Ambisonic has a powerful mode conversion function, which can simultaneously support traditional mono and dual-channel stereo sound transmission methods and can flexibly support all mainstream immersive audio formats such as 5.1 and 7.1 on the decoding side.


The core features of Beijing Twirling Inc. immersive audio modules provide the leading algorithm module solutions necessary for conference communication such as noise reduction and echo cancellation.

  • Three microphones and two speaker outputs
  • Ambisonic technology in sound gathering
  • Support steady-state and unsteady-state noise suppression
  • Support single channel acoustic echo cancellation
  • Dynamic Blind Source Separation, beamforming
  • Automatic gain control to support far and near field voice capture
  • Support common heart-shaped, 8-shaped and other directional modes
  • Support USB interface

Besides, Beijing Twirling Inc. also launched a more integrated mini microphone array voice pickup module, with an extremely compact microphone layout and USB interface, which provides an excellent Turnkey for mini microphone voice devices such as mobile phone expansion voice pickup accessories. 

  • 4 x MEMS MIC
  • The radius of the array is only 6.5mm
  • Ambisonic technology in sound gathering
  • Includes TwirlingVoice speech processing algorithms: automatic gain control, noise suppression, beamforming, acoustic source allocation, etc.
  • Support horizontal 2D conventional audio processing and vertical 3D spotlight pickup mode, suitable for mobile live broadcast scenarios
  • Support voice wake up
  • Support common heart-shaped, 8-shaped and other directional modes
  • USB interface supported

Beijing Twirling Inc. mini quad-MIC voice module

Dimension (40mm*20mm)

Beijing Twirling Inc. mini quad-MIC voice module


About Nuvoton Technology
Nuvoton Technology Corporation (NTC) was founded to bring innovative semiconductor solutions to the market. NTC was spun-off as a Winbond Electronics affiliate in July 2008 and went public in September 2010 on the Taiwan Stock Exchange (TSE). Nuvoton Technology focuses on the developments of microcontroller, microprocessor, smart home and cloud security IC and has strong market share in Industrial, Consumer and Computer markets. Nuvoton owns a wafer fab, featuring customized processes for analog and power products. Besides in-house IC products, the wafer fab also provides part of its capacity for foundry services. Nuvoton Technology provides products with a high performance/cost ratio for its customers by leveraging flexible technology, advanced design capability, and integration of digital and analog technologies. Nuvoton values long term relationships with its partners and customers and is dedicated to continuous innovation of its products, processes, and services. The company has established subsidiaries in the USA, China, Israel, and India to strengthen regional customer support and global management. For more information, please visit

*Note: Nuvoton and NuMicro are registered trademarks of Nuvoton Technology Corporation. All other trademarks and copyrights mentioned herein are the property of their respective owners.


Product Contact

Mike Luh

Sr. Director of Product Marketing

Smart Home Audio Group

Nuvoton Technology Corporation


Tel: +886-3-5770066 ext. 61607


News Contact

Carol Chang

Nuvoton Technology Corporation


Tel: +886-3-5770066 ext. 23123


About Beijing Twirling Inc.

Beijing Twirling Inc. is committed to becoming "Dolby of China" and is a leading artificial intelligence technology & innovation company in China. With years of accumulation of core audio technology algorithms and related patents, artificial intelligence technology is combined with traditional audio technology to provide industry users with mature, stable, and reliable artificial intelligence products and commercial value at scenarios through the Internet of Things platform and edge computing architecture.

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