Electronic Component Solutions

Microphone Array ASR-assist Audio Processor

From wearables to smart lighting, voice control is increasingly becoming consumers’ preferred way to interact with electronics. As developers build products of various sizes and designs to meet consumer demand, they often have trouble scaling to meet different Bill of Materials (BOM) and form factor requirements in end applications. Microchip announced that its AcuEdge™ ZLK38AVS Development Kit for Amazon Alexa Voice Service (AVS) now introduces far-field voice pick up and the flexibility to build devices with multiple mic array configurations. The solution reduces BOM costs while addressing the requirements of small-form-factor designs.

Designed for world-class voice front-end audio applications, Microsemi’s new ZL38063 audio processor features the company’s AcuEdge™ technology. This innovative technology is a set of highly-complex and integrated algorithms that significantly improves automatic speech recognition (ASR) for both embedded and cloud-based ASR solutions. The ZL38063 delivers audio enhancements that perform noise reduction and smart automatic gain control (AGC), enabling speech recognition at distance in noisy, real-world conditions.

Hardware Features:

  • DSP with Voice Hardware Accelerators
  • SPI or I2C Slave port for host processor interface
  • General purpose UART port for debug
  • Master SPI port for serial Flash interface
  • Boots from SPI or Flash
  • Flash firmware can be updated from SPI Slave
  • 14 General Purpose Input/Output (GPIO) pins (11 with the 56 pin WLCSP)
  • 2 low power modes controlled by reset

Product brief

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