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Small green circuit board with microphone and Grove connector

Seeed Studio

Seeed Studio Grove Speech Recognizer ISD9160

SKU CH-CBHD-Z5CST

A voice-control module with an omni-directional microphone that recognises 22 spoken commands using a Cortex-M0 core running at 50 MHz

  • TypeSensors
  • Powerful Cortex-M0 core at 50 MHz ensures high recognition accuracy
  • Omni-directional microphone captures voice equally from any direction
  • Recognises 22 voice commands including start and stop
  • Grove unified socket enables plug-and-play integration
  • Low-power Nuvoton ISD9160 SoC with 32-bit MCU for voice control

Voice-Control Board for Embedded Projects

The Seeed Studio Grove Speech Recognizer ISD9160 is a compact sensor module built around the Nuvoton ISD9160 system-on-chip. It integrates a Cortex-M0 core running at up to 50 MHz, an omni-directional microphone, SPI flash, a speaker connector and a status LED. The board is designed for makers and engineers adding voice-command features to smart-home devices, toys or robots.

Suits Prototypes Needing Fixed Command Sets

This module recognises 22 predefined voice entries such as start, stop and play music, returning a value each time a command is detected. It fits projects that can work with a closed vocabulary and do not require cloud connectivity or custom wake-word training. Builders who need continuous dictation, large vocabularies or natural-language understanding should look at a different solution.

Plugs into Grove Ecosystem for Quick Integration

The unified Grove socket provides a plug-and-play link to compatible microcontroller boards, removing the need for custom wiring or level-shifting. On-board SPI flash stores firmware and audio data, while the speaker connector enables local audio feedback. The board frees the host processor from audio front-end tasks and runs from the host’s logic-level supply.

Highlights

  • Powerful Cortex-M0 core at 50 MHz ensures high recognition accuracy
  • Omni-directional microphone captures voice equally from any direction
  • Recognises 22 voice commands including start and stop
  • Grove unified socket enables plug-and-play integration
  • Low-power Nuvoton ISD9160 SoC with 32-bit MCU for voice control

Specifications

TypeSensors

Questions about this item

Which controller board or development platform provides the Grove unified socket this recognizer plugs into?

Any board with a standard Grove connector — Arduino, Raspberry Pi, micro:bit or similar — supplies power and the serial link the ISD9160 needs.

Will the module’s 22 built-in commands still respond if I keep using an older 8-bit microcontroller for the rest of my project?

Yes. Recognition runs entirely on the on-board Cortex-M0 at 50 MHz, so the external host only receives the returned command value over the Grove UART.

How can I confirm the ISD9160 has recognised a spoken command after wiring it up?

The on-board LED flashes each time a valid entry is detected, and the host receives a unique numeric code for each of the 22 phrases.

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