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reSpeaker 2-Mics Pi HAT for Raspberry Pi - WM8960 Audio Codec, 2 Analog Microphones, 3 APA102 RGB LEDs, 3.5mm Audio Jack, User Button, attached with NLU software algorithms, VAD,DOA, KWS

SKU
107100001

ReSpeaker 2-Mics Pi HAT is a dual-microphone expansion board for Raspberry Pi designed for AI and voice applications. You can build a more powerful and flexible voice product that integrates Amazon Alexa Voice Service, Google Assistant, and so on.

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PRODUCT DETAILS

The reSpeaker 2-Mics Pi HAT has been equipped with 2 analogue microphones and WM8960 Audio Codec, for high-definition voice capture and process, designed to be the voice user interface for Raspberry Pi Series. Attach with NLU software algorithms, it has the abilities of Voice Activity Detection, Direction of Arrival and Key Word Spotting, widely used in Voice Interaction applications. It is a fine solution for local Neutral Language Understanding.

Feature

  • Voice User Interface for Raspberry Pi Series: Placed by 4 analogue microphones, which come with the Voice Interaction algorithms of VAD(Voice Activity Detection), DOA(Direction of Arrival), KWS(Key Word Spotting)
  • WM8960 Audio Codec: Low power, high-quality stereo Codec designed for portable digital audio applications
  • Controllable Peripherals: Provide 3 programable APA102 RGB LEDs and 1 User Button for attached Speech Recognition usage
  • Easy Assembly: Simply pop up on the Raspberry Pi to use

Description

The reSpeaker 2-Mics Pi HAT is the voice user interface for Raspberry Pi Series, which has been equipped 2 analogue microphones and WM8960 Audio Codec for high-definition voice capture. Attach with NLU software algorithms and noise reduction algorithms, it has the abilities of Voice Activity Detection, Direction of Arrival and Key Word Spotting, widely used in Voice Interaction applications.

How does reSpeaker work?

There are analogue microphones mounted on each corner of the square reSpeaker, to receive audio data around then transmit them to the codec. The codec integrates synchronized ADCs with mic boost amplifier, to deliver valid channel data to the Raspberry Pi/ Pi Zero, where it transits them over I2S ports by standard I2S or PCM format, along with a single port by TDM format.

The NLU algorithms will be applied to the Raspberry Pi once the audio data has arrived. The main functions include Voice Activity Detection(VAD), Direction of Arrival(DOA), and Key Word Spotting(WKS), suitable for various Voice Interaction applications such as voice-based remote control cars, voice user interface, keywords wake up and so on.

Since the audio data transmitted may contain the noise as well, the reSpeaker comes with the functions of Auto Echo Cancellation (AEC), Beamforming, Webrtc Noise Suppression (NS), and Automatic Gain Control (AGC) to reduce noise and perform better audio data to the Raspberry Pi.

Application

  • Voice Interaction Learning
  • Secondary software Development
  • Voice-based remote control cars

Get started with Google Assistant

How to use button to trigger Google Assistant

Specifications

Specification

Details

MIC

2 analog microphones

LED

3 APA102 RGB LEDs

Raspberry Pi 40-Pin Headers

Support Raspberry Pi Zero, Raspberry Pi 1B+/2B/3B/3B+/4B

WM8960 codec

Low power, high quality stereo Codec designed for portable digital audio applications

Software Algorithm

VAD(Voice Activity Detection), DOA(Direction of Arrival) and KWS(Keyword Search)

User button

1 programmable button

Voice Capture Distance

3 meters radius voice capture

Battery

Exclude

Dimensions

65mm x 30mm x 15mm

Weight

G.W 33g

Part List

reSpeaker 4-Mic Array for Raspberry Pi x1

Technical details

Dimensions 65mm x30mm x15mm
Weight G.W 33g
Battery Exclude

Part List

ReSpeaker 2-Mics Pi HAT 1

ECCN/HTS

HSCODE 8518900090
USHSCODE 8517180050
UPC 841454120018
EUHSCODE 8517180000
COO CHINA
EU DoC 1
RoHS 1
UK DoC 1

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REVIEWS

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  1. Product Quality
    100%
    Documentation
    100%
    from order view
    In general I like the Seeed products. They make it easier to tinker. It is hard to rate the shipping with current issues in world etc. as a bit slow but I did know it was it was out of stock up front. This particular shipment I got solely to run through the training / education on the seeed site.
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  2. Product Quality
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    from order view
    happy.
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  3. Product Quality
    100%
    Documentation
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    from order view
    Very nice little device. I wanted it for non-voice DOA, which looks like it'll work, but takes some fiddling as the sample scripts and documentation pertaining to DOA are for the 4/6/8 mic arrays, so if that's your aim then I'd recommend getting one of those instead. I cheaped out and got this one, and it's exactly what I paid for.
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  4. Product Quality
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    from order view
    Delivered on time and worked as expected. great service
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  5. Product Quality
    100%
    Documentation
    100%
    from order view
    This product is awesome. I used it for a Rhasspy satellite with a Pi Zero and a 3D printed box for the speaker, Pi and Respeaker 2-Mics Pi HAT
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