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.
Note: The reSpeaker 2-Mics Pi HAT has been upgraded to version 2.0. The codec chip has been replaced from WM8960 to TLV320AIC3104, enabling support for Raspberry Pi 5 and expanding the sampling rate range from 8 kHz to 96 kHz.
- 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)
- TLV320AIC3104 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
The reSpeaker 2-Mics Pi HAT is the voice user interface for Raspberry Pi Series, which has been equipped 2 analogue microphones and TLV320AIC3104 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.
Specification |
Details |
MIC |
2 analog microphones |
LED |
3 APA102 RGB LEDs |
Raspberry Pi 40-Pin Headers | Support Raspberry Pi5, Raspberry Pi Zero, Raspberry Pi 1B+/2B/3B/3B+/4B |
TLV320AIC3104 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 |
- Voice Interaction Learning
- Secondary software Development
- Voice-based remote control cars
- Reviews
- Questions
AustraliaGreat little array mic
Perfect for an offline and private voice assistant project
Australiare speaker 2
The re speaker 2 was a great little board for capturing voice commands and delivering the sound through the on board 3.5 jack. Simple to install and setup and worked better than a different Phat i tried.Paktronics are now my new favourite electronics supplier, they were quick and easy to deal with
AustraliaReSpeaker 2-Mics Pi HAT
I was impressed by the overall appearance and finish of the board, it is well made, good soldering and very compact. I am having some issues getting it to work correctly with Google Assistant SDK, however I do not believe this to be an issue with the board, as it works perfectly when testing with aplay / arecord. Seeed support have been responsive via email, and also on their github with the drivers, however time will tell if this is a good choice for google assistant!
Shipping rates Australia wide and New Zealand
FAQ:
- How do I estimate shipping for my order?
- Add products in the shopping cart and head to the checkout page to estimate the shipping.
Dispatch time
Unless expressly agreed otherwise with you, we will not commence delivery of an order until we have received cleared payment of the purchase price in full.
All orders placed before 11 am AEST (Monday to Friday) will ordinarily be processed on the same day.
We will endeavour to ship the Products by the applicable time indicated on the website, but all times are indicative only. All shipping times are dispatch times only, and actual delivery dates will depend on the shipping method chosen, delivery address and delivery service provider.
Note- Please make a note during purchase if you require any item urgently. However we cannot guarantee that we will be able to comply with any request.
*Go to Australia post delivery time calculation to get various Australia post service in your area please use our shipping postcode Thomastown, 3074 as the "from" address - https://auspost.com.au/parcels-mail/delivery-times.html?ilink=tools-open-deliv-times.
We ship all products throughout mainland Australia, Tasmania and New Zealand - Including Darwin, Melbourne, Sydney, Tasmania, Adelaide, Brisbane, Perth, all metro and regional areas but do not deliver to areas in Australia where the Australia Post delivery network is not available.
Check Express shipping delivery coverage area at - http://auspost.com.au/parcels-mail/delivery-areas.html
Receipt of deliveries
Deliveries to post office boxes are not permitted where delivery is by courier. If delivery is by courier and nobody is available at the delivery address to accept delivery when delivery is attempted then the courier may either:
- leave the relevant parcel at the unattended address (the courier will do so if specified in your delivery requirements); or
- re-attempt delivery at a later time or date, in which case we may charge you an additional re-delivery fee.
Note that if a delivery is left unattended at the shipping address and is subsequently stolen then the theft is your responsibility, not ours.
Payment & Security
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.