Microphones play a very important role on the performance of Wakeword Detection and Speech Recognition engines.
In this section we list the microphones that we think are going to suit you best to build a Voice Assistant at home.
The Respeaker 2 provides you with 2 microphones, that work up to 3 meters distance from the source. It has 3 LEDS and a button that you can configure and play with. It also offers two different interfaces to output audio: the 3.5mm Audio Jack and the JST2.0 Speaker Out.
At Snips, we have had a very good experience with this affordable microphone and it is our choice for the makers kit.
The big brother of the Respeaker 2 Mics Pi HAT is the Respeaker 4, which provides four microphone and makes it even a more powerful choice to enhance your voice assisted projects. Moreover, it has a 12 LED ring that you can configure to respond to VAD (Voice Activity Detection), and also highlight the estimated direction the voice is coming from.
The ReSpeaker Mic Array 2.0 is an upgraded version based on a XMOS’s XVF-3000. This new chipset includes multiple voice recognition algorithms to assist in performance. This far-field voice capture board has 4 microphones and 12 programmable RGB LED indicators which also highlight the estimated direction the voice is coming from.
Alternatively you can do the installation by yourself as follows:
$ git clone https://github.com/respeaker/seeed-voicecard.git$ cd seeed-voicecard$ sudo ./install.sh$ sudo reboot