Raspberry Pi enthusiasts may be interested to know
that hardware manufacturers ReSpeaker have created a new quad microphone
expansion board specifically designed for the range of Pi mini PC systems.
The Raspberry Pi ReSpeaker 4-Microphone HAT is now
available to purchase directly from Seeed priced at US$ 24.90 and allows you to
build more powerful and flexible voice products that integrate to already
available services such as Google Assistant, Amazon Alexa Voice Service and
more.
The 4-Microphone HAT has been based on the AC108
providing highly integrated quad-channel ADC with I2S/TDM output transition for
high definition voice capture, explains ReSpeaker.
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