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7. How It Works?
Input:
Output:
What gives the SpeakUp its speech recognition capabilities is the firmware we developed for the on-board MCU. It’s based on the DTW
algorithm, which makes it decisive, it turns your talk into action almost instantly.
Sound is received through an on-board microphone. There’s also a 3.5mm jack for
connecting an external microphone.
After the processed sound has been forwarded to the STM32F415RG MCU that interprets the voice
command, there are two output options which can be utilized at the same time or separately:
STANDALONE MODE:
On-board MCU directly controls
external devices using 12 user
programmable GPIOs
CLICK
™
MODE:
Sends index of the matched voice
command to a selectable interface:
USB or UART.
Between the mic and the MCU sits a VS1053 IC with a
built in stereo audio codec to process the raw signal.