The microphone array is available from Seeed Studios as a separate board, and while the "Don dock" board has pins for it, the "Go" board has a ribbon cable connector. These are actually really useful as they allow you to attenuate the background, which is really useful if you're a fireman and someone is using a buzzsaw nearby. The "Don dock" board (the $20 one) has a digital microphone and an amplified stereo speaker output. I think we'd end up using an I2S CODEC. It can execute in place from one SPI FLASH device to save RAM. We don't know how big the FLASH chip is, but assume 8 MB until told otherwise. There is also a microSD socket. I doubt it can execute in place from microSD, so you have to use the RAM as program memory. Getting the documentation straight will take time, like when the ESP8266 came out.
On Fri, Feb 15, 2019 at 9:31 PM Steve <coupaydevi...@gmail.com> wrote: > "The chip comes with a high-performance microphone array audio processor > for real-time source orientation and beamforming." > > Hey, we might need 3-bits allocated to the vocoder for spatial position > indication :-) > _______________________________________________ > Freetel-codec2 mailing list > Freetel-codec2@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/freetel-codec2 >
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