23 Dec 2018, 21:39
Quote:An excellent solution for adding a voice interface to any device, the Seeed ReSpeaker Core effortlessly processes speech algorithms in full documents. Based around the ATMega32U4 processor, the Core is compatible with Arduino, so you’ll have full voice access to an array of sensors. The embedded microphone comes with a variety of speech algorithms, such as direction of arrival, beamforming, and acoustic echo cancellation. A built-in AI7688 Wi-Fi module allows the device to connect directly with your router, so you won’t have to piggyback off another device. Because it’s compatible with the GNU/Linux based OpenWrt operating system, the mic benefits from an array of preexisting software tools.
Specs
Model number: 102010088
Operating system: GNU/Linux based OpenWrt
Wi-Fi: AI7688
Wi-Fi Network: Support Legacy 802.11b/g and HT 802.11n modes
2 expansion headers for I2C, GPIO and USB 2.0 host
Interfaces: Built-in 3.5mm AUX port, micro USB and SD card slot
Microprocessor: ATMega32U4
USB CDC virtual serial port for linux console
12 programmable RGB LED indicators
8 on board touch sensors
Codec WM8960
DAC SNR 98dB (‘A’ weighted), THD -84dB at 48kHz, 3.3V
ADC SNR 94dB (‘A’ weighted), THD -82dB at 48kHz, 3.3V
Stereo Class D speaker driver with 87% efficiency (1W output)
On-chip headphone driver
40mW output power into 16Ω at 3.3V
THD -75dB at 20mW, SNR 90dB with 16Ω load
On-chip PLL
Sample rates: 8, 11.025, 12, 16, 22.05, 24, 32, 44.1, 48 kHz
Power supply: 5V DC
Diameter: 2.7 in (7 cm)
Weight: 0.5 oz (17 g)
https://www.massdrop.com/buy/seeed-respeaker-core