mid-to-high end
ess9281 chip is a high-end identification chip of local voice trigger engine, which has the characteristics of low cost, high reliability and strong versatility. In the voice technology, it realizes high reliable wake up recognition rate, longer distance wake up, lower false wake up rate, richer voice control command number, stronger anti-noise ability, faster response identification time, and pure offline recognition without networking. The power is 12 watts, and its main parameters are the voltage output range is 1.1V-1.85V, and the switching frequency is 80KHz. The input voltage range is 2.7V ~ 5.5V, the main frequency rate is 3600, and the output voltage is 36 volts.