Voice Recognition Controller (Desk Lamp Technical Solution)

1. CPU component part

＊ 32-bit DSP supports hardware floating-point unit (FPU)

＊ As high as 192MHz programmable processor

＊ Built -in 512KB Flash

＊ Level 4 interrupt priority

2. DSP audio processing

＊ Acoustic echo elimination/suppression (AEC, AES)

＊ Single MIC environmental noise elimination system (ENC)

3. Audio codec 三

＊ Single channel 16 -bit DAC, signal -to -no -noise ratio & gt; = 95 db

＊ Single channel 16 -bit ADC, signal -to -no -noise ratio & gt; = 90 dB

＊ Support 8kHz/11.025kHz/16kHz/22.05kHz/24kHz/32kHz/44.1kHz/48kHz

＊ an analog MIC amplifier, built -in MIC bias voltage output

＊ Support a single PDM digital MIC input

＊ Support the hatless, single -end and differential mode on the DAC path

＊ Support 16 ohms and 32 ohms speakers load

Fourth, peripheral equipment

＊ Full speed USB 2.0 OTG controller

＊ 6 multi -function 32 -bit timer, support capture and PWM mode

＊ Three types of all -dual -work basic UART, UART0 and UART1 support DMA mode

＊ A hardware IIC interface support host and device mode

＊ 10 -bit ADC is used to simulate sampling, and the external wake/interrupt is in all GPIOs.

5. PMU

＊ Low -voltage LDO for internal digital and analog circuit power supply

＊ The current consumption in the 10UA soft customs mode consumption

＊ Built -in LDO as the core, I/O, Flash

＊ VBAT is 2.2V ~ 5.5V

＊ VDDIO is 2.2V ~ 3.6V

6. Core algorithm

＊ HKUST Xunfei's voice recognition algorithm supports Chinese or English, and supports a large number of 35 commands.

＊ High -reliable wake -up recognition rate

＊ Waking up a farther distance, lowering the wake rate lower

＊ Rich voice control instructions

＊ Stronger anti -noise ability

＊ Fast response recognition time

＊ Pure online recognition of free network

＊ Standby power consumption 18MA

Seven, chip packaging

＊SOP16&QSOP24

Eight, temperature

＊ Work temperature: -20 ℃ ~ +70 ℃

＊ Storage temperature: -65 ℃ ~ +150 ℃

Changyatai Electronic offline voice recognition chip application field:

1. Voice toys (smart toys, stars, glowing music shoes, sounding all toys, plush dolls, extrusion boxes, etc.)

Second, smart locks (fingerprint locks, password locks, electronic locks, carding card locks, safe, etc.)

3. Consumer electronics (adult products, aircraft cups, shared charging treasures, ear temperature guns, electronics, disinfection boxes, massage instruments, moxibustion instruments, soothing machines, electric vehicles, electronic picture books, infant electronic products, Christmas and holidaysHoliday music light products, etc.)

Fourth, home appliances (blood oxygen instrument, massage instrument, hot kettle prompt sound, rice cooker, floor sweeper, infant monitor, blood pressure meter, etc.)