Speech Recognition Sensor
Introduction
Speech recognition sensor can realize the voice recognition function, and support self-learning words. Combined with rainbow LED, intelligent cars and other hardware can realize voice recognition control lamps, voice recognition control cars and other interesting cases.
Technical Specifications
| Item | Parameter |
|---|---|
| SKU | EF04109 |
| Interface Type | IIC |
| Operating Voltage | 3.3V |
| Core IC | SNR9815 |
Outlook and Dimensions
Speech Recognition Sensor Preset Phrases and Feedback
Wake-up Call
| Lexical Item | Feedback Voice | IIC Return Data |
|---|---|---|
| Hi Shaun | Hi, I’m here | 0x01 |
Functional Group 1
| Lexical Item | Feedback Voice | IIC Return Data |
|---|---|---|
| Lights on | Already on | 0x10 |
| Lights off | Already off | 0x11 |
| Turn left | Turn left | 0x12 |
| Turn right | Turn right | 0x13 |
| Full speed ahead | Full speed ahead | 0x14 |
| Reversing | Reversing | 0x15 |
| Line tracking | Line tracking | 0x16 |
| Avoid objects | Objects avoided | 0x17 |
| Stop | Already stopped | 0x18 |
Function Group 2
| Lexical Item | Feedback Voice | IIC Return Data |
|---|---|---|
| Start device | Device started | 0x20 |
| Turn off device | Device turned off | 0x21 |
| Pause | Have arest | 0x22 |
| Keep going | Keep going | 0x23 |
| Raise a level | Level raised | 0x24 |
| Lower a level | Level lowered | 0x25 |
| Music on | Enjoy the music | 0x26 |
| Music off | Music off | 0x27 |
| Switch music | Enjoy next music | 0x28 |
Function Group 3
| Lexical Item | Feedback Voice | IIC Return Data |
|---|---|---|
| Execute function one | Execute function one | 0x31 |
| Execute function two | Execute function two | 0x32 |
Self-Learning Lexical Item
| IIC Return Data | Feedback Voice | Function |
|---|---|---|
| 0×50 | Enter the learning mode and learn the Xth entry | Learn the entries sequentially |
| 0×60 | Initialization completed | Delete all learned entries |
| Lexical Item | Feedback Voice | IIC Return Data |
|---|---|---|
| Quit learning | Quit learning | |
| Learning entry one | 0x50 | |
| Learning entry two | 0x51 | |
| Learning entry three | 0x52 | |
| Learning entry four | 0x53 | |
| Learning entry five | 0x54 | |
| Learning entry six | 0x55 | |
| Learning entry seven | 0x56 | |
| Learning entry eight | 0x57 | |
| Learning entry nine | 0x58 | |
| Learning entry ten | 0x59 |
Quick Start
Required Materials and Diagram of Connection
The speech recognition sensor is connected to the IIC interface as shown in the figure below.
Take IOT:bit as an example
Add Software Library
Click "Advanced" in MakeCode's code drawer to see more code options.
Click "Extension" and search "https://github.com/elecfreaks/pxt-ASR" in the pop-up dialog box to download the code base for speech recognition building blocks.
Write the program as shown
Reference Program
Link: https://makecode.microbit.org/_7TLYW8WzyLka
You can also download the program directly from the following web page, and you can start running the program after the download is complete.
Result
The content of the LED display is controlled by a voice recognition sensor.