# Voice Recognition Load Model(KOI v1.12.0)

From KOI v1.12.0 onwards, saving and loading a voice recognition model is supported.

### Install an SD Card

The trained model will be stored on an SD card, without an SD card we won’t be able to save this model.

<figure><img src="https://kittenbothk.readthedocs.io/en/latest/_images/022.png" alt=""><figcaption></figcaption></figure>

### Using a Trained Model

<figure><img src="https://kittenbothk-eng.readthedocs.io/en/latest/_images/mcbanner.png" alt=""><figcaption></figcaption></figure>

#### **Loading Extensions**

Search "KOI" in the search bar.

<figure><img src="https://kittenbothk.readthedocs.io/en/latest/_images/koi_search.png" alt=""><figcaption></figcaption></figure>

Or copy and paste the following link to the search bar.

**<https://github.com/KittenBot/pxt-koi>**

Blocks for Voice Recognition:

<figure><img src="https://kittenbothk-eng.readthedocs.io/en/latest/_images/0.6.4.png" alt=""><figcaption></figcaption></figure>

#### Sample Program

{% embed url="<https://makecode.microbit.org/_ds6Eb6UmxdmM>" %}

### Program Flow

1: Download the program to the Micro:bit.

2: Press A to load the trained model.

3: Press B to recognize a voice command. KOI will display green upon a successful recognition.

4: Micro:bit will display the tag of the recognized command.

### Sample Code

[1. Voice Recognition Model Loading(Firmware1.9.5\_Extension0.5.7)](https://makecode.microbit.org/_foxTJwW8hayD)

### Extension Version and Updates

There may be updates to extensions periodically, please refer to the following link to update/downgrade your extension.

[Makecode Extension Update](https://kittenbothk-eng.readthedocs.io/en/latest/Makecode/makecode_extensionUpdate.html)

### FAQ

#### 1: There is no reaction after pressing the buttons on the Micro:bit.

· A: This is because KOI has a longer boot time than Micro:bit. When the power is turned on, Micro:bit has already ran the code for KOI initialization before KOI is ready.

· Solution: Reset your Micro:bit after KOI has been turned on. (The trick is to let KOI power on completely before initialization.)

#### 2: Does KOI work with 3V input?

· A: No, KOI only works with 5V.

#### 3: KOI displays red everytime I try to record my command.

· A: The noise level hasn’t been calibrated, it is essential to run the block before voice recognition.