# Programming with MicroPython: I2S Microphone

### Import FutureBoard Library

Import the Library to make use of its functions.

```
from future import *
```

### 09: I2S Microphone

### Import I2S Library

```
import audio
```

#### 1. Initiate the Microphone

```
au=audio.Audio()
```

#### 2. Get Loudness

```
au.loudness()
```

Returns the detected loudness, values ranges from 0\~4095.

#### 3. Voice Recognition

```
au.recognize(sec=1,vid=1737)
```

Voice Recognition requires Internet Connection.

Set the recognition length in seconds with parameter sec, recommended length is 1\~3.

4 languages are supported currently, put the code into the vid parameter.

1. 1537: Putonghua
2. 1737: English
3. 1637: Cantonese
4. 1837: Szechuan Dialect

#### Sample Program: Loudness

```
import time
import audio
au = audio.Audio() 

while 1:
  time.sleep(0.1)
  print(au.loudness())
```

#### Sample Program

```
#/bin/python
from future import *

import audio
au = audio.Audio()

wifi.connect("", "")
screen.clear()
screen.text(au.recognize(vid=1737, sec=2),5,10,1,(0, 119, 255))
```