# Configure the audio processing parameters

To configure the audio processing parameters, follow these steps:

1. From the **Media Processing** tab, go to the **Audio processing** section. The audio processing parameters are displayed for each audio input.

2. Select the audio tab stream you want to configure then \[set the appropriate value for each parameter].

3. You can [configure **Watermarking**](/beam/live-encoder/configure/media-processing/audio-processing#audio-watermarking).

4. You can [configure **DTMF extraction**](/beam/live-encoder/configure/media-processing/audio-processing#dtmf-extraction).

5. You can configure \[**Signal loss management replacement sound**]).

6. Click **Save and continue** or **Save and exit** to save your changes.

## Audio watermarking

To configure audio watermarking, follow these steps:

1. From the **Media Processing** > **Audio processing** tab, go to the **Watermarking** section.

2. Select the watermarking type you want to activate by clicking `Edit`.

3. Activate **Insertion** and/or **Extraction** by ticking **Enable**.

4. [Set the appropriate value for each parameter](/beam/live-encoder/parameters/media-processing/audio-processing#watermarking).

5. Click **Ok** to validate.

6. Click **Save and continue** or **Save and exit** to save your changes.

## DTMF extraction

To configure DTMF extraction, follow these steps:

### Create service

Create a Live Encoding service.

### Configure the input parameters

1. From the **Input** tab, set the **Type** to **MPEG-2 TS/UDP**.

2. Enter the primary source parameters:
   - **Network interface**
   - **Stream address** and **Port**

3. Click **Ok** to validate.

4. Go to the **Input streams selection** > **Audio ID** section then click **Add** to define the audio stream.

   Enter the **PID** of the audio track with cue tones. You should get the following:

   ![el cfig input audio cuetone](/_machine-assets/2183debc2cea396da5679757326376ee96ab3df7d072f52fb00816cd2cf6c6cd.png)

5. Click **Ok** to validate.

6. Go to the **Metadata ID** section then click **Add** to define the metadata stream.

   - Set **Type** to **Cuetones**.
   - Select the audio input stream you just configured as **Source**.
     You should get the following:

   ![el cfig input metadata cuetone](/_machine-assets/7dec2088315508ff2a4362e84b78c73092ebaefa94e29f4c89ac74d0f213bf62.png)

7. Click **Ok** to validate.

8. From the **Media Processing** > **Audio processing** tab, go to the **Cue Tones** section. The **Extract DTMF** checkbox should already be checked to enable DTMF extraction and cue tones detection. You can keep the default parameters.

   ![el cfig processing cuetone](/_machine-assets/1aac770a03d148c3b425b182d6a826f55fdfbe19d170774fe9b87ac59c809cad.png)

### Configure the encoding parameters

1. Go to the **Encoding** tab.

2. From the **Video encoding** section, click **Add** to add and configure the video stream. You can keep the default parameters or adjust them if needed.

3. Click **Ok** to validate.

4. From the **Audio encoding** section, click **Add** to add and configure the audio stream.

   - Set the **Codec** to **MPEG-1 Layer II**.
   - You can keep the default parameters or adjust them if needed.

5. Click **Ok** to validate.

6. If you go to the **Metadata encoding** section, you can see that it is already configured in **Pass-through**.

### Configure the output

1. From the **Output** tab, click the **Add an output** button then set the output parameters, especially the **Network interface**.

2. Go to the **Output stream** section then click **Add**.

   - Enter the multicast output **IP address** and **Port**.
   - Tick the metadata, audio and video streams.
     You should get the following:

   ![el cfig output stream cuetones](/_machine-assets/fad8b502514015a1503b8e0e66a9a88c386c2fee1931ac12c65f033933117e3f.png)

3. Click **Ok** to validate.

### Save

Click **Save and exit** to save and finalize your service configuration and go back to the **Services** page.

### Run the service

[Assign a server to run the service](/beam/web-interface/services#assign-a-server-to-run-the-service).

### Check statistics

Click `Chart` to display service details and to monitor the service. Specific cue tones statistics are displayed.