User guide

Viz Engine Administrator’s Guide

• SPEAKER_RESERVED

See Also

• Audio Settings

• Matrox configuration interface

7.8 Matrox Audio

The Matrox card is able to capture and playout using up to 16 channels. The audio

can be embedded into the video signal or be an external signal through the AES / EBU

connectors. It depends on the Matrox version which AES / EBU connectors are present.

On the X.mio cards there are balanced 75 Ohm connectors. On newer cards, 110 Ohm

connectors are used.

Viz Engine is only able to mix PCM data. Dolby Digital can only be used in the

MATROX_LOOP Mode, which allows no mixing (see also SECTION AUDIO_CONFIG’s

MatroxAudioMode settings).

On the Targa board only embedded audio in Stereo is supported.

This section also contains information on the following procedure:

• To enable audio

To enable audio

1. Start Viz Config

2. In the Audio Settings section activate at least one of the Enable embedded

audio on Input1 or Enable embedded audio on Input2 buttons.

• This needs to be done for AES / EBU audio as well.

3. Select one of the following Matrox audio modes: Embedded, AES, Embedded AES,

AES Embedded or Loop.

4. Click Save and close Viz Config.

5. Open the configuration file and check that the following values are set in SECTION

AUDIO_CONFIG:

• Matrox0.AudioOut.Enable = 1

• Matrox0.AudioOut.Delay = 4

• Matrox0.AudioIn1.AudioEnable = 1

• Matrox0.AudioIn1.AudioChannels = 2

• Matrox0.AudioIn1.AudioDelayDVE = 4

6. If required, also change these:

• Matrox0.AudioIn2.AudioEnable = 1

• Matrox0.AudioIn2.AudioChannels = 2

• Matrox0.AudioIn2.AudioDelayDVE = 4