Output layer, Output device, Status – ChamSys MagicHD User Manual

Page 33: Output

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Note

• By default, gain for each layer is 0, so that audio is not heard. This is to prevent unwanted surprises when playing clips that

have audio that you don’t want to hear. You must choose to set the gain above zero to hear audio.

• Pan uses a 3dB pan law, so a fully panned signal will increase the level in the L or R channel by 3dB. It doesn’t sound louder

because the signal has gone from the opposite channel, but it might result in clipping if the gain is already high.

• There is no way to select audio only from a clip that has video. Reducing the layer intensity to hide the video reduces the

audio level too. Use an external tool to extract the audio from the clip, and play it by itself.

5.3.2

Output Layer

The

output layer

has an

audio volume

control. The overall volume of all layers is controlled by the output layer’s volume, which

is also faded with the output layer intensity.

5.3.3

Output Device

The audio output device can be chosen from the

MagicHD application menu

(Media → Audio devices). The list of devices is

provided by the operating system: MagicHD simply allows the user to choose one. The output device can be changed while
MagicHD is running, but of course this will interrupt any audio that is playing. MagicHD remembers the selected device in the
show file (combined version) or its settings file (stand-alone version).

If the list of audio devices changes, MagicHD won’t change audio output, but the menu might not show the right selection.
Select a different device to ensure the setting is correct. Similarly, if the list of devices changes when MagicHD is not running,
the setting it has saved in the show file might be out of synch with the new device list.

5.3.4

Status

The

HUD

shows audio level superimposed on the layer’s intensity, next to its thumbnail. If the level is peaking, the display goes

bright.

If a layer has audio but it is not being played for some reason (e.g. gain is zero) a "no audio" icon is displayed over the thumbnail
indicating lack of audio.

If a layer has audio but no video an animated thumbnail is shown on the

HUD

and in the MagicQ media window. This shows

you that an audio file is selected.

Tip
If you are having problems playing audio use the

HUD

to examine the status.

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