Fairlight audio mixer

Some of the newer models of the ATEM switchers have Fairlight audio mixers in them instead of the more basic ATEM audio mixers of the previous models. These mostly use new commands to control the mixer.

class pyatem.command.FairlightMasterPropertiesCommand(eq_gain=None, dynamics_gain=None, volume=None, afv=None, eq_enable=None)

Implementation of the CFMP command. This sets the settings the master channel of fairlight audio.

Offset	Size	Type	Description
0	1	u8	Mask, see table below
6	2	i16	EQ gain [-2000 - 2000]
10	2	u16	Dynamics make-up gain [0 - 2000]
12	4	i32	Master volume [-10000 - 1000]
16	1	bool	Audio follow video
17	1	bool	Enable master EQ
18	2	?	unknown

Bit	Mask value
0	EQ Enable
1	EQ Gain
2	Dynamics gain
3	Master volume
4	AFV
5	?
6	?
7	?

__init__(eq_gain=None, dynamics_gain=None, volume=None, afv=None, eq_enable=None)

Parameters:

• eq_gain – Make-up gain for the master EQ dialog

• dynamics_gain – Make-up gain for the master Dynamics dialog

• volume – Master volume fader value

• afv – Make the master volume follow the fade-to-black function

• eq_enable – Enable the EQ on the master bus

class pyatem.command.FairlightStripPropertiesCommand(source, channel, delay=None, gain=None, eq_gain=None, eq_enable=None, dynamics_gain=None, balance=None, volume=None, state=None)

Implementation of the CFSP command. This sets the settings of a channel strip in fairlight audio.

The source index is the same as the video source index from the InputProperties fields.

For normal channel strips the channel index should be -1. If the channel is split (two mono channels instead of a stereo input) the channel numbers are 0 and 1.

Offset	Size	Type	Description
0	2	u16	Mask, see table below
2	2	u16	Source index
15	1	u8	Channel number
16	1	u8	Delay in frames
22	4	i32	Gain [-10000 - 600]
30	2	i16	EQ Gain
34	2	u16	Dynamics Gain
36	2	i16	Pan [-10000 - 10000]
40	4	i32	volume [-10000 - 1000]
44	1	u8	State
45	3	?	unknown

Bit	Mask value
0	Delay
1	Gain
2	?
3	EQ Enable
4	EQ Gain
5	Dynamics gain
6	Balance
7	Volume
8	State

__init__(source, channel, delay=None, gain=None, eq_gain=None, eq_enable=None, dynamics_gain=None, balance=None, volume=None, state=None)

Parameters:

• source – The source index

• channel – The channel index inside the source, -1 for the normal stereo channels and 0 and 1 for split

• delay – Delay in frames

• gain – Input gain

• eq_gain – Make-up gain from the EQ dialog

• eq_enable – Enable the EQ block

• dynamics_gain – Make-up gain from the dynamics dialog

• balance – Channel balance or pan

• volume – The volume fader level

• state – Bitfield for the mute and AFV state. 1=off, 2=on, 4=afv

Level meters

class pyatem.command.SendFairlightLevelsCommand(enable)

Implementation of the SFLN command. This enables or disables receiving the 10Hz audio level update packets for the Audio page.

Offset	Size	Type	Description
0	1	bool	Enable sending levels
1	3	?	unknown

__init__(enable)

Parameters:

enable – Enable or disable receiving audio level data