Audio Mute Configure; Audio Mute Query; Audio + Configure - Monoprice Blackbird User Manual

The blue 01 indicates that the EDID is set to 1.4.
EDID (1~3): EDID 1.4, EDID 2.0, and EDID AUTO.

Audio Mute Configure

Package Length: 18 bytes
[0x50+0x56+0x54+0x17+0x08+MuteON/OFF+0x00+0x01+0x00+0x00+0x00+0x00+0x00
+0x00+0x00+0x00+0x00+checksum]
All you need to change is "MuteON/OFF" and "checksum".
For example, to set Audio Mute ON:
50 56 54 17 08 0F 00 0F 00 00 00 00 00 00 00 00 00 37

Audio Mute Query

Package Length: 18 bytes
This is a query command, which means you must send the query package and then
receive an answer.
For example, to query the Audio Mute status:
Send package: 50 56 54 17 09 00 00 00 00 00 00 00 00 00 00 00 00 1A
Receive package: 50 56 54 17 09
The blue F0 means that audio mute is set to off. Change the
audio mute is ON.

Audio + Configure

Package Length: 18 bytes
50 56 54 17 07 01 00 00 00 00 00 00 00 00 00 00 00 19
F0 00 00 00 00 00 00 00 00 00 00 00 0A
22
F0 to 0F to indicate that