How to choose direction when i activate Beamforming ?

[EvanFang1013]

Hi~ Excuse me ! I want to choose direction to collect sound signal,but i don't how to use

By the way, device.send_command(b"\x00\x00\x08\x00\xAA\x01") Can you explain the command line about "x00\xAA\x01" Thank you

[matteoronchi]

Hi EvanFang1013,

the command structure is the following: [Feature_Mask | Command_Type | Command_Value] so, in your case:

[0x00000800 | 0xAA | 0x01]

• Feature_Mask: 0x00000800 --> Beamforming Feature Mask
• Command_Type: 0xAA --> On/Off Beamforming command type
• Command_Value: 0x01 --> Enable

In general, for which concern the Beamforming Feature, the available commands are the following:

• Enable/Disable Beamforming:
  • (b"\x00\x00\x08\x00\xAA\x01"), Enable
  • (b"\x00\x00\x08\x00\xAA\x00"), Disable
• Change Beamforming Direction:
  • (b"\x00\x00\x08\x00\xBB\xVV"), with VV in [1,..,8] (8 possible directions if you are using a BlueCoin with the following values:
    • TOP=1
    • TOP_RIGHT=2
    • RIGHT=3
    • BOTTOM_RIGHT=4
    • BOTTOM=5
    • BOTTOM_LEFT=6
    • LEFT=7
    • TOP_LEFT=8
• Change Beamforming type (Algorithm):
  • (b"\x00\x00\x08\x00\xCC\x00"), ASR Ready Beamforming
  • (b"\x00\x00\x08\x00\xCC\x01"), Strong Beamforming

Best regards, Matteo

[EvanFang1013]

Dear Matteo, Thanks for your support. I'm successfully.