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CC85XXDK-HEADSET di-directional audio drop-out

Other Parts Discussed in Thread: CC2590

I have been working with the CC85XXDK-HEADSET development kit to implement a wireless duplex communications capability with our existing fixed intercom system. (Please find a block diagram attached).

 

I have initially two Master/Slave pairs configured for two way communication (a total of four pairs will be required).

 

The audio received from each Slave at the Master boards is summed and fed to the fixed intercom system and the return audio from the intercom is fed to each individual Master and transmitted to the corresponding Slaves.

 

The problem I'm having is that the audio signal is frequently dropping out and the best range I can achieve is approximately 7 to 8 meters.

 

Please could you advise if there may be a way to solve this issue.

 

The configuration settings are as follows:

 

 

Headset Master Configuration:

 

Configuration Type -    Operation:                                             Autonomous

 

Audio Streaming -        Audio Channel Setup:                           Streaming format: SLAC

 

                                       Sample Rate and Latency Setup:         Sample rate: 48000

                                                                                                     Audio latency (samples): 832

                                                                                                     Audio latency (ms): 17.333 ms

 

(Note: various sample rates and latency settings tried however latency needs to be short as user can hear own voice in return audio received from Master due to our intercom system).

 

Radio -                            Radio Settings:                                    Range extender: CC2590 (HGM)

                                                                                                     Target Tx power (excl. CC259x): 5 dBm

                                                                                                     Used RF channels: (Master 1) 1, 5, 9, 13, 17, 18

                                                                                                                                    (Master 2) 2, 6, 10, 14, 17, 18           

 

                                        Network Pairing:                                   Maximum slave count: 1

                                                                                                      Pairing Trigger: None

 

Advanced Options -      Audio Streaming:                                  Fade out when muting outputs: No

 

 

Headset Slave Configuration:

                                                                                               

Radio -                             Network Pairing:                                 Pairing trigger: Button

                                                                                                    Pairing timeout: 10.00s

                                                                                                    Pairing mechanism: Proximity

                                                                                                    Proximity RSSI threshold: -50 dBm

                                                                                                    Default network ID (hex): FFFFFFFE