Symptoms
Note: Dell has renamed the Dell Mobile Adapter Speakerphone - MH3021P, to the Speakerphone with Multiport Adapter - MH3021P.
An echo or noise is intermittently heard from the Speakerphone with Multiport Adapter - MH3021P.
You are hearing the surround effect. It gives a feeling that you are with the MH3021P in a big room.
Cause
The conditions capable of producing a echo, noise, or surround audio effect.
Environment and Placement
The voice algorithm does not handle it well if the location has reverberation (prolongation of the reflected sound).Placing the MH3021P to a corner or near vertical surfaces, boosts the echo sound from the speaker by a reflection effect that is coupled to the microphone.
User Behaviors
Echo is caused by an acoustic path change. The AEC algorithm has to re-converge again. The Echo is heard during the time of re-converging.Examples are listed below (during the call):
Moving a mouse near the MH3021P or pick up the MH3021P deviceAny objects like a finger, or your palm that is close to the microphone and moves back and forth.Inserting cables into the speakerphone like HDMI, USB-C, and USB-A.
(Figure.1 This setup duplicates the Echo effect.)
(Figure.2 This setup does not exhibit the Echo effect.)
Resolution
Update to the latest version of the MH3021P Connect Application and Firmware Update Utility from the Dell Support Site:
Browse to Dell Speakerphone with Multiport Adapter – MH3021P Drivers and Downloads page.
Select the Operating System that is installed on the Dell computer.
Under Category, select Application.
Locate the latest MH3021P Connect Application and Firmware Update Utility.
Click Download and save the file to your computer.
Open File Explorer and browse to the location where the downloaded file is saved.
Double-click the downloaded MH3021P firmware setup file and follow the on-screen instructions to complete the installation process.
You computer will restart to complete the installation.
Or
Keep the mouse at least >15 cm away from the MH3021P.
Or
Place the MH3021P away from any corner, or wall, or keep it in a large room.
Prevent any objects from moving back and forth near the MH3021P microphone.
