C2422HE, C2722DE, C3422WE Monitors Experiencing Low Audio Output in Teams and Zoom Apps

1. This is expected behavior if the external speaker volume level is different from the C2422HE, C2722DE, or C3422WE monitor:

   Condition	Difference /Explanation
   C model Mic + C model Echo Cancelling Speakerphone audio path.	Designed as Teams personal device, max output level is 73 dB SPL in reverberant room. Under the Echo Cancelling Speakerphone function, if the user environment is noisy, the volume output is lower.
   C model Mic + Teams certified external speakers.	Sound specifications follow Teams certified external speakers; External speakers' DSP does not suppress noise, the volume output decreases even when the environment is noisy, but there is echo and/or background noise.

    

2. Echo Cancelling Speakerphone and non-Echo Cancelling Speakerphone go through different audio paths. The max volume specification is different by design:

   Condition	Audio Path	Max Volume	Remark
   Echo Cancelling Speakerphone audio path.	USB path	73 dB SPL	Echo Cancelling function is enabled and passes Teams certification.
   Display Audio sound volume.	I2S path(scaler)	82 dB SPL	No Echo cancelling function

    

3. The C2422HE, C2722DE, and C3422WE Echo Cancelling Speakerphone output sound output is different when in Zoom and Teams. The volume specification in Zoom and Teams is different for C2422HE, C2722DE, and C3422WE monitors:

   Model	Max volume(Zoom)	Max volume(Teams)
   C2422HE, C2722DE, C3422WE	76 dB SPL	73 dB SPL

Instructions for settings can be found in the User Manual. Download the manual at https://www.dell.com/support/home/products?app=manuals.