Surprisingly, the Dahua IP Camera (IPC-HDBW1431E) doesn’t feature an audio chip, especially given the number of AV surveillance cameras that are in demand. The audio facility in the Hikvision IP Camera (DS-2CD2143G0-IS) has a sampling rate from 16 kHz to 48 kHz. It also supports the environment noise filtering component.
Kindly note that this audio compression feature is available in model (Hikvision DS-2CD2143G0-IS), not in (Hikvision DS-2CD2143G0-I). When you order this model, do pay attention to the ending “S” in the model number.
With a bird’s eye view, the Hikvision IP Camera (DS-2CD2143G0-IS) and the Dahua IP Camera (IPC-HDBW1431E) are quite similar. But when you zoom in on the specifics, you will find a few good differences between the two brands. Thus, if you are willing to have a better audio and a better video quality for robust construction and an additional trigger, then go for the Dahua IPC-HDBW1431E.
If best-in-the-class transmission quality and focal length variety matters, then the Hikvision DS-2CD2143G0-IS is the surveillance camera that will be best for you. However, it’s not like the Hikvision DS-2CD2143G0-IS transmits low-quality videos and the Dahua IPC-HDBW1431E breaks with a touch.