Can CCTV Systems support Audio Recording? How can this be done?

Yes of course, CCTV camera, or IP Camera can record audio, together with video image. 
Nonetheless the two types of CCTV cameras; Analog CCTV camera, and IP CCTV camera record the sound in different manners.
 
Analog CCTV Camera 
The audio input of the Analog camera is directly connected to the DVR (recording device). This means that between the DVR and the audio microphone, there is an Analog signal transmission. The digitalisation of the audio signal is done at the recorder level.

The limit on the number of microphones that can be installed in the system will depend on the number of audio input that is available on the DVR itself.

IP CCTV Camera
For IP Cameras, the audio input is directly connected to the IP camera itself. Between the IP camera and the microphone, it’s an Analog signal transmission. The digitalization of the audio signal is done at the IP Camera level and the digital signal will then be transmitted to the NVR.
 
The limit on the number of microphones that can be installed will depend on the number of video channel that the NVR has, and also whether the IP camera comes with the audio input or in-built microphone feature. In simple terms, if you have an 8 channel NVR, it will be able to accommodate up to 8 microphones.
 
Above-mentioned are the different methods that enable you to include audio recording in your CCTV System. We would highly recommend to install audio microphones in sensitive areas such as the baby’s room or cashier counter. With just video footages alone, you may not be able to get a complete picture of what actually happened during post event investigation. The audio clips will come in handy in this area.
 
Looking to install CCTV Systems? VIN Services & Solutions is a specialist in home and business security systems and we take pride in providing professional before and after sales service. For further information to help with your decision, you may reach out to our team of specialists for assistance.
 
Feel free to email to sales@vin-services.com or call +65 8727 7634 to get in touch with our security advisers.