
A dash cam can record sound inside the car. After installation, it can record video images and audio of the entire driving process, which can serve as evidence in traffic accidents. Precautions for using a dash cam: Regularly process data to prevent inconvenience caused by data loss when needed. Additionally, always purchase certified products with 3C quality assurance. For the installation position, try to mount it near the interior rearview mirror for optimal visibility. Also, ensure the lens is within the wiper cleaning range to maintain clear recording during rain. The installation position should not interfere with the car's airbag deployment range. Furthermore, since high-definition processing in dash cams generates significant heat, prolonged exposure to sunlight and extended use of car power supply can lead to crashes or black screens. Therefore, it is recommended to use battery recording rather than relying on external power for long periods. Basic components of a dash cam: Main unit: Includes a microprocessor, data storage, real-time clock, display, lens module, operation keys, printer, data communication interface, and other devices. If the main unit does not include a display or printer, it should have corresponding data display and print output interfaces; speed sensor; data analysis software.

I always use a dash cam, which can record sounds inside the car if you enable the microphone function. My dash cam has a built-in microphone setting that can be freely turned on or off via a smartphone. When enabled, it clearly captures conversations between me and passengers. For example, during long trips, turning it on allows us to replay discussions about routes or music later. However, I usually keep the audio recording off to avoid privacy leaks. Once, I accidentally left it on and recorded a private conversation with my family, which felt uncomfortable. Placement also matters—avoid positioning it too close to prevent recording unwanted noise. Overall, it’s a practical feature but requires adjustments based on personal preferences.

Many dash cams do record in-car audio, depending on the model and settings. The two high-end models I've used both have built-in microphones, which require activation in the app to start recording. When turned off, they only capture video without sound. Technically, this feature supplements accident scene analysis by collecting in-car audio, such as collision sounds or arguments. However, microphone quality varies—cheaper versions may distort or miss details. I recommend checking the specs before purchase to ensure there's an easy-to-use toggle option. Additionally, keeping the firmware updated can optimize audio processing and improve clarity. Overall, it's an optional feature that provides more comprehensive coverage but consumes slightly more power.

If the dash cam has a microphone function, turning it on can record all sounds inside the car. I always check the settings to avoid accidental recordings. Privacy comes first, so I turn off audio recording unless it's necessary. Some local laws prohibit recording without consent, so be cautious in public. Taking a few seconds to confirm the settings before each drive becomes a safe habit.


