
Yes, a dash can record sound inside the car. After installing a dash cam, it can record both video images and sound throughout the entire driving process, providing evidence in case of traffic accidents. For those who enjoy road trips, it can also be used to document the journey through challenging terrains. While driving, it continuously records video, along with the time, speed, and location, functioning much like a black box. Additionally, a dash cam can serve as a parking monitor when not in use. It's important to note that the recorded video footage should not be edited, as tampering with the footage could render it useless in the event of an accident. This feature also helps prevent fraudulent claims, which are unfortunately common in today's society.

I've seen many dash cams, and most of them can actually record in-car audio, but it depends on whether the device has a microphone function. The cheap one I bought for my car two years ago didn't have this feature. Later, I replaced it with one that has audio recording and found it quite useful. It can record daily conversations with family or radio sounds while driving, and it can even serve as evidence in critical moments. However, privacy concerns should be noted—it's best to inform colleagues or friends in advance if you're recording, as secretly recording in some places is illegal. The setup isn't complicated either; you can usually find the toggle in the dash menu. I generally turn on recording for long trips and turn it off in the city to save power. Also, remember to check if your storage card has enough space, as audio files can take up quite a bit of room.

I've been using a dash for over five years, and whether it can record audio really depends on the specific model you buy. More than half of the dash cams on the market now come with microphones, but many have the recording function turned off by default, so you need to enable it manually. I usually keep the audio recording on during my commute, and it has come in handy when I accidentally captured the other party admitting fault in minor collisions. However, I should warn you that there's a big difference in audio quality—cheap, no-name brands often can't pick up voices clearly when the windows are down or music is playing. Also, prolonged audio recording can cause the device to overheat, especially in summer, which can affect its lifespan. I make it a habit to check the audio files weekly and delete the unnecessary ones promptly.

The recording function of dash cams is actually quite simple, and most mainstream brands support it by default. I didn't know about this feature at first either, until I found the switch in the manual. Once enabled, it clearly records conversations and navigation prompts during driving. However, there are situations where recording isn't advisable, like during private calls or sensitive discussions, due to privacy concerns. Once I lent my dash cam to a friend who didn't realize recording was on, and it captured their entire marital argument - extremely awkward. For battery concerns, newer models feature smart sleep mode that automatically turns off recording when parked.

I pay close attention to device functionality and found that dashcam audio recording requires three prerequisites: the hardware must have a built-in microphone, the recording option needs to be enabled in settings, and sufficient storage space is required. I've tested recording performance under various weather conditions - it's clearest with windows closed during rain, while highway driving introduces noticeable wind noise. Avoid ultra-cheap no-name brands; I tried a budget unit under 100 RMB and the recordings were full of static interference. I recommend setting up a recording toggle in the mobile app for convenient operation while driving. Remember to disable recording when parked to avoid capturing private conversations that might cause issues.

Speaking of the recording function of dash cams, it's actually quite practical. I once experienced a rear-end collision where the recording proved it was the other party's car that rolled back. However, it's not suitable for all car models, such as convertibles or vehicles with modified sound insulation, where the effectiveness is reduced. When purchasing, pay attention to the specifications; products with dual microphones offer more accurate positioning and can distinguish between sounds inside and outside the car. The one I use also supports voice control—just say 'start recording' to activate it, which is very convenient. For storage, it's recommended to use a card with 128GB or more, otherwise, just the video files will fill it up. Finally, a reminder to protect the microphone port when washing the car, as water damage can be troublesome.


