Have you ever been driving along and witnessed something that you wish you could have captured on video? It could be a car accident, strange or reckless driving behavior or just something interesting you want to share on social media. We most certainly can’t drive around with our smartphones in our hand, and when something worth recording does happen, we’ve usually missed the opportunity to capture the moment. A dashcam system is the solution. Read on to learn everything you ever wanted to know about dash cameras and how they work.
What is a Dashcam?
A dashcam is a compact audio and video recording system that is designed to mount to your windshield. The camera faces forward and includes a wide-angle lens that will capture almost everything that happens in front of the vehicle. Most cameras on the market include a built-in microphone, so you get the entire play-by-play of the event as it occurs.
Basic Dash Camera Features
Dash camera systems are typically wired into the ignition circuit of your vehicle and begin recording as soon as you start your car or truck. There is no need to remember to press a button. Most camera systems include an integrated accelerometer that records forces in all three axes along with the video. This information can be used to show acceleration and braking and cornering forces, as well as to detect impacts in the event of an accident.
The better camera systems on the market use an SD or micro SD card to store video information. These digital storage formats are compact and reasonably reliable. The small cards can be removed and connected to a computer in your home or office to view videos.
How Dash Camera Video Recording Works
As mentioned, most cameras start recording as soon as the vehicle ignition is turned on. Options in the setup menu allow the installer to configure the length, frame rate and the resolution of the video. Typical video lengths are one, three and five minutes. These short lengths make it easy to pick out certain events while ignoring long periods of uneventful driving.
Normal videos are stored on the memory card in a specific folder called Videos or something similar. Once the folder fills up, the oldest video is deleted to make room for a new one. The number of videos stored on the card depends on the resolution and, subsequently, the size of the video files in relation to the total storage space available on the storage device.
Most systems have a secondary folder with a name like Event. The videos stored in this folder have been flagged for safekeeping. A threshold for the onboard accelerometer can be set to trigger an event recording. Sudden deceleration caused by slamming on the brakes or hitting an object are typical trigger events. Most systems also include a manual trigger button that will let you save a file to the Event folder.
Going Back in Time
We mentioned at the begging of this article that a dashcam is a great tool to record an event that has already taken place. While that sounds a bit like time-travel, it’s quite simple in operation. Allow us to explain.
Your dash camera is always recording and saving content to the memory card. In the event of an automatic or manual trigger, the dashcam saves five to 10 seconds’ worth of information from before the trigger and 30 to 60 seconds of video after to the file in the Event folder. You can witness a car accident, come to a full and safe stop, then press the trigger button to store the entire experience for later review.
Should My Dash Camera have a Screen?
There are two basic styles of dash cameras: with and without a display screen. The inclusion of a screen makes it much easier to install and aim the camera properly. Having a screen also allows you to play videos back right on the camera unit. The tradeoff is, of course, the size of the camera system. Including a screen will make the camera larger. Choosing a camera with or without a built-in screen depends on your application and personal preference.
Dash Camera Options and Accessories
Many dash camera systems include or have a provision for an optional GPS receiver. When equipped with GPS, the longitude, latitude and speed of the vehicle are stored along with the video files and accelerometer information. Many video playback software packages (available as a download from the camera manufacturer’s website) overlay the vehicle location on Google Maps during playback.
Another very popular option for dash camera systems is a second camera. This camera can be placed in the rear window to capture activity behind the vehicle, or placed inside the vehicle near the rearview mirror to record the interior of the vehicle. Taxi, Uber and Lyft drivers like the ability to record what’s going on inside the vehicle.
Another feature available in premium cameras is the inclusion of a Wi-Fi network hotspot. This network connection allows you to communicate with the camera system using your smartphone. Some interfaces allow you to download videos from the camera to your phone for sharing. Others include the ability to configure settings on the camera remotely. A few companies even include cloud-based image storage. When you arrive home, you can connect your dashcam to your home Wi-Fi to upload videos.
Parking Mode Recording
Another popular camera option is called Parking Mode. When activated, the camera will operate even after the ignition is turned off. Parking Mode works in different ways for different cameras. Some record at a much lower framerate. Some monitor the image for changes (when a person approaches the vehicle, for example) and only start recording when a change is detected. Parking Mode is a great feature for people worried about someone breaking into or vandalizing their vehicle.
Battery management is an important consideration for dash camera systems that will continue to function after the ignition is turned off. The last thing you want is to have your camera run all night and drain your battery, making it impossible to start your vehicle the next morning. Some cameras have a built-in shutdown circuit that turns the camera off when the battery reaches a selectable voltage. A better solution is to add a dedicated battery for the camera system. A secondary unit reduces wear and tear on the main battery while providing excellent protection.
Let’s Talk About Image Quality
Beyond features, buying a dashcam is similar to buying any other video or still picture camera. The amount of information stored depends on the resolution of the camera system, the quality of the image sensor and the optics (lens quality) of the system. If you want a yes or no answer to who caused an accident, any recording system will work. If you are hoping to read a license plate or phone number from the side of a vehicle, you can never have too much resolution. It’s up to you to decide how much is right for your application.
In addition to resolution, consider image quality. Dash camera systems are hampered because the brightness and contrast required is always changing. The camera needs to function reliably when you are driving toward the sun or at night with only headlights lighting your way. The speed and accuracy with which the camera can adjust to these changes is an important factor in ensuring optimal image quality.
Finally, construction materials and quality are also a consideration. Does the lens assembly use inexpensive plastics that may distort when they get hot or turn yellow after prolonged exposure to the sun, or are the lenses made of glass? It can be very difficult to determine the quality of the internal components of a camera, so be sure to do your research.
Why You Need a Dash Camera
Finally, we should discuss just why it is a great idea to have a dash camera installed in your vehicle. There’s no doubt that a good public shaming on Facebook for someone who cut you off is great entertainment, but the need to protect yourself against fraud and false accusations is very real. You may have seen a news report of video of someone jumping on the hood of a vehicle stopped at red light and claiming the driver hit them. Believe it or not, this does happen. Another popular scam is for a driver to back their vehicle into a stopped car or truck while at a red light. The driver of the offending vehicle will claim that you drove into them. One of the latest scams involves drivers being flagged down by a person on the side of the road. The person will claim they are out of gas and offer supposedly expensive jewelry as collateral in exchange for some money to get gas. If you decide to stop, be sure to let the person know you have a dashcam recording everything, including their license plate.
Protect Yourself with a Dash Cam
Before you buy an inexpensive dashcam system online, drop by your local mobile enhancement retailer and ask about the features of the products they offer. More often than not, you will find much better performance and reliability from a premium product. You only get one chance to record an important event, so make sure you capture all the information you want or need.
This article is written and produced by the team at www.BestCarAudio.com. Reproduction or use of any kind is prohibited without the express written permission of 1sixty8 media.
Did you know that teenage drivers are three times more likely to be involved in a motor vehicle accident than those who are 20 or older? With their relative lack of experience and the constant bombardment of distractions, it’s no wonder that young people are at risk. The aftermarket mobile electronics industry offers a wide variety of systems and solutions that can protect teenage drivers.
While it’s certainly best practice to focus exclusively on the task of driving when behind the wheel, now and then, we need to take an important phone call. Bluetooth hands-free communication became a life-saver in the late 2000s, allowing a driver to talk with someone without having to hold the phone.
For the ultimate in smartphone integration, an aftermarket multimedia receiver with Apple CarPlay or Android Auto adds a wide variety of communication, information and entertainment options that can be accessed using voice commands. By simply pressing and holding a button on your steering wheel, you can ask these systems to place a phone call, send a text message, or search for an address and provide navigation instructions. The voice recognition technology built into a smartphone allows the driver to keep their eyes on the road and mirrors to ensure he or she is safe.
A backup camera system uses a compact camera to let you see an image of anything behind the vehicle. The image from the camera can be displayed on many factory-installed infotainment systems, a new rearview mirror with a built-in screen or an aftermarket multimedia receiver. The image appears automatically as soon as you put the transmission into reverse, so you don’t have to remember to press any buttons. Many video systems will support a secondary camera that faces forward on the vehicle. These second cameras are a great option for trucks, vans and SUVs whose large dimensions make them difficult to park.
One of the biggest challenges for a new driver is traveling on the freeway. Keeping track of the position of cars and trucks around one’s vehicle can be very difficult. An aftermarket blind-spot monitoring system lets you know when someone is driving beside you and can dramatically reduce the chance of changing lanes when someone is in your way.
The second option for blind-spot monitoring is a camera system. In these systems, cameras mounted underneath your rear vision mirrors display an image of the area beside your vehicle when you activate the turn signal. Just like the backup camera systems, there are many options available to display the image from the cameras.
If you are looking for the absolute state-of-the-art in protection, look into the Mobileye series of products. The Mobileye 660 uses a precisely calibrated camera to monitor the area in front of the vehicle and alert the driver when you are leaving your lane, approaching another vehicle too quickly, or at risk of colliding with a vehicle or pedestrian approaching from the side. This is the same technology that Tesla uses in its AutoPilot system.
Another great option for a younger driver is to install a dash cam. A 
The last option to consider is a 
In a nutshell, a DSP uses a microcontroller that is designed specifically to manipulate audio signals in the digital domain. Pretty much all of the DSP devices on the market include crossovers, equalizers and signal delay features that we can use to optimize the performance of your sound system.
At the simplest level, a DSP can be considered a glorified yet extremely precise tone control. When you combine the features of a processor with measurements from a real-time analyzer, a properly trained technician can dramatically improve the tonal balance and accuracy of your audio system. Vocals and instruments will sound more as though you are in the presence of a live performance as opposed to listening to a recording. Expert technicians can use stereo equalization to improve the staging and imaging characteristics of your sound system, helping to increase the realism of the listening experience further.
Let’s continue with our three-way system example. In many systems, the tweeters are mounted at the top of the door, in the sail panel, in the dash or on the A-pillar. Midrange drivers in a system like that are typically 6.5 inches in diameter and are installed in the factory door location. Finally, woofers typically require an enclosure and are mounted in the trunk, cargo area or under the rear seat of a pickup truck. The distance between the listener and each speaker is different, as is the difference between the left and right speakers. These pathlength differences result in us hearing the closest speaker first, which makes our minds think that that is the source of the majority of what we are hearing.
Well, yes and no. Good quality processors start around $400 plus installation and require at least an hour to configure in most vehicles. If you have a complex multi-channel system, you may need a DSP with more input and output channels and additional time to configure the system in your vehicle.
If you are like most people, you may think that your local car stereo shop specializes in custom audio systems, speaker replacements and, if they have marketed themselves well, remote car starter installations. The reality is, many mobile enhancement retailers offer a variety of automotive enhancement services that extend well beyond audio system sales and service. Let’s have a look at some of the service options that don’t get talked about as often. (Editor’s note: Not all of these services are available at every mobile enhancement retailer.)
Many new cars and trucks come from the dealership with advanced collision avoidance technologies. The most basic is a rear-vision camera system or parking sensor system that can alert you to the presence of an object or person while maneuvering your vehicle. If your vehicle doesn’t have a backup camera or parking sensors, a system can be added quite easily.
In the same vein as the parking sensors, an aftermarket blind-spot monitoring system will alert you to the presence of a vehicle or object beside or just behind yours. When an object enters this space, a small indicator will illuminate to alert you to an object in your blind spot. If you activate the turn signal, an audible warning will be produced to let you know that someone is there.
If you have an older vehicle or are interested in changing the look of your interior, your local mobile electronics specialist retailer can provide you with a complete custom interior. Companies like Katzkin, Leatherseats.com and Roadwire offer vehicle-specific seating upholstery in a variety of colors and patterns, including your choice of thread color. They can often embroider a logo into the upholstery if you wish. Many shops can also swap out the carpet in your vehicle with a new custom-molded piece in a variety of colors to complete the transformation.
Who better to install aftermarket 
A variety of new vehicles are still available without cruise control. Whether you have a classic car with a carburetor, a new vehicle with drive-by-wire throttle or something in between, aftermarket cruise control solutions are available to make your next long-distance trip a lot more comfortable.
Are you in the market for a set of side-steps, a new toolbox for the truck bed, a new tonneau cover or an off-road-ready grille guard? Drop by your local mobile enhancement retailer. In addition to being experts at automotive electrical systems, most shops have the tools and experience required to install a variety of truck accessories.
If you want to know where your vehicle or fleet of vehicles is at all times, a 
Do you have a power window that won’t roll down, a door that doesn’t lock when you press the button on your remote, or an intermittent instrument cluster? The advanced troubleshooting experience that most mobile electronics technicians possess far exceeds that of some dealership service centers. If there is something electrical or electronic not working on your vehicle, drop by and see if they can help.
If you live in a state or province that allows the use of radar detectors, the team at your local car stereo shop is far and away the best choice to integrate a premium system into your vehicle. Custom installed radar detectors and laser defense systems provide early warning against police radar and can delay laser measurement devices from obtaining a speed reading.
Having the windows of your vehicle tinted does a lot more than simply change the style of your vehicle. Window films block almost all of the ultraviolet energy from the sun to protect the occupants from accelerated skin aging. Premium films offer infrared rejection properties that help to keep the interior of your vehicle cooler. Window tint can also make your vehicle safer. If you get into an accident, the resulting tiny pieces of glass will remain adhered to the film rather than flying across the vehicle. Finally, window tint can help to reduce crimes of opportunity. If someone can’t see the contents of your vehicle, there is less reason for them to break in.
Many retailers offer automotive accessories like floor mats. One of the most popular brands in this category is WeatherTech. Their premium Floor Liner solution features a high-quality protective mat that is molded to the floor of your vehicle. The mat extends up the firewall and the center console to protect your carpet from damage, dirt and salt stains. WeatherTech also offers side window deflectors, mud flaps, bug deflectors and much more. Even if your local retailer doesn’t carry the WeatherTech brand, they should be able to source a solution to keep your vehicle looking great.
Are you looking for a set of lowering springs, a computer programmer or maybe a supercharger or turbo kit? Many mobile electronics retailers have technicians available to enhance the performance of your vehicle. A bolt-on exhaust, cold-air intake, high-flow air filter or throttle body spacer can provide your vehicle with a little extra power and may improve your gas mileage at the same time.
When it comes to creating an audio system that sounds amazing, incorporating a digital signal processor into the system gives your installer the tools required to compensate for the majority of the limitations that vehicles impose. To maximize the benefit, a digital signal processor system design needs to take the features and benefits of a processor into consideration. In this article, we are going to explain some of the key differences between a system with and without a digital signal processor.
A digital signal processor, also called a DSP, is an audio processor that uses a microcomputer to make adjustments to a signal in the digital domain. In a stand-alone processor, the audio signal from the source unit is converted to a digital data stream using an analog-to-digital converter. Once in the digital domain, the processor can equalize, filter and even delay the signal. Most processors have six or more output channels to provide us with the ability to send different signals to dedicated amplifier channels. Each channel has a digital-to-analog converter that provides a conventional analog audio output.
