FAQ - Frequently asked questions

A soundbar (or "sound projector") is an elongated speaker that connects directly to the TV. Characteristic of soundbars are their flat design, which makes it possible to put the speaker right in front of or below the TV set.

The ISO value controls the sensitivity of the sensor in a camera. The higher the ISO value is set, the brighter will be shot images. At the same time, the image noise increases, which suffers the quality of the photo. From which ISO value the image noise increases depends on the camera model.

An Actioncam is a digital, small, mobile camcorder. Actioncams are usually very sturdy and often waterproof, making them ideal for extreme sport recordings (such as parachuting, diving, bungee, and the like).

The shutter speed is the exposure time, which is formed by a camera shutter. It is either purely mechanical or electronically controlled.

Dashcams or car cameras are small cameras that are mounted either on the dashboard or more often on the windshield of a car. They record the rides of the car so that incidents in accidents, e.g. easier to understand.

As a hobby photographer you are already driving quite well with a camera with 7 megapixels. More detailed photographers should bet on a model with 12 or more megapixels.

Noise reduction is a noise reduction method (also noise filter or noise filter). Modern headphones use the method to minimize noise and other noise from the audio signal.

On-ear describes headphones that sit on the auricle and are usually held in position by means of a headband. In-ear headphones, on the other hand, are worn in the ear canal.

5.1 or surround sound 5.1 describes multi-channel sound systems, where five main channels and a separate low-frequency effect channel are available. For example, a Home Cinema system with 5.1 sound consists of three front speakers (Front Left, Center, Front Right), two rear speakers (Surround Left, Surround Right), and a subwoofer for the bass. The distributed speakers give the viewer a more spatial sound experience.

7.1 describes multi-channel sound systems, where seven main channels and a separate low frequency effect channel are available. 7.1 Sound systems consist of three front speakers (Front Left, Center, Front Right), four rear speakers (Surround Left, Surround Back Left, Surround Back Right, Surround Right) and a Subwoofer for low tones.

Clipping is the effect that occurs when the level of an audio signal source is too high for processing by the speakers. The excess signal components are then cut off and the sound quality is characterized by noise and distortion.

The impedance in ohms indicates the resistance of a headphone or speaker. The impedance indicates how easily a headphone or a loudspeaker can be driven by an amplifier. A headphone with a low impedance of e.g. 32 ohms requires less power to achieve the same volume level than a high-impedance headset (e.g., 600 ohms).

A quadrocopter is a drone operated by 4 rotor blades. Two of the red leaves rotate clockwise and the other two rotates counterclockwise.

An octocopter is a drone with eight rotor blades. Four propellers rotate clockwise here and the other four rotors in the other direction.

A hexacopter is a drone with six rotors. Three rotors turn clockwise and the remaining rotors rotate counterclockwise.