A variety of ways a system attempts to prevent theft, including a detachable faceplate, a masking face plate, or systems that will not operate if disconnected from the battery without a custom code.
Anti-shock Memory
A feature of DVD, CD and Mini Disc players that stores audio data in a memory buffer that is output if the main signal mistracks.
Changers
A CD, Mini Disc, DVD or MP3 unit that handles more than one disc--a multiple player.
Digital/Analog Tuner
An analog tuner uses conventional circuitry with a tuning knob or thumbwheel and pointer to show you the frequency to which you are tuned. A digital tuner, more accurately a synthesized tuner, permits using a digital frequency read-out and presetting radio stations for touch tuning.
Bluetooth Function
Bluetooth is an open wireless technology standard for exchanging data over short distances (using short length radio waves) from fixed and mobile devices, creating personal area networks with high levels of security. Today Bluetooth is managed by the Bluetooth Special Interest Group. Using Bluetooth to contact and transfer information is the main phenomenon as seen in car driving and mobile phone. Without any wire or phone bracket, the driver can also control the phone nearby while driving. To use this function, you need to match the mobile phone with the car audio first. Once there is a calling, you can answer only by pressing one key. Use the dial keyboard while you need to give a call. It is safe and convenient especially when you drive on the road.
Direct Access
Using a numeric keypad, you simply press the corresponding key to hear a specific track.
FM Modulation
For someone unwilling to remove their factory installed equipment, an FM modulator takes the audio output of an FM-modulated add-on and generates a radio frequency (RF) signal that is received by your car's FM radio tuner.
Distortion
This is a measurement of the deviation from the original signal to the reproduced signal. Distortion is a harsh sounding artifact that alters, in a negative way, the signal.
Dolby Digital
Formerly AC-3, Dolby Digital is a method developed by Dolby Laboratories to digitally encode up to 5.1 discrete channels of high-fidelity sound in a single digital bitstream. The .1 channel refers to the "low frequency effects" (LFE) channel that carries only low frequency information, which is usually directed to the subwoofer upon playback. The encoded signal can be any number of channels, from a mono signal to the maximum of 5.1 (front right, center, front left, surround right, surround left, subwoofer) although it has now become common to use Dolby Digital to refer to any 5.1 signal.
Auto rear viewing Function
This is designed for automobiles and other vehicles, allowing the driver to see rearward. It is believed that safety is the most important. With this auto rear viewing system, you can easily get to know the situation around your car. While parking, the car can be placed in safety.
Impedance
Impedance is commonly listed from 4 to 8 ohms, with some ranging from 2 to 16 ohms. This is a technical description of the amount of inductive resistance a speaker offers to the flow of electrical signals from a receiver. Under normal circumstances, impedance bears no relation to sound quality, but many receivers need a minimum of 4 ohms to work properly. A good receiver may work with 2 ohms, but other receivers or amplifiers will automatically shut off or blow a fuse. If you intend to use two pairs of speakers in parallel from the same terminals, choose loudspeakers rated at least 8 ohms. Also note that speaker impedance ratings are nominal, meaning that a speaker may actually fall below its rated impedance at some frequencies.
Driver
The element of a speaker that actually produces the sound.
DTS
Stands for Digital Theater Sound and comes from the company of the same name. DTS accomplishes much the same thing as Dolby Digital, but it does so slightly differently. The two systems are incompatible when it comes to decoding, but after the signal is decoded, it is otherwise the same to the receiver, allowing many new receivers to incorporate both. Thus far, DTS has not made much impact on the home market, and minimal software is available that uses the system. The system was originally engineered for movie theaters.
Equalizer
A circuit or program that changes the frequency response of a signal, boosting or cutting selected ranges from the overall response.
Frequency Response
Also listed as Frequency range, is the spectrum of frequencies produced by a product, within a certain tolerance. For example, a frequency response of 30Hz to 18kHz (+/- 3dB) means a product produces all frequencies from 30Hz to 18kHz without dropping or peaking three decibels.
Head Unit
The usable part of a component that is mounted in the dashboard is commonly referred to as a head unit. It controls the components, either internally or remotely installed, such as a changer mounted in the glove compartment or trunk.
Picture-in-picture Function
Picture in Picture (PiP) is a feature of some television receivers and similar devices. One program (channel) is displayed on the full TV screen at the same time as one or more other programs are displayed in inset windows. Sound is usually from the main program only. Picture in Picture is often used to watch one program while waiting for another to start, or advertisements to finish. With (PiP) function of the TOYOTA YARIS DVD, you dont have to worry about missing the programs you want to watch both.
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