Definition: Line-in input refers to an audio jack on an audio device, such as a mixer, amplifier, or computer, that is designed to accept audio signals from another source, such as a microphone, musical instrument, or another audio device. These signals are typically at a standardized voltage level, referred to as “line level.”
What is Line-in Input?
A line-in input is an audio input port found on many electronic devices, such as computers, amplifiers, and stereos. It is used to connect external audio devices, such as smartphones, mp3 players, or CD players, to the electronic device in order to play music or other audio.
Line-in inputs are different from other types of audio inputs, such as microphone or instrument inputs, because they are designed to accept a stronger, pre-amplified signal. This means that audio sources that have already been amplified, such as those from a headphone jack or a CD player, can be directly connected to a line-in input without the need for additional amplification.
To use a line-in input, the user must connect an audio cable with the appropriate connector (usually a 3.5mm stereo jack) from the external audio device to the line-in port on the electronic device. Once connected, the external audio can be played through the speakers or headphones connected to the electronic device.
Line-in inputs are commonly used in home theater systems, car audio systems, and computer sound cards. They provide a simple and convenient way to play external audio sources through the electronic device’s speakers or headphones, without the need for additional equipment or complicated setup.
Overall, the line-in input is an important feature found on many electronic devices, providing a versatile and reliable way to play external audio sources.
Related Terms: Audio Signal, Mixer, Amplifier
Usage or Example Sentence: “The DJ plugged the CD player into the line-in input on the mixer to add it to the sound mix.
Cross References: Audio Signal, Mixer, Amplifier
Translated terms: French: Entrée ligne, Spanish: Entrada de línea, German: Line-Eingang
Sources or references: Understanding and Crafting the Mix: The Art of Recording, by William Moylan
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