What does chtrack mean in a car?

[LaAurora]

TRACK is commonly used in audio systems, referring to a track (often indicating the sequence number of a song, for example, the first song in the directory is Track1). Speakers are crucial components that determine the audio performance inside the car cabin and serve as the terminal of the car audio system. To enjoy stereo effects, two or more speaker systems are used in the car. The technical indicators of car audio include: 1. Output power: Most current head units indicate music power, ranging between 40W to 60W, and the power should not be too high. 2. Frequency response: The human ear can hear frequencies ranging from 20Hz to 20KHz, so this indicator should at least cover this range, and the wider the better. 3. Signal-to-noise ratio: This refers to the ratio of the music signal to noise. Generally, high-end car audio systems have a ratio above 90DB, and the higher the value, the better. 4. Harmonic distortion: This indicator reflects the fidelity of sound reproduction. The lower the value, the higher the fidelity, and the better the audio effect.