Audio Function
The audio system is equipped with the following functions. Each function is operated with multifunction switch, preset switch or steering switch. Operation status of audio is indicated at display unit.
| FUNCTION |
|---|
| AM/FM radio |
| Satellite radio |
| CD |
| USB connection function |
| Active noise control system |
OPERATING SIGNAL
Audio system operation can be performed with multifunction switch, preset switch or steering switch.
- Operating signal is transmitted to AV control unit with AV communication when it is operated by multifunction switch or preset switch. The disk ejection operating signal is performed by hardwire.
- Operating signal is transmitted to AV control unit with steering switch signal when it is operated by steering switch.
SCREEN DISPLAY
- Switching of display is performed with serial communication between display unit and AV control unit.
- The image signal to display operating condition is performed with RGB image signal, RGB area signal and RGB image synchronizing signal.
AM/FM RADIO MODE
- AM/FM radio tuner is built into AV control unit.
- Sound signals (AM/FM radio) are received via window antenna.
- AM/FM main antenna signal is amplified via antenna amp. and FM sub antenna signal is transmitted to AV control unit.
- AV control unit outputs sound signal is input to active noise control unit, and active noise control unit outputs to each speaker.
SATELLITE RADIO MODE
- Satellite radio tuner is controlled by communication signal and request signal with AV control unit.
- Sound signal (satellite radio) is received by satellite radio antenna and transmitted to AV control unit via satellite radio tuner. AV control unit is output the sound signal (satellite radio) to active noise control unit.
CD MODE
- CD function is built into AV control unit.
- AV control unit outputs the sound signal to active noise control unit, and active noise control unit output the signal to each speaker during playback.
USB CONNECTION FUNCTION
- Connecting iPod® or USB memory allows the driver to play iPod® music files or USB memory-stored music files.
- Sound signals of music files stored in iPod® or USB memory is transmitted from the USB connector to the AV control unit. The AV control unit transmits the sound signals to the each speaker via active noise control unit.
- iPod® is recharged when connected to USB connector.
- Only files that meet the following conditions will be played.
Music file File format "MP3", "WMA" File extension ".mp3", ".wma" Maximum file size 2 GB
NOTE:
- iPod® is a trademark of Apple inc., registered in the U.S. and other countries.
- Image signals cannot be received from iPod® or USB memory.
- Use the enclosed USB harness when connecting iPod® to USB connector.
ACTIVE NOISE CONTROL SYSTEM
- The active noise control system outputs an antiphase sound from the speakers (front door speaker and rear door speaker) against unpleasant engine booming noise (2nd and/or 3rd engine rev at 700 - 5000 RPM) and reduce sound pressure level by the interference with engine booming noise.
- The active noise control unit receives an engine speed signal from ECM and receives microphone signals from the front and rear microphone.
- The active noise control unit receives a door state signal. The active noise control system does not operate with any door open.
- Based on signals detected by the front and rear microphones, the active noise control unit generates an antiphase sound (microphone signal) weakening interior engine booming noise in real time according to a unique algorithm*1 by a micro computer built in the active noise control unit. Then, the active noise control unit mixes the antiphase sound with a sound signal received from the AV control unit to transmit the mixed sound signal to each speaker.NOTE:
* 1: Algorithm means a fixed procedure to solve a question.