Vehicle Glossary

# Vehicle Glossary

## Terms with real contextual definitions (from local Vehicle Audio Architecture data)

**MOST (Media Oriented Systems Transport)** — Digital audio bus using fibre-optic cable, observed in Mercedes-Benz C-Class (W206) architecture: 'Tín hiệu số qua MOST' — signal type is Digital, transported via MOST fibre-optic cabling, feeding a Burmester digital amplifier. _(Source: Vehicle_Audio_Architecture_v1.xlsx, AUDIO-MB-C300-AMG row)_

**MBUX** — Mercedes-Benz's integrated head unit/infotainment system — noted as a single-piece unit soldered to the main board, NOT removable/replaceable by traditional aftermarket methods on any current C-Class trim; only wireless CarPlay dongle or OEM software upgrade are viable paths. _(Source: Vehicle_Audio_Architecture_v1.xlsx, Technical Notes, W206 architecture)_

**SCN coding** — Mandatory dealer/technician-only coding step required when replacing or modifying the Burmester amplifier on Mercedes-Benz C-Class vehicles with that system. _(Source: Vehicle_Audio_Architecture_v1.xlsx, AUDIO-MB-C300-AMG row)_

**Hi-Level (High-Level input)** — Referenced as 'Không áp dụng — hệ thống dùng tín hiệu số qua MOST' for MOST-equipped vehicles (Hi-Level input is not applicable when the OEM system is fully digital/MOST-based) — implying Hi-Level applies to non-MOST, analog-signal vehicles instead. _(Source: Vehicle_Audio_Architecture_v1.xlsx, AUDIO-MB-C300-AMG row)_

## Terms referenced across vehicle data with no local explanatory context

These terms appear as column headers or short field values in Vehicle_Master_Data_v1.xlsx / Vehicle_Audio_Architecture_v1.xlsx, but no local document explains what they mean in Freude's own words. Definition: PENDING VERIFICATION for each — not written from general automotive-audio knowledge, per 'không suy đoán'.

- A2B
- ANC (Active Noise Cancellation)
- DSP
- Low-Level
- Optical
- CAN (bus)
- OEM DSP
- OEM Amplifier