1. Introduction
FM1288 is the new generation of Fortemedia’s system-on-chip (SOC) solution that provides
high performance voice processing for automotive hands-free applications. It delivers state
of the art single-microphone and dual-microphone noise suppression with acoustic echo
cancellation technologies for in-vehicle and personal navigation devices (PND) based handsfree
voice communications.
1.1 Overview
Incorporating the latest Fortemedia technologies for removing ambient noise and acoustic
echoes, the FM1288 preserves voice naturalness for greater speech intelligibility in a variety
of noisy automotive enviroments. Designed to be compatible with a wide range of host
processors and blue-tooth devices, the FM1288 voice processor is designed for easy system
integration.
The FM1288 provides system designer the flexibilities to customize each processing module
and fine-tune the algorithms to the unique needs and acoustic path characteristics of the
manufacturer’s automotive model cabin or handsfree communication device.
1.2 Key Features
 Highly integrated SOC
o Digital Signal Processor(DSP) with Hardware Accelerators, RAM, and ROM
o 3 ADC (Analog to Digital Converter)
o 2 DAC (Digital to Analog Converter)
o Differential I/O on all analogs to improve noise immunity
o 2 On-chip analog microphone inputs
o IIC-Compatible Serial (SHI) and UART control interface to host processor
o IIS-Compatible and PCM data interface to host or Bluetooth processor
o Built-in PLL supports highly flexible clocking input
o Can operate as co-processor or as standalone processor
 High performance
o Advanced algorithms for acoustic echo cancellation and noise reduction
o Robust full-duplex for in-vehicle applications
o Preserves voice naturalness and effective in automotive environment
o Wideband (HD Voice) and narrowband voice processing
o Bright Voice Enhancement (BVE) for downlink listening improvement
o Dynamic Range Control (DRC) for range control
o Equalization (EQL) on uplink and downlink voice paths
o Line in and Line out signal path Automatic Gain Control (AGC)
o Configurable processing modules performance
o Non-invasive run-time performance tuning via UART and IIC-compatible port
o Run time switching between processing mode and various by-pass modes
o Dual-microphone enhanced noise-suppression mode