Circuit for audio playback and for hands-free operation in a motor vehicle

Abstract

The invention relates to a circuit having at least a first electroacoustic transducer (LSL, LSR) for converting electric signals into acoustic signals, a second electroacoustic transducer (MIC) for converting acoustic signals into electric signals, a program-controlled signal processing device (SPU) coupled to said transducers (LSL, LSR, MIC) to process the signals it supplies to the control device and a program storage (ROM) to store a program (AUM) for audio playback of a program (HFM) for hands-free operation for the signal processing device (SPU), wherein, the program (HFM) for hands-free operation is loaded in the signal processing unit and executed by latter in hands-free mode while the program (AUM) for audio playback is loaded in the signal processing device (SPL) and executed by the latter in the audio playback mode.

Dependencies are inferred from the claim text.