Circuit arrangement for processing audio signals

摘要

In a circuit arrangement for processing audio signals, transmitted in at least two channels, having in each case one demodulation arrangement (1, 2) for each channel for supplying in each case one demodulated audio signal (at 13, 14) and a dematrixing circuit (19) for recovering reproduced signals (at 20, 21) from the demodulated audio signals (at 13, 14), a calibration capability is provided in a simple, easily integrated manner, by means of which calibration capability the signal path remains unaffected in that the demodulation arrangements (1, 2) are constructed as synchronous demodulators fed by one direct current each and the amplitudes of the demodulated audio signals (at 13, 14) can be adjusted by means of the direct feed current (at 22, 23) of the associated synchronous modulators (1, 2), in such a manner that crosstalk interference between the reproduced signals (at 20, 21) is minimised. <IMAGE>