Abstract: In order to improve the large signal handling capability of a logarithmic amplifier comprising amplifier stages successively performing their limiting actions in response to an increase of the input signal, and an adder stage for the output signals of the amplifier stages, the signal of the amplifier stage which is the last to perform its limiting action in response to an increase of the signal is amplified by a value which is higher than that of the signals of the other amplifier stages.

Abstract: Arrangement for receiving TV signals containing left and right stereo sound signals, a first sound carrier being frequency-modulated by the sum signal (L+R) of the two stereo sound signals and the second carrier being frequency-modulated by twice the right stereo sound signal (2R), comprising a first FM-demodulator for demodulating the sum signal from the first sound carrier and a second FM-demodulator for demodulating twice the right stereo sound signal from the second sound carrier, a matrix circuit for deriving at least the left stereo sound signal from the sum signal and twice the right stereo sound signal and a left and right sound channel for the respective left and right stereo sound signals, the possibility of a simple mono-stereo signal control being obtained such as it is already known for prior art stereo radio receivers in addition to an advantageous noise distribution over the left and the right stereo sound channels.