Abstract: The invention relates to a method for decoding a received RDS signal (R), comprising the following steps: determining an extreme value from among the absolute values of the RDS signal (R) integrals obtained in an elementary range interval (Te), and sliding from a starting point in at least one slide range (Tg); and extracting a binary pattern “0” if the extreme value is a minimum value, and a binary pattern “1” if the extreme value is a maximum value.

Abstract: A method for attenuating electromagnetic interference in an AM radio signal received by a radio receiver, so as to produce a filtered radio signal Zn defined by Zn=WnTYn at the time n, where Yn is a vector the components of which correspond to the radio signal received by a first antenna and to a second signal received by a second antenna connected to the source of interference, respectively, and Wn is a vector the components of which correspond to the complex coefficients of an impulse response filter, with: Zn=w1,n·y1,n+w2,n·y2,n, by the introduction of a correlation between the real and imaginary parts of the complex coefficients.

Abstract: The present invention relates to an adaptive filtering method for an amplitude-modulated radio signal (AM), the radio signal having a bandwidth, the method comprising: ? transforming the radio signal into baseband, ? measuring the level of noise and/or detecting the presence of an adjacent radio signal (A), of a first side of the bandwidth, ? selecting or not selecting a first filter (F) numbered X, from among N first filters capable of cutting the amplitude-modulated radio signal of the first side of the bandwidth, ? if a first filter numbered X is selected and applied to the amplitude-modulated radio signal transformed into baseband, the automatic selection of a second filter (F?) numbered Y, Y being greater than or equal to X, from among N second filters, capable of cutting the amplitude-modulated radio signal from the opposite side to the first side of the bandwidth.

Abstract: A method for attenuating electromagnetic interference in an AM radio signal received by a radio receiver, so as to produce a filtered radio signal Zn defined by Zn=WnTYn at the time n, where Yn is a vector the components of which correspond to the radio signal received by a first antenna and to a second signal received by a second antenna connected to the source of interference, respectively, and Wn is a vector the components of which correspond to the complex coefficients of an impulse response filter, with: Zn=w1,n·y1,n+w2,n·y2,n, by the introduction of a correlation between the real and imaginary parts of the complex coefficients.

Abstract: A method for filtering an amplitude-modulated radio signal, the radio signal having a bandwidth, the method including: transforming the radio signal into baseband, determining a frequency range close to the center frequency, measuring the level of the radio signal, by frequency steps, in the frequency range, determining a standardized modulation level in the radio signal, corresponding to the sum of the level measurements by frequency steps, in the frequency range under consideration, divided by the measurement of the level of the radio signal in baseband calculated around the center frequency, comparing the standardized noise level thus determined with a predetermined threshold, on the basis of the comparison, choosing a first filter applied to the amplitude-modulated radio signal.

Abstract: The present invention relates to an adaptive filtering method for an amplitude-modulated radio signal (AM), the radio signal having a bandwidth, the method comprising: transforming the radio signal into baseband, measuring the level of noise and/or detecting the presence of an adjacent radio signal (A), of a first side of the bandwidth, selecting or not selecting a first filter (F) numbered X, from among N first filters capable of cutting the amplitude-modulated radio signal of the first side of the bandwidth, if a first filter numbered X is selected and applied to the amplitude-modulated radio signal transformed into baseband, the automatic selection of a second filter (F?) numbered Y, Y being greater than or equal to X, from among N second filters, capable of cutting the amplitude-modulated radio signal from the opposite side to the first side of the bandwidth.

Abstract: A method for filtering an amplitude-modulated radio signal, the radio signal having a bandwidth, the method including: transforming the radio signal into baseband, determining a frequency range close to the center frequency, measuring the level of the radio signal, by frequency steps, in the frequency range, determining a standardized modulation level in the radio signal, corresponding to the sum of the level measurements by frequency steps, in the frequency range under consideration, divided by the measurement of the level of the radio signal in baseband calculated around the center frequency, comparing the standardized noise level thus determined with a predetermined threshold, on the basis of the comparison, choosing a first filter applied to the amplitude-modulated radio signal.

Abstract: The invention relates to a method for decoding a received RDS signal (R), comprising the following steps: determining an extreme value from among the absolute values of the RDS signal (R) integrals obtained in an elementary range interval (Te), and sliding from a starting point in at least one slide range (Tg); and extracting a binary pattern “0” if the extreme value is a minimum value, and a binary pattern “1” if the extreme value is a maximum value.