The invention relates to a method for improving a stereo audio signal of an FM stereo radio receiver. The method comprises determining one or more parametric stereo parameters based on the stereo audio signal in a frequency-variant or frequency-invariant manner. Preferably, these PS parameters are time- and frequency-variant. Moreover, the method comprises generating the improved stereo signal based on a first audio signal and the one or more parametric stereo parameters. The first audio signal is obtained from the stereo audio signal, e.g. by a downmix operation.

The invention relates to a method for improving a stereo audio signal of an FM stereo radio receiver. The method comprises determining one or more parametric stereo parameters based on the stereo audio signal in a frequency-variant or frequency-invariant manner. Preferably, these PS parameters are time- and frequency-variant. Moreover, the method comprises generating the improved stereo signal based on a first audio signal and the one or more parametric stereo parameters. The first audio signal is obtained from the stereo audio signal, e.g. by a downmix operation.

A radio receiver includes: a plurality of tuners that receives a broadcast signal through separate antennas; phase shifters, an adder, and a phase diversity processing unit for adjusting and compositing a phase of an output signal of each tuner of the tuners; a demodulating unit that performs demodulation processing to an input signal; a noise component detecting unit that detects a predetermined noise component included in composited output of phase diversity; and a switching processing unit that sets the signal before the composition of the phase diversity to be an object to which the demodulating unit performs the demodulation processing when the detected noise component exceeds a threshold value, and sets the signal after the composition of the phase diversity to be the object to which the demodulating unit performs the demodulation processing when the noise component has not exceeded the threshold value.

Suppression of interference across transceivers integrated on a single semiconductor chip. An example of a method of reducing noise in a transceiver includes introducing an adjustable time delay into a signal between a first section of a signal path into which noise may be introduced and a second section of the signal path into which noise may be introduced. The method also includes selectively adjusting the time delay and signal polarity to improve a signal-to-noise metric of the transceiver. An example of the transceiver includes a transmitter and a receiver. The transceiver also includes an adjustable time delay between a first section of a transceiver signal path into which noise may be introduced and a second section of the transceiver signal path into which noise may be introduced and circuitry for reducing noise by adjusting a value of the time delay.

Suppression of interference across transceivers integrated on a single semiconductor chip. An example of a method of reducing noise in a transceiver includes introducing an adjustable time delay into a signal between a first section of a signal path into which noise may be introduced and a second section of the signal path into which noise may be introduced. The method also includes selectively adjusting the time delay and signal polarity to improve a signal-to-noise metric of the transceiver. An example of the transceiver includes a transmitter and a receiver. The transceiver also includes an adjustable time delay between a first section of a transceiver signal path into which noise may be introduced and a second section of the transceiver signal path into which noise may be introduced and circuitry for reducing noise by adjusting a value of the time delay.

A radio apparatus for a vehicle and a control method thereof. An aspect of the present disclosure provides a method of controlling a vehicle radio apparatus, the method comprising: checking a program title of a program of Internet radio being listened to; searching for a frequency of a first analog radio with the program title, the first analog radio being a radio broadcast transmitted by a radio station; checking an electric field strength of the first analog radio at the frequency; modulating the Internet radio to a second analog radio when the electric field strength is less than a threshold; and transmitting the second analog radio.

A radio apparatus for a vehicle and a control method thereof. An aspect of the present disclosure provides a method of controlling a vehicle radio apparatus, the method comprising: checking a program title of a program of Internet radio being listened to; searching for a frequency of a first analog radio with the program title, the first analog radio being a radio broadcast transmitted by a radio station; checking an electric field strength of the first analog radio at the frequency; modulating the Internet radio to a second analog radio when the electric field strength is less than a threshold; and transmitting the second analog radio.