Abstract: A receiving device includes: a frequency mixer that converts a frequency of a reception signal to a baseband; an envelope demodulator; an upper sideband demodulator; and a lower sideband demodulator. Each of the envelope demodulator, the upper sideband demodulator and the lower sideband demodulator demodulates an output from the frequency mixer. The receiving device further includes: a first adder that adds an output from the envelope demodulator and an inverted output obtained by inverting an output from the upper sideband demodulator; a second adder that adds the output from the envelope demodulator and an inverted output obtained by inverting an output from the lower sideband demodulator; and a third adder that adds the output from the envelope demodulator, an inverted output obtained by inverting an output from the first adder, and an inverted output obtained by inverting an output from the second adder, to output a demodulation signal.

Abstract: A receiving device includes an equalization processor including multiple delay equalizers. The equalization processor is configured to: obtain a first error between an output of one specific tap in the multiple delay equalizers and a predetermined reference value, and calculate a first weight with which the first error is minimized; cause a calculation result of the first weight to be reflected in all taps in the multiple delay equalizers except the specific tap, obtain a second error between outputs of all taps in the multiple delay equalizers and the predetermined reference value, and calculate a second weight with which the second error is minimized; and update coefficients of all taps in the multiple delay equalizers at the same timing using the calculation result of the first weight and a calculation result of the second weight, and calculate an output of the equalization processor.

Abstract: A receiving device includes an equalization processor including multiple delay equalizers. The equalization processor is configured to: obtain a first error between an output of one specific tap in the multiple delay equalizers and a predetermined reference value, and calculate a first weight with which the first error is minimized; cause a calculation result of the first weight to be reflected in all taps in the multiple delay equalizers except the specific tap, obtain a second error between outputs of all taps in the multiple delay equalizers and the predetermined reference value, and calculate a second weight with which the second error is minimized; and update coefficients of all taps in the multiple delay equalizers at the same timing using the calculation result of the first weight and a calculation result of the second weight, and calculate an output of the equalization processor.

Abstract: A receiving device includes: a frequency mixer that converts a frequency of a reception signal to a baseband; an envelope demodulator; an upper sideband demodulator; and a lower sideband demodulator. Each of the envelope demodulator, the upper sideband demodulator and the lower sideband demodulator demodulates an output from the frequency mixer. The receiving device further includes: a first adder that adds an output from the envelope demodulator and an inverted output obtained by inverting an output from the upper sideband demodulator; a second adder that adds the output from the envelope demodulator and an inverted output obtained by inverting an output from the lower sideband demodulator; and a third adder that adds the output from the envelope demodulator, an inverted output obtained by inverting an output from the first adder, and an inverted output obtained by inverting an output from the second adder, to output a demodulation signal.

Abstract: An analog radio receiver can change a noise suppression parameter appropriate for a sound to be reproduced. The analog radio receiver includes a sound category determining unit for determining a category of a sound to be reproduced from an input signal, and a selecting unit for selecting, on the basis of the category determined by the sound category determining unit, a noise suppression parameter such as passband of the IF filter, blend value of the stereo blend unit, high-cut value of the high-cut unit, response rate of the soft mute unit, and the like, wherein the IF filter, the stereo blend unit, the high-cut unit, the soft mute unit suppress noises of the input signal on the basis of the noise suppression parameter selected by the selecting unit.

Abstract: An analog radio receiver change a noise suppression parameter appropriate for a sound to be reproduced. The analog radio receiver includes a sound category determining unit for determining a category of a sound to be reproduced from an input signal, and a selecting unit for selecting, on the basis of the category determined by the sound category determining unit, a noise suppression parameter such as passband of the IF filter, blend value of the stereo blend unit, high-cut value of the high-cut unit, response rate of the soft mute unit, and the like, wherein the IF filter, the stereo blend unit, the high-cut unit, the soft mute unit suppress noises of the input signal on the basis of the noise suppression parameter selected by the selecting unit.