Method for optimizing the stereo reception for an analog radio set and associated analog radio receiver

摘要

A method of optimizing stereo reception for an analog radio by applying the demodulated right sound signal (SD) and left sound signal (SG) as input to a decorrelation module having a variable decorrelation rate. The decorrelation rate of the decorrelation module is modified as a function of the reception quality coefficient “alpha” provided by the radio. The decorrelation module applies a higher decorrelation rate for a smaller reception quality coefficient “alpha” and applies a lower decorrelation rate for a larger reception quality coefficient “alpha. Also, a module for generating high-pitched sounds to recreate the high-frequency component (SHF) of the right or left sound signals which has been removed in the event of poor reception.

主权项

1. A method for optimizing the stereo reception in an analog radio set, comprising the steps of:
selecting a radio channel from a plurality of frequency channels; demodulating signals in the selected radio channel to obtain a demodulated right sound signal and a demodulated left sound signal; decorrelating the demodulated right sound signal and the demodulated left sound signal by a decorrelating module to obtain signals de-correlated relative to one another respectively called an optimized right sound signal and an optimized left sound signal, the de-correlating module having a variable de-correlation ratio; providing an alpha factor of reception quality by the radio set; and modifying the decorrelation ratio of the decorrelating module inversely based on the alpha factor of reception quality such that the decorrelating module such that the decorrelation module increases the decorrelation ratio applied with decreasing alpha factor of reception quality and decreases the decorrelation ratio applied with increasing alpha factor of reception quality.