Audio equipment and a signal processing method thereof

摘要

The present invention relates to an audio equipment (1) and a signal processing method thereof, wherein the mismatches that can occur at the packet boundaries in an audio signal, which is processed in packets by utilizing the missing fundamental phenomenon and which is formed again by the concatenating of these packets, are eliminated.

主权项

1. An audio equipment comprising an analog/digital converter which converts an analog audio signal into a digital audio signal; and at least one processor (3) being operable to separate the digital audio signal into packets, to apply a Fast Fourier Transform (FFT) to these packets, to detect the fundamental frequency or the fundamental frequencies of each packet in sequence; and, wherein the at least one processor being operable after suppressing the fundamental frequency or fundamental frequencies to create missing fundamental effect, which determine the new amplitude values of the harmonics of the fundamental frequency or fundamental frequencies by associating the amplitude of the related harmonic in the previous packet and the amplitude thereof in the packet being processed, with a weight coefficient specific for the frequency of the related harmonic, wherein the weight coefficient varies between 0 and 1.