METHOD FOR SYNTHESIZING A DIGITAL AUDIO SIGNAL, DIGITAL AUDIO SIGNAL SYNTHESIS DEVICE, DEVICE FOR RECEIVING A DIGITAL AUDIO SIGNAL, AND MEMORY OF A DIGITAL AUDIO SIGNAL SYNTHESIS DEVICE

摘要

method for synthesizing a digital audio signal, digital audio signal synthesis device, device for receiving a digital audio signal, and memory of a digital audio signal synthesis device the present invention proposes the synthesis of a signal consisting of consecutive blocks. more specifically, when receiving such a signal, it proposes to replace, by synthesis, the missing or wrong blocks of this signal. it proposes to this end an attenuation of the supervocation during the generation of a signal synthesis. more specifically, a vocalized excitation is generated from the pitch period (t) estimated or transmitted to the preceding block, eventually applying a correction of more or less a sample of duration of this period (counted in number of samples), by constitution of groups (a ', b', c ', d') of at least two samples and by inversion of the positions of the samples in the groups, randomly (b ', c') or in a forced way. a superharmonicity is thus broken in the generated excitation and, thus, the supervocalization effect in the synthesis of the generated signal is attenuated.