Speech coding system and method using bi-directional mirror-image predicted pulses
8 Assignments
0 Petitions
Accused Products
Abstract
There is provided a method of decoding speech data generated from a speech signal. The method comprises receiving the speech data having at least one main pulse in a subframe of the speech data; generating a first predicted pulse, based on the at least one main pulse, on one side of the main pulse in the subframe of the speech data, wherein the first predicted pulse has a lower gain than the main pulse; generating a second predicted pulse, as a mirror image of the first predicted pulse on a reverse time scale, on the other side of the main pulse in the subframe of the speech data; reconstructing the speech signal using the at least one main pulse, the first predicted pulse and the second predicted pulse.
107 Citations
11 Claims
-
1. (canceled)
-
2. A method of decoding speech data generated from a speech signal, the method comprising:
-
receiving the speech data having at least one main pulse in a subframe of the speech data; generating a first predicted pulse, based on the at least one main pulse, on one side of the main pulse in the subframe of the speech data, wherein the first predicted pulse has a lower gain than the main pulse; generating a second predicted pulse, as a mirror image of the first predicted pulse on a reverse time scale, on the other side of the main pulse in the subframe of the speech data; reconstructing the speech signal using the at least one main pulse, the first predicted pulse and the second predicted pulse. - View Dependent Claims (3, 4, 5, 6)
-
-
7. A speech decoder for decoding speech data generated from a speech signal, the speech decoder comprising:
-
a receiver configured to receive the speech data having at least one main pulse in a subframe of the speech data; a first pulse prediction module configured to generate a first predicted pulse, based on the at least one main pulse, on one side of the main pulse in the subframe of the speech data, wherein the first predicted pulse has a lower gain than the main pulse; a second pulse prediction module configured to generate a second predicted pulse, as a mirror image of the first predicted pulse on a reverse time scale, on the other side of the main pulse in the subframe of the speech data; wherein the speech decoder is configured to reconstruct the speech signal using the at least one main pulse, the first predicted pulse and the second predicted pulse. - View Dependent Claims (8, 9, 10, 11)
-
Specification