http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109448745-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G10L19-20 |
| filingDate | 2013-01-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-09-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-09-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109448745-B |
| titleOfInvention | Coding mode switching method and device and decoding mode switching method and device |
| abstract | The embodiment of the invention provides a coding mode switching method, when an ith frame and an (i +1) th frame are respectively in an MDCT (modified discrete cosine transform) and ACELP (echo-coding) coding mode, the MDCT coding is carried out on the ith frame by adopting a predefined window type to obtain MDCT coding information; decoding the ith frame or the coded information of the ith frame and the frames before the ith frame to obtain a decoded signal; and after the historical state of a required filter in an ACELP coding mode is established and updated according to the decoding signal, the part of the input signal of the ith frame and the part of the input signal of the (i +1) th frame, the ACELP coding processing is carried out on the input signal of the length of the subsequent frame. The embodiment of the invention provides a device for switching coding modes from MDCT to ACELP. The embodiment of the invention also provides a method and a device for switching the decoding mode from the MDCT to the ACELP. The embodiment of the invention also provides a method and a device for switching the encoding mode from the ACELP to the MDCT and a method and a device for switching the decoding mode. |
| priorityDate | 2013-01-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
| Predicate | Subject |
|---|---|
| isDiscussedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/compound/CID5288075 http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID426069177 |
Total number of triples: 11.