http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2002135170-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_60e21de07fa18fc54e2150daffc14654 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04M1-60 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04B3-23 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04R3-02 |
| filingDate | 2000-10-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8420386ff7a2465ad0211e9910d1d311 |
| publicationDate | 2002-05-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2002135170-A |
| titleOfInvention | Echo canceling apparatus, echo canceling method, and recording medium recording echo canceling program |
| abstract | (57) [Summary] [Object] To provide a reverberation canceling apparatus capable of increasing the convergence speed when the impulse response of a reverberation path changes by adaptively updating an exponent weighting algorithm. A reverberation canceling apparatus for canceling a reverberation signal by subtracting from a reverberation signal a pseudo reverberation signal for which an impulse response of a reverberation path is estimated by an estimation algorithm, A storage circuit for storing a step size matrix A weighted by an exponential decay characteristic of an impulse response of a sound field for setting a step size in an estimation algorithm for each coefficient of an impulse response of a pseudo echo path; A convergence determination circuit that determines whether the echo signal has been successfully eliminated based on the residual signal e (k) from which the audio signal has been subtracted. 11 and an attenuation coefficient operation circuit 12 for calculating an attenuation coefficient from the coefficient h ^ of the pseudo echo path obtained from the estimation algorithm of the estimation circuit 6 based on the determination that the echo signal has been successfully eliminated and reflecting the attenuation coefficient on the step size matrix A. . |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2005086377-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-4579518-B2 |
| priorityDate | 2000-10-23-04:00^^<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/CID160283 http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID415857418 |
Total number of triples: 16.