http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2013177916-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_fb02b695d80ecec0dec1c8ec2c34151a |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04R1-403 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04S3-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04R1-20 |
| filingDate | 2012-12-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f47bad0a9d4343e537b78c3fa846c76c |
| publicationDate | 2013-12-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | WO-2013177916-A1 |
| titleOfInvention | Acoustic field control method and device for loudspeaker array |
| abstract | A quadratic residue sequence combination-based acoustic field control method and device for a loudspeaker array. The method comprises: (1) cutting a designated quadratic residue sequence in accordance with the number of array elements into blocks to generate a plurality of quadratic residue subsequences; (2) using these subsequences to design an optimum array phase-delay vector; (3) in accordance with the optimal phase-delay vector, controlling a transmission signal of a multi-array element passage to perform phase-delay adjustment; and (4) sending the multi-passage signal on which phase-delay adjustment is performed to a multi-passage power amplifier so as to drive a loudspeaker array to generate a uniform acoustic field. The device comprises a sound source, an optimal phase-delay estimator, an optimal phase-delay controller, a multi-passage power amplifier and a loudspeaker array. The method and device can be applied to effectively extend the coverage range of an array space radiation acoustic field, and improve the uniformity of the array space radiation acoustic field. The hardware implementation of the acoustic field control method is simple, thereby meeting the requirements of an array sound-reinforcement system for the spatial distribution quality of an acoustic field. |
| priorityDate | 2012-05-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 80.