http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2014059897-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_fb02b695d80ecec0dec1c8ec2c34151a |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04R3-04 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04R3-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H03G5-165 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H03G5-005 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G10L21-0232 |
| filingDate | 2013-10-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f47bad0a9d4343e537b78c3fa846c76c |
| publicationDate | 2014-04-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | WO-2014059897-A1 |
| titleOfInvention | Method and device for balancing frequency response of sound playback system through offline iteration |
| abstract | Disclosed are a method and a device for balancing frequency response of a sound playback system through offline iteration. The method comprises: (1) acquiring a pulse response sequence of a system to be balanced by using a measuring instrument; (2) acquiring feedback signals by selecting noise signals and utilizing the convolution of the noise signals and the pulse response sequence; (3) sequentially estimating parameters of all levels of balancers by using a least squares criterion of gradual iteration according to the noise signals and the feedback signals; (4) cascading the all levels of balancers to form a synthesized balancer; and (5) updating coefficients of a finite impulse response (FIR) filter by using parameters of the synthesized balancer to finish system frequency response balancing. The device comprises a sound source, a digital signal processor, a power amplifier and a loudspeaker which are sequentially connected with one another. According to the device, the response balancing capacity of the balancers can be obviously improved by increasing the number of the cascaded balancers; the balancing task of complex calculation can be processed conveniently in an offline estimation mode; and moreover, the hardware manufacturing cost of the balancers is saved. |
| priorityDate | 2012-10-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 30.