Measurement device, measurement method, recording medium, and phonograph record
US12211518B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 6, 2020 |
| Grant date | Jan 28, 2025 |
| Priority date | — |
| Expiry date | Apr 24, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B27/36
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A playback device (measurement device) in a record playback system including a record player and the playback device measures a frequency characteristic of each of a plurality of input signals which are input from the record player to the playback device when a plurality of test signals for measuring a characteristic of the record playback system are played back by the record player, the plurality of test signals being recorded on a phonograph record, the plurality of input signals corresponding to the plurality of test signals recorded; calculates a measurement error between the frequency characteristic of each of the plurality of input signals measured and a predetermined frequency characteristic; selects a frequency characteristic of which the measurement error is smallest from among the frequency characteristics of the plurality of input signals, as a measurement result of the record playback system; and outputs the measurement result selected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.