Display showing waveform of an audio signal and corresponding dynamic volume adjustments
US7551744B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 18, 2005 |
| Grant date | Jun 23, 2009 |
| Priority date | — |
| Expiry date | Feb 15, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G7/002
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A DSP (digital signal processor) processor having a gain reduction function processes an audio input signal to produce a current audio meter value, and a current gain reduction value. A logic processor then generates a timecode event record in response to receiving a new time value, and saves the timecode event record in a table. Each timecode event record contains the new time value, the current audio meter value, and the current gain reduction value. Concurrently, the logic processor retrieves timecode event records from the table for a predetermined range of time values. The logic processor plots the meter values and gain reduction values against the time values of the retrieved records to produce a waveform representation of the audio signal and the corresponding gain reduction. A display then displays the waveform representation of the audio signal and the corresponding gain reduction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.