Acoustic signal processing apparatus and acoustic signal processing method
US8103010B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 20, 2008 |
| Grant date | Jan 24, 2012 |
| Priority date | — |
| Expiry date | Nov 24, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R3/04
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus for performing processing of an input acoustic signal to be reproduced by a loudspeaker, which generates a harmonic of a low pitch sound component equal to or lower than a predetermined low cutoff frequency, and generates a harmonic synthesized acoustic signal synthesizing the input signal with the harmonic. The apparatus generates an output acoustic signal which cuts off, from the harmonic synthesized acoustic signal, a low pitch sound component equal to or lower than the low cutoff frequency and a high pitch sound component equal to or higher than the high cutoff frequency. The apparatus sets a low and high cutoff frequencies in accordance with an output characteristic of a loudspeaker.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.