Amplifier assembly and method of amplification particularly for portable device
US11881819B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 15, 2020 |
| Grant date | Jan 23, 2024 |
| Priority date | — |
| Expiry date | Jan 12, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2430/01
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A sound system includes a sound source having an analogue audio signal output and a sound volume control; signal amplifier apparatus (10) comprising an analogue signal input (12) configured to be coupled to the analogue audio signal output of the sound source, an analogue signal output (18) and an amplifier module (62) coupled between the signal input and the signal output. The amplifier module (62) has a fixed amplification gain within a range of 10 to 12 decibels. Control of the audio signal is effected solely by the sound volume control of the sound source. The amplifier module (64) also provides a fixed gain bass boost of 6 decibels. The system provides linear amplification and allows a user to reduce the volume of the sound source, which significantly reduces signal distortion. Volume control is at the sound source and not at the amplifier module, which optimises amplification quality and reduces the power requirement of the amplifier apparatus (10).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.