Microphone unit with internal A/D converter
US8649528B2 · kind B2 · utility
2Cited by
19References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2010 |
| Grant date | Feb 11, 2014 |
| Priority date | — |
| Expiry date | Apr 28, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R19/04
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a microphone assembly comprising a microphone assembly casing having a sound inlet port and a transducer for receiving acoustic waves through the sound inlet port. The transducer converts the received acoustic waves to analog audio signals. The assembly according to the present invention further comprises an electronic circuit positioned within the microphone assembly casing, said electronic circuit comprising a pre-amplifier and an analog-to-digital converter preferably in form of a sigma-delta modulator so as to convert amplified analog audio signals to digital audio signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.