Title:
AUDIO SIGNAL PROCESSING CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2021/131747
Kind Code:
A1
Abstract:
An oversampling filter 110 oversamples a digital audio signal S1. A ΔΣ modulator 120 subjects an output S2 from the oversampling filter 110 to ΔΣ modulation. A D/A converter 130 converts an output S3 from the ΔΣ modulator 120 to an analog audio signal S4. The oversampling filter 110 includes a processor 112 capable of executing firmware and is configured to be programmable with a computation algorithm.
Inventors:
YAMAGAMI SHINJI (JP)
Application Number:
PCT/JP2020/046077
Publication Date:
July 01, 2021
Filing Date:
December 10, 2020
Export Citation:
Assignee:
ROHM CO LTD (JP)
International Classes:
H03M3/02; H03H17/00; H03H17/06
Foreign References:
| US9748929B1 | 2017-08-29 | |||
| JP2005005766A | 2005-01-06 | |||
| JPH08186498A | 1996-07-16 |
Attorney, Agent or Firm:
MORISHITA Sakaki (JP)
Download PDF: