Patent · US Active

FM stereo radio receiver by using parametric stereo

US9299355B2 · kind B2 · utility

0Cited by

3References

8Claims

0Family size

Assignee

Dolby International AB · IE

Inventors

Jan-Erik Mueller · Ismaning, DE
Robin Thesing · Nuremberg, DE
Michael Beer · Erlangen, DE

Key dates

Filing date	Jul 20, 2012
Grant date	Mar 29, 2016
Priority date	—
Expiry date	Dec 2, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH04H40/45
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

The invention relates to an apparatus (1) for improving a stereo audio signal of an FM stereo radio receiver (10). It is suggested to employ components of a standard HE-ACC v2 decoder (40) in such apparatus (1) to efficiently recover the stereo audio signal (LR′) while also exhibiting good signal quality. To that end, parametric stereo parameters (15) shall be quantized and submitted to such decoder (40) together with a mono-downmix signal (25). The decoder (25) can then easily recover the parametric stereo parameters (15) by de-quantizing them via a simple lookup table, and finally creating the stereo output signal (L′R′) from the de-quantized parametric stereo parameters and the mono-downmix signal (25). The apparatus (1) further includes a parameter estimation stage (5) which may again be embodied on the basis of components of a standard HE-ACC v2 encoder (65). After estimating the parametric stereo parameters (15) and generating the mono-downmix signal (25), the encoder (65) will not use further encoding other than the already performed PS-coding. An apparatus (1) according to the invention therefore advantageously includes decoder (40) and/or encoder (65) components of a stand…

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.