Patent · US Active

Hybrid coded audio data streaming apparatus and method

US9059727B2 · kind B2 · utility

0Cited by

2References

23Claims

0Family size

Assignee

CAMBRIDGE SILICON RADIO LIMITED · GB

Inventors

Neil Smyth · Cologne, DE
David Trainor · Belfast, GB

Key dates

Filing date	May 3, 2012
Grant date	Jun 16, 2015
Priority date	—
Expiry date	Jul 20, 2033

Classification

Technology area (CPC H)Electricity
CPC primaryH03M7/3053
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

An audio coding system in which a plurality of quantization methods are selectable for application to components of a streamed audio signal to achieve a target frame size that is determined by comparing an achieved bit rate against a target bit rate. Based on the target frame size, the system calculates a bit allocation for signal components and compares the bit allocation to the dynamic range of the signal components. Depending on the outcome of the comparison, the system may select to quantize or not quantize a signal component. The system employs lossless coding techniques, but is capable of introducing lossy coding by quantization in order to meet the target bit rate.

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