Efficient and scalable parametric stereo coding for low bitrate applications
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United States of America Patent
Stats
-
Jan 9, 2018
Issued Date -
N/A
app pub date -
Mar 14, 2017
filing date -
Jul 10, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The present invention provides improvements to prior art audio codecs that generate a stereo-illusion through post-processing of a received mono signal. These improvements are accomplished by extraction of stereo-image describing parameters at the encoder side, which are transmitted and subsequently used for control of a stereo generator at the decoder side. Furthermore, the invention bridges the gap between simple pseudo-stereo methods, and current methods of true stereo-coding, by using a new form of parametric stereo coding. A stereo-balance parameter is introduced, which enables more advanced stereo modes, and in addition forms the basis of a new method of stereo-coding of spectral envelopes, of particular use in systems where guided HFR (High Frequency Reconstruction) is employed. As a special case, the application of this stereo-coding scheme in scalable HFR-based codecs is described.
First Claim
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International Classification(s)
- 2017 Application Filing Year
- G10L Class
- 3736 Applications Filed
- 2832 Patents Issued To-Date
- 75.81 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- G10L Class
- 23.96 % this patent is cited more than
- 7 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jul 9, 2025 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jul 9, 2029 |
