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US7765104B2
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Slot position coding of residual signals of spatial audio coding application
Assignee: LG Electronics Inc
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Filing: 2006-08-30
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Granted: 2010-07-27
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Expires: 2026-08-30
Abstract
Abstract Spatial information associated with an audio signal is encoded into a bitstream, which can be transmitted to a decoder or recorded to a storage media. The bitstream can include different syntax related to time, frequency and spatial domains. In some embodiments, the bitstream includes one or more data structures (e.g., frames) that contain ordered sets of slots for which parameters can be applied. The data structures can be fixed or variable. The data structure can include position information that can be used by a decoder to identify the correct slot for which a given parameter set is applied. The slot position information can be encoded with either a fixed number of bits or a variable number of bits based on the data structure type.
Inventors
- 👤 Hee Suk Pang
- 👤 Dong Soo Kim
- 👤 Jae Hyun Lim
- 👤 Hyen O. Oh
- 👤 Yang Won Jung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:41
CPC Classifications
G; G10; G10L; G10L19/00; G10L19/04; G10L19/16; G10L19/167; G10L19/008; H; H04; H04S; H04S1/00; H04S1/007; H04R; H04R2499/00; H04R2499/10; H04R2499/11; H04S2420/00; H04S2420/03; H04S3/00; H04S3/002
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
220 words
A method of decoding an audio signal performed by an audio coding system, the audio signal including a downmix signal and spatial information, the spatial information including a residual signal, comprising: extracting time slot information in variable bit length and residual band information in fixed bit length, the time slot information indicating a time slot to which a parameter set is applied and the residual band information indicating a number of parameter bands to which the residual signal is applied; updating a parameter of the parameter set by using the residual signal based on the residual band information, the parameter set including inter-channel correlation information; and decoding the audio signal by using the parameter set including the updated parameter based on the time slot information, wherein the process of extracting time slot information further comprises: extracting a number of time slots and a number of parameter sets from the audio signal to identify time slot information; determining a bit length of the time slot information, the bit length being variable according to the number of time slots, the number of parameter sets and previous time slot information associated with a previous parameter set; and extracting the time slot information based on the bit length, wherein a number of the time slot information is equal to the number of parameter sets.
Claim 2
Independent Claim
220 words
A method of decoding an audio signal performed by an audio coding system, the audio signal including a downmix signal and spatial information, the spatial information including a residual signal, comprising: extracting time slot information in variable bit length and residual band information in fixed bit length, the time slot information indicating a time slot to which a parameter set is applied and the residual band information indicating a number of parameter bands to which the residual signal is applied; updating a parameter of the parameter set by using the residual signal based on the residual band information, the parameter set including inter-channel correlation information; and decoding the audio signal by using the parameter set including the updated parameter based on the time slot information, wherein the process of extracting time slot information further comprises: extracting a number of time slots and a number of parameter sets from the audio signal to identify time slot information; determining a bit length of the time slot information, the bit length being variable according to the number of time slots, the number of parameter sets and previous time slot information associated with a previous parameter set; and extracting the time slot information based on the bit length, wherein a number of the time slot information is equal to the number of parameter sets.
Claim 3
Dependent Claim
28 words
The method of claim 1 , wherein the time slot information is position information indicating a position of a time slot to which a parameter set is applied.
Claim 4
Dependent Claim
76 words
The method of claim 1 , wherein the time slot information includes an absolute value for indicating a time slot to which a first parameter set is applied or a difference value for indicating a time slot to which a following parameter set of the first parameter set is applied, and wherein the time slot to which the following parameter set is applied is determined by adding the difference value to the previous time slot information.
Claim 5
Independent Claim
182 words
An apparatus for decoding an audio signal, the audio signal including a downmix signal and spatial information, the spatial information including a residual signal, comprising: a processor comprising a signal receiving unit, a spatial information obtaining unit and an upmixing unit, wherein the signal receiving unit is operable for receiving a residual signal, a downmix signal and spatial information, and wherein the spatial information obtaining unit is operable for obtaining parameter set, time slot information corresponding to the parameter set and residual band information indicating the number of parameter bands corresponding to the residual signal, and updating a parameter of the parameter set by using the residual signal based on the residual band information, the parameter set including inter-channel correlation information, and wherein the upmixing unit is operable for decoding the downmix signal by using the parameter set including the updated parameter based on the time slot information, wherein a bit length of the time slot information is determined based on a number of time slots, a number of parameter sets, and previous time slot information associated with a previous parameter set.
Claim 6
Independent Claim
182 words
An apparatus for decoding an audio signal, the audio signal including a downmix signal and spatial information, the spatial information including a residual signal, comprising: a processor comprising a signal receiving unit, a spatial information obtaining unit and an upmixing unit, wherein the signal receiving unit is operable for receiving a residual signal, a downmix signal and spatial information, and wherein the spatial information obtaining unit is operable for obtaining parameter set, time slot information corresponding to the parameter set and residual band information indicating the number of parameter bands corresponding to the residual signal, and updating a parameter of the parameter set by using the residual signal based on the residual band information, the parameter set including inter-channel correlation information, and wherein the upmixing unit is operable for decoding the downmix signal by using the parameter set including the updated parameter based on the time slot information, wherein a bit length of the time slot information is determined based on a number of time slots, a number of parameter sets, and previous time slot information associated with a previous parameter set.
Claim 7
Dependent Claim
28 words
The apparatus of claim 4 , wherein the time slot information is position information indicating a position of a time slot to which a parameter set is applied.
Claim 8
Dependent Claim
76 words
The apparatus of claim 4 , wherein the time slot information includes an absolute value for indicating a time slot to which a first parameter set is applied or a difference value for indicating a time slot to which a following parameter set of the first parameter set is applied, and wherein the time slot to which the following parameter set is applied is determined by adding the difference value to the previous time slot information.
References Cited (Backward Citations)
JPS6096079A
Cited
US4661862A
Cited
US4621862A
Cited
JPS6294090A
Cited
US4725885A
Cited
US4907081A
Cited
EP0372601A1
Cited
US5243686A
Cited
EP0610975A2
Cited
US5579430A
Cited
US20040138895A1
Cited
EP0599825A2
Cited
US5606618A
Cited
GB2238445A
Cited
US6021386A
Cited
US5621856A
Cited
US5682461A
Cited
TW204406B
Cited
US5530750A
Cited
US5481643A
Cited
US6453120B1
Cited
US5563661A
Cited
US6125398A
Cited
US5515296A
Cited
US5640159A
Cited
RU2158970C2
Cited
US5687157A
Cited
US20030138157A1
Cited
TW289885B
Cited
US5945930A
Cited
US5528628A
Cited
TW360860B
Cited
TW317064B
Cited
KR970014387A
Cited
US5974380A
Cited
JPH09275544A
Cited
DE69712383T2
Cited
US6399760B1
Cited
EP0827312A2
Cited
US5912636A
Cited
TW384618B
Cited
RU2221329C2
Cited
US6134518A
Cited
RU2214048C2
Cited
US20020106019A1
Cited
TW405328B
Cited
US5890125A
Cited
US6560404B1
Cited
EP0943143A1
Cited
US5966688A
Cited
JP2005063655A
Cited
JPH11205153A
Cited
US20030009325A1
Cited
US6295319B1
Cited
EP0948141A2
Cited
US6339760B1
Cited
EP0957639A2
Cited
GB2340351A
Cited
US20010055302A1
Cited
US6442110B1
Cited
US6148283A
Cited
US20030016876A1
Cited
US6556685B1
Cited
JP2001188578A
Cited
EP1001549A2
Cited
US6309424B1
Cited
US6208276B1
Cited
US6384759B2
Cited
US6631352B1
Cited
US6611212B1
Cited
EP1047198A2
Cited
US6421467B1
Cited
KR20010001991A
Cited
US6456966B1
Cited
US7283965B1
Cited
JP2001053617A
Cited
US20020049586A1
Cited
US6636830B1
Cited
JP2002328699A
Cited
TW550541B
Cited
US20050058304A1
Cited
JP2002335230A
Cited
JP2003005797A
Cited
US20040186735A1
Cited
US20040247035A1
Cited
KR20030043620A
Cited
KR20030043622A
Cited
US7376555B2
Cited
TW569550B
Cited
US20040057523A1
Cited
JP2003233395A
Cited
US20050091051A1
Cited
US20030195742A1
Cited
US20050114126A1
Cited
US20030236583A1
Cited
EP1376538A1
Cited
RU2005103637A
Cited
WO2004008806A1
Cited
TW200405673A
Cited
TW200404222A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2013-07-26 | 2014-01-25 | 2014-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2017-07-26 | 2018-01-25 | 2018-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2021-07-26 | 2022-01-25 | 2022-07-27 | $7700.00 | Window Closed / Lapsed |