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1. 发明申请

WO2012091935A1 REPETITION DETECTION IN MEDIA DATA 审中-公开
标题翻译：媒体数据中的重复检测
公开(公告)号：WO2012091935A1
公开(公告)日：2012-07-05
申请号：PCT/US2011065080
申请日：2011-12-15
申请人： DOLBY LAB LICENSING CORP , DOLBY INT AB , RESCH BARBARA , RADHAKRISHNAN REGUNATHAN , BISWAS ARIJIT , ENGDEGARD JONAS
发明人： RESCH BARBARA , RADHAKRISHNAN REGUNATHAN , BISWAS ARIJIT , ENGDEGARD JONAS
IPC分类号： G10H1/00 , G06F17/30 , G06K9/00
CPC分类号： H04R29/00 , G06F17/00 , G06F17/3053 , G10H1/0008 , G10H2210/061 , G10H2240/151 , G10L25/48
摘要： Techniques for repetition detection in media data are provided. Media features of many different types may be extracted from the media data. Query sequences of fingerprints may be selected time intervals that begin at query times. Matched sequences of fingerprints may be determined. A set of offset values may be determined based on the matched sequences of fingerprints. This set of offset values may be further refined into a set of significant time points using a relatively targeted search and comparison method based on the media features of a second type extracted from the media data.
摘要翻译：提供了媒体数据中重复检测技术。可以从媒体数据中提取许多不同类型的媒体特征。指纹的查询序列可以是从查询时间开始的选择的时间间隔。可以确定匹配的指纹序列。可以基于匹配的指纹序列来确定一组偏移值。可以使用基于从媒体数据提取的第二类型的媒体特征的相对有针对性的搜索和比较方法，将这组偏移值进一步细化为一组有效时间点。

2. 发明专利

UA110291C2 未知
公开(公告)号：UA110291C2
公开(公告)日：2015-12-10
申请号：UAA201407672
申请日：2012-09-25
申请人： DOLBY LAB LICENSING CORP , DOLBY INT AB
发明人： BISWAS ARIJIT , MELKOTE VINAY , SCHUG MICHAEL , DAVIDSON GRANT A , VINTON MARK S
IPC分类号： G10L19/032 , G10L19/02

3. 发明专利

UA110768C2 СИСТЕМА КОМПАНДУВАННЯ ТА СПОСІБ ЗНИЖЕННЯ ШУМУ КВАНТУВАННЯ З ВИКОРИСТАННЯМ УДОСКОНАЛЕНОГО СПЕКТРАЛЬНОГО РОЗШИРЕННЯ 未知
公开(公告)号：UA110768C2
公开(公告)日：2016-02-10
申请号：UAA201508058
申请日：2014-04-01
申请人： DOLBY LAB LICENSING CORP , DOLBY INT AB
发明人： HEDELIN PER , BISWAS ARIJIT , SCHUG MICHAEL , MELKOTE VINAY
IPC分类号： G10L21/034 , G03G7/00 , H03G3/24 , H04B1/64
摘要： Варіантиздійсненнявинаходуналежатьдоспособутасистемикомпандуваннядлязниженняшумукодуванняв аудіокодеку. Процеспакуваннязменшуєвихіднийдинамічнийдіапазонпервинногозвуковогосигналузадопомогоюпроцесупакування, якийділитьпервиннийзвуковийсигналнасукупністьсегментівз використаннямпевноїформивікна, обчислюєкоефіцієнтпідсиленняв широкійсмузічастоту частотнійобластіз використаннямзаснованогоненаенергіїсередньогозначеннядискретнихзначеньчастотноїобластіпервинногозвуковогосигналутазастосовуєокремікоефіцієнтипідсиленнядляпідсиленнясегментівз відноснонизькоюінтенсивністютапослабленнясегментівз відносновисокоюінтенсивністю. Потімупакованийзвуковийсигналрозпаковуєтьсяназад, посуті, довихідногодинамічногодіапазону, якийзастосовуєзворотнізначеннякоефіцієнтівпідсиленнядляпідсиленнясегментівз відносновисокоюінтенсивністютапослабленнясегментівз відноснонизькоюінтенсивністю. Банкфільтрів QMF застосовуєтьсядляаналізупервинногозвуковогосигналудляодержанняпредставленняв частотнійобласті.

4. 发明专利

CL2015002278A1 Sistema y metodo de compansion para reducir el ruido de cuantificacion usando extension espectral avanzada 未知
公开(公告)号：CL2015002278A1
公开(公告)日：2015-12-11
申请号：CL2015002278
申请日：2015-08-14
申请人： DOLBY INT AB , DOLBY LAB LICENSING CORP
发明人： SCHUG MICHAEL , MELKOTE VINAY , HEDELIN PER , BISWAS ARIJIT
IPC分类号： G03G7/00 , G10L21/034 , H03G3/24 , H04B1/64
摘要： LAS MODALIDADES SO REFIEREN A UN MÉTODO Y SISTEMA DO COMPANSION PARA REDUCIR EL RUIDO DE CODIFICACION EN UN CÓDEC DE AUDIO. UN PROCESO DE COMPRESIÓN REDUCE UN INTERVALO DINAMICO ORIGINAL DE UNA SEÑAL DE AUDIO INICIAL A TRAVÉS DE UN PROCESO DE COMPRESIÓN QUE DIVIDE LA SEÑAL DE AUDIO INICIAL EN MULTIPLES SEGMENTOS USANDO UNA FORMA DE VENTANA DEFINIDA, CALCULA UNA GANANCIA DE BANDA ANCHA EN EL DOMINIO DE FRECUENCIA USANDO UN PROMEDIO NO BASADO EN ENERGÍA DE MUESTRAS DO DOMINIO DE FRECUENCIA DE LA SEÑAL DE AUDIO INICIAL, Y APLICA VALORES DE GANANCIA INDIVIDUALES PARA AMPLIAR SEGMENTOS DE INTENSIDAD RELATIVAMENTE BAJA Y ATENUAR SEGMENTOS DE INTENSIDAD RELATIVAMENTE ALTA. LA SEÑAL DE AUDIO COMPRIMIDA SE EXTIENDE LUEGO NUEVAMENTE HASTA SUSTANCIALMENTE EL INTERVALO DINÁMICO ORIGINAL QUE APLICA VALORES DE GANANCIA INVERSOS PARA AMPLIAR SEGMENTOS DE INTENSIDAD RELATIVAMENTE ALTA Y ATENUAR SEGMENTOS DE INTENSIDAD RELATIVAMENTE BAJA. UNA BATERIA DE FILTROS QMF SE USA PARA ANALIZAR LA SEÑAL DE AUDIO INICIAL PARA OBTENER UNA REPRESENTACION DE DOMINIO DE FRECUENCIA.

5. 发明专利

SG11201506134XA COMPANDING APPARATUS AND METHOD TO REDUCE QUANTIZATION NOISE USING ADVANCED SPECTRAL EXTENSION 未知
公开(公告)号：SG11201506134XA
公开(公告)日：2015-09-29
申请号：SG11201506134X
申请日：2014-04-01
申请人： DOLBY LAB LICENSING CORP , DOLBY INT AB
发明人： HEDELIN PER , BISWAS ARIJIT , SCHUG MICHAEL , MELKOTE VINAY
IPC分类号： G03G7/00 , G10L21/034 , H03G3/24 , H04B1/64
摘要： Embodiments are directed to a companding method and system for reducing coding noise in an audio codec. A compression process reduces an original dynamic range of an initial audio signal through a compression process that divides the initial audio signal into a plurality of segments using a defined window shape, calculates a wideband gain in the frequency domain using a non-energy based average of frequency domain samples of the initial audio signal, and applies individual gain values to amplify segments of relatively low intensity and attenuate segments of relatively high intensity. The compressed audio signal is then expanded back to substantially the original dynamic range that applies inverse gain values to amplify segments of relatively high intensity and attenuate segments of relatively low intensity. A QMF filterbank is used to analyze the initial audio signal to obtain a frequency domain representation.

7. 发明专利

AP201508800A0 COMPANDING APPARATUS AND METHOD TO REDUCE QUANTIZATION NOISE USING ADVANCED SPECTRAL EXTENSION 未知
公开(公告)号：AP201508800A0
公开(公告)日：2015-10-31
申请号：AP201508800
申请日：2014-04-01
申请人： DOLBY LAB LICENSING CORP , DOLBY INT AB
发明人： MELKOTE VINAY , BISWAS ARIJIT , HEDELIN PER
IPC分类号： H04B1/64 , G03G7/00 , G10L21/034 , H03G3/24
CPC分类号： G10L21/0232 , G10L19/008 , G10L19/0208 , G10L19/032 , G10L21/034 , G10L25/18 , G10L25/45 , H03G7/007 , H04B1/66
摘要： Embodiments are directed to a companding method and system for reducing coding noise in an audio codec. A compression process reduces an original dynamic range of an initial audio signal through a compression process that divides the initial audio signal into a plurality of segments using a defined window shape, calculates a wideband gain in the frequency domain using a non-energy based average of frequency domain samples of the initial audio signal, and applies individual gain values to amplify segments of relatively low intensity and attenuate segments of relatively high intensity. The compressed audio signal is then expanded back to the substantially the original dynamic range that applies inverse gain values to amplify segments of relatively high intensity and attenuating segments of relatively low intensity. A QMF filterbank is used to analyze the initial audio signal to obtain a frequency domain representation.

8. 发明专利

AP2015008800A0 COMPANDING APPARATUS AND METHOD TO REDUCE QUANTIZATION NOISE USING ADVANCED SPECTRAL EXTENSION 未知
公开(公告)号：AP2015008800A0
公开(公告)日：2015-10-31
申请号：AP2015008800
申请日：2014-04-01
申请人： DOLBY LAB LICENSING CORP , DOLBY INT AB
发明人： MELKOTE VINAY , BISWAS ARIJIT , HEDELIN PER
IPC分类号： H04B1/64 , G03G7/00 , G10L21/034 , H03G3/24
摘要： Embodiments are directed to a companding method and system for reducing coding noise in an audio codec. A compression process reduces an original dynamic range of an initial audio signal through a compression process that divides the initial audio signal into a plurality of segments using a defined window shape, calculates a wideband gain in the frequency domain using a non-energy based average of frequency domain samples of the initial audio signal, and applies individual gain values to amplify segments of relatively low intensity and attenuate segments of relatively high intensity. The compressed audio signal is then expanded back to substantially the original dynamic range that applies inverse gain values to amplify segments of relatively high intensity and attenuate segments of relatively low intensity. A QMF filterbank is used to analyze the initial audio signal to obtain a frequency domain representation.

9. 发明专利

SG11201402983UA METHOD AND SYSTEM FOR ENCODING AUDIO DATA WITH ADAPTIVE LOW FREQUENCY COMPENSATION 未知
公开(公告)号：SG11201402983UA
公开(公告)日：2014-09-26
申请号：SG11201402983U
申请日：2012-09-25
申请人： DOLBY LAB LICENSING CORP , DOLBY INT AB
发明人： BISWAS ARIJIT , MELKOTE VINAY , SCHUG MICHAEL , DAVIDSON GRANT A , VINTON MARK S
IPC分类号： G10L19/032 , G10L19/02
摘要： A method for determining mantissa bit allocation of audio data values of frequency domain audio data to be encoded. The allocation method includes a step of determining masking values for the audio data values, including by performing adaptive low frequency compensation on the audio data of each frequency band of a set of low frequency bands of the audio data. The adaptive low frequency compensation includes steps of: performing tonality detection on the audio data to generate compensation control data indicative of whether each frequency band in the set of low frequency bands has prominent tonal content; and performing low frequency compensation on the audio data in each frequency band in the set of low frequency bands having prominent tonal content as indicated by the compensation control data, but not performing low frequency compensation on the audio data in any other frequency band in the set of low frequency bands.

10. 发明专利

AU2012364749A1 Method and system for encoding audio data with adaptive low frequency compensation 未知
公开(公告)号：AU2012364749A1
公开(公告)日：2014-07-03
申请号：AU2012364749
申请日：2012-09-25
申请人： DOLBY INT AB , DOLBY LAB LICENSING CORP
发明人： BISWAS ARIJIT , MELKOTE VINAY , SCHUG MICHAEL , DAVIDSON GRANT A , VINTON MARK S
IPC分类号： G10L19/032 , G10L19/02
摘要： A method for determining mantissa bit allocation of audio data values of frequency domain audio data to be encoded. The allocation method includes a step of determining masking values for the audio data values, including by performing adaptive low frequency compensation on the audio data of each frequency band of a set of low frequency bands of the audio data. The adaptive low frequency compensation includes steps of: performing tonality detection on the audio data to generate compensation control data indicative of whether each frequency band in the set of low frequency bands has prominent tonal content; and performing low frequency compensation on the audio data in each frequency band in the set of low frequency bands having prominent tonal content as indicated by the compensation control data, but not performing low frequency compensation on the audio data in any other frequency band in the set of low frequency bands.

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