Classifications

• • G—PHYSICS
  • G10—MUSICAL INSTRUMENTS; ACOUSTICS
  • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
  • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
  • G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
• • G—PHYSICS
  • G10—MUSICAL INSTRUMENTS; ACOUSTICS
  • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
  • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
  • G11B20/10—Digital recording or reproducing
  • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
  • G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
  • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
  • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
  • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
  • G11B27/30—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording
  • G11B27/3027—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording used signal is digitally coded
• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
  • G11B20/00007—Time or data compression or expansion
  • G11B2020/00014—Time or data compression or expansion the compressed signal being an audio signal
• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
  • G11B20/10—Digital recording or reproducing
  • G11B20/10527—Audio or video recording; Data buffering arrangements
  • G11B2020/10537—Audio or video recording
  • G11B2020/10546—Audio or video recording specifically adapted for audio data
• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
  • G11B20/10—Digital recording or reproducing
  • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
  • G11B2020/1264—Formatting, e.g. arrangement of data block or words on the record carriers wherein the formatting concerns a specific kind of data
  • G11B2020/1265—Control data, system data or management information, i.e. data used to access or process user data

Definitions

• the present invention relates to the field of multimedia communication and transmission, and in particular, to a method and apparatus for storing voice data.
• a scheme of a Versatile Audio Codec (VAC) is currently proposed.
• the scheme combines the control method and the signal classification method, and can flexibly implement encoding, transmission, and decoding of the audio and video frames according to different technical schemes according to user settings, application scenarios, client feedback, and audio data.
• multiple codecs can be included to support scalable audio codec from narrowband to fullband.
• voice and audio data needs to be stored on physical media for subsequent access and viewing.
• storing the audio and video data on the physical medium also allows the user to conveniently access the file information and perform various access operations efficiently and quickly. Therefore, there is an urgent need for a storage method to reasonably organize the storage structure and information of multi-purpose speech audio data.
• the technical problem to be solved by the present invention is to provide a method and apparatus for storing speech and audio data, which can reasonably organize the storage structure and information of multi-purpose speech audio data.
• the present invention provides a method for storing speech audio data, including: recording the multi-purpose speech audio data storage file in a multi-purpose speech audio data storage file Basic information; sequentially storing multipurpose speech codec (VAC) frame data into the multipurpose speech audio data storage file; recording the multipurpose speech audio data storage in the multipurpose speech audio data storage file Load information of the file; and index information of the stored VAC frame in the multi-purpose audio data storage file.
• VAC multipurpose speech codec
• the basic information includes one or more of the following: a file type, a type version, a feature information, a manufacturer identifier, and a creation time; the feature information includes one or more of the following information: configuration information; hierarchical information; Option information; and attribute information.
• the load information includes one or more of the following: a total file length, a stored VAC total frame number, an encoding module identifier, an average bit rate of the VAC encoded code stream, and characteristic information that has appeared in the stored VAC frame.
• the step of sequentially storing the VAC frame data recording one or more of the stored total number of VAC frames, the encoding module identifier, the total size of the VAC frame data, and the characteristic information appearing in the stored VAC frame;
• the step of information includes: calculating a total duration of the file and an average bit rate of the VAC encoded code stream, the total duration of the file, the total number of VAC frames stored, the encoding module identification, the average bit rate of the VAC encoded code stream, and the stored VAC
• One or more of the feature information appearing in the frame is recorded in the multi-purpose audio data storage file.
• the method further includes: forming the multi-purpose block by a fixed number of VAC frames; the load information further includes: the number of VAC frames included in one block
• the index information includes: a block index of all blocks in the multi-purpose audio data storage file.
• the block index includes: block offset information of a current block.
• the block index further includes: feature information of all VAC frames in the current block.
• the feature information of each VAC frame and the offset information of each block are recorded; in the step of recording the load information, the number of VAC frames included in one block is recorded to the In the multi-purpose audio data storage file; in the step of recording the index information, sequentially recording the block offset information of the current block and the feature information of all the VAC frames included in the current block in the block index of each block, and The block index of all stored blocks is recorded into the multi-purpose speech audio data storage file.
• the present invention further provides a storage device for voice data, comprising: a basic information recording module, a VAC frame data storage module, a load information recording module, and an index information recording module;
• the basic information of the multi-purpose audio data storage file is recorded in the multi-purpose audio data storage file;
• the VAC frame data storage module is configured to: sequentially store the VAC frame data into the multi-purpose audio data storage
• the load information recording module is configured to: record load information of the multi-purpose speech audio data storage file in the multi-purpose audio data storage file;
• the index information recording module is configured to: The usage language audio data storage file records the index information of the stored VAC frame.
• the basic information includes one or more of the following: a file type, a type version, a feature information, a manufacturer identifier, and a creation time; the feature information includes one or more of the following information: configuration information; hierarchical information; Option information; and attribute information.
• the load information includes one or more of the following: a total file length, a stored VAC total frame number, an encoding module identifier, an average bit rate of the VAC encoded code stream, and characteristic information that has appeared in the stored VAC frame.
• the VAC frame data storage module is further configured to: record one or more of a stored total number of VAC frames, an encoding module identifier, a total size of VAC frame data, and characteristic information that appears in the stored VAC frame;
• the load information recording module is configured to record the load information as follows: calculate the total duration of the file and the average bit rate of the VAC encoded code stream, the total duration of the file, the total number of stored VAC frames, the encoding module identifier, and the VAC encoding code.
• One or more of the average bit rate of the stream and the feature information appearing in the stored VAC frame are recorded into the multi-purpose audio data storage file.
• the device further includes a block dividing module, the block dividing module is configured to: logically divide all VAC frames stored in the multi-purpose audio data storage file into one or more blocks; The number of VAC frames is composed; the index information recording module is further configured to: sequentially record block offset information of the current block and feature information of all VAC frames included in the current block in a block index of each block, and store the The block index of all blocks is recorded as index information in the multi-purpose audio data storage file.
• the block index includes: block offset information of the current block and/or feature information of all VAC frames in the current block.
• the VAC frame data storage module is further configured to: record feature information of each VAC frame and offset information of each block; the load information recording module is further configured to: record the number of VAC frames included in one block And the index information recording module is further configured to: sequentially record block offset information of the current block and features of all VAC frames included in the current block in a block index of each block Information, and records the stored block index of all blocks into the multi-purpose audio data storage file.
• the invention realizes the convenient playback function of the multi-purpose speech and audio data by recording the basic information of the multi-purpose speech audio data storage file, the VAC frame data, the load information of the file, the index information of the VAC frame, and can efficiently obtain the file information and realize the positioning. Play and grade play.
• FIG. 2 is a schematic diagram of basic information of a storage file according to the present invention
• FIG. 3 is a schematic diagram of VAC frame data of a storage file according to the present invention
• FIG. 5 is a schematic diagram of VAC frame index information of a storage file according to the present invention.
• the preferred embodiment of the present invention has the existing Adaptive Multi-Rate (AMR), Advanced Audio Coding (AAC), MPEG Audio Layer 3 (MP3), etc.
• AMR Adaptive Multi-Rate
• AAC Advanced Audio Coding
• MP3 MPEG Audio Layer 3
• the storage method of audio coded data is either not indexed and cannot achieve positioning playback; or the index design is not reasonable enough to describe the characteristics of the frame data well.
• the existing storage method must traverse to read all the data, and then the target data can be selected after parsing, and efficient code stream selection and hierarchical playback cannot be realized.
• the invention can solve the problem that the hierarchical play cannot be realized when storing the multi-purpose speech frame in the prior art.
• the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. As shown in FIG.
• the method for storing voice data in the embodiment of the present invention includes: Step 101: Record basic information of the multi-purpose voice data storage file in a multi-purpose audio data storage file.
• the basic information provides general description information of the current file, and may include: a file type, a type version, a feature information, a manufacturer identifier, and one or more of file creation times.
• multi-purpose audio data refers to VAC frame data.
• the load information provides a supplementary description of the current file, and may include one or more of the following information: total file duration, total VAC frame number stored in the file, average bit rate of the VAC encoded code stream, and the like.
• the load information may further include: an encoding module identifier, and feature information (ie, a profile list) that has appeared in the VAC encoded frame stored in the file.
• Step 104 Record index information of the stored VAC frame in the multi-purpose audio data storage file. In order to support the positioning and dragging when playing back the media file, that is, to support the function of conveniently and quickly accessing the VAC frame of the specified point in time, the index of the VAC frame needs to be recorded.
• all VAC frames sequentially stored in the file may be logically divided into one or more blocks, and the blocks are indexed, that is, each frame entry records a certain The position offset information of the block.
• the feature information of each VAC frame may be recorded in the index information, so that during playback, it is not necessary to access the VAC frame data one by one, but only according to the index Guide to get the desired target data. Further, the feature information (rofile) of the VAC frame actually included in each block is recorded inside the index to optimize the efficiency of the internal VAC frame operation and realize convenient hierarchical playback.
• the block is composed of a fixed number of VAC frames, and the value is defined in the file load information, that is, in step 103, the number of VAC frames included in one block is recorded into the multi-purpose audio data storage file. .
• This parameter can be configured by itself when the file is generated.
• the feature information of all VAC frames contained in the block is sequentially recorded inside the index of one block.
• a multi-purpose audio data storage file may include: a basic letter of the file Information, VAC frame data, file load information, and index information for VAC frames.
• the basic information may include a file type field, a type version field, a profile information field, a vendor identification field, a creation time field, and some other fields.
• the file type field identifies that the current file is stored by the multi-purpose audio data.
• the Type Version field identifies the version of the current file type.
• the feature information field identifies the feature information of all the multi-purpose audio data in the file, and may include one or more of the following information: configuration information, rating information, option information, and attribute information.
• the Manufacturer ID field is used to identify the creator of the current file.
• the creation time field identifies when the current file was created.
• the VAC frame data portion is sequentially arranged by one VAC frame.
• the load information may include a total file duration field, a total number of frames of the file, a number of VAC frames included in one block (ie, the number of frames per frame M), an average bit rate of the VAC encoded code stream, and an encoding.
• the module identification field the feature information (ie, the feature list) that has appeared in the VAC coded frame stored in the file.
• the Total File Length field identifies the total duration of the entire file playback.
• the Total File Number field identifies the total number of VAC frames stored in the file.
• the number field of VAC frames contained in a block identifies the number of VAC frames in the block pointed to by an entry in the index.
• the average bit rate of the VAC encoded code stream identifies the average bit rate of the file.
• the Encoding Module Identification field identifies the encoding module identification that has occurred in the VAC encoded frame stored in the file.
• the feature list field appearing in the VAC coded frame stored in the file identifies the feature information of all VAC frames in the file. With this information, a visitor can select whether to parse or partially parse the file according to its own terminal characteristics.
• the file index information includes block index information sequentially arranged.
• a block index information includes a block offset field and a feature information field of all VAC frames inside the block.
• the block index field is used for point-in-time and random access in the file.
• the Block Offset field identifies the position offset of the located block in the file.
• the feature information field of a block internal VAC frame is used to select a particular type of frame data within a block.
• the total file length and the average bit rate of the VAC coded stream are calculated and recorded in the load information, and Write to the file.
• index information is generated based on the feature information of each VAC frame and the offset information of the block, and is written to the file.
• the index information is generated according to the feature information of each VAC frame and the offset information of the block.
• the file may be written in the block index of each block, and the block offset information of the current block and all the current blocks are sequentially recorded.
• the feature information of the VAC frame and records the stored block index of all blocks into the file.
• the storage device for the audio and audio data includes: a basic information recording module, a VAC frame data storage module, a load information recording module, and an index information recording module; and the basic information recording module is configured to: Recording, in the storage file, basic information of the multi-purpose speech audio data storage file; the VAC frame data storage module is configured to: sequentially store VAC frame data into the multi-purpose speech audio data storage file; The module is configured to: record load information of the multi-purpose audio data storage file in the multi-purpose audio data storage file; the index information recording module is configured to: record in the multi-purpose audio data storage file The index information of its stored VAC frame.
• the apparatus further includes a block dividing module, the block dividing module configured to: logically divide all VAC frames stored in the multi-purpose audio data storage file into one or more blocks; The number of VAC frames is composed; the index information recording module is further configured to: sequentially record block offset information of the current block and feature information of all VAC frames included in the current block in a block index of each block, and store the information The block index of all the blocks is recorded as index information in the multi-purpose audio data storage file.
• the load information recording module is further configured to: record the total number of VAC frames stored, the total size of the VAC frame data, the characteristic information that has appeared, and the identifier of the generated coding module, and calculate the total length of the file and the VAC coded stream.
• Average bit rate, the total duration of the file, the total number of VAC frames stored, the number of VAC frames included in a block, the average bit rate of the VAC encoded bitstream, and The feature information appearing in the stored VAC frame is recorded in the multi-purpose speech audio data storage file.
• ⁇ has a set of multi-purpose speech and audio code streams, and the feature information of every 10 frames of the VAC frame (for example, the feature information is hierarchical information) is sequentially increased by 1, that is, 1 _ 10
• the feature information value of the frame is 1, the feature information value of 11 - 20 frames is 2, and the feature information value of ....90 - 100 frames is 10.
• the file basic information is first written.
• the file type is "VACFF”
• the file type version is 1.0
• the feature information is OxFF (that is, the stored VAC frame feature information values are not identical)
• the manufacturer ID is "ZTEMM” , created at "20100322”.
• the feature information field may be used to indicate whether the feature information of all the multi-purpose audio and audio data in the file is the same. For example, when the stored VAC frame feature information is not completely the same as described above, the OxFF (or other identification feature information may be written). Different values), if the stored VAC frame feature information are all the same, a value indicating the same feature information can be written to the field. In addition, when the basic information of the file is written, it is not known whether the stored VAC frame feature information is the same, or a specified value, such as OxFF (or other specified value), can be directly written. At this time, OxFF means that the storage cannot be determined. Whether the VAC frame feature information is identical. The VAC frame is then sequentially stored in a file and various information is recorded.
• the offset of the first block in the file is 30, and the index of the block is 30, 1, 1, 1, 1, 1, 1, 1, 1, 1 ( A 10-frame feature information value), 2, 2, 2, 2, 2, 2, 2, 2, 2, 2 (second 10 frame feature information value), ...5, 5, 5, 5 , 5, 5, 5, 5, 5 (the characteristic information value of the fifth 10 frames).
• the block index information can be used to conveniently locate the time point in the file:
• the data to be read is first located in the first block, and then the 25th VAC frame is located. .
• the offset position of the 25th VAC frame is calculated by the sum of the offset position of the current block and the length of the first 24 VAC frames of the block.
• the block index information can also be used to conveniently realize hierarchical playback of data: If a customer can only play data of level 2 for some reason, then through this index information, it is found that only the first frame of 10 frames meets the requirements. , you only need to read the corresponding data according to the index. At this point, it is no longer necessary to traverse the search frame data in the file, which greatly improves the reading efficiency.
• the present invention provides a method and apparatus for storing multi-purpose speech audio data.
• basic information of a file, VAC frame data, load information of a file, and index information of a VAC frame can be generated.
• the file generated by this method is simple in structure, easy to read and access, and can satisfy various applications of multi-purpose speech and audio.

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• Engineering & Computer Science (AREA)
• Signal Processing (AREA)
• Physics & Mathematics (AREA)
• Health & Medical Sciences (AREA)
• Audiology, Speech & Language Pathology (AREA)
• Human Computer Interaction (AREA)
• Computational Linguistics (AREA)
• Acoustics & Sound (AREA)
• Multimedia (AREA)
• Mathematical Physics (AREA)
• Signal Processing For Digital Recording And Reproducing (AREA)
• Management Or Editing Of Information On Record Carriers (AREA)
• Information Retrieval, Db Structures And Fs Structures Therefor (AREA)

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• 2010
  • 2010-04-14 CN CN2010101657332A patent/CN102222077A/zh active Pending
  • 2010-10-26 KR KR1020127029461A patent/KR101447606B1/ko not_active Expired - Fee Related
  • 2010-10-26 EP EP10849735.5A patent/EP2560105A4/en not_active Withdrawn
  • 2010-10-26 JP JP2013504096A patent/JP2013528823A/ja active Pending
  • 2010-10-26 WO PCT/CN2010/078117 patent/WO2011127726A1/zh not_active Ceased
  • 2010-10-26 US US13/640,578 patent/US8868429B2/en not_active Expired - Fee Related

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