WO2019164029A1 - 복수의 채널을 통한 오디오 재생 방법 및 시스템 - Google Patents
복수의 채널을 통한 오디오 재생 방법 및 시스템 Download PDFInfo
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- WO2019164029A1 WO2019164029A1 PCT/KR2018/002159 KR2018002159W WO2019164029A1 WO 2019164029 A1 WO2019164029 A1 WO 2019164029A1 KR 2018002159 W KR2018002159 W KR 2018002159W WO 2019164029 A1 WO2019164029 A1 WO 2019164029A1
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- 238000000034 method Methods 0.000 title claims abstract description 54
- 230000005236 sound signal Effects 0.000 claims description 262
- 230000008859 change Effects 0.000 claims description 19
- 238000004590 computer program Methods 0.000 claims description 12
- 238000004891 communication Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S3/00—Systems employing more than two channels, e.g. quadraphonic
- H04S3/008—Systems employing more than two channels, e.g. quadraphonic in which the audio signals are in digital form, i.e. employing more than two discrete digital channels
Definitions
- the following description relates to a method and system for reproducing audio through a plurality of channels, and more particularly, to an audio reproducing method capable of outputting different sound sources for each channel in relation to one output device having a plurality of channel-specific output units,
- Korean Patent Laid-Open Publication No. 10-2007-0077220 relates to a method for encoding and decoding a multichannel audio signal, and generates a type of extension data that extends a channel of audio data into a multichannel, and encodes the encoded audio data.
- Disclosed is hierarchically encoding extension data extending to a multi-channel so as to correspond to each layer of.
- These conventional audio reproduction techniques output one sound source through a multi-channel so that the listener can feel the stereoscopic sound effect.
- An audio reproduction method capable of outputting a different sound source for each channel with respect to one output device having a plurality of output units for each channel, a computer device for performing the audio reproduction method, and a computer combined with a computer for the audio reproduction method
- a computer program stored on a computer readable recording medium and the recording medium are provided for execution.
- the plurality of channel-specific output units may include a first output unit corresponding to the left channel and a second output unit corresponding to the right channel, the step of selecting the sound source, the play list for each channel
- the first sound source may be selected from the first channel play list for the left channel
- the second sound source may be selected from the second channel play list for the light channel.
- the requesting may include: mixing the first mono channel audio signal of the first sound source selected for the left channel and the second mono channel audio signal of the second sound source selected for the light channel according to a time axis; And requesting a multi-channel audio signal from the server, and outputting the first mono channel audio signal through a first output unit corresponding to the left channel and a second output unit corresponding to the write channel.
- the second mono channel audio signals may be output through the respective channels.
- the step of requesting wherein the server obtains mono channel audio signals for each of the sound sources through the identifiers of the sound sources, and the mono channel audio signals in the channels corresponding to the channel information.
- the server obtains mono channel audio signals for each of the sound sources through the identifiers of the sound sources, and the mono channel audio signals in the channels corresponding to the channel information.
- identifiers of sound sources selected for each channel and channel information corresponding to each of the identifiers of the sound sources may be transmitted to the server.
- the step of receiving the multi-channel audio signal from the server, the multi-channel audio signal may be sequentially received files that are divided into a unit of a predetermined time or size, the files
- the m-th generated file may include the m-th unit audio signal of each of the mono-channel audio signals divided into the unit, for each channel.
- the step of receiving the multi-channel audio signal from the server when the order of the sound source for a specific channel of the plurality of channels is changed or the playback position of the sound source being played for the specific channel is changed And a file generated by changing a unit audio signal of a channel corresponding to the change of the order or the change of the playback position.
- a computer program stored on a computer readable recording medium for causing the computer to execute the audio reproduction method.
- a computer-readable recording medium having recorded thereon a program for executing the audio reproduction method on a computer.
- a computer device comprising: at least one processor implemented to execute instructions readable by the computer device, wherein the at least one processor identifies a plurality of channels corresponding to a plurality of channel-specific output units, and Manages a play list for each channel for each of a plurality of channels, selects a sound source for each channel in the play list for each channel, and transmits the multi-channel audio signal in which the mono channel audio signals of the sound sources selected for each channel are mixed along the time axis to the server. Requesting, receiving the multichannel audio signal from the server, and outputting monochannel audio signals included in the multichannel audio signal through an output unit of a corresponding channel among the plurality of channel-specific output units, respectively. To provide.
- a computer device comprising: at least one processor implemented to execute instructions readable by the computer device, wherein the at least one processor identifies identifiers of the sound sources and the sound sources selected for each of a plurality of channels from a client device Receive channel information corresponding to each of the audio signals, identify mono channel audio signals for each of the sound sources through identifiers of the sound sources, and identify the identified mono channel audio signals on a time axis in the channels corresponding to the channel information.
- a multi-channel audio signal is mixed according to the present invention, and the generated multi-channel audio signal is transmitted to the client device.
- Different sound sources may be output for each channel in relation to one output device having a plurality of output units for each channel.
- different sound sources may be output through the left channel and the right channel to an output device having a first output unit for the left channel and a second output unit for the light channel, such as an earphone or an earset.
- an output device having a first output unit for the left channel and a second output unit for the light channel, such as an earphone or an earset.
- one output device may output different sound sources for each channel corresponding to the plurality of output units linked thereto.
- FIG. 1 is a diagram illustrating an example of a network environment according to an embodiment of the present invention.
- FIG. 2 is a block diagram illustrating an example of a computer device according to an embodiment of the present invention.
- FIG. 3 is a diagram illustrating an example of an audio reproduction environment according to an embodiment of the present invention.
- FIG 4 illustrates an example of mixing mono channel audio signals according to an embodiment of the present invention.
- FIG. 5 is a diagram for one example of changing a sound source included in a play list according to one embodiment of the present invention.
- FIG. 6 is a diagram illustrating an example of audio reproduction using earphones according to an embodiment of the present invention.
- FIG. 7 is a flowchart illustrating an example of an audio reproduction method according to an embodiment of the present invention.
- FIG. 8 is a flowchart illustrating another example of an audio reproduction method according to an embodiment of the present invention.
- the audio reproduction method according to embodiments of the present invention may be implemented through a computer device such as an electronic device and / or a server, which will be described later.
- a computer program according to an embodiment of the present invention may be installed and run on the computer device, and the computer device may perform the audio reproduction method according to the embodiments of the present invention under the control of the driven computer program.
- the computer program described above may be stored in a computer readable recording medium in combination with a computer device for causing the computer to execute the audio reproduction method.
- FIG. 1 is a diagram illustrating an example of a network environment according to an embodiment of the present invention.
- the network environment of FIG. 1 illustrates an example including a plurality of electronic devices 110, 120, 130, and 140, a plurality of servers 150 and 160, and a network 170.
- 1 is an example for describing the invention, and the number of electronic devices and the number of servers are not limited as shown in FIG. 1.
- the plurality of electronic devices 110, 120, 130, and 140 may be a fixed terminal or a mobile terminal implemented with a computer device.
- Examples of the plurality of electronic devices 110, 120, 130, and 140 include a smart phone, a mobile phone, a navigation device, a computer, a notebook computer, a digital broadcasting terminal, a personal digital assistant (PDA), and a portable multimedia player (PMP). , Tablet PC and so on.
- PDA personal digital assistant
- PMP portable multimedia player
- Tablet PC Tablet PC and so on.
- FIG. 1 illustrates the shape of a smartphone as an example of the electronic device 1 110
- the electronic device 1 110 may use a wireless or wired communication method to substantially connect the network 170. It may refer to one of various physical computer devices capable of communicating with other electronic devices 120, 130, 140 and / or server 150, 160 via.
- the communication method is not limited and may include short-range wireless communication between devices as well as a communication method utilizing a communication network (for example, mobile communication network, wired internet, wireless internet, and broadcasting network) that the network 170 may include.
- the network 170 may include a personal area network (PAN), a local area network (LAN), a campus area network (CAN), a metropolitan area network (MAN), a wide area network (WAN), and a broadband network (BBN). And one or more of networks such as the Internet.
- the network 170 may also include any one or more of network topologies, including bus networks, star networks, ring networks, mesh networks, star-bus networks, trees, or hierarchical networks, but It is not limited.
- Each of the servers 150 and 160 communicates with the plurality of electronic devices 110, 120, 130, and 140 via the network 170 to provide a command, code, file, content, service, or the like. It may be implemented in devices.
- the server 150 may be a service (eg, a social network service, a messaging service, a search service, a mail service, etc.) with a plurality of electronic devices 110, 120, 130, and 140 connected through the network 170. It may be a system for providing a content providing service).
- FIG. 2 is a block diagram illustrating an example of a computer device according to an embodiment of the present invention.
- Each of the plurality of electronic devices 110, 120, 130, and 140 or each of the servers 150 and 160 described above may be implemented by the computer device 200 shown in FIG. 2.
- a computer program according to an embodiment may be installed and run on the computer device 200, and the computer device 200 may play an audio according to embodiments of the present disclosure under control of the driven computer program. Can be performed.
- the computer device 200 may include a memory 210, a processor 220, a communication interface 230, and an input / output interface 240.
- the memory 210 may be a computer-readable recording medium, and may include a permanent mass storage device such as random access memory (RAM), read only memory (ROM), and a disk drive.
- RAM random access memory
- ROM read only memory
- the non-volatile mass storage device such as a ROM and a disk drive may be included in the computer device 200 as a separate permanent storage device separate from the memory 210.
- the memory 210 may store an operating system and at least one program code. These software components may be loaded into the memory 210 from a computer-readable recording medium separate from the memory 210.
- Such a separate computer-readable recording medium may include a computer-readable recording medium such as a floppy drive, disk, tape, DVD / CD-ROM drive, memory card, and the like.
- the software components may be loaded into the memory 210 via the communication interface 230 rather than the computer readable recording medium.
- software components may be loaded into memory 210 of computer device 200 based on a computer program installed by files received via network 170.
- the processor 220 may be configured to process instructions of a computer program by performing basic arithmetic, logic, and input / output operations. Instructions may be provided to the processor 220 by the memory 210 or the communication interface 230. For example, the processor 220 may be configured to execute a command received according to a program code stored in a recording device such as the memory 210.
- the communication interface 230 may provide a function for the computer device 200 to communicate with other devices (eg, storage devices described above) through the network 170. For example, a request, a command, data, a file, etc. generated by the processor 220 of the computer device 200 according to a program code stored in a recording device such as the memory 210 may be controlled according to the control of the communication interface 230. 170 may be transferred to other devices. Conversely, signals, commands, data, files, and the like from other devices may be received by the computer device 200 via the communication interface 230 of the computer device 200 via the network 170. Signals, commands, data, and the like received through the communication interface 230 may be transmitted to the processor 220 or the memory 210, and the files and the like may be further included in the storage medium (described above). Persistent storage).
- the input / output interface 240 may be a means for interfacing with the input / output device 250.
- the input device may include a device such as a microphone, a keyboard or a mouse
- the output device may include a device such as a display or a speaker.
- the input / output interface 240 may be a means for interfacing with a device in which functions for input and output are integrated into one, such as a touch screen.
- the input / output device 250 may be configured as the computer device 200 and one device.
- the computer device 200 may include fewer or more components than the components of FIG. 2. However, it is not necessary to clearly show most of the prior art components.
- the computer device 200 may be implemented to include at least some of the input and output devices 250 described above, or may further include other components such as a transceiver, a database, and the like.
- the client device 310 may include or be associated with output units 320 for N (natural numbers of two or more) channels.
- the client device 310 is wired and / or wirelessly connected with an earphone or earset having two output units, an output unit for a left channel and an output unit for a light channel, thereby providing a channel-specific audio signal to the earphone or earset.
- You can output the client device 310 may include a device having five output units, such as a speaker having five channels, or may be wired and / or connected to the device.
- the client device 310 may identify output units for each channel, and manage a playlist for each channel for each channel.
- N-channel play lists 330 corresponding to each of the output units 320 for N channels are disclosed. If there are output units for two channels, such as an earphone or an earset, the client device 310 may generate and manage a playlist for the left channel and a playlist for the right channel, respectively.
- the client device 310 may control to output the sound source of the play list of the corresponding channel to each of the output units 320 for the N channels.
- the client device 310 may identify sound sources to be reproduced from each of the N channel-specific play lists 330, and transmit the information about the identified sound sources to the server 340 to identify the sound sources. May request audio signals for.
- the server 340 does not simply provide audio signals of each of the requested sound sources, but mixes mono channel audio signals of the requested sound sources according to a time axis in a corresponding channel to mix one multichannel audio signal.
- the generated multi-channel audio signal may be transmitted to the client device 310.
- the server 340 may include a first mono channel audio signal for the first sound source of the first channel, a second mono channel audio signal for the second sound source of the second channel,.
- the N-channel audio signals for the N-th sound source of the N-th channel may be mixed according to a time axis to generate an N-channel audio signal, and the generated N-channel audio signal may be transmitted to the client device 310.
- each of the N mono channel audio signals included in the N channel audio signal may include information about which channel of the plurality of channels in the client device 310 is an audio signal.
- the client device 310 may correspond to each of the N mono channel audio signals included in the N channel audio signal to a plurality of channels, and the output unit of each corresponding channel among the output units 320 for the N channels. Through the corresponding mono channel audio signal can be output. For example, assume that client device 310 has received a stereo audio signal from server 340 that includes a first mono channel audio signal for a left channel and a second mono channel audio signal for a right channel.
- the client device 310 may output the first mono channel audio signal through the left channel output unit and the second mono channel audio signal through the write channel output unit. Accordingly, different sound sources may be output to the left channel output unit and the light channel output unit of the earphone or the earset, respectively. In other words, it is possible for two users to listen to different sound sources at the same time through earphones or earphones connected to one client device 310.
- N channel output units 320 and the N channel specific playlists 330 it will be readily understood that one client device 310 can simultaneously output N different sound sources. .
- FIG. 4 illustrates an example of mixing mono channel audio signals according to an embodiment of the present invention.
- the 1-1 sound source and the 1-2 sound source are sequentially played in the play list for the first channel, and the 2-1 sound source and the 2-2 sound source in the play list for the second channel.
- the case where the N-1 sound sources and the N-2 sound sources are reproduced sequentially is considered in the play list for the Nth channel.
- Each sound source may have a different play time.
- the client device 310 generates a 1-1 sound source, a 2-1 sound source
- the server 340 may generate the 1-1 mono channel audio signal for the 1-1 sound source at the first time point 410, and the 2-1. 2-1 mono channel audio signal for sound source,...
- the N channel audio signal 440 may be generated by mixing a total of N mono channel audio signals along a time axis, such as an N-1 mono channel audio signal for an N-1 sound source.
- the server 340 may receive information about the next sound source from the client device 310 in the play list for the second channel. Can be.
- the play order of the sound sources in the play list may be set based on the order of the sound sources and the repeat play flag.
- the server 340 may receive in advance all the sound sources of the N-channel play list 330 and information about the order thereof.
- the server 340 may include a 1-1 mono channel audio signal for a 1-1 sound source, a 2-2 mono channel audio signal for a 2-2 sound source,.
- the N channel audio signal 440 may be generated by mixing a total of N mono channel audio signals along a time axis, such as an N-1 mono channel audio signal for an N-1 sound source.
- the server 340 may receive information about the next sound source from the client device 310 in the play list for the N-th channel. Can be.
- the server 340 may include a 1-1 mono channel audio signal for a 1-1 sound source, a 2-2 mono channel audio signal for a 2-2 sound source,.
- the N channel audio signal 440 may be generated by mixing a total of N mono channel audio signals along a time axis, such as an N-2 mono channel audio signal for an N-2 sound source.
- the multi-channel audio signal generated by the server 340 may be generated for at least one sound source for each channel selected from each of the N channel play lists 330.
- the lengths of the sound sources may be different from each other, and it will be easily understood that the length of the N channel audio signal 440 may correspond to the reproduction length of the channel having the longest overall play time.
- the server 340 may be provided after generating all the multi-channel audio signal, but may also provide only a portion generated at the same time as the generation of the multi-channel audio signal in a streaming method. In this case, the change of the sound sources or the change of the playback position in each of the N channel play lists 330 may be reflected in the generation of the multichannel audio signal.
- FIG. 5 is a diagram for one example of changing a sound source included in a play list according to one embodiment of the present invention.
- the case where the sound sources included in each of the N channel play lists 330 are changed may be considered.
- a case in which the 2-1 sound source is changed to the 2-5 sound source may be considered between the first view 410 and the second view 420.
- FIG. 5 illustrates an example in which the 2-1 sound source is changed to the 2-5 sound source at the fourth time point 510 which is a time point between the first time point 410 and the second time point 420.
- the client device 310 may inform the server 340 that the 2-1 sound source is changed to the 2-5 sound source in the second channel, and the server 340 as shown in FIG.
- the N-channel audio signal 440 may be generated using the 2-5 mono channel audio signal for the 2-5 sound source instead of the 2-1 mono channel audio signal for the sound source.
- the server 340 may include a 1-1 mono channel audio signal for a 1-1 sound source and a 2-5 for 2-5 sound source.
- the N channel audio signal 440 may be generated by mixing a total of N mono channel audio signals along a time axis, such as an N-2 mono channel audio signal for an N-2 sound source.
- one mono channel audio signal for each sound source may be generated as a plurality of mono channel audio signals (hereinafter, referred to as “unit audio signals”) divided for each predetermined time or for each unit.
- the 12 unit audio signals are divided into 1-1-1 unit audio signals and 1-1-12 unit audio signals.
- the 2-1 sound source has a length of 50 seconds
- a total of 5 units of the 2-1-1 unit audio signal and the 2-1-5 unit audio signal are assumed.
- Audio signals can be generated.
- the N-1th sound source has a length of 1 minute and 30 seconds
- a total of nine pieces of the N-1-1 unit audio signals to the N-1-9 unit audio signals are provided.
- Unit audio signals may be generated.
- the first 10-second unit of the N-channel audio signal 440 is the first-first-1 unit audio signal, the second-1-1 unit audio signal,.
- the N-1-1 unit audio signals may correspond to N unit audio signals.
- the 2-1 sound source has a length of 45 seconds.
- the 2-1-5 unit audio signal generated for the 2-1 sound source may include the audio signal for the last 5 seconds of the 2-1 sound source for division of the 10 second unit for the sound source. Rather, it may be generated to further include an audio signal for the first 5 seconds of the next 2-5 sound source.
- the N-channel audio signal 440 generated for the embodiment of FIG. 4 and provided to the client device 310 may include the audio signal for the last 5 seconds of the 2-1 sound source and the 5 th 10 second unit.
- 2-2 may include a 2-1-5 unit audio signal including an audio signal for the first 5 seconds of the sound source. If the 2-5 sound source is added between the 2-1 sound source and the 2-2 sound source at the fourth time point 510 as shown in the embodiment of FIG. 5 The sound source should be played.
- the server 340 regenerates the 2-1-5 unit audio signal to include the audio signal for the first 5 seconds of the 2-5 sound source instead of the audio signal for the first 5 seconds of the 2-2 sound source.
- Regenerated 2-1-5 unit audio signal included in the N-channel audio signal 440 provided by transmitting the regenerated 2-1-5 unit audio signal to the client device 310 Can be replaced with -5 unit audio signal.
- the N-channel audio signal 440 is generated by dividing the N-channel audio signal into a plurality of N-channel audio signals in a unit such as a predetermined time, it is possible to change or reproduce the sound source of each of the N-channel play lists 330.
- the entire N-channel audio signal 440 does not need to be regenerated, but only after the section associated with the change can be changed.
- the server 340 provides a streaming service to the client device 310
- the sound source of a specific channel is changed, only the unit audio signals from the point of time when the sound source is changed are combined again, thereby the client device 310.
- the N-channel audio signal 440 may be provided while corresponding to a change in a specific channel.
- the N channel audio signal 440 may be generated in the form of a file for each unit.
- the first 10-second unit of the N-channel audio signal 440 may be a first-first-first unit audio signal, a second-1-1 unit audio signal,...
- the N unit audio signals of the N-1-1 unit audio signals may be mixed and generated as a first file included therein.
- the aforementioned 2-1-5 unit audio signal may be generated as a fifth file corresponding to the fifth 10 second unit of the N channel audio signal 440.
- the server 340 regenerates the fifth file and transmits the fifth file to the client device 310.
- N channel audio signal 440 may be generated. As described above, since the N channel audio signal 440 is mixed with changes in the playlists 330 for each channel, users who listen to the N channels change the sound source in real time for their channels. Or change the playback position.
- FIG. 6 is a diagram illustrating an example of audio reproduction using earphones according to an embodiment of the present invention.
- the playlist 630 for the left channel includes a three-minute sound source 1, a four-minute sound source 2, and a two-minute sound source 3, and the play list 640 for the light channel.
- the playlist 630 for the left channel includes a three-minute sound source 1, a four-minute sound source 2, and a two-minute sound source 3, and the play list 640 for the light channel.
- the playlist 630 for the left channel includes a three-minute sound source 1, a four-minute sound source 2, and a two-minute sound source 3, and the play list 640 for the light channel.
- the client device 310 may transmit information (eg, identifiers and playback order of sound sources) and channel information about sound sources to the server 340 according to the play order on the play lists 630 and 640.
- 340 may generate a multi-channel audio signal based on the received information.
- the multi-channel audio signal generated by the server 340 may include a mono channel audio signal for the left channel and a mono channel audio signal for the right channel.
- the multi-channel audio signal for the first 2 minutes may include a mono channel audio signal of sound source 1 for the left channel and a mono channel audio signal of sound source a for the right channel.
- the playback length of sound source a is 2 minutes
- sound source a ends playback time
- the multi-channel audio signal for the next 1 minute is the mono channel audio signal of sound source 1 for the left channel and the mono of audio source b for the light channel. It may include a channel audio signal.
- the playback length of sound source 1 is 3 minutes, sound source 1 ends the playback time, and the multi-channel audio signal for the next 2 minutes is output for the mono channel audio signal of sound source 2 and the light channel for left channel.
- the multichannel audio signal for the next 2 minutes is the mono channel audio signal of sound source 2 for the left channel and the mono channel of sound source c for the light channel. It may include an audio signal. After generating a multichannel audio signal for a reproduction length of 9 minutes in this manner, the monochannel audio signal for all sound sources for the left channel is included in the multichannel audio signal. On the other hand, for the light channel, since there is a one-minute playback length for sound source c, the multi-channel audio signal for the last one minute is left blank with the empty mono channel audio signal (or any mono channel audio signal) for the left channel. It may include a mono channel audio signal of the sound source c for the channel.
- the optional mono channel audio signal may include, for example, an audio signal randomly generated by the server 340 (eg, a standby guide audio signal) or a mono channel audio signal of a sound source c for a light channel.
- the server 340 may again utilize the mono channel audio of the first sound source (source 1 in the embodiment of FIG. 6) as any mono channel audio signal for the left channel.
- repeat play flag is set in the play list
- the mono channel audio signals of the sound sources can be used in the order according to the repeat play flag set in each play list.
- FIG. 7 is a flowchart illustrating an example of an audio reproduction method according to an embodiment of the present invention.
- the audio reproduction method according to the present embodiment may be performed by the computer device 200 implementing the client device 310 described above.
- the processor 220 of the computer device 200 may be implemented to execute a control instruction according to a code of an operating system included in the memory 210 or a code of at least one program.
- the processor 220 may perform the steps 710 to 760 included in the audio reproduction method of FIG. 7 according to a control command provided by a code stored in the computer device 200. 200) can be controlled.
- the computer device 200 may identify a plurality of channels corresponding to the plurality of channel-specific output units.
- the plurality of channels may be N (N is a natural number of 2 or more).
- the earphone or the earset may include two channel-specific output units, a first output unit corresponding to the left channel and a second output unit corresponding to the right channel.
- the computer device 200 may identify two channels corresponding to two channel-specific output units.
- the computer device 200 may manage a play list for each channel for each of the plurality of channels. For example, in the example of the earphone or earset described above, a playlist for the left channel and a playlist for the right channel may be considered. Each play list may include sound source lists independently.
- the computer device 200 may select a sound source for each channel in the channel-specific play list. For example, the computer device 200 may select at least one sound source from the first play list for the left channel and at least one sound source from the second play list for the right channel. As another example, the computer device 200 may select all the sound sources of the playlist for the left channel and all the sound sources of the playlist for the right channel.
- the computer apparatus 200 may request a multi-channel audio signal in which mono channel audio signals of sound sources selected for each channel are mixed along a time axis, to the server.
- the computer device 200 may request a multi-channel audio signal corresponding to an individual channel from the mono channel audio signals of different sound sources, rather than the multi-channel of one sound source, to the server.
- the computer device 200 mixes the first mono channel audio signal of the first sound source selected for the left channel and the second mono channel audio signal of the second sound source selected for the light channel according to the time axis. The multi-channel audio signal to the server.
- the computer device 200 may transmit the identifiers of the sound sources selected for each channel and the channel information corresponding to each of the identifiers of the sound sources to the server.
- the server acquires mono channel audio signals for each of the sound sources through identifiers of the sound sources, and generates and transmits a multichannel audio signal in which the mono channel audio signals are mixed along the time axis in channels corresponding to the channel information. Can be.
- the computer device 200 may receive a multichannel audio signal from a server.
- the multi-channel audio signal received from the server includes the first mono channel audio signal of the first sound source selected for the left channel and the second mono channel audio signal of the second sound source selected for the light channel in the example of the earphone or earset described above. can do.
- the computer device 200 may sequentially receive files in which a multi-channel audio signal is divided into units of a predetermined time or size.
- the m-th file of the files (where m is a natural number) may include the m-th unit audio signal of the unit audio signals in which the mono channel audio signals are divided into the unit, for each channel.
- the first 10-second unit of the N-channel audio signal 440 includes the first-first-first unit audio signal, the second-1-1 unit audio signal,.
- the unit audio signal for each of the N channels of the N-1-1 unit audio signal may be generated as a mixed first file.
- the computer device 200 changes the order or changes in the play position.
- the file generated by changing the unit audio signal may be received from the server. If the computer device 200 has received the file from the server before the change of the order or the change of the playback position, and the audio signals corresponding to the file have not been played yet, the computer device 200 has previously received the file. You can replace the file with the regenerated file.
- the computer apparatus 200 may output the mono channel audio signals included in the multi channel audio signal through the output unit of the corresponding channel among the plurality of channel output units.
- the computer device 200 receives a first mono channel audio signal through a first output unit corresponding to a left channel and a second mono channel audio signal through a second output unit corresponding to a right channel. You can output respectively. Accordingly, the first listener wearing the first output unit for the left channel and the second listener wearing the second output unit for the light channel may output output units included in an earphone or earset connected to one computer device 200. You will be able to enjoy different sound sources.
- FIG. 8 is a flowchart illustrating another example of an audio reproduction method according to an embodiment of the present invention.
- the audio reproduction method according to the present embodiment may be performed by the computer device 200 implementing the server 340 described above.
- the processor 220 of the computer device 200 may be implemented to execute a control instruction according to a code of an operating system included in the memory 210 or a code of at least one program.
- the processor 220 may perform the steps 810 to 840 included in the audio reproduction method of FIG. 8 according to a control command provided by a code stored in the computer device 200. 200) can be controlled.
- the computer device 200 may receive identifiers of sound sources selected for each of a plurality of channels and channel information corresponding to each of the identifiers of the sound sources from the client device.
- the plurality of channels may correspond to each of a plurality of channel-specific output units of the client device
- the sound sources may correspond to sound sources selected for each channel in a plurality of channel play lists managed by the client device for each of the plurality of channels. .
- the computer device 200 may identify mono channel audio signals for each of the sound sources through identifiers of the sound sources.
- the computer device 200 may identify mono channel audio signals for each of the changed sound sources, through steps 810 and 820.
- the computer device 200 may further receive information on the playback position of the sound source from the client device, and the mono channel audio signal from the playback position based on the received information. May be identified.
- the computer device 200 may generate a multi-channel audio signal in which the identified mono channel audio signals are mixed on a time axis in channels corresponding to the channel information.
- the computer device 200 may sequentially generate files in which the multichannel audio signal is divided in units of a predetermined time or size in step 830.
- the m-th file of the files (where m is a natural number) may include the m-th unit audio signal of the unit audio signals in which the mono channel audio signals are divided into the unit, for each channel. have.
- the first 10-second unit of the N-channel audio signal 440 includes the first-first-first unit audio signal, the second-1-1 unit audio signal,.
- the unit audio signal for each of the N channels of the N-1-1 unit audio signal may be generated as a mixed first file.
- the computer device 200 changes the order or the channel corresponding to the change of the playback position.
- a file in which the unit audio signal is changed may be generated and transmitted to the client device. If the client device received the file before changing the order or before changing the playback position, and yet before playing the file, the client device may replace the previously received file with the reproduced file.
- the computer device 200 may transmit the generated multichannel audio signal to the client device.
- the client device may output mono channel audio signals included in the generated multichannel audio signal through an output unit of a corresponding channel among a plurality of channel-specific output units of the client device.
- different sound sources may be output for each channel in relation to one output device having a plurality of channel-specific output units.
- the system or apparatus described above may be implemented as a hardware component, a software component or a combination of hardware components and software components.
- the devices and components described in the embodiments are, for example, processors, controllers, arithmetic logic units (ALUs), digital signal processors, microcomputers, field programmable gate arrays (FPGAs).
- ALUs arithmetic logic units
- FPGAs field programmable gate arrays
- PLU programmable logic unit
- the processing device may execute an operating system (OS) and one or more software applications running on the operating system.
- the processing device may also access, store, manipulate, process, and generate data in response to the execution of the software.
- processing device includes a plurality of processing elements and / or a plurality of types of processing elements. It can be seen that it may include.
- the processing device may include a plurality of processors or one processor and one controller.
- other processing configurations are possible, such as parallel processors.
- the software may include a computer program, code, instructions, or a combination of one or more of the above, and configure the processing device to operate as desired, or process it independently or collectively. You can command the device.
- Software and / or data may be any type of machine, component, physical device, virtual equipment, computer storage medium or device in order to be interpreted by or to provide instructions or data to the processing device. It can be embodied in.
- the software may be distributed over networked computer systems so that they may be stored or executed in a distributed manner.
- Software and data may be stored on one or more computer readable media.
- the method according to the embodiment may be embodied in the form of program instructions that can be executed by various computer means and recorded in a computer readable medium.
- the computer readable medium may include program instructions, data files, data structures, etc. alone or in combination.
- the program instructions recorded on the media may be those specially designed and constructed for the purposes of the embodiments, or they may be of the kind well-known and available to those having skill in the computer software arts.
- Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tape, optical media such as CD-ROMs, DVDs, and magnetic disks, such as floppy disks.
- Such a recording medium may be various recording means or storage means in the form of a single or several hardware combined, and is not limited to a medium directly connected to any computer system, but may be distributed on a network.
- Examples of program instructions include not only machine code generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like.
Abstract
Description
Claims (16)
- 복수의 채널별 출력 유닛에 대응하는 복수의 채널을 식별하는 단계;상기 복수의 채널 각각을 위한 채널별 플레이 리스트를 관리하는 단계;상기 채널별 플레이 리스트에서 채널마다 음원을 선택하는 단계;상기 채널마다 선택된 음원들의 모노 채널 오디오 신호들이 시간축에 따라 믹싱된 멀티채널 오디오 신호를 서버로 요청하는 단계;상기 서버로부터 상기 멀티채널 오디오 신호를 수신하는 단계; 및상기 멀티채널 오디오 신호가 포함하는 모노 채널 오디오 신호들을 상기 복수의 채널별 출력 유닛 중 대응하는 채널의 출력 유닛을 통해 각각 출력하는 단계를 포함하는 오디오 재생 방법.
- 제1항에 있어서,상기 복수의 채널별 출력 유닛은 레프트 채널에 대응하는 제1 출력 유닛 및 라이트 채널에 대응하는 제2 출력 유닛을 포함하고,상기 음원을 선택하는 단계는,상기 채널별 플레이 리스트 중 상기 레프트 채널을 위한 제1 채널 플레이 리스트에서 제1 음원을 선택하고, 상기 채널별 플레이 리스트 중 상기 라이트 채널을 위한 제2 채널 플레이 리스트에서 제2 음원을 선택하는, 오디오 재생 방법.
- 제2항에 있어서,상기 요청하는 단계는,상기 레프트 채널에 대해 선택된 제1 음원의 제1 모노 채널 오디오 신호 및 상기 라이트 채널에 대해 선택된 제2 음원의 제2 모노 채널 오디오 신호가 시간축에 따라 믹싱된 멀티채널 오디오 신호를 상기 서버로 요청하고,상기 출력하는 단계는,상기 레프트 채널에 대응하는 제1 출력 유닛을 통해 상기 제1 모노 채널 오디오 신호를, 상기 라이트 채널에 대응하는 제2 출력 유닛을 통해 상기 제2 모노 채널 오디오 신호를 각각 출력하는, 오디오 재생 방법.
- 제1항에 있어서,상기 요청하는 단계는,상기 서버가 상기 음원들의 식별자들을 통해 상기 음원들 각각을 위한 모노 채널 오디오 신호들을 획득하고, 상기 모노 채널 오디오 신호들을 상기 채널 정보에 대응하는 채널들에서 시간축에 따라 믹싱한 멀티채널 오디오 신호를 생성 및 전송하도록, 상기 채널마다 선택된 음원들의 식별자들 및 상기 음원들의 식별자들 각각에 대응하는 채널 정보를 상기 서버로 전송하는, 오디오 재생 방법.
- 제1항에 있어서,상기 서버로부터 상기 멀티채널 오디오 신호를 수신하는 단계는,상기 멀티채널 오디오 신호가 기설정된 시간 또는 크기의 단위로 분할되어 포함된 파일들을 순차적으로 수신하고,상기 파일들 중 m(상기 m은 자연수) 번째로 생성된 파일은 상기 모노 채널 오디오 신호들 각각이 상기 단위로 분할된 단위 오디오 신호들 중 m 번째로 분할된 단위 오디오 신호를 채널별로 포함하는 오디오 재생 방법.
- 제5항에 있어서,상기 서버로부터 상기 멀티채널 오디오 신호를 수신하는 단계는,상기 복수의 채널 중 특정 채널에 대한 음원의 순서가 변경되거나 상기 특정 채널에 대해 재생중인 음원의 재생 위치가 변경되는 경우, 상기 순서의 변경 또는 상기 재생 위치의 변경과 대응하는 채널의 단위 오디오 신호를 변경하여 생성된 파일을 상기 서버로부터 수신하는 오디오 재생 방법.
- 클라이언트 장치로부터 복수의 채널마다 선택된 음원들의 식별자들 및 상기 음원들의 식별자들 각각에 대응하는 채널 정보를 수신하는 단계;상기 음원들의 식별자들을 통해 상기 음원들 각각을 위한 모노 채널 오디오 신호들을 식별하는 단계;상기 식별된 모노 채널 오디오 신호들을 상기 채널 정보에 대응하는 채널들에서 시간축에 따라 믹싱한 멀티채널 오디오 신호를 생성하는 단계; 및상기 생성된 멀티채널 오디오 신호를 상기 클라이언트 장치로 전송하는 단계를 포함하는 오디오 재생 방법.
- 제7항에 있어서,상기 복수의 채널은 상기 클라이언트 장치의 복수의 채널별 출력 유닛 각각에 대응하고,상기 음원들은 상기 복수의 채널 각각에 대해 상기 클라이언트 장치에서 관리되는 복수의 채널별 플레이 리스트에서 채널마다 선택되는, 오디오 재생 방법.
- 제7항에 있어서,상기 생성된 멀티채널 오디오 신호는, 상기 멀티채널 오디오 신호에 포함되는 모노 채널 오디오 신호들이 상기 클라이언트 장치의 복수의 채널별 출력 유닛 중 대응하는 채널의 출력 유닛을 통해 각각 출력되도록 구현되는, 오디오 재생 방법.
- 제7항에 있어서,상기 멀티채널 오디오 신호를 생성하는 단계는,상기 멀티채널 오디오 신호가 기설정된 시간 또는 크기의 단위로 분할되어 포함된 파일들을 순차적으로 생성하고,상기 파일들 중 m(상기 m은 자연수) 번째로 생성된 파일은 상기 모노 채널 오디오 신호들 각각이 상기 단위로 분할된 단위 오디오 신호들 중 m 번째로 분할된 단위 오디오 신호를 채널별로 포함하는 오디오 재생 방법.
- 제10항에 있어서,상기 복수의 채널 중 특정 채널에 대한 음원의 순서가 변경되거나 상기 특정 채널에 대해 재생중인 음원의 재생 위치가 변경되는 경우, 상기 순서의 변경 또는 상기 재생 위치의 변경과 대응하는 채널의 단위 오디오 신호를 변경한 파일을 생성하여 상기 클라이언트 장치로 전송하는 단계를 더 포함하는 오디오 재생 방법.
- 제1항 내지 제11항 중 어느 한 항의 방법을 컴퓨터에 실행시키기 위한 컴퓨터 프로그램이 기록되어 있는 것을 특징으로 하는 컴퓨터에서 판독 가능한 기록매체.
- 컴퓨터 장치에 있어서,상기 컴퓨터 장치에서 판독가능한 명령을 실행하도록 구현되는 적어도 하나의 프로세서를 포함하고,상기 적어도 하나의 프로세서에 의해,클라이언트 장치로부터 복수의 채널마다 선택된 음원들의 식별자들 및 상기 음원들의 식별자들 각각에 대응하는 채널 정보를 수신하고,상기 음원들의 식별자들을 통해 상기 음원들 각각을 위한 모노 채널 오디오 신호들을 식별하고,상기 식별된 모노 채널 오디오 신호들을 상기 채널 정보에 대응하는 채널들에서 시간축에 따라 믹싱한 멀티채널 오디오 신호를 생성하고,상기 생성된 멀티채널 오디오 신호를 상기 클라이언트 장치로 전송하는,컴퓨터 장치.
- 제13항에 있어서,상기 복수의 채널은 상기 클라이언트 장치의 복수의 채널별 출력 유닛 각각에 대응하고,상기 음원들은 상기 복수의 채널 각각에 대해 상기 클라이언트 장치에서 관리되는 복수의 채널별 플레이 리스트에서 채널마다 선택되는, 컴퓨터 장치.
- 제13항에 있어서,상기 생성된 멀티채널 오디오 신호는, 상기 멀티채널 오디오 신호에 포함되는 모노 채널 오디오 신호들이 상기 클라이언트 장치의 복수의 채널별 출력 유닛 중 대응하는 채널의 출력 유닛을 통해 각각 출력되도록 구현되는, 컴퓨터 장치.
- 제13항에 있어서,상기 적어도 하나의 프로세서에 의해,상기 멀티채널 오디오 신호가 기설정된 시간 또는 크기의 단위로 분할되어 포함된 파일들을 순차적으로 생성하고,상기 파일들 중 m(상기 m은 자연수) 번째로 생성된 파일은 상기 모노 채널 오디오 신호들 각각이 상기 단위로 분할된 단위 오디오 신호들 중 m 번째로 분할된 단위 오디오 신호를 채널별로 포함하는 컴퓨터 장치.
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JP2021518926A (ja) | 2021-08-05 |
JP7068480B2 (ja) | 2022-05-16 |
KR20240033134A (ko) | 2024-03-12 |
KR20200113224A (ko) | 2020-10-06 |
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