WO2017117733A1 - 信息分发方法和装置以及信息接收方法和装置 - Google Patents

信息分发方法和装置以及信息接收方法和装置 Download PDF

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Publication number
WO2017117733A1
WO2017117733A1 PCT/CN2016/070207 CN2016070207W WO2017117733A1 WO 2017117733 A1 WO2017117733 A1 WO 2017117733A1 CN 2016070207 W CN2016070207 W CN 2016070207W WO 2017117733 A1 WO2017117733 A1 WO 2017117733A1
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information
mark
module
frequency
broadcast
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PCT/CN2016/070207
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English (en)
French (fr)
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谢晓辉
蔡振华
傅静静
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北京司响无限文化传媒有限公司
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Priority to PCT/CN2016/070207 priority Critical patent/WO2017117733A1/zh
Publication of WO2017117733A1 publication Critical patent/WO2017117733A1/zh

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    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech 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

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  • the present invention generally relates to information distribution and reception technologies, and in particular to a method and apparatus for rapid information distribution based on voice coding and an apparatus and apparatus for receiving information.
  • the QR code is printed on the ticket surface for sale.
  • the user who purchased the ticket accesses the web page specifically created for the event by scanning the QR code, which can provide any detailed information related to the activity.
  • this method is relatively efficient and saves environmental protection, it still cannot solve the problem of targeted and rapid delivery of real-time information.
  • this method can not only transmit the detailed information of A to the live audience when performing program A, but push all the link information to the audience, and the viewer selects from a large number of information, so the user experience is poor, the usage rate is low. Not high, the efficiency of information distribution is low.
  • the way to embed the QR code does not solve the instant distribution of relevant information.
  • the live audience of a football match may just miss the goal that just happened or the player who did not see the goal just scored. I hope to see the moment of the goal immediately.
  • This situation is also solved by the above method of embedding the two-dimensional code.
  • the present invention provides a technique for quickly distributing and receiving information based on voice coding. Surgery.
  • the information to be distributed is encoded into a sound segment, mixed into the broadcast content of the scene, and the information is broadcasted through the content broadcasted on the spot, thereby realizing the rapid and effective distribution of information, and the audience on the scene passes through the client.
  • the terminal receives the sound segment in the broadcast, and accesses the distributed information in real time after decoding.
  • the present invention provides an information distribution method, including:
  • the mark is represented as a 2-byte unsigned integer, an 8-byte unsigned integer, or a 16-byte unsigned integer.
  • the step of converting the encoded mark into an audio file includes:
  • the digital signal is written as an audio file.
  • the present invention also provides an information distribution apparatus, including:
  • a conversion module for converting the encoded mark into an audio file
  • a mixing module for mixing the audio file with content to be broadcast
  • a broadcast module for broadcasting the content that has been mixed.
  • the encoding module represents the mark as a 2-byte unsigned integer, an 8-byte unsigned integer or a 16-byte unsigned integer.
  • the conversion module includes:
  • bitstream forming module configured to convert the encoded tag into a bitstream
  • a spread spectrum module configured to perform direct sequence spread spectrum baseband modulation on the bit stream by using a spreading sequence
  • a modulation module configured to perform low-pass filtering and quadrature modulation on the obtained direct sequence spread spectrum baseband modulated signal to obtain an audio signal whose center frequency is a desired frequency, wherein the desired frequency is a frequency that does not affect an audiovisual experience;
  • a sampling module for sampling and quantizing the audio signal to obtain a digital signal
  • a formatting module for writing the digital signal into an audio file.
  • an information receiving method includes:
  • the distributed information corresponding to the tag is returned from the database.
  • the sound signal of the broadcast is received and recorded through the microphone.
  • the information receiving apparatus comprises:
  • a receiving unit configured to receive and record a broadcast sound signal
  • a detecting unit detecting that the center frequency in the recorded sound signal is an audio signal of a desired frequency, wherein the desired frequency is a frequency that does not affect the audiovisual experience;
  • a decoding unit configured to restore the audio file to the mark, wherein the mark is stored in a database in a one-to-one correspondence with the distributed information
  • a rendering unit configured to return the distributed information corresponding to the mark from the database according to the mark.
  • the receiving unit is a microphone.
  • the information to be distributed is encoded into a sound segment.
  • the frequency band in the live broadcast does not affect the audiovisual experience, and the impact on the audience is small, and the information is distributed through the broadcast, real-time, fast, efficient, environmentally friendly, and low in cost.
  • FIG. 1 is a schematic diagram of an information distribution process in accordance with the present invention.
  • FIG. 2 is a schematic block diagram of an information distribution apparatus according to the present invention.
  • FIG. 3 is a schematic illustration of an information receiving process in accordance with the present invention.
  • Figure 4 is a schematic block diagram of an information receiving apparatus according to the present invention.
  • the main object of the present invention is to achieve rapid distribution of information at the event site.
  • the event site described here may include, but is not limited to, any large-scale gatherings, concerts, drama performances, sports events, competitions, etc., which are broadcasted on occasion from the scene.
  • the information distribution method includes the following steps:
  • the information to be distributed is a web page link introduced by the player who just scored. Assign a unique tag to this web page link.
  • the tags may be assigned in turn according to certain rules, such as the format requirements of the database storage data, or the index of the database storage data may be used as a mark.
  • the information to be distributed can be stored in the database as follows:
  • index number 1 can be used as a mark.
  • the information to be distributed may be stored in accordance with the requirements and format of the database storage data, and the information to be distributed and/or specified may be assigned to the information to be distributed.
  • the tag can be encoded and/or represented as a 2-byte unsigned integer.
  • This encoding can represent 65536 tags. It should be understood that the present invention is not limited to this encoding, and that the mark can be encoded into an 8-byte unsigned integer or a 16-byte unsigned integer and any other encoding as long as the encoded mark can be converted into a subsequent implementation.
  • the audio file is fine.
  • the encoded mark can be converted to an audio file in the following manner:
  • the encoded tag for example, a 2-byte unsigned integer (or an 8-byte unsigned integer or a 16-byte unsigned integer), from the least significant bit (LSB) to the most significant bit (MSB) Converting the sequence into a bit stream;
  • LSB least significant bit
  • MSB most significant bit
  • the sampling rate is a sampling rate of 48 kHz, and the quantization rate is 16 bits;
  • the desired frequency refers to a frequency that does not affect the viewer's audiovisual experience, or a frequency at which the viewer cannot perceive the sound, for example, a frequency between 17-20 kHz.
  • the audio file After the audio file is obtained, it is mixed with the content to be broadcast. After the goal has just occurred, an exciting background music may be broadcast on the scene. At this time, the audio file obtained in step 103 is mixed with the background music to be played, and the mixing operation can pass any sound.
  • Video editing software to implement, for example, the commercially available Adobe Premiere.Pro CS4 video editing software.
  • the content that has been mixed is played through the live broadcast. Since the audio file corresponding to the information to be distributed is mixed in a frequency band that does not affect the viewer's audiovisual experience, the audience is still listening to the background music without being disturbed.
  • FIG. 2 shows a schematic block diagram of an information distribution apparatus according to the present invention.
  • the information distribution apparatus 2 includes a database 201, an encoding module 202, a conversion module 203, a mixing module 204, and a broadcasting module 205.
  • the database 201 stores the information to be distributed and its corresponding unique tag.
  • the stored information has a unique index in the database so that the corresponding information can be found according to the index.
  • the index can be used as a mark of the information to be distributed without individually assigning a mark to each piece of information to be distributed.
  • Encoding module 202 encodes the tag corresponding to the information to be distributed, for example, the tag as a 2-byte unsigned integer, an 8-byte unsigned integer, or a 16-byte unsigned integer.
  • the conversion module 203 converts the encoded indicia into an audio file.
  • the conversion module 203 may specifically include:
  • bitstream forming module that converts a 2-byte unsigned integer or an 8-byte unsigned integer or a 16-byte unsigned integer into a bitstream in order from a least significant bit (LSB) to a most significant bit (MSB);
  • the spread spectrum module uses a 7th order m sequence as a spreading sequence, and performs direct sequence spread spectrum baseband modulation on the bit stream, and the chip rate is 1K chips/second;
  • the modulation module performs a finite impulse response (FIR) low-pass filtering of the obtained direct sequence spread spectrum baseband modulated signal with a bandwidth (-6 dB) of 1.5 kHz, and modulates it to the center frequency using I/Q quadrature modulation.
  • Audio signal at a frequency (eg, 19 kHz);
  • the obtained audio signal is sampled and quantized to obtain a digital signal, the sampling rate is 48 kHz, and the quantization rate is 16 bits;
  • Format the module to write digital signals into audio files for example, audio files written in WAV format.
  • the desired frequency refers to a frequency that does not affect the viewer's audiovisual experience, or a frequency at which the viewer cannot perceive the sound, for example, a frequency between 17-20 kHz.
  • the mixing module 204 mixes the audio file obtained by the conversion module 203 with the sound to be broadcast.
  • the mixing module 204 can also mix the audio files in a certain ratio and mix the content to be broadcast.
  • the mixing module 204 can be any commercially available audio and video editing software.
  • the broadcast module 205 plays the content after the mixing by, for example, a speaker.
  • Fig. 3 is a flow chart showing a method of receiving information distributed based on voice coding. As shown in FIG. 3, the method includes the following steps:
  • the audience sitting at the scene may wish to immediately see a detailed description of the player who just scored.
  • the live viewer can use the portable terminal, including but not limited to, a mobile phone, a personal digital assistant, a tablet computer, etc., to receive and record the content being broadcast for a period of time, that is, to receive and record a sound signal.
  • the desired frequency refers to a frequency that does not affect the audiovisual experience, for example, a frequency in the frequency band of 17 kHz to 20 kHz.
  • the mark of the distributed information is encoded into a high-frequency audio file, and the sound is mixed in the content of the broadcast, so that when receiving, by detecting the signal of the high frequency band, it is possible to know whether or not there is a Information distributed.
  • the mark 1 is obtained.
  • the link of the player introduction corresponding to the mark can be found in the background database.
  • the user can further click on the link to view a detailed description of the player by accessing the Internet.
  • FIG. Fig. 4 shows a schematic block diagram of an information receiving apparatus according to the present invention.
  • the information receiving device described herein may be a client program installed on a portable user terminal including, but not limited to, a mobile phone, a tablet, a personal digital assistant.
  • the information receiving apparatus includes a receiving unit 401, a detecting unit 402, and a decoding list. Element 403 and presentation unit 404.
  • the receiving unit 401 receives and records the broadcasted content, that is, a piece of sound.
  • the audience can open the client program that has been downloaded and installed on the mobile terminal, and then receives Unit 401 receives and records a portion of the sound being broadcast by means of the microphone of the mobile terminal.
  • the audio file associated with the distributed information has been mixed in the background music of the broadcast, and the live viewer can receive the related content through the receiving unit 401.
  • the detecting unit 402 can detect the sound signal received and recorded by the receiving unit 401, and detect an audio signal in which the center frequency is a desired frequency, that is, detect whether there is a code that is mixed into the broadcast.
  • the decoding unit 403 decodes the detected signal into a flag. In this embodiment, it will be decoded into the index number 1 of the database.
  • the analysis, detection and decoding of the received sound signal is a complex signal processing process. Since the sound propagation may experience multipath interference, attenuation, etc., the detection unit and the decoding unit need to perform corresponding processing to achieve The received signal is converted back to a marker.
  • the presentation unit 404 searches the database for the information corresponding to the mark according to the mark restored by the decoding unit 403.
  • the mark corresponds to the webpage link introduced by the player, and the presentation unit 404 displays the found link on the mobile terminal. On the display, the viewer can access the Internet and access the webpage by clicking on the link to query the player's details.
  • the viewer at the scene can receive and read the distributed information when interested, the information is highly efficient, and the information is equivalent to the frequency band in which the encoded sound is not affected by the audiovisual experience.
  • the influence of the audience is small, and it is cheaper through broadcast and air.

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  • Engineering & Computer Science (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

一种信息分发方法和装置以及信息接收方法和装置。该信息分发方法包括:给待分发信息分配唯一标记(S101);对标记进行编码(S102);将编码后的标记转换成音频文件(S103);将所述音频文件与将要广播的内容进行混音(S104);以及广播经混音的内容(S105)。根据该技术方案,可以快速、即时、有效地分发信息,现场的观众通过客户端接收广播中的声音片段,解码后实时访问所分发的信息。

Description

信息分发方法和装置以及信息接收方法和装置 技术领域
本发明总地涉及信息分发和接收技术,具体地说,涉及一种基于声音编码的快速信息分发方法和装置以及信息接收方法和装置。
背景技术
对于大型集会或活动的介绍,例如演唱会、话剧演出现场、运动会、足球比赛等,常常提前制作好节目单或宣传手册,以纸质形式发放到现场用户手中,供其在现场观看时参考。然而,这种方式成本高昂,不环保,且相关信息都是被提前制作好的,无法根据现场情况进行修订或添加,实时性差。
随着互联网技术的发展,出现了新型的信息分发方式——在发售的票面上打印二维码。购票的用户通过扫描二维码来访问为该活动而特定制作的网页,该网页可以提供与活相关的任何详细信息。这种方式虽然相对高效,节约环保,但是仍然无法解决有针对性的快速传递实时信息的问题。例如,这种方式不能在演出节目A时只传递A的详细信息给现场观众,而是将全部链接信息推送到观众面前,由观众从众多信息中自行挑选,因此,用户体验较差,使用率不高,信息分发的效率低。
此外,嵌入二维码的方式也不能解决相关信息的即时分发,例如,足球比赛的现场观众可能恰好错过刚刚发生的进球或者没有看清刚刚进球的球员,希望立即看一下进球瞬间的精彩照片并了解刚刚进球的球员的详细介绍。这种情况也是上述的嵌入二维码的方式解决不了的。
因此,如何在大型活动或集会的现场快速实时有效地分发信息成为一个有待解决的问题。
发明内容
有鉴于此,本发明提供一种基于声音编码的快速分发和接收信息的技 术。利用本发明提供的方案,将待分发的信息编码成声音片段,混音入现场的广播内容中,通过现场广播的内容将信息广播出去,实现了快速即时有效地分发信息,现场的观众通过客户端接收广播中的声音片段,解码后实时访问所分发的信息。
具体地,一方面,本发明提供一种信息分发方法,其包括:
给待分发信息分配唯一标记;
对标记进行编码;
将编码后的标记转换成音频文件;
将所述音频文件与将要广播的内容进行混音;以及
广播经混音的内容。
其中,将所述标记表示成2字节无符号整数、8字节无符号整数或16字节无符号整数。
其中,所述将编码后的标记转换成音频文件的步骤包括:
将编码后的标记转换成比特流;
利用扩频序列,将所述比特流进行直接序列扩频基带调制;
对所获得的直接序列扩频基带调制信号进行低通滤波和正交调制,以获得中心频率是期望频率的音频信号,其中,所述期望频率是不影响视听体验的频率;
对所述音频信号进行采样和量化,以获得数字信号;以及
将所述数字信号写成音频文件。
另一方面,本发明还提供一种信息分发装置,其包括:
数据库,其以一一对应的方式存储标记与待分发信息;
编码模块,用于对所述标记进行编码;
转换模块,用于将经编码的标记转换成音频文件;
混音模块,用于将所述音频文件与将要广播的内容混音;和
广播模块,用于广播经混音的内容。
其中,所述编码模块将所述标记表示成2字节无符号整数、8字节无符号整数或16字节无符号整数。
其中,所述转换模块包括:
比特流形成模块,用于将编码后的标记转换成比特流;
扩频模块,用于利用扩频序列,将所述比特流进行直接序列扩频基带调制;
调制模块,用于对所获得的直接序列扩频基带调制信号进行低通滤波和正交调制,以获得中心频率是期望频率的音频信号,其中,所述期望频率是不影响视听体验的频率;
采样模块,用于对所述音频信号进行采样和量化,以获得数字信号;以及
格式化模块,用于将所述数字信号写成音频文件。
根据本发明的另一方面,一种信息接收方法包括:
接收广播的声音信号;
解码并检测声音信号中的中心频率是期望频率的音频信号,其中,所述期望频率是不影响视听体验的频率;
将所述音频信号还原为标记,所述标记与所分发的信息以一一对应的方式存储于数据库中;以及
根据所述标记,从所述数据库中返回所述标记对应的所分发的信息。
其中,通过麦克风接收并录制广播的声音信号。
另一方面,根据本发明的信息接收装置包括:
接收单元,用于接收并录制广播的声音信号;
检测单元,检测所录制的声音信号中的中心频率是期望频率的音频信号,其中,所述期望频率是不影响视听体验的频率;
解码单元,用于将所述音频文件解码还原为所述标记,其中,所述标记与所分发的信息以一一对应的关系存储于数据库中;以及
呈现单元,用于根据所述标记,从所述数据库中返回所述标记对应的所分发的信息。
其中,所述接收单元是麦克风。
采用以上方案,可以实时快速有效地实现信息的分发和接收。待分发的信息被编码成声音片段,混音在现场广播中不影响视听体验的频段,对观众的影响小,信息通过广播的途径分发,实时、快速、高效、环保、成本低。
附图说明
图1是根据本发明的信息分发过程的示意图。
图2是根据本发明的信息分发装置的示意性框图。
图3是根据本发明的信息接收过程的示意图。
图4是根据本发明的信息接收装置的示意性框图。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚,下面结合附图对本发明的具体实施方式进行详细说明。附图中所示和根据附图描述的本发明的实施方式仅仅是示例性的,并且本发明并不限于这些实施方式。
需要说明的是,为了避免因不必要的细节而模糊了本发明,在附图中仅仅示出了与根据本发明的方案密切相关的结构和/或处理步骤,而省略了与本发明关系不大的其他细节。
本发明的主要目的是实现活动现场的信息快速分发。这里所述的活动现场可以包括但不局限于任何大型集会、演唱会、话剧演出、运动会、比赛等在现场不时有广播需要的活动。
下面,结合附图以在一场足球比赛的现场分发一个进球球员的介绍为例,详细描述本发明的信息分发和接收技术。
可以了解,有关这场比赛双方的出场阵容、球员介绍等相关信息可以在网络上找到。甚至,这场比赛的精彩画面也可能会被快速地传播到网络上。另外,还可知,在足球比赛的现场,有一些预先录制好的广播内容,不时地进行广播,例如背景音乐、比赛现场的注意事项、场地介绍等。
基于以上认识,参见图1所示的流程图,描述根据本发明一个实施例 的信息分发方法。在本发明的这个实施例中,这个过程发生在刚刚进球之后。
如图1所示,信息分发方法包括如下步骤:
S101、给待分发的信息分配唯一的标记;
在这个实施例中,待分发的信息是刚刚进球的球员介绍的网页链接。给这个网页链接分配唯一的标记。为了方便对整场比赛待分发信息的管理,可以按照一定的规则,例如数据库存储数据的格式要求,依次分配标记,或者可以使用数据库存储数据的索引作为标记。
例如,待分发的信息可以如下样式地存储在数据库中:
Figure PCTCN2016070207-appb-000001
那么,对于这条待分发信息而言,可以使用索引号1作为标记。
类似地,当有其它待分发信息时,可以按照数据库存储数据的要求和格式,存储待分发信息,并分配和/或指定标记给待分发信息。
S102、对标记进行编码;
作为示例,可以将该标记编码和/或表示成2字节无符号整数。这种编码方式可表示65536个标记。应该理解,本发明不限于这种编码方式,还可以将标记编码成8字节无符号整数或16字节无符号整数以及任何其它的编码方式,只要可以在后续实现将编码后的标记转换成音频文件即可。
S103、将编码后的标记转换成音频文件;
作为示例,可以采用如下方式将编码后的标记转换成音频文件:
(1)将编码后的标记,例如,2字节无符号整数(或8字节无符号整数或16字节无符号整数),按照从最低有效位(LSB)到最高有效位(MSB)的顺序转换成比特流;
(2)采用7阶m序列作为扩频序列,对比特流进行直接序列扩频基带调制,码片速率为1K码片/秒;
(3)对所获得的直接序列扩频基带调制信号进行带宽(-6dB)为1.5kHz的有限脉冲响应(FIR)低通滤波,并利用I/Q正交调制将其调制到中心频率是期望频率(例如,19kHz)的音频信号;
(4)对所获得的音频信号进行采样和量化以获得数字信号,采样率为48kHz的采样率,量化率为16bit;
(5)将如此获得的数字信号写成音频文件。例如,WAV格式的音频文件。
这里,期望频率是指不影响观众视听体验的频率,或者说是观众无法感知到声音的频率,例如,17-20kHz之间的频率。
S104、将所述音频文件与将要广播的内容进行混音;
在获得所述音频文件后,将其与将要广播的内容进行混音。在刚刚发生进球之后,在现场可能会广播一段激动人心的背景音乐,此时,将在步骤103中获得的音频文件与将要播放的背景音乐进行混音,混音操作可以通过任何一款音视频编辑软件来实现,例如,可商购的Adobe Premiere.Pro CS4视频编辑软件。
需要注意的是,在进行混音操作时,可能还需要对音频文件进行幅度调整,以便在接收端侧能够检测出来。
S105、广播经混音的内容。
经过混音的内容,通过现场的广播播放出来。由于待分发信息对应的音频文件被混音在不影响观众视听体验的频段上,所以对于观众而言,在现场听的仍然是背景音乐,不会受到干扰。
以上信息分发方法可以结合图2所示的信息分发装置使用。图2示出了根据本发明的信息分发装置的示意性框图。
如图2所示,信息分发装置2包括数据库201、编码模块202、转换模块203、混音模块204和广播模块205。
数据库201存储待分发信息及其对应的唯一标记。通常而言,所存储的信息在数据库中都有唯一的索引,以便根据索引可以找到相应的信息, 于是,可以将索引作为待分发信息的标记,而不用给每条待分发信息单独分配标记。
编码模块202对将要分发的信息所对应的标记进行编码,例如,将标记表示成2字节无符号整数、8字节无符号整数或16字节无符号整数。
转换模块203将经编码的标记转换成音频文件。转换模块203具体可以包括:
比特流形成模块,将2字节无符号整数或8字节无符号整数或16字节无符号整数按照从最低有效位(LSB)到最高有效位(MSB)的顺序转换成比特流;
扩频模块,采用7阶m序列作为扩频序列,对比特流进行直接序列扩频基带调制,码片速率为1K码片/秒;
调制模块,对所获得的直接序列扩频基带调制信号进行带宽(-6dB)为1.5kHz的有限脉冲响应(FIR)低通滤波,并利用I/Q正交调制将其调制到中心频率是期望频率(例如,19kHz)的音频信号;
采用模块,对所获得的音频信号进行采样和量化以获得数字信号,采样率为48kHz的采样率,量化率为16bit;
格式化模块,将数字信号写成音频文件,例如,写成WAV格式的音频文件。
这里,期望频率是指不影响观众视听体验的频率,或者说是观众无法感知到声音的频率,例如,17-20kHz之间的频率。
混音模块204将转换模块203获得的音频文件与将要广播的声音进行混音。混音模块204还可以将音频文件按一定比例进行幅度调整后与将要广播的内容进行混音。混音模块204可以是任何一款可商购的音视频编辑软件。
广播模块205通过例如扬声器播放混音后的内容。
这样,利用上述的基于声音编码的信息分发方法和信息分发装置,以空气作为介质,采用广播的方式,可以在活动现场实现信息的快速、有效、实时地分发,信息分发的效率高,成本低。
下面,结合图3和图4描述在上述示例的活动现场,如何接收按照上述信息分发方式所分发的信息。
图3示出基于声音编码所分发的信息的接收方法流程图。如图3所示,该方法包括如下步骤:
S301、接收广播的声音信号;
在这个实施例中,坐在现场的观众可能希望马上了解一下刚刚进球的球员的详细介绍。于是,现场观众可以使用便携式终端,包括但不限于,移动电话、个人数字助理、平板电脑等,接收并录制一段时间正在广播的内容,即接收并录制一段声音信号。
S302、检测声音信号中存在的中心频率是期望频率的音频信号;
这里,期望频率是指不影响视听体验的频率,例如,17kHz-20kHz频段内的频率。
基于声音编码的信息分发方式,将所分发信息的标记编码成了高频率的音频文件,混音在广播的内容中,于是,在接收时,通过检测高频段的信号,就可以获知是否存在所分发的信息。
S303、将检测到的音频信号解码还原成所述标记;
例如,在本实施例中,会获得标记1。
S304、根据所述标记,在数据库中查找并返回对应于该标记的信息。
在本实施例中,根据标记或者说是索引号,就可以在后台数据库中查找到标记所对应的球员介绍的链接。用户进一步点击链接,可以通过访问互联网而查阅有关该球员的详细介绍。
以上信息接收方法可以结合图4所示的信息接收装置使用。图4示出了根据本发明的信息接收装置的示意性框图。这里所述的信息接收装置可以是安装于便携式用户终端(包括但不限于移动电话、平板电脑、个人数字助理)上的一个客户端程序。
如图4所示,信息接收装置包括接收单元401、检测单元402、解码单 元403和呈现单元404。
接收单元401接收并录制所广播的内容,即,一段声音,在本实施例的情况下,现场观众在看到进球后,可以打开移动终端上已经下载安装好的客户端程序,于是,接收单元401借助移动终端的麦克风接收并录制一段正在广播的声音。正如此前所述,在广播的背景音乐中已经混音了与所分发信息相关的音频文件,这时,现场观众可以通过接收单元401接收到相关内容。
检测单元402可以对接收单元401接收并录制的声音信号进行检测,检测其中的中心频率是期望频率的音频信号,即检测是否存在被混音入广播中的编码。
解码单元403将检测到的信号解码还原成标记。在本实施例中,将解码成数据库的索引号1。
对接收到的声音信号进行分析、检测和解码是个复杂的信号处理过程,由于声音的传播可能会经历多径干扰、衰减等过程,所以检测单元和解码单元需要进行相应相关的处理,才能实现将接收到的信号转换还原成标记。
呈现单元404根据解码单元403还原出的标记在数据库中查找该标记对应的信息,在本实施例中,该标记对应着该球员介绍的网页链接,呈现单元404将找到的链接显示在移动终端的显示屏上,观众通过点击链接,就可以接入互联网,访问网页,从而查询到该球员的详细信息。
这样,利用上述的信息接收装置和方法,在现场的观众可以在感兴趣时接收和阅读所分发的信息,信息有效率高,而且信息相当于被编码混音在不影响视听体验的频段,对观众的影响小,通过广播途径,借助空气传播,成本低廉。
以上所述的具体实施方式是用于帮助理解本发明的目的、技术方案和有益效果,应理解的是,以上所述仅为本发明的具体实施方式而已,并不用于限定本发明的保护范围,凡在本发明的精神和原则之内,所做的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种信息分发方法,其特征在于,该方法包括:
    给待分发信息分配唯一标记;
    对标记进行编码;
    将编码后的标记转换成音频文件;
    将所述音频文件与将要广播的内容进行混音;以及
    广播经混音的内容。
  2. 如权利要求1所述的方法,其特征在于,将所述标记表示成2字节无符号整数、8字节无符号整数或16字节无符号整数。
  3. 如权利要求2所述的方法,其特征在于,所述将编码后的标记转换成音频文件的步骤包括:
    将编码后的标记转换成比特流;
    利用扩频序列,将所述比特流进行直接序列扩频基带调制;
    对所获得的直接序列扩频基带调制信号进行低通滤波和正交调制,以获得中心频率是期望频率的音频信号,其中,所述期望频率是不影响视听体验的频率;
    对所述音频信号进行采样和量化,以获得数字信号;以及
    将所述数字信号写成音频文件。
  4. 一种信息分发装置,其特征在于,该装置包括:
    数据库,其以一一对应的方式存储标记与待分发信息;
    编码模块,用于对所述标记进行编码;
    转换模块,用于将经编码的标记转换成音频文件;
    混音模块,用于将所述音频文件与将要广播的内容混音;和
    广播模块,用于广播经混音的内容。
  5. 如权利要求4所述的装置,其特征在于,所述编码模块将所述标记 表示成2字节无符号整数、8字节无符号整数或16字节无符号整数。
  6. 如权利要求5所述的装置,其特征在于,所述转换模块包括:
    比特流形成模块,用于将编码后的标记转换成比特流;
    扩频模块,用于利用扩频序列,将所述比特流进行直接序列扩频基带调制;
    调制模块,用于对所获得的直接序列扩频基带调制信号进行低通滤波和正交调制,以获得中心频率是期望频率的音频信号,其中,所述期望频率是不影响视听体验的频率;
    采样模块,用于对所述音频信号进行采样和量化,以获得数字信号;以及
    格式化模块,用于将所述数字信号写成音频文件。
  7. 一种信息接收方法,其特征在于,该方法包括:
    接收广播的声音信号;
    检测声音信号中存在的中心频率是期望频率的音频信号,其中,所述期望频率是不影响视听体验的频率;
    将所述音频信号解码还原为标记,所述标记与所分发的信息以一一对应的方式存储于数据库中;以及
    根据所述标记,从所述数据库中返回所述标记对应的所分发的信息。
  8. 如权利要求7所述的方法,其特征在于,通过麦克风接收所广播的声音信号。
  9. 一种信息接收装置,其特征在于,所述装置包括:
    接收单元,用于接收并录制广播的声音信号;
    检测单元,检测所录制的声音信号中的中心频率是期望频率的音频信号,其中,所述期望频率是不影响视听体验的频率;
    解码单元,用于将所述音频文件解码还原为所述标记,其中,所述标记与所分发的信息以一一对应的关系存储于数据库中;以及
    呈现单元,用于根据所述标记,从所述数据库中返回所述标记对应的所分发的信息。
  10. 如权利要求9所述的装置,其特征在于,所述接收单元是麦克风。
PCT/CN2016/070207 2016-01-05 2016-01-05 信息分发方法和装置以及信息接收方法和装置 WO2017117733A1 (zh)

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