WO2017120914A1 - Method for adjusting volume level on the basis of surrounding environment and audio player - Google Patents
Method for adjusting volume level on the basis of surrounding environment and audio player Download PDFInfo
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- WO2017120914A1 WO2017120914A1 PCT/CN2016/071085 CN2016071085W WO2017120914A1 WO 2017120914 A1 WO2017120914 A1 WO 2017120914A1 CN 2016071085 W CN2016071085 W CN 2016071085W WO 2017120914 A1 WO2017120914 A1 WO 2017120914A1
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- sound intensity
- surrounding environment
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- average value
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
- H03G3/20—Automatic control
Definitions
- the invention belongs to the field of electronic technology, and in particular relates to a method for adjusting the volume according to the surrounding environment and an acoustic system.
- listening to music is divided into two categories, one is to use headphones to listen to music, and the other is to use audio to listen to music.
- Embodiments of the present invention provide A method for adjusting the volume according to the surrounding environment, the purpose is to adjust the volume defect frequently according to the environment of the scene and the track being played when listening to music in a public place, and it is necessary to provide an automatic adjustment according to the surrounding environment.
- Volume method .
- a method of adjusting the volume according to a surrounding environment comprising the steps of:
- the music is played at a volume decibel corresponding to the intensity period according to the peripheral ambient sound intensity interval in which the average value is located.
- the embodiment of the invention also provides an audio, comprising:
- a recording unit configured to record a correspondence between a group of more than one ambient sound intensity interval set by the user and a volume decibel during music playing;
- a computing unit whose input end is connected to the output end of the statistical unit, and is used for calculating an average value of the sound intensity of the surrounding environment in the certain period of time;
- a determining unit wherein the input end is respectively connected to the output end of the recording unit and the output end of the calculating unit, and is used for determining whether the average value of the ambient sound intensity within a certain time period is within the ambient sound intensity interval set by the user;
- An execution unit wherein an input end thereof is respectively connected to an output end of the recording unit and an output end of the determining unit, and is configured to, according to the peripheral ambient sound intensity interval in which the average value is located, corresponding to the intensity period
- the volume decibel plays the music, and the user is prompted to be present in the ambient sound intensity interval according to the average value.
- the The invention calculates the average value of the sound intensity of the surrounding environment in a certain period of time by the preset relationship between the sound intensity interval of the surrounding environment and the volume decibel during the music playing, so that the sound volume of the sound output can be adjusted according to the sound intensity of the current environment. .
- FIG. 1 is a schematic flowchart of a method for adjusting a volume according to a surrounding environment according to an embodiment of the present invention
- FIG. 2 is a schematic structural view of an acoustic system according to an embodiment of the present invention.
- FIG. 1 is a method for adjusting a volume according to a surrounding environment according to an embodiment of the present invention For the convenience of description, only parts related to the embodiment of the present invention are shown.
- step S101 the correspondence between the sound intensity interval of one or more surrounding environments set by the user and the volume decibel during music playback is recorded. .
- step S102 the sound intensity of the surrounding environment is counted for a certain period of time.
- the sound decibel tester can realize statistical work and count the sound decibels of the surrounding environment within a certain period of time. For example, install the sound decibel tester in the hall of the teahouse and count it by the sound decibel tester. Minutes the sound decibels of the restaurant environment.
- step S103 an average value of the ambient sound intensity in the predetermined time is calculated.
- the above statistics are averaged over the sound decibels of the surrounding environment for a certain period of time, and the average sound intensity of the surrounding environment during the period of time is calculated, for example, according to the above record 5
- the sound intensity in the environment of the teahouse is calculated, and the average sound intensity of the restaurant within 5 minutes is calculated.
- step S104 It is determined whether the average value of the ambient sound intensity within a certain period of time is within the ambient sound intensity interval set by the user. If not, proceed to step S105 to remind the user; if yes, proceed to step S106.
- the music is played at a volume decibel corresponding to the intensity period according to the ambient ambient sound intensity interval in which the average value is located.
- the The invention calculates the average value of the sound intensity of the surrounding environment in a certain period of time by the user corresponding preset sound intensity interval of the surrounding environment and the volume decibel of the music playing time, so that the music volume of the sound output can be adjusted according to the sound intensity of the current environment.
- FIG. 2 is a schematic structural diagram of an audio system according to an embodiment of the present invention, where the audio includes:
- Recording unit 21 For recording a correspondence between a group of more than one ambient sound intensity interval set by the user and a volume decibel during music playback;
- the statistical unit 22 is configured to count the sound intensity of the surrounding environment within a certain period of time
- Computing unit 23 its input terminal and the statistical unit 22 The output end is connected to calculate an average value of the sound intensity of the surrounding environment in the certain period of time;
- a determining unit 24 having an input end and an output end of the recording unit 21 and the calculating unit 23 The output terminal is connected to determine whether the average value of the ambient sound intensity within a certain period of time is within the ambient sound intensity interval set by the user.
- An execution unit 25 having an input end and an output end of the recording unit 21 and the determining unit 24 The output end is connected to play music according to the ambient sound intensity interval in which the average value is located, and the sound decibel corresponding to the intensity period, and the sound intensity does not exist in the surrounding environment according to the average value Within the interval, the user is prompted.
- recording unit 21 Recording the correspondence between the sound intensity interval of one or more surrounding environments set by the user and the volume decibel during music playback; the statistical unit 22 statistics the sound intensity of the surrounding environment within a certain time; the calculation unit 23 Calculating an average value of the sound intensity of the surrounding environment in the certain period of time; the determining unit 24 determines whether the average value of the sound intensity of the surrounding environment within a certain time period is within the ambient sound intensity interval set by the user; The music is played according to the peripheral ambient sound intensity interval in which the average value is located, and the music is played in the volume decibel corresponding to the intensity period, and the user is prompted according to the average value not existing in the surrounding ambient sound intensity interval.
- the The invention calculates the average value of the sound intensity of the surrounding environment in a certain period of time by the user corresponding preset sound intensity interval of the surrounding environment and the volume decibel of the music playing time, so that the music volume of the sound output can be adjusted according to the sound intensity of the current environment.
Abstract
A method for adjusting volume level on the basis of the surrounding environment and an audio player: recording one or more sets of correlations set by a user between surrounding environment sound intensity intervals and volume decibels for music playback (S101); compiling statistics on the sound intensities of the surrounding environment during a certain period of time (S102); calculating the average of the sound intensities of the surrounding environment during the certain period of time (S103); determining whether the average of the sound intensities of the surrounding environment during the certain period of time is in a surround environment sound intensity interval set by a user (S104); if not, then alerting the user (S105); and if yes, then playing back a music at the volume decibel corresponding to the intensity period on the basis of the surrounding environment sound intensity interval in which the average falls (S106). By means of the correlations preset by the user between the surrounding environment sound intensity intervals and the volume decibels for music playback, the average of the sound intensities of the surrounding environment during a certain period of time is calculated, thus the volume level outputted by the audio player can be adjusted on the basis of the average sound intensity of the current environment.
Description
本发明属于 电子技术领域，尤其是涉及一种根据周围环境调节音量大小的方法以及音响。 The invention belongs to the field of electronic technology, and in particular relates to a method for adjusting the volume according to the surrounding environment and an acoustic system.
音乐是反映人类现实生活情感的一种 艺术 。音乐让人 赏心悦目 ，并为您带来听觉的享受。 Music is an art that reflects the emotions of human life. The music is pleasing to the eye and gives you a sense of hearing.
在当前社会中听音乐分为两类，一类是使用耳机一个人听音乐，另一类是使用音响听音乐。 In the current society, listening to music is divided into two categories, one is to use headphones to listen to music, and the other is to use audio to listen to music.
比如在喝茶的地方，往往会放点古筝等音乐来衬托气氛。这种音乐的大小很讲究，小了，不能烘托气氛；大了又嫌吵，不方便交流或思考，一个人喝茶时和五个人喝茶时，所需要的音量不同。同时，每一首歌播放出来的音量又不一样，换歌曲时需要经常调整。
For example, in places where tea is used, music such as guzheng is often placed to set off the atmosphere. The size of this kind of music is very particular, it is small, it can't set off the atmosphere; it is too big to be noisy, it is not convenient to communicate or think, when a person drinks tea and five people drink tea, the volume required is different. At the same time, the volume played by each song is different, and it needs to be adjusted frequently when changing songs.
为此，针对 上述在听音乐上出现的问题，需要提供 一种根据周围环境调节音量大小的方法 。 For this reason, in order to solve the above problems in listening to music, it is necessary to provide a method of adjusting the volume according to the surrounding environment.
在本人申请的专利《 根据周围环境调节音量大小的方法以及音响
》中，本人解决了这个问题，但是随之而来新的问题是，用户每次打开音响后需要用户预先设置好
周边环境声音强度区间和音乐播放时音量分贝的对应关系，但是用户设置的周边环境声音强度区间可能没有设置全面，当出现不存在该周边环境声音强度区间时，将无法播放对应音量的音乐。 The patent that I applied for "How to adjust the volume according to the surrounding environment and the sound
In this case, I solved this problem, but the new problem that comes with it is that the user needs to set it in advance after turning on the sound.
The correspondence between the ambient sound intensity interval and the volume decibel during music playback, but the surrounding ambient sound intensity interval set by the user may not be fully set. When there is no ambient sound intensity interval, the corresponding volume music may not be played.
为此，本人在上一个申请的专利的基础上，进一步作出改进。 To this end, I made further improvements on the basis of the last applied patent.
本发明实施例提供了
一种根据周围环境调节音量大小的方法，目的在于针对在公共场所听音乐时，需要根据现场的环境和播放的曲目的不同，经常调节音量大小的缺陷，需要提供一种可以根据周围环境自动调节音量大小的方法
。 Embodiments of the present invention provide
A method for adjusting the volume according to the surrounding environment, the purpose is to adjust the volume defect frequently according to the environment of the scene and the track being played when listening to music in a public place, and it is necessary to provide an automatic adjustment according to the surrounding environment. Volume method
.
本发明是这样实现的： 一种根据周围环境调节音量大小的方法 ，包括以下步骤： The present invention is implemented as follows: A method of adjusting the volume according to a surrounding environment, comprising the steps of:
记录用户设置的一组以上的周边环境声音强度区间和音乐播放时音量分贝的对应关系；
统计一定时间内周边环境的声音强度； 计算所述一定时间内周边环境声音强度的平均值； Recording a correspondence between a set of more than one ambient sound intensity interval set by the user and a volume decibel during music playback;
Counting the sound intensity of the surrounding environment within a certain period of time; calculating the average value of the surrounding ambient sound intensity within a certain period of time;
判断一定时间内周边环境声音强度的平均值是否在用户设置的周边环境声音强度区间内； Determining whether the average value of the ambient sound intensity within a certain period of time is within the ambient sound intensity interval set by the user;
若否，提醒用户； If not, remind the user;
若是，根据所述平均值所处的所述周边环境声音强度区间，以所述强度期间对应的音量分贝播放音乐。 If so, the music is played at a volume decibel corresponding to the intensity period according to the peripheral ambient sound intensity interval in which the average value is located.
本发明实施例还提供了一种 音响 ，包括： The embodiment of the invention also provides an audio, comprising:
记录单元，用于记录用户设置的一组以上的周边环境声音强度区间和音乐播放时音量分贝的对应关系； a recording unit, configured to record a correspondence between a group of more than one ambient sound intensity interval set by the user and a volume decibel during music playing;
统计单元，用于统计一定时间内周边环境的声音强度； A statistical unit for counting the sound intensity of the surrounding environment within a certain period of time;
计算单元，其输入端与所述统计单元的输出端连接，用于计算所述一定时间内周边环境声音强度的平均值；
a computing unit, whose input end is connected to the output end of the statistical unit, and is used for calculating an average value of the sound intensity of the surrounding environment in the certain period of time;
判断单元，其输入端分别与所述记录单元的输出端以及所述计算单元的输出端连接，用于判断一定时间内周边环境声音强度的平均值是否在用户设置的周边环境声音强度区间内；
a determining unit, wherein the input end is respectively connected to the output end of the recording unit and the output end of the calculating unit, and is used for determining whether the average value of the ambient sound intensity within a certain time period is within the ambient sound intensity interval set by the user;
执行单元，其输入端分别与所述记录单元的输出端以及所述判断单元的输出端连接，用于根据所述平均值所处的所述周边环境声音强度区间，以所述强度期间对应的音量分贝播放音乐，以及根据所述平均值不存在于所述周边环境声音强度区间内，提示用户。
An execution unit, wherein an input end thereof is respectively connected to an output end of the recording unit and an output end of the determining unit, and is configured to, according to the peripheral ambient sound intensity interval in which the average value is located, corresponding to the intensity period The volume decibel plays the music, and the user is prompted to be present in the ambient sound intensity interval according to the average value.
该
发明通过用户预设周边环境声音强度区间和音乐播放时音量分贝的对应关系，计算一定时间内周边环境声音强度的平均值，从而能根据当前环境的声音强度，调整音响输出的音乐音量
。 The
The invention calculates the average value of the sound intensity of the surrounding environment in a certain period of time by the preset relationship between the sound intensity interval of the surrounding environment and the volume decibel during the music playing, so that the sound volume of the sound output can be adjusted according to the sound intensity of the current environment.
.
图 1 是本发明实施例提供的 一种根据周围环境调节音量大小的方法 的流程示意图； 1 is a schematic flowchart of a method for adjusting a volume according to a surrounding environment according to an embodiment of the present invention;
图 2 是本发明实施例提供的一种 音响 的结构示意图。 2 is a schematic structural view of an acoustic system according to an embodiment of the present invention.
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
图 1 是发明实施例提供的 一种根据周围环境调节音量大小的方法
的流程示意图，为了便于说明，只示出了与本发明实施例相关的部分。 1 is a method for adjusting a volume according to a surrounding environment according to an embodiment of the present invention
For the convenience of description, only parts related to the embodiment of the present invention are shown.
在步骤 S101 中，记录用户设置的一组以上的周边环境声音强度区间和音乐播放时音量分贝的对应关系
。 In step S101, the correspondence between the sound intensity interval of one or more surrounding environments set by the user and the volume decibel during music playback is recorded.
.
在本实施例中，
可以在音响上预先设置一组以上的周边环境声音强度区间和音乐播放时音量分贝的对应关系，如：设置环境声音为 30 分贝到 40
分贝之间，对应的音乐播放时的音量分贝为 40 分贝到 50 分贝，或是设置环境声音为 41 分贝到 50 分贝之间，对应的音乐播放时的音量分贝为 51 分贝到
60 分贝等。 In this embodiment,
You can pre-set the correspondence between more than one set of ambient sound intensity intervals and the volume decibel during music playback on the sound, such as setting the ambient sound to 30 dB to 40
Between the decibels, the corresponding music playback volume is decibels from 40 decibels to 50 decibels, or the ambient sound is between 41 decibels and 50 decibels, and the corresponding music playback volume is decibels at 51 decibels.
60 decibels, etc.
在步骤 S102 中， 统计一定时间内周边环境的声音强度。 In step S102, the sound intensity of the surrounding environment is counted for a certain period of time.
通过
声音分贝测试仪可以实现统计工作，统计一定时间内周边环境的声音分贝数，如：在茶楼的大厅中安装声音分贝测试仪，通过声音分贝测试仪统计 5
分钟该茶楼环境的声音分贝数。 by
The sound decibel tester can realize statistical work and count the sound decibels of the surrounding environment within a certain period of time. For example, install the sound decibel tester in the hall of the teahouse and count it by the sound decibel tester.
Minutes the sound decibels of the restaurant environment.
在步骤 S103 中， 计算所述一定时间内周边环境声音强度的平均值。 In step S103, an average value of the ambient sound intensity in the predetermined time is calculated.
将上述统计一定时间内周边环境的声音分贝数进行求平均值，算出该环境在这段时间内周边环境的平均声音强度，如：根据上述记录 5
分钟茶楼的环境内的声音强度，算出该茶楼在这 5 分钟内的平均声音强度。
The above statistics are averaged over the sound decibels of the surrounding environment for a certain period of time, and the average sound intensity of the surrounding environment during the period of time is calculated, for example, according to the above record 5
The sound intensity in the environment of the teahouse is calculated, and the average sound intensity of the restaurant within 5 minutes is calculated.
在步骤 S104 中，
判断一定时间内周边环境声音强度的平均值是否在用户设置的周边环境声音强度区间内。若否 ，则进入步骤 S105 ，提醒用户；若是，则进入步骤 S106 ，
根据所述平均值所处的所述周边环境声音强度区间，以所述强度期间对应的音量分贝播放音乐。 In step S104,
It is determined whether the average value of the ambient sound intensity within a certain period of time is within the ambient sound intensity interval set by the user. If not, proceed to step S105 to remind the user; if yes, proceed to step S106.
The music is played at a volume decibel corresponding to the intensity period according to the ambient ambient sound intensity interval in which the average value is located.
该步骤中，需要注意的是：用户使用过程中可能出现设置的周边环境声音强度区间有遗漏，所以加入判断，提醒用户。
In this step, it should be noted that the sound intensity interval of the surrounding environment that may be set during the user's use is missing, so the judgment is added to remind the user.
该
发明通过用户预设周边环境声音强度区间和音乐播放时音量分贝的对应关系，计算一定时间内周边环境声音强度的平均值，从而能根据当前环境的声音强度，调整音响输出的音乐音量。 The
The invention calculates the average value of the sound intensity of the surrounding environment in a certain period of time by the user corresponding preset sound intensity interval of the surrounding environment and the volume decibel of the music playing time, so that the music volume of the sound output can be adjusted according to the sound intensity of the current environment.
图 2 是本发明实施例提供的一种 音响 的结构示意图，该 音响 包括 ： 2 is a schematic structural diagram of an audio system according to an embodiment of the present invention, where the audio includes:
记录单元 21
，用于记录用户设置的一组以上的周边环境声音强度区间和音乐播放时音量分贝的对应关系； Recording unit 21
For recording a correspondence between a group of more than one ambient sound intensity interval set by the user and a volume decibel during music playback;
统计单元 22 ，用于统计一定时间内周边环境的声音强度； The statistical unit 22 is configured to count the sound intensity of the surrounding environment within a certain period of time;
计算单元 23 ，其输入端与所述统计单元 22
的输出端连接，用于计算所述一定时间内周边环境声音强度的平均值； Computing unit 23, its input terminal and the statistical unit 22
The output end is connected to calculate an average value of the sound intensity of the surrounding environment in the certain period of time;
判断单元 24 ，其输入端分别与所述记录单元 21 的输出端以及所述计算单元 23
的输出端连接，用于判断一定时间内周边环境声音强度的平均值是否在用户设置的周边环境声音强度区间内。 a determining unit 24 having an input end and an output end of the recording unit 21 and the calculating unit 23
The output terminal is connected to determine whether the average value of the ambient sound intensity within a certain period of time is within the ambient sound intensity interval set by the user.
执行单元 25 ，其输入端分别与所述记录单元 21 的输出端以及所述判断单元 24
的输出端连接，用于根据所述平均值所处的所述周边环境声音强度区间，以所述强度期间对应的音量分贝播放音乐，以及根据所述平均值不存在于所述周边环境声音强度区间内，提示用户。 An execution unit 25 having an input end and an output end of the recording unit 21 and the determining unit 24
The output end is connected to play music according to the ambient sound intensity interval in which the average value is located, and the sound decibel corresponding to the intensity period, and the sound intensity does not exist in the surrounding environment according to the average value Within the interval, the user is prompted.
其工作原理是：记录单元 21
记录用户设置的一组以上的周边环境声音强度区间和音乐播放时音量分贝的对应关系 ； 统计单元 22 统计一定时间内周边环境的声音强度；计算单元 23
计算所述一定时间内周边环境声音强度的平均值；判断单元 24 判断一定时间内周边环境声音强度的平均值是否在用户设置的周边环境声音强度区间内；执行单元 25
根据所述平均值所处的所述周边环境声音强度区间，以所述强度期间对应的音量分贝播放音乐，以及根据所述平均值不存在于所述周边环境声音强度区间内，提示用户。 Its working principle is: recording unit 21
Recording the correspondence between the sound intensity interval of one or more surrounding environments set by the user and the volume decibel during music playback; the statistical unit 22 statistics the sound intensity of the surrounding environment within a certain time; the calculation unit 23
Calculating an average value of the sound intensity of the surrounding environment in the certain period of time; the determining unit 24 determines whether the average value of the sound intensity of the surrounding environment within a certain time period is within the ambient sound intensity interval set by the user;
The music is played according to the peripheral ambient sound intensity interval in which the average value is located, and the music is played in the volume decibel corresponding to the intensity period, and the user is prompted according to the average value not existing in the surrounding ambient sound intensity interval.
该
发明通过用户预设周边环境声音强度区间和音乐播放时音量分贝的对应关系，计算一定时间内周边环境声音强度的平均值，从而能根据当前环境的声音强度，调整音响输出的音乐音量。 The
The invention calculates the average value of the sound intensity of the surrounding environment in a certain period of time by the user corresponding preset sound intensity interval of the surrounding environment and the volume decibel of the music playing time, so that the music volume of the sound output can be adjusted according to the sound intensity of the current environment.
以上仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。
The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalents, and improvements made within the spirit and scope of the present invention should be included in the scope of the present invention. Inside.
Claims (2)
- 一种根据周围环境调节音量大小的方法 ， 其特征在于，所述 方法 包括如下步骤： A method of adjusting a volume according to a surrounding environment, characterized in that the method comprises the following steps:记录用户设置的一组以上的周边环境声音强度区间和音乐播放时音量分贝的对应关系； 统计一定时间内周边环境的声音强度； 计算所述一定时间内周边环境声音强度的平均值；Recording the correspondence between the sound intensity interval of one or more surrounding environments set by the user and the volume decibel during music playback; and counting the sound intensity of the surrounding environment within a certain period of time; Calculating an average value of sound intensity of the surrounding environment in the certain period of time;判断一定时间内周边环境声音强度的平均值是否在用户设置的周边环境声音强度区间内；Determining whether the average value of the ambient sound intensity within a certain period of time is within the ambient sound intensity interval set by the user;若否，提醒用户；If not, remind the user;若是，根据所述平均值所处的所述周边环境声音强度区间，以所述强度期间对应的音量分贝播放音乐。If so, the music is played at a volume decibel corresponding to the intensity period according to the peripheral ambient sound intensity interval in which the average value is located.
- 一种 音响 ，其特征在于，所述 音响 包括：An audio system characterized in that the sound comprises:记录单元，用于记录用户设置的一组以上的周边环境声音强度区间和音乐播放时音量分贝的对应关系；a recording unit, configured to record a correspondence between a group of more than one ambient sound intensity interval set by the user and a volume decibel during music playing;统计单元，用于统计一定时间内周边环境的声音强度；A statistical unit for counting the sound intensity of the surrounding environment within a certain period of time;计算单元，其输入端与所述统计单元的输出端连接，用于计算所述一定时间内周边环境声音强度的平均值；a computing unit, whose input end is connected to the output end of the statistical unit, and is used for calculating an average value of the sound intensity of the surrounding environment in the certain period of time;判断单元，其输入端分别与所述记录单元的输出端以及所述计算单元的输出端连接，用于判断一定时间内周边环境声音强度的平均值是否在用户设置的周边环境声音强度区间内；a determining unit, wherein the input end is respectively connected to the output end of the recording unit and the output end of the calculating unit, and is used for determining whether the average value of the ambient sound intensity within a certain time period is within the ambient sound intensity interval set by the user;执行单元，其输入端分别与所述记录单元的输出端以及所述计算单元的输出端连接，用于根据所述平均值所处的所述周边环境声音强度区间，以所述强度期间对应的音量分贝播放音乐，以及根据所述平均值不存在于所述周边环境声音强度区间内，提示用户。An execution unit, wherein an input end thereof is respectively connected to an output end of the recording unit and an output end of the calculation unit, and is configured to: according to the peripheral ambient sound intensity interval in which the average value is located, corresponding to the intensity period The volume decibel plays the music, and the user is prompted to be present in the ambient sound intensity interval according to the average value.
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