CN107172527B - Volume adjusting method and device for collaborative playing and collaborative playing device - Google Patents
Volume adjusting method and device for collaborative playing and collaborative playing device Download PDFInfo
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- CN107172527B CN107172527B CN201610129817.8A CN201610129817A CN107172527B CN 107172527 B CN107172527 B CN 107172527B CN 201610129817 A CN201610129817 A CN 201610129817A CN 107172527 B CN107172527 B CN 107172527B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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Abstract
The invention discloses a volume adjusting method for collaborative playing, which comprises the following steps: after the portable terminal establishes connection with the cooperative terminal, distributing the frequency of the high-frequency detection segment for each loudspeaker on the cooperative terminal, and correspondingly sending the distribution result to the cooperative terminal where each loudspeaker is located, so that the cooperative terminal controls the loudspeaker to add the high-frequency detection segment with the specified frequency to the audio being played according to the received distribution result when cooperatively playing the audio; collecting audio data during cooperative playing, and calculating the current sound pressure of the high-frequency detection segment of each loudspeaker according to the collected audio data and the frequency of the high-frequency detection segment of each loudspeaker; and adjusting the volume of each loudspeaker according to the preset sound pressure of each loudspeaker and the current sound pressure of the high-frequency detection segment. The invention also discloses a volume adjusting device for cooperative play and a cooperative play device. The invention realizes that the user can obtain the best sound effect of cooperative play in the moving process.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a volume adjustment method and apparatus for cooperative play, and a cooperative play apparatus.
Background
In an audio playing scene, a single terminal cannot provide a stereo playing sound effect for a user due to the limitation of the number of loudspeakers in sound equipment, and even if part of terminals are provided with double loudspeakers, a good stereo playing effect cannot be formed due to the fact that the distance between the two loudspeakers is very limited. However, when the same audio is played cooperatively by a plurality of speakers of a cooperative terminal composed of one or more terminals, if the user moves and is not in the middle of each speaker, the volume of each speaker received by the user becomes uneven, and even when the user is too close to some speakers, the sound emitted by the speakers covers the sound of other speakers, so that the user cannot obtain the optimal stereo sound effect.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention provides a volume adjusting method and device for collaborative playing and a collaborative playing device, and aims to solve the problem that when multiple devices play audio collaboratively, the optimal stereo sound effect cannot be always obtained due to movement of a user.
In order to achieve the above object, the present invention provides a volume adjusting method for collaborative play, where the volume adjusting method for collaborative play includes:
after the portable terminal establishes connection with the cooperative terminal, distributing the frequency of the high-frequency detection segment for each loudspeaker on the cooperative terminal, and correspondingly sending the distribution result to the cooperative terminal where each loudspeaker is located;
collecting audio data during cooperative playing, and calculating the current sound pressure of the high-frequency detection segment of each loudspeaker according to the collected audio data and the frequency of the high-frequency detection segment of each loudspeaker;
and adjusting the volume of each loudspeaker according to the preset sound pressure of each loudspeaker and the current sound pressure of the high-frequency detection segment.
Preferably, after the portable terminal establishes a connection with the cooperative terminal, allocating frequencies of the high-frequency detection segments to the speakers of the cooperative terminal, and correspondingly sending allocation results to the cooperative terminal where the speakers are located includes:
after receiving the connection request sent by the cooperative terminal and establishing connection with the connection request, the portable terminal requests to acquire identification information of each loudspeaker on the cooperative terminal;
and distributing different frequencies of the high-frequency detection segments for each loudspeaker according to the acquired identification information, and sending the frequencies of the high-frequency detection segments distributed to each loudspeaker to a cooperative terminal where the loudspeaker is located.
Preferably, the acquiring the audio data during the cooperative play, and calculating the current sound pressure of the high-frequency detection segment of each speaker according to the acquired audio data and the frequency of the high-frequency detection segment of each speaker includes:
the portable terminal acquires audio data in real time when the speakers of the cooperative terminal cooperatively play through a microphone, and performs analog-to-digital conversion on the audio data to obtain a digital signal;
converting the digital signal from a time domain signal into a frequency domain signal through fast Fourier transform, and then obtaining high-frequency detection segments with different frequencies through filtering according to the frequency of the high-frequency detection segment distributed for each loudspeaker and the frequency domain signal;
and converting the high-frequency detection segments with different frequencies obtained by filtering into time-domain signals from frequency-domain signals through inverse fast Fourier transform, and then correspondingly calculating the current sound pressure of the high-frequency detection segments of each loudspeaker according to the different time-domain signals obtained by conversion.
Preferably, the adjusting the volume of each speaker according to the preset sound pressure of each speaker and the current sound pressure of the high frequency detection segment includes:
the portable terminal acquires preset sound pressure of each loudspeaker;
calculating the difference value between the preset sound pressure of each loudspeaker and the current sound pressure of the corresponding high-frequency detection segment according to the obtained preset sound pressure of each loudspeaker;
and according to the mapping relation between the preset sound pressure difference and the volume adjustment value, adjusting the volume increase corresponding value of the loudspeaker of which the difference is greater than or equal to a first preset threshold value, and adjusting the volume decrease corresponding value of the loudspeaker of which the difference is less than or equal to a second preset threshold value.
In order to achieve the above object, the present invention further provides a volume adjusting method for collaborative play, where the volume adjusting method for collaborative play includes:
the cooperative terminal controls a loudspeaker of the cooperative terminal to add a high-frequency detection segment with specified frequency to the audio being played when the audio is cooperatively played according to the received frequency distribution result of the high-frequency detection segment sent by the portable terminal;
and when receiving an adjusting instruction sent by the portable terminal, increasing or decreasing the volume of the appointed loudspeaker by an appointed value according to the adjusting instruction.
In addition, to achieve the above object, the present invention further provides a volume adjustment device for collaborative playing, including:
the distribution module is used for distributing the frequency of the high-frequency detection fragment for each loudspeaker on the cooperative terminal after the connection with the cooperative terminal is established, and correspondingly sending the distribution result to the cooperative terminal where each loudspeaker is located;
the acquisition module is used for acquiring audio data during cooperative play and calculating the current sound pressure of the high-frequency detection segment of each loudspeaker according to the acquired audio data and the frequency of the high-frequency detection segment of each loudspeaker;
and the adjusting module is used for adjusting the volume of each loudspeaker according to the preset sound pressure of each loudspeaker and the current sound pressure of the high-frequency detection segment.
Preferably, the allocation module comprises:
a first obtaining unit, configured to, after receiving a connection request sent by the cooperative terminal and establishing a connection with the connection request, request to obtain identification information of each speaker on the cooperative terminal;
and the distribution unit is used for distributing different frequencies of the high-frequency detection segments to the loudspeakers according to the acquired identification information and sending the frequencies of the high-frequency detection segments distributed to the loudspeakers to the cooperative terminal where the loudspeakers are located.
Preferably, the acquisition module comprises:
the acquisition unit is used for acquiring audio data in real time when the speakers of the cooperative terminal cooperatively play through a microphone, and performing analog-to-digital conversion on the audio data to obtain a digital signal;
the filtering unit is used for converting the digital signal from a time domain signal into a frequency domain signal through fast Fourier transform, and then obtaining high-frequency detection segments with different frequencies through filtering according to the frequency of the high-frequency detection segment distributed to each loudspeaker and the frequency domain signal;
and the first calculating unit is used for converting the high-frequency detection segments with different frequencies obtained by filtering into time-domain signals from the frequency-domain signals through inverse fast Fourier transform, and then correspondingly calculating the current sound pressure of the high-frequency detection segments of each loudspeaker according to the different time-domain signals obtained by conversion.
Preferably, the adjusting module comprises:
the second acquisition unit is used for acquiring preset sound pressure of each loudspeaker;
the second calculation unit is used for calculating the difference value between the preset sound pressure of each loudspeaker and the current sound pressure of the corresponding high-frequency detection segment according to the acquired preset sound pressure of each loudspeaker;
and the adjusting unit is used for adjusting the volume increase corresponding value of the loudspeaker of which the difference value is greater than or equal to a first preset threshold value and adjusting the volume decrease corresponding value of the loudspeaker of which the difference value is less than or equal to a second preset threshold value according to the mapping relation between the preset sound pressure difference value and the volume adjusting value.
In order to achieve the above object, the present invention further provides a cooperative play apparatus, including:
the adding module is used for controlling the appointed loudspeaker to add the high-frequency detection segment with the appointed frequency to the audio which is played according to the received distribution result of the frequency of the high-frequency detection segment sent by the portable terminal when the audio is played in a coordinated mode;
and the execution module is used for increasing or decreasing the volume of the appointed loudspeaker by an appointed value according to the adjusting instruction when receiving the adjusting instruction sent by the portable terminal.
According to the volume adjusting method and device for cooperative play and the cooperative play device, the portable terminal calculates the current sound pressure of the high-frequency detection segment of each loudspeaker through the collected audio data during the cooperative play and the frequency of the high-frequency detection segment distributed to each loudspeaker of the cooperative terminal, and adjusts the volume of each loudspeaker according to the preset sound pressure of each loudspeaker and the current sound pressure of the high-frequency detection segment, so that when a user carries the portable terminal to move, the cooperative terminal can adaptively increase or reduce the volume of each loudspeaker under the adjustment of the portable terminal, and the user can obtain the optimal stereo sound effect at any time and any place when moving at an effective distance from the loudspeaker.
Drawings
Fig. 1 is a schematic flow chart of a portable terminal side according to a first embodiment of a volume adjustment method for cooperative play according to the present invention;
FIG. 2 is a schematic diagram of waveforms of the high-frequency detection segment and the audio being played by the cooperative terminal in the time domain and the frequency domain according to the present invention;
FIG. 3 is a detailed flowchart of step S10 in FIG. 1;
FIG. 4 is a detailed flowchart of step S20 in FIG. 1;
FIG. 5 is a detailed flowchart of step S30 in FIG. 1;
FIG. 6 is a functional block diagram of a volume adjustment apparatus for cooperative play according to a first embodiment of the present invention;
FIG. 7 is a functional block diagram of a cooperative play apparatus according to an embodiment of the present invention;
FIG. 8 is a schematic diagram illustrating detailed functional modules of an allocation module in a second embodiment of the apparatus for adjusting volume of cooperative play according to the present invention;
fig. 9 is a schematic diagram of a detailed functional module of an acquisition module in a second embodiment of the volume control device for collaborative playback according to the present invention;
fig. 10 is a schematic diagram illustrating detailed functional modules of an adjusting module in a second embodiment of the volume adjusting apparatus for cooperative play according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The present invention provides a volume adjustment method for collaborative play, as shown in fig. 1, which shows a schematic flow diagram of a portable terminal side in a first embodiment of the volume adjustment method for collaborative play of the present invention, and the volume adjustment method for collaborative play includes:
s10, after the portable terminal establishes connection with the cooperative terminal, distributing the frequency of the high-frequency detection segment for each loudspeaker on the cooperative terminal, and correspondingly sending the distribution result to the cooperative terminal where each loudspeaker is located;
the portable terminal can be wearable equipment such as intelligent glasses, intelligent wrist-watch, intelligent bracelet, intelligent dress, also can be other portable terminal that can be synchronous with the position that the user is located, portable terminal is synchronous with the position that the user is located in real time. The cooperative terminal can be a home theater terminal (including a plurality of speakers with different sound channels), a computer (including left and right sound channel speakers), a plurality of intelligent terminals (one intelligent terminal has at least one speaker), and the like, wherein the intelligent terminal can be a smart phone, a tablet computer, a palm computer, and the like. The portable terminal and the cooperative terminal may be connected through bluetooth, a wireless network, a mobile network, or the like, the portable terminal may actively or passively search for the cooperative terminal under or near the same network to request to establish a connection, the cooperative terminal may actively or passively search for the portable terminal under or near the same network to establish a connection, or a user may designate the portable terminal (or the cooperative terminal) to be connected on the cooperative terminal (or the portable terminal).
After the portable terminal is connected with the cooperative terminal, the portable terminal allocates a high-frequency to each speaker on the cooperative terminal according to the number of speakers included in the cooperative terminal, wherein the frequencies allocated by different speakers are different. And when the audio is played cooperatively, each loudspeaker adds a high-frequency detection segment of a corresponding frequency to the audio being played according to the assigned frequency. The high-frequency detection segment is a high-frequency sound segment which can not be heard by human ears, specifically, the frequency range of the sound which can be heard by the human ears is 20Hz to 20KHz, most of the sound with the frequency of 18KHz and above can not be heard by people, and most of the sound with the frequency of more than 24KHz can not be restored after being sampled by terminals. Fig. 2 shows a schematic waveform diagram of the high frequency detection segment and the audio being played by the cooperative terminal in the time domain and the frequency domain in the present invention.
After allocating different frequencies of the high-frequency detection segments to the speakers of the cooperative terminal, the portable terminal may send an allocation result including the frequencies of the high-frequency detection segments of one or more speakers belonging to the same terminal to the same cooperative terminal where the speakers are located.
Further, the volume adjustment method for collaborative playing further includes:
the cooperative terminal controls a loudspeaker of the cooperative terminal to add a high-frequency detection segment with a specified frequency to the audio being played when the audio is cooperatively played according to the received frequency distribution result of the high-frequency detection segment sent by the portable terminal;
when a plurality of speakers in the cooperative terminal play audio cooperatively, a terminal where the speakers are located (i.e., the cooperative terminal or one of the cooperative terminals) controls the speakers to play the audio cooperatively according to the frequency of the high-frequency detection segment corresponding to each speaker, and at the same time, adds the high-frequency detection segment with the specified frequency to the audio being played, so that after the portable terminal collects audio data when each speaker plays cooperatively, the distance between each speaker and the portable terminal (or a user) is determined, so as to adjust the volume of each speaker, and enable the user to obtain the best stereo sound effect.
S20, collecting audio data during cooperative play, and calculating the current sound pressure of the high-frequency detection segment of each loudspeaker according to the collected audio data and the frequency of the high-frequency detection segment of each loudspeaker;
when the audio is played cooperatively, the portable terminal can acquire audio data of the cooperative terminal when the speakers are played cooperatively in real time or at regular time through the recorder, then filter out high-frequency detection segments corresponding to the speakers from the audio data according to the frequency of the high-frequency detection segments of the speakers, and finally calculate the current sound pressure of the high-frequency detection segments of the speakers according to the filtered high-frequency detection segments corresponding to the speakers.
And S30, adjusting the volume of each loudspeaker according to the preset sound pressure of each loudspeaker and the current sound pressure of the high-frequency detection segment.
The preset sound pressure can be set by a user on the portable terminal according to the expected sound pressure of the user on each loudspeaker, and can also be the average sound pressure of the calculated high-frequency detection segment of each loudspeaker in the current sound pressure. The portable terminal adjusts the volume of the loudspeaker with larger difference between the current sound pressure of the high-frequency detection segment and the preset sound pressure according to the preset sound pressure of each loudspeaker and the current sound pressure of the high-frequency detection segment, and adjusts the volume of the loudspeaker with smaller difference between the current sound pressure of the high-frequency detection segment and the preset sound pressure to be properly reduced, so that the position of each loudspeaker of the cooperative terminal relative to the current position of the portable terminal provides the best stereo sound effect for a user.
Further, the volume adjustment method for collaborative playing further includes:
and when receiving the adjusting instruction sent by the portable terminal, the cooperative terminal increases or decreases the volume of the appointed loudspeaker by an appointed value according to the adjusting instruction.
After determining the volume value to be adjusted and increased or decreased by each loudspeaker, the portable terminal sends an adjusting instruction containing the volume value to the terminal where the corresponding loudspeaker to be adjusted is located, and after receiving the adjusting instruction, the terminal where the loudspeaker is located controls the loudspeaker to increase or decrease the volume of the specified value according to the volume value increased or decreased in the adjusting instruction.
According to the volume adjusting method for cooperative play, the portable terminal calculates the current sound pressure of the high-frequency detection segment of each loudspeaker through the collected audio data during cooperative play and the frequency of the high-frequency detection segment distributed to each loudspeaker of the cooperative terminal, and adjusts the volume of each loudspeaker according to the preset sound pressure of each loudspeaker and the current sound pressure of the high-frequency detection segment, so that when a user carries the portable terminal to move, the cooperative terminal can adaptively increase or reduce the volume of each loudspeaker under the adjustment of the portable terminal, and the user can obtain the optimal stereo sound effect at any time and any place when moving at an effective distance from the loudspeaker.
Further, a second embodiment of the volume adjusting method for collaborative playing according to the present invention is provided based on the first embodiment, and in this embodiment, referring to fig. 3, the step S10 includes:
s11, after receiving the connection request sent by the cooperative terminal and establishing connection with the connection request, the portable terminal requests to acquire the identification information of each loudspeaker on the cooperative terminal;
in this embodiment, the cooperative terminal actively requests the portable terminal to establish a connection, and after receiving the connection request sent by the cooperative terminal, the portable terminal establishes a connection with the cooperative terminal, and then requests to acquire identification information of each speaker on the cooperative terminal. The requesting to obtain the identification information of each speaker on the cooperative terminal specifically includes: after each terminal in the cooperative terminals receives the request, the terminal sends the information of the loudspeaker which can be identified by the terminal to the portable terminal; and after receiving the information of the loudspeakers returned by each terminal in the cooperative terminal, the portable terminal identifies different loudspeakers of different terminals, so that the identification information of each loudspeaker on the cooperative terminal is obtained. The identification information of one loudspeaker is composed of the identification of the terminal where the loudspeaker is located and the identification of the loudspeaker on the terminal.
S12, distributing different high-frequency detection segment frequencies to each loudspeaker according to the acquired identification information, and sending the high-frequency detection segment frequencies distributed to each loudspeaker to the cooperative terminal where the loudspeaker is located.
The portable terminal can determine the number of the loudspeakers contained in the cooperative terminal according to the acquired identification information, and then allocates different frequencies of high-frequency detection segments to the loudspeakers within a specified high-frequency (18KHz to 24KHz) range. And the portable terminal can equally distribute the frequency in the appointed high-frequency range according to the number of the loudspeakers.
Further, referring to fig. 4, the step S20 includes:
s21, the portable terminal acquires audio data in real time through a microphone when the speakers of the cooperative terminal cooperatively play, and performs analog-to-digital conversion on the audio data to obtain digital signals;
in this embodiment, the sound recorder is a microphone on the portable terminal.
S22, converting the digital signal from a time domain signal to a frequency domain signal through fast Fourier transform, and then obtaining high-frequency detection segments with different frequencies through filtering according to the frequency of the high-frequency detection segment allocated to each loudspeaker and the frequency domain signal;
and S23, converting the high-frequency detection segments with different frequencies obtained by filtering into time-domain signals from the frequency-domain signals through inverse fast Fourier transform, and then correspondingly calculating the current sound pressure of the high-frequency detection segments of each loudspeaker according to the different time-domain signals obtained by conversion.
Further, referring to fig. 5, the step S30 includes:
s31, the portable terminal acquires preset sound pressure of each loudspeaker;
the preset sound pressures of the various speakers are set by a user and stored in the portable terminal, and the preset sound pressures of the different speakers may be the same or different.
S32, calculating the difference value between the preset sound pressure of each loudspeaker and the current sound pressure of the corresponding high-frequency detection segment according to the acquired preset sound pressure of each loudspeaker;
the current sound pressure of the corresponding high-frequency detection segment is the current sound pressure of the high-frequency detection segment of the loudspeaker corresponding to the specified preset sound pressure.
And S33, according to the mapping relation between the preset sound pressure difference and the volume adjustment value, adjusting the volume increase corresponding value of the loudspeaker of which the difference is greater than or equal to the first preset threshold, and adjusting the volume decrease corresponding value of the loudspeaker of which the difference is less than or equal to the second preset threshold.
The first preset threshold and the second preset threshold are preset sound pressure difference values, and the values of the preset sound pressure difference values are proper values selected according to a large number of experimental analyses. The first preset threshold is used for judging whether the current sound pressure of the loudspeaker is greatly different from the preset sound pressure of the loudspeaker, if the current sound pressure of the loudspeaker is greatly different from the preset sound pressure of the loudspeaker, the portable terminal (or a user) is far away from the loudspeaker, and at the moment, the volume of the loudspeaker needs to be adjusted to be increased; the second preset threshold is used for judging whether the difference between the current sound pressure of the loudspeaker and the preset sound pressure of the loudspeaker is small, if the difference between the current sound pressure of the loudspeaker and the preset sound pressure of the loudspeaker is small, the portable terminal (or the user) is close to the loudspeaker, and at the moment, the volume of the loudspeaker needs to be adjusted to be reduced. The value of the first preset threshold may be the same as or different from the value of the second preset threshold, and when the values are the same, the volume of the speaker may be adjusted to increase when the current sound pressure of the speaker is greater than the value, and when the value is less than the value, the volume of the speaker may be adjusted to decrease, and when the value is equal to the value, the current volume of the speaker may be kept unchanged. When the volume of the loudspeaker is adjusted, the volume value to be increased or decreased of the loudspeaker to be adjusted can be determined according to the mapping relation between the sound pressure difference value preset on the portable terminal and the volume adjustment value.
The invention provides a volume adjusting method for cooperative play, a portable terminal allocates the frequency of a high-frequency detection segment to each loudspeaker on a cooperative terminal connected with the portable terminal, acquires corresponding audio data in real time when each loudspeaker of the cooperative terminal cooperatively plays audio, filters out the corresponding high-frequency detection segment according to the frequency of the high-frequency detection segment of each loudspeaker, calculates the current sound pressure of each loudspeaker according to the filtered high-frequency detection segments with different frequencies, and further determines whether the volume of each loudspeaker is increased or decreased according to the difference value of the current sound pressure and preset sound pressure of each loudspeaker, thereby dynamically adjusting the volume of each loudspeaker on the cooperative terminal according to the movement of a user (or the portable terminal) in real time so that the user obtains the optimal stereo sound effect within the effective distance range of each loudspeaker, the method is simple and easy to implement.
The invention also provides a volume adjusting device for cooperative play and a cooperative play device. The volume adjusting device for the collaborative playing is arranged on the portable terminal, and the collaborative playing device is arranged on the collaborative terminal. As shown in fig. 6, a schematic diagram of functional modules of a first embodiment of a volume adjustment device for collaborative playing according to the present invention is shown, where the volume adjustment device for collaborative playing includes:
the distribution module 100 is configured to distribute frequencies of the high-frequency detection segments to the speakers on the cooperative terminal after establishing connection with the cooperative terminal, and correspondingly send distribution results to the cooperative terminal where the speakers are located;
the portable terminal can be wearable equipment such as intelligent glasses, intelligent wrist-watch, intelligent bracelet, intelligent dress, also can be other portable terminal that can be synchronous with the position that the user is located, portable terminal is synchronous with the position that the user is located in real time. The cooperative terminal can be a home theater terminal (including a plurality of speakers with different sound channels), a computer (including left and right sound channel speakers), a plurality of intelligent terminals (one intelligent terminal has at least one speaker), and the like, wherein the intelligent terminal can be a smart phone, a tablet computer, a palm computer, and the like. The portable terminal and the cooperative terminal may be connected through bluetooth, a wireless network, a mobile network, or the like, the portable terminal may actively or passively search for the cooperative terminal under or near the same network to request to establish a connection, the cooperative terminal may actively or passively search for the portable terminal under or near the same network to establish a connection, or a user may designate the portable terminal (or the cooperative terminal) to be connected on the cooperative terminal (or the portable terminal).
After the portable terminal and the cooperative terminal are connected, the distribution module 100 of the volume adjusting device for cooperative play in the portable terminal distributes a high-frequency to each speaker on the cooperative terminal according to the number of speakers included in the cooperative terminal, where the frequencies obtained by the distribution of different speakers are different. And when the audio is played cooperatively, each loudspeaker adds a high-frequency detection segment of a corresponding frequency to the audio being played according to the assigned frequency. The high-frequency detection segment is a high-frequency sound segment which can not be heard by human ears, specifically, the frequency range of the sound which can be heard by the human ears is 20Hz to 20KHz, most of the sound with the frequency of 18KHz and above can not be heard by people, and most of the sound with the frequency of more than 24KHz can not be restored after being sampled by terminals. Fig. 2 shows a schematic waveform diagram of the high frequency detection segment and the audio being played by the cooperative terminal in the time domain and the frequency domain in the present invention.
After allocating different frequencies of the high frequency detection segments to the speakers of the cooperative terminal, the allocation module 100 may send an allocation result including the frequencies of the high frequency detection segments of one or more speakers belonging to the same terminal to the same cooperative terminal where the speakers are located.
As shown in fig. 7, a schematic diagram of functional modules of an embodiment of a cooperative play apparatus according to the present invention is shown, where the cooperative play apparatus includes:
an adding module 400, configured to control a designated speaker to add a high-frequency detection segment with a designated frequency to the audio being played when the audio is cooperatively played according to a received allocation result of the frequency of the high-frequency detection segment sent by the portable terminal;
when a plurality of speakers in the cooperative terminal cooperatively play audio, the adding module 400 on the terminal where the speakers are located (i.e., the cooperative terminal or one of the cooperative terminals) controls the speakers to cooperatively play audio according to the frequency of the high-frequency detection segment corresponding to each speaker, and at the same time, adds the high-frequency detection segment with the specified frequency to the audio being played, so that after the portable terminal collects audio data when the speakers cooperatively play, the distance between each speaker and the portable terminal (or the user) is determined, so as to adjust the volume of each speaker, and the user obtains the best stereo sound effect.
The acquisition module 200 is configured to acquire audio data during cooperative play, and calculate current sound pressure of the high-frequency detection segments of the speakers according to the acquired audio data and the frequencies of the high-frequency detection segments of the speakers;
when the audio is cooperatively played, the acquisition module 200 may acquire, in real time or at regular time, audio data of the cooperative terminal when the speakers are cooperatively played, filter out the high-frequency detection segments corresponding to the speakers from the audio data according to the frequencies of the high-frequency detection segments of the speakers, and finally calculate the current sound pressures of the high-frequency detection segments of the speakers according to the filtered high-frequency detection segments corresponding to the speakers.
And the adjusting module 300 is configured to adjust the volume of each speaker according to the preset sound pressure of each speaker and the current sound pressure of the high-frequency detection segment.
The preset sound pressure can be set by a user on the portable terminal according to the expected sound pressure of the user on each loudspeaker, and can also be the average sound pressure of the calculated high-frequency detection segment of each loudspeaker in the current sound pressure. The adjusting module 300 adjusts the volume of the speaker with a larger difference between the current sound pressure and the preset sound pressure of the high frequency detection segment according to the preset sound pressure of each speaker and the current sound pressure of the high frequency detection segment, and adjusts the volume of the speaker with a smaller difference between the current sound pressure and the preset sound pressure of the high frequency detection segment to be properly reduced, so that the speakers of the cooperative terminal are located at the current position relative to the portable terminal, and an optimal stereo sound effect is provided for a user.
Further, the cooperative play apparatus further includes:
the execution module 500 is configured to, when receiving an adjustment instruction sent by the portable terminal, increase or decrease the volume of a specified speaker by a specified value according to the adjustment instruction.
After determining the volume value to be adjusted and increased or decreased by each speaker, the portable terminal sends an adjustment instruction containing the volume value to be increased or decreased to the terminal where the corresponding speaker to be adjusted is located, and after receiving the adjustment instruction, the execution module 500 on the terminal where the speaker is located controls the speaker to increase or decrease the volume of the specified value according to the volume value increased or decreased in the adjustment instruction.
According to the volume adjusting device for collaborative playing provided by the invention, the current sound pressure of the high-frequency detection segment of each loudspeaker is calculated through the collected audio data during collaborative playing and the frequency of the high-frequency detection segment distributed for each loudspeaker of the collaborative terminal provided with the collaborative playing device, and the volume of each loudspeaker is adjusted according to the preset sound pressure of each loudspeaker and the current sound pressure of the high-frequency detection segment, so that when a user moves the portable terminal containing the volume adjusting device for collaborative playing, the collaborative terminal can adaptively increase or decrease the volume of each loudspeaker under the adjustment of the volume adjusting device for collaborative playing, and the user can obtain the optimal stereo sound effect at any time and any place when moving in an effective distance from the loudspeaker.
Further, a second embodiment of the volume adjusting device for cooperative play according to the present invention is provided based on the first embodiment, and in this embodiment, referring to fig. 8, the allocating module 100 includes:
a first obtaining unit 101, configured to, after receiving a connection request sent by the cooperative terminal and establishing a connection with the connection request, request to obtain identification information of each speaker on the cooperative terminal;
in this embodiment, the cooperative terminal actively requests the portable terminal to establish a connection, and the first obtaining unit 101 establishes a connection with the cooperative terminal after receiving the connection request sent by the cooperative terminal, and then requests to obtain identification information of each speaker on the cooperative terminal. The requesting to obtain the identification information of each speaker on the cooperative terminal specifically includes: after each terminal in the cooperative terminals receives the request, the terminal sends the information of the loudspeaker which can be identified by the terminal to the portable terminal; and after receiving the information of the loudspeakers returned by each terminal in the cooperative terminal, the portable terminal identifies different loudspeakers of different terminals, so that the identification information of each loudspeaker on the cooperative terminal is obtained. The identification information of one loudspeaker is composed of the identification of the terminal where the loudspeaker is located and the identification of the loudspeaker on the terminal.
The allocating unit 102 is configured to allocate different frequencies of the high-frequency detection segments to each speaker according to the acquired identification information, and send the frequencies of the high-frequency detection segments allocated to each speaker to the cooperative terminal where the speaker is located.
The allocating unit 102 may determine the number of speakers included in the cooperative terminal according to the acquired identification information, and then allocate different frequencies of high-frequency detection segments to the speakers within a specified high-frequency range (18KHz to 24 KHz). And the portable terminal can equally distribute the frequency in the appointed high-frequency range according to the number of the loudspeakers.
Further, referring to fig. 9, the acquisition module 200 includes:
the acquisition unit 201 is configured to acquire, in real time, audio data when the speakers of the cooperative terminal cooperatively play through a microphone, and perform analog-to-digital conversion on the audio data to obtain a digital signal;
in this embodiment, the sound recorder is a microphone on the portable terminal.
A filtering unit 202, configured to convert the digital signal from a time domain signal to a frequency domain signal through fast fourier transform, and then obtain high frequency detection segments with different frequencies through filtering according to the frequency of the high frequency detection segment allocated to each speaker and the frequency domain signal;
the first calculating unit 203 is configured to convert the filtered high-frequency detection segments with different frequencies from the frequency domain signal to a time domain signal through inverse fast fourier transform, and then correspondingly calculate the current sound pressure of the high-frequency detection segment of each speaker according to the different time domain signals obtained through conversion.
Further, referring to fig. 10, the adjusting module 300 includes:
a second obtaining unit 301, configured to obtain preset sound pressures of the speakers;
the preset sound pressures of the various speakers are set by a user and stored in the portable terminal, and the preset sound pressures of the different speakers may be the same or different.
A second calculating unit 302, configured to calculate, according to the obtained preset sound pressure of each speaker, a difference between the preset sound pressure of each speaker and the current sound pressure of the corresponding high-frequency detection segment;
the current sound pressure of the corresponding high-frequency detection segment is the current sound pressure of the high-frequency detection segment of the loudspeaker corresponding to the specified preset sound pressure.
The adjusting unit 303 is configured to adjust, according to a mapping relationship between a preset sound pressure difference and a volume adjustment value, a volume increase corresponding value of the speaker of which the difference is greater than or equal to a first preset threshold, and adjust a volume decrease corresponding value of the speaker of which the difference is less than or equal to a second preset threshold.
The first preset threshold and the second preset threshold are preset sound pressure difference values, and the values of the preset sound pressure difference values are proper values selected according to a large number of experimental analyses. The first preset threshold is used for determining whether the current sound pressure of the speaker is greatly different from the preset sound pressure of the speaker, and if the current sound pressure of the speaker is greatly different from the preset sound pressure of the speaker, it indicates that the portable terminal (or the user) is far away from the speaker, and at this time, the adjusting unit 303 is required to adjust the volume of the speaker to increase; the second preset threshold is used to determine whether the difference between the current sound pressure of the speaker and the preset sound pressure of the speaker is small, and if the difference between the current sound pressure of the speaker and the preset sound pressure of the speaker is small, it indicates that the portable terminal (or the user) is close to the speaker, and at this time, the adjusting unit 303 is required to adjust the volume of the speaker to decrease. The value of the first preset threshold may be the same as or different from the value of the second preset threshold, and when the values are the same, the adjusting unit 303 may adjust the volume of the speaker to increase when the current sound pressure of the speaker is greater than the value, and when the value is smaller than the value, the adjusting unit 303 may adjust the volume of the speaker to decrease, and when the value is equal to the value, the adjusting unit 303 may keep the current volume of the speaker unchanged. When the adjusting unit 303 adjusts the volume of the speaker, the volume value to be increased or decreased of the speaker to be adjusted may be determined according to a mapping relationship between a sound pressure difference value preset on the portable terminal and a volume adjustment value.
The volume adjusting device for cooperative play provided by the invention allocates the frequency of the high-frequency detection segment to each loudspeaker on the cooperative terminal connected with the portable terminal, collects the corresponding audio data in real time when each loudspeaker of the cooperative terminal cooperatively plays audio, filters out the corresponding high-frequency detection segment according to the frequency of the high-frequency detection segment of each loudspeaker, calculates the current sound pressure of each loudspeaker according to the filtered high-frequency detection segments with different frequencies, and further determines whether to increase or decrease the volume of each loudspeaker according to the difference value between the current sound pressure and the preset sound pressure of each loudspeaker, thereby dynamically adjusting the volume of each loudspeaker on the cooperative terminal according to the movement of a user (or the portable terminal) in real time to ensure that the user obtains the optimal stereo sound effect within the effective distance range of each loudspeaker, the terminal is simple to operate and easy to realize.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. A volume adjustment method for collaborative playing is characterized in that the volume adjustment method for collaborative playing comprises the following steps:
after the portable terminal is connected with the cooperative terminal, distributing the frequency of a high-frequency detection segment for each loudspeaker on the cooperative terminal, and correspondingly sending a distribution result to the cooperative terminal where each loudspeaker is located, so that the cooperative terminal controls the loudspeaker to add the high-frequency detection segment with the specified frequency to the audio being played according to the received distribution result when cooperatively playing the audio, wherein the high-frequency detection segment is a section of high-frequency sound segment with the frequency range of 18KHz to 24 KHz;
acquiring audio data in the cooperative playing process in real time, and calculating the current sound pressure of the high-frequency detection segment of each loudspeaker according to the acquired audio data and the frequency of the high-frequency detection segment of each loudspeaker;
adjusting the volume of each loudspeaker according to the preset sound pressure of each loudspeaker and the current sound pressure of the high-frequency detection segment;
after the portable terminal establishes connection with the cooperative terminal, the portable terminal allocates the frequency of the high-frequency detection segment to each loudspeaker on the cooperative terminal, and correspondingly sends the allocation result to the cooperative terminal where each loudspeaker is located, and the method comprises the following steps:
after receiving the connection request sent by the cooperative terminal and establishing connection with the connection request, the portable terminal requests to acquire identification information of each loudspeaker on the cooperative terminal;
and distributing different frequencies of the high-frequency detection segments for each loudspeaker according to the acquired identification information, and sending the frequencies of the high-frequency detection segments distributed to each loudspeaker to a cooperative terminal where the loudspeaker is located.
2. The method for adjusting volume of cooperative play according to claim 1, wherein the acquiring audio data in real time during cooperative play, and calculating the current sound pressure of the hf detection segment of each speaker according to the acquired audio data and the frequency of the hf detection segment of each speaker comprises:
the portable terminal acquires audio data in real time when the speakers of the cooperative terminal cooperatively play through a microphone, and performs analog-to-digital conversion on the audio data to obtain a digital signal;
converting the digital signal from a time domain signal into a frequency domain signal through fast Fourier transform, and then obtaining high-frequency detection segments with different frequencies through filtering according to the frequency of the high-frequency detection segment distributed for each loudspeaker and the frequency domain signal;
and converting the high-frequency detection segments with different frequencies obtained by filtering into time-domain signals from frequency-domain signals through inverse fast Fourier transform, and then correspondingly calculating the current sound pressure of the high-frequency detection segments of each loudspeaker according to the different time-domain signals obtained by conversion.
3. The method for adjusting volume of cooperative play according to claim 1, wherein the adjusting the volume of each speaker according to the preset sound pressure of each speaker and the current sound pressure of the high frequency detection segment comprises:
the portable terminal acquires preset sound pressure of each loudspeaker;
calculating the difference value between the preset sound pressure of each loudspeaker and the current sound pressure of the corresponding high-frequency detection segment according to the obtained preset sound pressure of each loudspeaker;
adjusting the volume of each loudspeaker according to the mapping relation between the preset sound pressure difference value and the volume adjusting value;
wherein, the adjusting the volume of each loudspeaker according to the mapping relation between the preset sound pressure difference value and the volume adjusting value comprises:
when the first preset threshold value is different from the second preset threshold value, adjusting the volume of the loudspeaker of which the difference value is greater than or equal to the first preset threshold value to increase the corresponding value according to the mapping relation between the preset sound pressure difference value and the volume adjusting value, and adjusting the volume of the loudspeaker of which the difference value is less than or equal to the second preset threshold value to decrease the corresponding value;
when the first preset threshold value and the second preset threshold value are the same, according to the mapping relation between the preset sound pressure difference value and the volume adjusting value, adjusting the volume increase corresponding value of the loudspeaker with the difference value larger than the first preset threshold value, adjusting the volume decrease corresponding value of the loudspeaker with the difference value smaller than the first preset threshold value, and keeping the volume of the loudspeaker with the difference value equal to the first preset threshold value unchanged.
4. A volume adjustment method for collaborative playing is characterized in that the volume adjustment method for collaborative playing comprises the following steps:
the cooperative terminal sends a connection request to the portable terminal and establishes connection with the portable terminal, then sends identification information of each loudspeaker to the portable terminal, and controls the loudspeaker to add a high-frequency detection segment with specified frequency to the audio being played according to the received distribution result of the frequency of the high-frequency detection segment sent by the portable terminal based on the identification information when the audio is cooperatively played, wherein the high-frequency detection segment is a section of high-frequency sound segment with the frequency range of 18KHz to 24 KHz;
and when receiving an adjusting instruction sent by the portable terminal based on the audio data acquired in real time during the cooperative playing and the frequency of the high-frequency detection segment of each loudspeaker, increasing or decreasing the volume of the specified loudspeaker by a specified value according to the adjusting instruction.
5. A volume adjustment device for collaborative playback, the volume adjustment device for collaborative playback comprising:
the distribution module is used for distributing the frequency of the high-frequency detection segment for each loudspeaker on the cooperative terminal after the connection with the cooperative terminal is established, and correspondingly sending the distribution result to the cooperative terminal where each loudspeaker is located, so that the cooperative terminal controls the loudspeaker to add the high-frequency detection segment with the specified frequency to the audio being played according to the received distribution result when the audio is played in a cooperative manner, wherein the high-frequency detection segment is a section of high-frequency sound segment with the frequency range of 18KHz to 24 KHz;
the acquisition module is used for acquiring audio data in the cooperative play in real time and calculating the current sound pressure of the high-frequency detection segment of each loudspeaker according to the acquired audio data and the frequency of the high-frequency detection segment of each loudspeaker;
the adjusting module is used for adjusting the volume of each loudspeaker according to the preset sound pressure of each loudspeaker and the current sound pressure of the high-frequency detection segment;
wherein the allocation module comprises:
a first obtaining unit, configured to, after receiving a connection request sent by the cooperative terminal and establishing a connection with the connection request, request to obtain identification information of each speaker on the cooperative terminal;
and the distribution unit is used for distributing different frequencies of the high-frequency detection segments to the loudspeakers according to the acquired identification information and sending the frequencies of the high-frequency detection segments distributed to the loudspeakers to the cooperative terminal where the loudspeakers are located.
6. The apparatus for adjusting volume of cooperative play according to claim 5, wherein the acquisition module comprises:
the acquisition unit is used for acquiring audio data in real time when the speakers of the cooperative terminal cooperatively play through a microphone, and performing analog-to-digital conversion on the audio data to obtain a digital signal;
the filtering unit is used for converting the digital signal from a time domain signal into a frequency domain signal through fast Fourier transform, and then obtaining high-frequency detection segments with different frequencies through filtering according to the frequency of the high-frequency detection segment distributed to each loudspeaker and the frequency domain signal;
and the first calculating unit is used for converting the high-frequency detection segments with different frequencies obtained by filtering into time-domain signals from the frequency-domain signals through inverse fast Fourier transform, and then correspondingly calculating the current sound pressure of the high-frequency detection segments of each loudspeaker according to the different time-domain signals obtained by conversion.
7. The apparatus for adjusting volume of cooperative play according to claim 5, wherein the adjusting module comprises:
the second acquisition unit is used for acquiring preset sound pressure of each loudspeaker;
the second calculation unit is used for calculating the difference value between the preset sound pressure of each loudspeaker and the current sound pressure of the corresponding high-frequency detection segment according to the acquired preset sound pressure of each loudspeaker;
the adjusting unit is used for adjusting the volume of each loudspeaker according to the mapping relation between the preset sound pressure difference value and the volume adjusting value;
wherein, the adjusting the volume of each loudspeaker according to the mapping relation between the preset sound pressure difference value and the volume adjusting value comprises:
when the first preset threshold value is different from the second preset threshold value, adjusting the volume of the loudspeaker of which the difference value is greater than or equal to the first preset threshold value to increase the corresponding value according to the mapping relation between the preset sound pressure difference value and the volume adjusting value, and adjusting the volume of the loudspeaker of which the difference value is less than or equal to the second preset threshold value to decrease the corresponding value;
when the first preset threshold value and the second preset threshold value are the same, according to the mapping relation between the preset sound pressure difference value and the volume adjusting value, adjusting the volume increase corresponding value of the loudspeaker with the difference value larger than the first preset threshold value, adjusting the volume decrease corresponding value of the loudspeaker with the difference value smaller than the first preset threshold value, and keeping the volume of the loudspeaker with the difference value equal to the first preset threshold value unchanged.
8. A cooperative play apparatus, characterized in that the cooperative play apparatus comprises:
the adding module is used for sending a connection request to the portable terminal and establishing connection with the portable terminal, then sending identification information of each loudspeaker to the portable terminal, and controlling the loudspeaker to add a high-frequency detection segment with specified frequency to the audio being played when the audio is played in a coordinated manner according to a received distribution result of the frequency of the high-frequency detection segment sent by the portable terminal based on the identification information, wherein the high-frequency detection segment is a high-frequency sound segment with the frequency range of 18KHz to 24 KHz;
and the execution module is used for increasing or decreasing the volume of the specified loudspeaker by a specified value according to the adjusting instruction when receiving the adjusting instruction sent by the portable terminal based on the audio data acquired in real time during the cooperative playing and the frequency of the high-frequency detection segment of each loudspeaker.
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| CN201610129817.8A CN107172527B (en) | 2016-03-08 | 2016-03-08 | Volume adjusting method and device for collaborative playing and collaborative playing device |
| PCT/CN2016/080925 WO2016197752A2 (en) | 2016-03-08 | 2016-05-03 | Cooperative playback volume adjustment method and device, and cooperative playback device |
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| CN201610129817.8A CN107172527B (en) | 2016-03-08 | 2016-03-08 | Volume adjusting method and device for collaborative playing and collaborative playing device |
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| CN107566618B (en) * | 2017-08-18 | 2021-01-22 | Oppo广东移动通信有限公司 | Volume adjusting method and device, terminal equipment and storage medium |
| TW202021377A (en) | 2018-11-23 | 2020-06-01 | 廣達電腦股份有限公司 | Environmental detection system and sound control method using the same |
| CN109947386A (en) * | 2019-03-22 | 2019-06-28 | 深圳市智杰芯科技有限公司 | Intelligent-induction formula classroom perseverance system for electrical teaching |
| CN113010139B (en) * | 2021-03-10 | 2023-09-05 | 北京奇艺世纪科技有限公司 | Screen projection method and device and electronic equipment |
| CN113659950B (en) * | 2021-08-13 | 2024-03-22 | 深圳市百匠科技有限公司 | High-fidelity multipurpose sound control method, system, device and storage medium |
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| CN102752687A (en) * | 2012-06-28 | 2012-10-24 | 华为终端有限公司 | Sound effect adjusting method for terminal device and terminal device |
| CN104184426A (en) * | 2014-08-06 | 2014-12-03 | 深圳市同洲电子股份有限公司 | Volume adjusting method and apparatus |
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| WO2016197752A3 (en) | 2017-02-02 |
| CN107172527A (en) | 2017-09-15 |
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