CN108551610A - A kind of intelligent sound box and its audio effect generating method - Google Patents
A kind of intelligent sound box and its audio effect generating method Download PDFInfo
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- CN108551610A CN108551610A CN201810448026.0A CN201810448026A CN108551610A CN 108551610 A CN108551610 A CN 108551610A CN 201810448026 A CN201810448026 A CN 201810448026A CN 108551610 A CN108551610 A CN 108551610A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
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- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
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Abstract
The present invention provides a kind of intelligent sound box and its audio effect generating methods to select the part on the left of user to send L channel sound wave respectively in multiple sound-producing devices that intelligent sound box barrel is distributed, and right channel sound wave is sent close to the part of user right；Left and right acoustic channels sound wave after the reflection of user's left and right sides barrier, is correspondingly formed L channel mixing sound and right channel mixing sound respectively；L channel mixing sound is concentrated with directionality with right channel mixing sound and is sent to user, and stereo sound effect is formed at user.It is advantageous in that：According to practical service environment and user location more preferably audio experience can be provided to user.
Description
Technical field
The present invention relates to technical field of intelligent equipment more particularly to a kind of intelligent sound boxes and its audio effect generating method.
Background technology
Intelligent sound box is increasingly appearing in as a kind of smart home device in people's daily life, is given birth to people
Work offers convenience.Existing intelligent sound box is mainly used for music, intelligent domestic system control, life question and answer, service for life
Deng.Google Home and Amazon Echo are the intelligent sound boxes of two kinds of maturations by user admission on the market.
But there are still rooms for improvement for these speakers on the market.Such as the emphasis of these intelligent sound boxes is interactive voice, is not had
More considerations are done to audio, it is to be hoisted that this causes user's auditory effect to have.
Invention content
The goal of the invention of the present invention is to provide a kind of intelligent sound box and its audio effect generating method, around intelligent sound box barrel
In multiple sound-producing devices of distribution, the part on the left of user is selected to send L channel sound wave respectively, close to user right
Part sends right channel sound wave；After the reflection of user's left and right sides barrier, it is mixed to be correspondingly formed L channel respectively for left and right acoustic channels sound wave
Sound and right channel mixing sound；L channel mixing sound is concentrated with directionality with right channel mixing sound and is sent to user, is formed at user
Stereo sound effect.It is advantageous in that：According to practical service environment and user location more preferably audio experience can be provided to user.
To achieve the above object, the present invention provides a kind of audio effect generating method of intelligent sound box, including：
The barrier of the user of intelligent sound box and use environment are positioned respectively；
In several sound-producing devices of intelligent sound box barrel distribution, it is located at the sound-producing device on the left of user present position and sends out
L channel sound wave is sent, is located at the sound-producing device on the right side of user present position and sends right channel sound wave；
L channel sound wave reflects to form L channel mixing sound through the barrier on the left of user, and right channel sound wave is through user right
Barrier reflects to form right channel mixing sound, and the L channel mixing sound forms stereo sound effect with right channel mixing sound and is sent to user.
Optionally, the part being located in several sound-producing devices on the left of user present position sends L channel sound wave；And/or
Part in several sound-producing devices on the right side of user present position sends right channel sound wave.
Optionally, if audio file is mono audio file, the audio file first decomposes software through sound channel and is divided into a left side
Channel audio file and right audio channel file, left channel audio file correspond to L channel sound wave, right audio channel file pair
It should be in right channel sound wave.
Optionally, include to the method for positioning user of intelligent sound box：
User sends instruction sound wave towards intelligent sound box；
The information of acoustic wave received according to several microphones being distributed around intelligent sound box barrel judges the orientation of user.
Optionally, the information of acoustic wave received includes the time of reception；Orientation residing for user is close to being initially received
The microphone of sound wave, far from the microphone for finally receiving sound wave.
Optionally, the information of acoustic wave received includes the volume of sound wave；Orientation residing for user is close to reception
To the maximum microphone of sound wave volume, far from the microphone for receiving sound wave volume minimum.
Optionally, the barrier localization method of the use environment of the intelligent sound box includes：
Several sound-producing devices around the distribution of intelligent sound box barrel send predetermined sound wave, the predetermined sound wave with predetermined direction
Encounter barrier and reflects to form reflection sound wave；
Several microphones around the distribution of intelligent sound box barrel receive the reflection sound wave；
According to barrier described in the Information locating of the information of predetermined sound wave and the reflection sound wave received.
Optionally, each sound-producing device in several sound-producing devices obtain one by one in a predetermined direction with corresponding barrier it
Between distance, obtaining step includes：
One sound-producing device sends predetermined sound wave with predetermined direction；
Several microphones receive reflection sound wave；
According to sending predetermined sound wave and being initially received the time difference of reflection sound wave, sound-producing device is obtained in a predetermined direction
The distance between barrier.
Optionally, each sound-producing device in several sound-producing devices simultaneously obtain in a predetermined direction with corresponding barrier it
Between distance, obtaining step includes：
Several sound-producing devices send the predetermined sound wave of corresponding frequencies with corresponding predetermined direction simultaneously, and each sound-producing device is sent
Predetermined sound wave frequency it is different；
Several microphones receive reflection sound wave；
Predetermined sound wave and the time difference for being initially received reflection sound wave are sent according to corresponding frequencies, obtains each sound-producing device
The distance between in a predetermined direction with barrier.
The present invention also provides a kind of intelligent sound boxes, and several sound-producing devices are distributed with around the barrel of the intelligent sound box, if
In dry sound-producing device, it is located at the sound-producing device on the left of user present position and sends L channel sound wave, L channel sound wave is through a user left side
The barrier of side reflects to form L channel mixing sound；Sound-producing device on the right side of user present position sends right channel sound wave, right
Barrier of the sound channel sound wave through user right reflects to form right channel mixing sound, and the L channel mixing sound is used for shape with right channel mixing sound
It is sent to user at stereo sound effect.
Optionally, several microphones are also distributed with around the barrel of the intelligent sound box, several microphones are used for basis and connect
The information of acoustic wave of the user instruction received judges the orientation of user.
Optionally, several sound-producing devices are used to send predetermined sound wave with predetermined direction；Several microphones are for receiving
The predetermined sound wave encounters the reflection sound wave that barrier reflects to form, the information of the predetermined sound wave and the reflected sound received
The information of wave is for positioning the barrier.
Optionally, each microphone is located at sustained height, and each sound-producing device is located at sustained height, multiple microphones with it is more
A sound-producing device all surrounds intelligent sound box barrel equal distribution；One sound-producing device and a microphone are formed in one group, every group
Microphone and sound-producing device be distributed up and down.
Optionally, the sound-producing device that a sound-producing device and a microphone are formed in one group, every group is located at microphone
Same place.
Compared with prior art, the beneficial effects of the present invention are：
1) in intelligent sound box of the invention and its audio effect generating method side, in the multiple hairs being distributed around intelligent sound box barrel
In acoustic device, the part on the left of user is selected to send L channel sound wave respectively, right sound is sent close to the part of user right
Road sound wave；After the reflection of user's left and right sides barrier, it is mixed with right channel to be correspondingly formed L channel mixing sound respectively for left and right acoustic channels sound wave
Sound；L channel mixing sound is concentrated with directionality with right channel mixing sound and is sent to user, and stereo sound effect is formed at user.Benefit
It is：According to practical service environment and user location more preferably audio experience can be provided to user.
2) in alternative, sound-producing device audio file to be played is a) two-channel file, then a channel audio text
Part is sent to a part of sound-producing device, and correspondence plays out L channel sound wave；Another channel audio file is sent to another part
Sound-producing device, correspondence play out right channel sound wave.Or sound-producing device audio file to be played is b) mono audio file, then
Mono audio file first decomposes software through sound channel and is divided into left channel audio file and right audio channel file, left channel audio text
Part correspondence plays to form sound channel sound wave through part sound-producing device, and right audio channel file corresponds to corresponding through another part sound-producing device
Broadcasting forms right channel sound wave.
3) in alternative, the method for positioning user to intelligent sound box includes：User sends instruction sound wave towards intelligent sound box；
The information of acoustic wave received according to several microphones being distributed around intelligent sound box barrel judges the orientation of user.A) it receives
Information of acoustic wave includes the time of reception.Specifically, the orientation residing for user is close to the microphone for being initially received sound wave, far from last
Receive the microphone of sound wave.It is poor by acoustic receiver sending time, it can be determined that the orientation residing for user.Or b) receive
Information of acoustic wave includes the volume of sound wave.Specifically, the orientation residing for user is close receives the maximum Mike of sound wave volume
Wind, far from the microphone for receiving sound wave volume minimum.By sound wave volume attenuation degree, the side residing for user can also be judged
Position.
4) in alternative, the barrier localization method to the use environment of intelligent sound box includes：Around intelligent sound box cylinder
Several sound-producing devices of wall distribution send predetermined sound wave with predetermined direction, and the predetermined sound wave encounters barrier and reflects to form reflection
Sound wave；Several microphones around the distribution of intelligent sound box barrel receive the reflection sound wave；According to the information of predetermined sound wave and
Barrier described in the Information locating of the reflection sound wave received.In other words, according to the predetermined sound wave of sound-producing device transmission and wheat
Both reflection sound waves that gram wind receives information of acoustic wave difference, the barrier in positioning intelligent speaker use environment.
Specifically, for transmitting and receiving mode：Each sound-producing device in several sound-producing devices can one by one be obtained with a)
The distance between with corresponding barrier on predetermined direction；Or b) at the same obtain in a predetermined direction between corresponding barrier away from
From.For a) scheme, a sound-producing device sends predetermined sound wave, and several microphones receive reflection sound wave.For b) scheme, if
Dry sound-producing device sends predetermined sound wave simultaneously, and several microphones receive reflection sound wave and a) difference lies in each sounding for scheme
The predetermined frequency of sound wave that device is sent is different, and the reflection sound wave that each microphone receives includes each frequency.
Barrier is specifically positioned：Information of acoustic wave difference may include transmitting and receiving the time difference.For 4) alternative
In a) scheme, be initially received the microphone of reflection sound wave and send the sound-producing device distance of predetermined sound wave recently, it is rough to count
In the case of calculation, it is believed that the two can be sent according to the half of the velocity of sound and the product for transmitting and receiving the time difference at this time at one
The sound-producing device of predetermined sound wave distance away from front obstacle on predetermined Acoustic Wave Propagation direction.In aforementioned calculation method, having can
Can have that barrier is complex-shaped, the microphone for being initially received reflection sound wave does not exist with the sound-producing device for sending predetermined sound wave
The case where at one, can receive the direction of propagation of reflection sound wave and predetermined sound to exclude such case by verifying microphone
Whether direction of wave travel is realized on the contrary, if just the opposite, illustrates at one；Otherwise not at one.
For the b in 4) alternative) scheme, it is initially received the microphone and the transmission frequency of a certain frequency hop sound wave
The sound-producing device distance of the predetermined sound wave of rate is nearest, in the case of rough calculation, it is believed that the two is at one, at this time according to the velocity of sound and the frequency
The half that rate sound wave transmits and receives the product of time difference can obtain the sound-producing device for sending the predetermined sound wave of the frequency in predetermined sound
Distance away from front obstacle in direction of wave travel.In aforementioned calculation method, it is possible to which it is complex-shaped that there are barriers, connects at first
It receives the microphone of the frequency hop sound wave and sends the case where sound-producing device of the predetermined sound wave of the frequency is not at one, for row
Except such case, the direction of propagation and the predetermined sound wave biography of the frequency of the frequency hop sound wave can be received by verifying microphone
Broadcast whether direction is realized on the contrary.
Description of the drawings
Fig. 1 is the three-dimensional structure diagram of the intelligent sound box in one embodiment of the invention；
Fig. 2 is the signal that the sound-producing device of the intelligent sound box in Fig. 1 sends that predetermined sound wave encounters barrier with predetermined direction
Figure；
Fig. 3 is the flow chart of the audio effect generating method of the intelligent sound box in Fig. 1；
Fig. 4 is the flow chart of the localization method of user；
Fig. 5 is the schematic diagram for sequencing progress user's positioning that the intelligent sound box in Fig. 1 is received according to microphone；
Fig. 6 is the principle for sound wave volume progress user's positioning that the intelligent sound box in Fig. 1 is received according to microphone
Figure；
Fig. 7 is a kind of flow chart of localization method of barrier of the intelligent sound box use environment in Fig. 1；
Fig. 8 is the schematic diagram that the directly on top sound-producing device of the intelligent sound box in Fig. 2 sends predetermined sound wave；
Fig. 9 is the predetermined sound wave mode of transmission in corresponding diagram 8, and intelligent sound box receives reflection sound wave according to each microphone
Sequencing carry out barrier positioning schematic diagram；
Figure 10 is the flow chart of another localization method of the barrier of intelligent sound box use environment；
When Figure 11 is that user is located at corner, L channel sound wave reflects to form L channel through barrier respectively with right channel sound wave
The schematic diagram of mixing sound and right channel mixing sound；
When Figure 12 is that user is located at intermediate, L channel sound wave reflects to form L channel through barrier respectively with right channel sound wave
The schematic diagram of mixing sound and right channel mixing sound.
Specific implementation mode
To make the above purposes, features and advantages of the invention more obvious and understandable, below in conjunction with the accompanying drawings to the present invention
Specific embodiment be described in detail.
Fig. 1 is the three-dimensional structure diagram of the intelligent sound box in one embodiment of the invention.Shown in referring to Fig.1, the intelligent sound box 1
In, it is distributed with several sound-producing devices 11 around the barrel of intelligent sound box 1, in several sound-producing devices 11, is located at user present position
The sound-producing device 11 in left side sends L channel sound wave, and L channel sound wave reflects to form L channel through the barrier on the left of user and mixes
Sound；Sound-producing device 11 on the right side of user present position sends right channel sound wave, obstacle of the right channel sound wave through user right
Object reflects to form right channel mixing sound, and L channel mixing sound is used to form stereo sound effect with right channel mixing sound and is sent to user.
Shown in referring to Fig.1, it is inside and outside or in the barrel that multiple sound-producing devices 11 can be fixed on barrel.Sound-producing device 11
Can be that loudspeaker are preferably exposed to improve sound wave transmission effect in air；To improve the directionality and intelligence that sound wave transmits
More than 1 kinds of use environment compatibility of speaker is preferably embedded in barrel or is fixed on outside barrel, and is distributed within one week along barrel, preferably exists
One week equal distribution.
Shown in Fig. 1, several microphones 12 are also distributed in the barrel around intelligent sound box 1.Multiple microphones 12 can
To be fixed on cover, it is inside and outside or in the barrel that barrel can also be fixed on.Microphone 12 can perceive acoustic pressure for one
Pressure sensor senses effect to improve, is preferably exposed in outside air.Those 12 one side of microphone can be according to reception
The information of acoustic wave of the user instruction arrived judges the orientation of user, and on the other hand, multiple sound-producing devices 11 can be sent out with predetermined direction
Predetermined sound wave is sent, multiple microphones 12, which can receive predetermined sound wave, to be encountered barrier and reflect to form reflection sound wave.Predetermined sound wave
The information of information and the reflection sound wave received can be used for positioning barrier.
Fig. 2 is that the sound-producing device 11 of the intelligent sound box 1 in Fig. 1 sends predetermined sound wave with predetermined direction and encounters showing for barrier
It is intended to.With reference to shown in Fig. 2, it can be seen that some predetermined sound waves encounter barrier after be vertical incidence, thus reflection angle is also in
Microphone 12 is arranged near sound-producing device 11, can directly receive reflection sound wave in such cases for vertical reflection.At this time
The sound-producing device 11 for sending predetermined sound wave can be obtained in predetermined sound according to the half of the velocity of sound and the product for transmitting and receiving the time difference
Distance away from front obstacle in direction of wave travel.
Under above-mentioned principle, a sound-producing device 11 and a microphone 12 can form one group, the sounding dress in every group
It sets 11 and is located at same place with microphone 12.In addition it is also possible to which as shown in Figure 1, each microphone 12 is located at sustained height, Ge Gefa
Acoustic device 11 is located at sustained height, and multiple microphones 12 and multiple sound-producing devices 11 all surround intelligent sound box barrel equal distribution；
The microphone 12 that one sound-producing device 11 and a microphone 12 are formed in one group, every group is distributed with about 11 sound-producing device.
On the basis of above-mentioned intelligent sound box 1, the present invention also provides audio effect generating methods.Fig. 3 is the intelligent sound box in Fig. 1
Audio effect generating method flow chart.
Each step described in detail below.
With reference to shown in Fig. 3, step S1 is first carried out, respectively the barrier of the user to intelligent sound box 1 and use environment into
Row positioning.
Fig. 4 is the flow chart of the localization method of user.With reference to Fig. 4, step S11 is first carried out, user sends towards intelligent sound box 1
Instruct sound wave.
Instruction sound wave is the sound wave for carrying command information.Command information represents pending task.
Then step S12 is executed, is believed according to the sound wave that several microphones 12 being distributed around intelligent sound box barrel receive
Breath judges the orientation of user.
In one scheme, the information of acoustic wave received includes the time of reception.Fig. 5 is intelligent sound box in Fig. 1 according to Mike
The sequencing that wind receives carries out the schematic diagram of user's positioning.Specifically, referring to Figure 5, in eight microphones 12：Distance
The nearest microphone 12 of user is initially received sound wave；Microphone 12 apart from next, second receives sound wave；Distance is thirdly
Microphone 12, third receives sound wave；The remote microphone 12 of inverse distance second, the 4th receives sound wave；Distance is farthest
Microphone 12, finally receives sound wave.As can be seen that the close microphone 12 for being initially received sound wave in orientation residing for user,
Far from the microphone 12 for finally receiving sound wave.
In specific implementation process, exist be initially received the microphone 12 of sound wave there are two the case where.In such cases,
Orientation residing for user is close to the centre of two microphones 12.In practice, there is also the microphones 12 for finally receiving sound wave two
A situation.In such cases, centre of the orientation residing for user far from two microphones 12.
In another scheme, the information of acoustic wave received includes the volume of sound wave.Fig. 6 is the intelligent sound box in Fig. 1
The schematic diagram of user's positioning is carried out according to the sound wave volume that microphone receives.Specifically, with reference to shown in Fig. 6, eight wheats
In gram wind 12：The sound wave volume that the microphone 12 nearest apart from user receives is maximum；Microphone 12 apart from next, receives
Sound wave volume decrease；The microphone 12 of distance thirdly, the sound wave volume received decrease again；Inverse distance
Two remote microphones 12, the sound wave volume received are second from the bottom small；Apart from farthest microphone 12, the sound wave volume that receives
It is minimum.As can be seen that orientation residing for user is close to receiving the maximum microphone 12 of sound wave volume, far from receiving sound wave sound
Measure minimum microphone 12.
In specific implementation process, exist receive the maximum microphone of sound wave volume 12 there are two the case where.Such feelings
Under condition, the orientation residing for user is close to the centre of two microphones 12.In practice, there is also the Mikes for receiving sound wave volume minimum
The case where there are two wind 12.In such cases, centre of the orientation residing for user far from two microphones 12.
The barrier localization method of use environment introduced below.Fig. 7 is the barrier of the intelligent sound box use environment in Fig. 1
A kind of flow chart of localization method.
In this localization method, several sound-producing devices 11 being distributed around intelligent sound box barrel can be numbered, it is each
Sound-producing device 11 executes the positioning for the barrier that step S16 to S18 is obtained on its predetermined Acoustic Wave Propagation direction one by one.
Below for the positioning of the barrier by a sound-producing device 11 on predetermined Acoustic Wave Propagation direction, introduce respectively each
Step.
With reference to shown in Fig. 7, step S16 is first carried out, a sound-producing device 11 sends predetermined sound wave with predetermined direction, makes a reservation for
Sound wave encounters barrier and reflects to form reflection sound wave.
Fig. 8 is the schematic diagram that the directly on top sound-producing device of the intelligent sound box in Fig. 2 sends predetermined sound wave.In Fig. 1, intelligence
The barrel of energy speaker 1 is cylindrical, and the direction of propagation for the predetermined sound wave that each sound-producing device 11 is sent is hung down as shown in Fig. 2 and Fig. 8
Cutting flat with for straight tube wall surface faces outwardly.In other embodiments, the other shapes such as the barrel of intelligent sound box 1 can also be square, respectively
A sound-producing device 11 can send predetermined sound wave towards front.
Predetermined sound wave encounters barrier and reflects to form reflection sound wave, planar process where predetermined Acoustic Wave Propagation direction, barrier
Meet reflection law between line direction and reflection sound wave direction of propagation three.If predetermined Acoustic Wave Propagation direction vertical incidence obstacle
Plane where object, then reflection sound wave is reversed in 180 degree.
Then step S17 is executed, several microphones 12 around the distribution of intelligent sound box barrel receive reflection sound wave.
In the present embodiment, multiple microphones 12 receive reflection sound wave.With reference to shown in Fig. 8, it is to be understood that due to each
Sound-producing device 11 of a microphone 12 apart from surface is far and near different, thus the reflection sound wave received is also variant.The difference
May include receiving sequencing and volume difference.
Step S18 is executed later, according to the Information locating of the information of predetermined sound wave and the reflection sound wave received the barrier
Hinder object.
In one scheme, the information of predetermined sound wave is delivery time, and the information of the reflection sound wave received is the time of reception.
Information of acoustic wave difference is to transmit and receive the time difference.Fig. 9 is the predetermined sound wave mode of transmission in corresponding diagram 8, and intelligent sound box is according to each
A microphone receives the schematic diagram of the sequencing progress barrier positioning of reflection sound wave.Specifically, with reference to shown in Fig. 9, eight
In a microphone 12：The microphone 12 nearest apart from the top sound-producing device 11 is initially received sound wave；Mike apart from next
Wind 12, second receives sound wave；The microphone 12 of distance thirdly, third receives sound wave；The remote Mike of inverse distance second
Wind 12, the 4th receives sound wave；Apart from farthest microphone 12, sound wave is finally received.As can be seen that apart from predetermined sound is sent
The microphone 12 that the sound-producing device 11 of wave is nearest is initially received reflection sound wave, is finally received apart from farthest microphone 12.
In the case of rough calculation, it is believed that both the microphones 12 for sending the sound-producing device 11 of predetermined sound wave, being initially received reflection sound wave
At one, the sound-producing device for sending predetermined sound wave can be obtained according to the half of the velocity of sound and the product for transmitting and receiving the time difference at this time
11 on predetermined Acoustic Wave Propagation direction the distance away from front obstacle.
In aforementioned coarse computational methods, it is possible to which it is complex-shaped that there are barriers, is initially received the Mike of reflection sound wave
Wind 12 with send the case where sound-producing device 11 of predetermined sound wave is not at one, such as in Fig. 2 the upper left corner sound-producing device 11, be
Such case is excluded, can receive the direction of propagation of reflection sound wave and predetermined Acoustic Wave Propagation direction by verification microphone 12 is
It is no opposite to realize.In the present solution, the sensing element of microphone 12 need to detect the angle on sound wave incident to the sensing element, example
Such as realized by gyroscope.It should be noted that for the sound-producing device 11 excluded, for example, in Fig. 2 four on angle
Sound-producing device 11, do not obtain and send effective obstacle distance on Acoustic Wave Propagation direction, then illustrate those sound-producing devices 11 not
It is the barrier in front of face.
In another scheme, information of acoustic wave difference includes volume attenuation degree.Volume attenuation degree increases with propagation distance
And increase.Thus, the reflection sound wave volume that the microphone 12 nearest apart from the sound-producing device 11 for sending predetermined sound wave receives is most
Greatly, the reflection sound wave volume minimum received apart from farthest microphone 12.In the case of rough calculation, it is believed that send predetermined sound wave
Sound-producing device 11, both receive the maximum microphone of reflection sound wave volume 12 at one, at this time according to acoustic attenuation degree
Relationship between distance can obtain the sound-producing device 11 for sending predetermined sound wave and hinder away from front on predetermined Acoustic Wave Propagation direction
Hinder the distance of object.In aforementioned coarse computational methods, it is possible to which it is complex-shaped that there are barriers, and it is maximum to receive reflection sound wave volume
Microphone 12 with send the case where sound-producing device 11 of predetermined sound wave is not at one, such as the sounding in Fig. 2 on four angles
Device 11 can receive the direction of propagation of reflection sound wave and predetermined sound wave to exclude such case by verifying microphone 12
Whether realize on the contrary the direction of propagation.
In addition to above-mentioned localization method, the present invention also provides another positioning sides of the barrier of intelligent sound box use environment
Method.Figure 10 is the flow chart of the another kind localization method.
Referring to Fig.1 shown in 0, step S16 ' is first carried out, several sound-producing devices 11 send phase simultaneously with corresponding predetermined direction
The predetermined sound wave of frequency, predetermined sound wave is answered to encounter barrier and reflect to form reflection sound wave.
Vertical the cutting flat with for barrel surface in the direction of propagation for the predetermined sound wave that each sound-producing device 11 is sent faces outwardly, but frequency
It is different, to distinguish each sound-producing device 11 according to frequency of sound wave.About predetermined direction, such as previous embodiment, intelligent sound box 1
Barrel the other shapes such as can also be square, each sound-producing device 11 can send predetermined sound wave towards front.
Predetermined sound wave encounters barrier and reflects to form reflection sound wave, and reflection sound wave carries frequency information.In addition to this, make a reservation for
It is fixed still to meet reflection where Acoustic Wave Propagation direction, barrier between plane normal direction and reflection sound wave direction of propagation three
Rule, if plane where predetermined Acoustic Wave Propagation direction vertical incidence barrier, reflection sound wave is still in that 180 degree is reversed.
Then step S17 ' is executed, several microphones 12 receive reflection sound wave.
In the present embodiment, multiple microphones 12 receive the reflection sound wave of each frequency, and can distinguish the reflected sound of each frequency
Wave, such as receiving time and volume can be distinguished.
Step S18 ' is executed later, and predetermined sound wave and the time for being initially received reflection sound wave are sent according to corresponding frequencies
Difference obtains each sound-producing device 11 the distance between in a predetermined direction with barrier.
In this step, it is initially received the microphone 12 of a certain frequency hop sound wave and the hair for sending the predetermined sound wave of the frequency
Acoustic device 11 is apart from nearest, in the case of rough calculation, it is believed that the two connects according to the velocity of sound and frequency sound waves transmission at this time at one
The sound-producing device 11 for sending the predetermined sound wave of the frequency can be obtained in predetermined Acoustic Wave Propagation direction by receiving the half of the product of time difference
On distance apart from front obstacle.In aforementioned coarse computational methods, it is possible to which it is complex-shaped that there are barriers, is initially received
The case where microphone 12 of the frequency hop sound wave and the sound-producing device 11 of the transmission predetermined sound wave of the frequency is not at one, for row
Except such case, whether the direction of propagation that the frequency hop sound wave can be received by verification microphone 12 is predetermined with the frequency
Acoustic Wave Propagation direction is just the opposite to be realized.
Then step S2 is executed, in several sound-producing devices 11 of intelligent sound box barrel distribution, is located at position residing for user
The sound-producing device 11 for setting left side sends L channel sound wave, is located at the sound-producing device 11 on the right side of user present position and sends right channel sound
Wave.
It is positioned by the user of step S1, using user as endpoint, a ray is done to intelligent sound box 1, it can be by intelligent sound box point
For two halves, wherein half is located on the left of user, the other half is located at user right.In the sound-producing device 11 in the half of left side
All or part of selected broadcasting, that is, send L channel sound wave；Whole in the sound-producing device 11 in the half of right side or portion
Divide selected broadcasting, that is, sends right channel sound wave.
In one scheme, the audio file to be played of sound-producing device 11 is two-channel file, then a channel audio file
The sound-producing device 11 being sent on the left of user, correspondence play out L channel sound wave；Another channel audio file is sent to user
The sound-producing device 11 on right side, correspondence play out right channel sound wave.
In another scheme, the audio file to be played of sound-producing device 11 is mono audio file, then monophonic audio
File first decomposes software through sound channel and is divided into left channel audio file and right audio channel file, left channel audio file correspondence through with
The broadcasting of sound-producing device 11 forms sound channel sound wave on the left of family, and right audio channel file corresponds to correspondence and broadcast through user right sound-producing device 11
It puts to form right channel sound wave.
When sending sound wave positioned at the sound-producing device 11 of user present position left and right sides, sending time and volume can be with
It is adjusted according to the distance away from barrier on its propagation path.Such as：The sound-producing device 11 close apart from barrier is relative to remote
, it sends evening at sound wave moment, and/or sound wave volume is small；Otherwise it sends morning at sound wave moment and/or sound wave gives great volume.
When sending L channel sound wave, it is located at whole sound-producing devices 11 on the left of user and sends sound wave, can also partly send.
As for whole or part, if part, which part is selected, determines that method is as follows：According to each sound-producing device 11 in sound wave
Distance away from barrier on predetermined sending direction simulates the shape and size of barrier；The shape and size of barrier
After determination, the direction of propagation that each sound-producing device 11 sends reflection sound wave of the sound wave after barrier reflects with predetermined direction can be with
It determines；If the left side of user present position is directed toward in the reflection sound wave direction of propagation, it is selected.11 side of choosing of sound-producing device on right side
Method of the method with reference to above-mentioned left side sound-producing device 11.
It can be simplified when shape and the size simulation of above-mentioned barrier, such as be reduced to Si Biqiang.
Step S3 is executed later, and L channel sound wave reflects to form L channel mixing sound, right channel through the barrier on the left of user
Barrier of the sound wave through user right reflects to form right channel mixing sound, and L channel mixing sound forms stereo sound effect hair with right channel mixing sound
It send to user.
When Figure 11 is that user is located at corner, L channel sound wave reflects to form L channel through barrier respectively with right channel sound wave
The schematic diagram of mixing sound and right channel mixing sound.When Figure 12 is that user is located at intermediate, L channel sound wave is with right channel sound wave respectively through barrier
Object is hindered to reflect to form the schematic diagram of L channel mixing sound and right channel mixing sound.
By in step S1 barrier positioning, can according to each sound-producing device 11 on the predetermined sending direction of sound wave away from
The distance of barrier simulates the shape and size of barrier；After the shape and size of barrier determine, each sounding dress
Set the left side that the direction of propagation that 11 send reflection sound wave of the sound wave after barrier reflects with predetermined direction corresponds to user present position
Right channel.
It is understood that referring to Fig.1 shown in 1 and Figure 12, L channel mixing sound collects with right channel mixing sound with directionality
In be sent to user, form stereo sound effect at user, more preferably audio experience can be provided to user.
Although present disclosure is as above, present invention is not limited to this.Any those skilled in the art are not departing from this
It in the spirit and scope of invention, can make various changes or modifications, therefore protection scope of the present invention should be with claim institute
Subject to the range of restriction.
Claims (14)
1. a kind of audio effect generating method of intelligent sound box, which is characterized in that including：
The barrier of the user of intelligent sound box and use environment are positioned respectively；
In several sound-producing devices of intelligent sound box barrel distribution, it is located at the sound-producing device on the left of user present position and sends a left side
Sound channel sound wave is located at the sound-producing device on the right side of user present position and sends right channel sound wave；
L channel sound wave reflects to form L channel mixing sound, obstacle of the right channel sound wave through user right through the barrier on the left of user
Object reflects to form right channel mixing sound, and the L channel mixing sound forms stereo sound effect with right channel mixing sound and is sent to user.
2. audio effect generating method according to claim 1, which is characterized in that several hairs being located on the left of user present position
Part in acoustic device sends L channel sound wave；The part in several sound-producing devices on the right side of user present position and/or
Send right channel sound wave.
3. audio effect generating method according to claim 1, which is characterized in that if audio file is mono audio file,
The audio file first decomposes software through sound channel and is divided into left channel audio file and right audio channel file, left channel audio file
Corresponding to L channel sound wave, right audio channel file corresponds to right channel sound wave.
4. audio effect generating method according to claim 1, which is characterized in that the method for positioning user packet of intelligent sound box
It includes：
User sends instruction sound wave towards intelligent sound box；
The information of acoustic wave received according to several microphones being distributed around intelligent sound box barrel judges the orientation of user.
5. audio effect generating method according to claim 4, which is characterized in that the information of acoustic wave received includes receiving
Moment；Orientation residing for user is close to the microphone for being initially received sound wave, far from the microphone for finally receiving sound wave.
6. audio effect generating method according to claim 4 or 5, which is characterized in that the information of acoustic wave received includes
The volume of sound wave；Orientation residing for user is close to receiving the maximum microphone of sound wave volume, far from receiving sound wave sound
Measure minimum microphone.
7. audio effect generating method according to claim 1, which is characterized in that the obstacle of the use environment of the intelligent sound box
Object localization method includes：
Several sound-producing devices around the distribution of intelligent sound box barrel send predetermined sound wave with predetermined direction, and the predetermined sound wave is encountered
Barrier reflects to form reflection sound wave；
Several microphones around the distribution of intelligent sound box barrel receive the reflection sound wave；
According to barrier described in the Information locating of the information of predetermined sound wave and the reflection sound wave received.
8. audio effect generating method according to claim 7, which is characterized in that each sound-producing device in several sound-producing devices
The distance between obtained one by one in a predetermined direction with corresponding barrier, obtaining step includes：
One sound-producing device sends predetermined sound wave with predetermined direction；
Several microphones receive reflection sound wave；
According to sending predetermined sound wave and being initially received the time difference of reflection sound wave, obtain sound-producing device in a predetermined direction with barrier
Hinder the distance between object.
9. audio effect generating method according to claim 7, which is characterized in that each sound-producing device in several sound-producing devices
The distance between obtained simultaneously in a predetermined direction with corresponding barrier, obtaining step includes：
Several sound-producing devices send the predetermined sound wave of corresponding frequencies with corresponding predetermined direction simultaneously, and each sound-producing device is sent pre-
The frequency for determining sound wave is different；
Several microphones receive reflection sound wave；
Predetermined sound wave and the time difference for being initially received reflection sound wave are sent according to corresponding frequencies, obtains each sound-producing device pre-
Determine on direction the distance between with barrier.
10. a kind of intelligent sound box, which is characterized in that several sound-producing devices are distributed with around the barrel of the intelligent sound box, it is several
In sound-producing device, it is located at the sound-producing device on the left of user present position and sends L channel sound wave, L channel sound wave is through on the left of user
Barrier reflect to form L channel mixing sound；Sound-producing device on the right side of user present position sends right channel sound wave, right sound
Barrier of the road sound wave through user right reflects to form right channel mixing sound, and the L channel mixing sound is used to form with right channel mixing sound
Stereo sound effect is sent to user.
11. intelligent sound box according to claim 10, which is characterized in that the barrel around the intelligent sound box is also distributed with
Several microphones, several microphones are used to judge according to the information of acoustic wave of the user instruction received the orientation of user.
12. intelligent sound box according to claim 11, which is characterized in that several sound-producing devices with predetermined direction for being sent
Predetermined sound wave；Several microphones encounter the reflection sound wave that barrier reflects to form for receiving the predetermined sound wave, described
The information of the information of predetermined sound wave and the reflection sound wave received is for positioning the barrier.
13. intelligent sound box according to claim 11, which is characterized in that each microphone is located at sustained height, Ge Gefa
Acoustic device is located at sustained height, and multiple microphones and multiple sound-producing devices all surround intelligent sound box barrel equal distribution；One hair
The microphone that acoustic device and a microphone are formed in one group, every group is distributed up and down with sound-producing device.
14. intelligent sound box according to claim 11, which is characterized in that a sound-producing device and a microphone form one
Group, the sound-producing device in every group are located at same place with microphone.
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Application publication date: 20180918 |