CN107623887A - A kind of multi-channel sound real time fusion system and method for flight simulator - Google Patents

A kind of multi-channel sound real time fusion system and method for flight simulator Download PDF

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CN107623887A
CN107623887A CN201710674727.1A CN201710674727A CN107623887A CN 107623887 A CN107623887 A CN 107623887A CN 201710674727 A CN201710674727 A CN 201710674727A CN 107623887 A CN107623887 A CN 107623887A
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mrow
sound
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flight
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CN107623887B (en
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夏建国
谢东来
陈曦
何法江
赵明波
赵广兴
孙振宇
贾慈力
潘龙
周增波
蒋龙威
谢晨
李永平
曹达敏
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Shanghai University of Engineering Science
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Shanghai University of Engineering Science
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Abstract

The invention belongs to flight simulation technology field, discloses a kind of multi-channel sound real time fusion system for simulator flight, and the system includes：Multiple audio amplifiers for being arranged on driving cabin, the multiple sound cards being connected with multiple audio amplifiers, the sound card are connected with sound equipment control main frame, and the sound equipment control main frame carries out real time fusion process to sound clip, drive sound card, are played out by audio amplifier；Using the profile of driving cabin as positioning datum, front towards cockpit, is arranged multiple audio amplifiers after the front direction of driving cabin in multiple row, and bottom up from driving cabin is arranged and be symmetrically distributed in around major-minor driver's seat in multilayer；The invention also discloses a kind of multi-channel sound real time integrating method for simulator flight.The present invention makes driver reach auditory perception on the spot in person, enhances the feeling of immersion and the sense of reality of the flight simulator that drives an airplane, reached the requirement of D level aircraft flight simulation machines by Space integration and real time fusion.

Description

A kind of multi-channel sound real time fusion system and method for flight simulator
Technical field
The invention belongs to flight simulation technology field, and in particular to a kind of multi-channel sound for simulator flight is real-time Emerging system and method.
Background technology
In the design of D level aircraft flight simulations machine, audio system is one of important subsystem, in the subjectivity of characterization test Item, objective Xiang Zhongjun are distinctly claimed., it is necessary to according to the state of flight of aircraft different time when analog machine is run, play in real time The audio files of corresponding diverse location source of sound, to build real cabin ambient.It is primarily present following difficult point：
(1) Space integration：Aircraft sounding position corresponding to source of sound is different, it is necessary to which one or more passages of relevant position come Construct sounding environment.
(2) real time fusion：The state of aircraft is different, may trigger different sound and play, existing source of sound is all aircraft Acoustic environment in a period of time under given conditions, how by the audio files under multiple specified conditions go construct aircraft it is complete Acoustic environment under status condition is a difficult point.
Therefore, effective integration can be carried out by the two aspects by being badly in need of one kind, to reach the design of D level aircraft flight simulations machine Audio system requirement.
The content of the invention
The invention provides a kind of multi-channel sound real time fusion system and method for simulator flight, solves existing There is the problem of sound analogue system Space integration and real time fusion difficulty.
The present invention can be achieved through the following technical solutions：
A kind of multi-channel sound real time fusion system for simulator flight, including：Multiple sounds for being arranged on driving cabin Case, the multiple sound cards being connected with multiple audio amplifiers, the sound card are connected with sound equipment control main frame, the sound equipment control main frame pair Sound clip carries out real time fusion process, drives sound card, is played out by audio amplifier；
Multiple audio amplifiers are using the profile of driving cabin as positioning datum, and front is towards cockpit, from driving cabin Arranged after front direction in multiple row, bottom up from driving cabin is arranged and be symmetrically distributed in around major-minor driver's seat in multilayer.
Further, the audio amplifier is provided with 13, is arranged in five layer of eight row around major-minor driver's seat, is driven in major-minor Respectively one audio amplifier of setting, upper strata center respectively set an audio amplifier in front of seat, and respectively one audio amplifier of setting, upper strata rear are each for upper strata inside One audio amplifier is set, and rear side respectively sets an audio amplifier, an audio amplifier, lower floor rear centrally disposed one are respectively set in front of lower floor Individual woofer.
Further, the sound card is provided with two seven points one sound channel sound cards and an integrated sound card, two described seven points one Sound channel sound card is respectively used to drive six audio amplifiers, and six audio amplifiers are respectively positioned at major-minor driver's seat front, rear side, upper strata In front of rear or lower floor, inside upper strata, upper strata center, the integrated sound card is used to drive woofer.
A kind of real time integrating method based on the above-mentioned multi-channel sound real time fusion system for simulator flight, bag Include following steps：
Step 1: the flight parameter come out according to the master controller real-time resolving of flight simulator, influences to join according to feature Number extracting method, analysis determine the feature affecting parameters of mission phase and corresponding each mission phase；
Step 2: according to the mission phase of whole flight course and the changing rule of feature affecting parameters, to aircraft manufacturing The audio files that business provides enters edlin, cut, and obtains multiple stable state and transient state sound clips of corresponding respective mission phase；
Step 3: according to practical flight parameter, to multiple stable state and transient state sound clip carry out sound of respective mission phase Sound merges, the sound clip after being merged, and obtains the sound clip play parameter of corresponding each sound clip in real time, described Sound clip play parameter includes whether broadcasting, gain coefficient, coefficient of frequency, broadcast mode and location parameter；
Step 4: according to OpenAL play rules, according to OpenAL audio play parameter method for transformation, sound clip is realized Play parameter to OpenAL broadcast source parameters conversion, so as to drive sound card to be played by audio amplifier.
Further, the mission phase in the step 1 includes ground roll-out, and corresponding feature affecting parameters include starting Machine thrust；Take off, corresponding feature affecting parameters include undercarriage, air speed and wing flap；Climb, corresponding feature affecting parameters bag Include height；Cruise, corresponding feature affecting parameters include height and spoiler；Decline, corresponding feature affecting parameters include height Degree and spoiler, enter closely, corresponding feature affecting parameters include undercarriage, air speed and wing flap；And land, corresponding feature shadow Ringing parameter includes rate of descent, spoiler and engine reverse thrust.
Further, the sound fusion method in the step 3 comprises the following steps：
Step I, known multiple stable states or transient state sound clip according to respective mission phase, using following equation, Calculate stable state or transient state sound clip under practical flight Parameter Conditions；
Wherein, SN1Stable state or transient state sound clip under practical flight Parameter Conditions are represented,WithRepresent Two stable states or transient state sound clip under the adjacent flight Parameter Conditions known, N1k,N1,N1k+1Represent flight parameter, a1And a2 Represent gain coefficient；
And/or step II, two sound clips according to priority broadcasting, using following equation, calculating includes transition rank The whole sound clip of section；
Wherein, S represents the whole sound clip for including transition stage, S1Represent the sound clip first played, S2Broadcast after expression The sound clip put, tstartThe sound clip for representing first to play starts the time exited, tendThe sound clip played after expression is complete Into the time of entrance, ttransRepresent transit time, a3And a4Represent gain coefficient.
Further, whether playing in the sound clip play parameter judges which, which belongs to, flies by current flight parameter Row order section and then determine which sound clip plays；Broadcast mode includes loop play and single play, the steady-state sound tablet Section is used for loop play, and the transient state sound clip is used for single play；It is real that location parameter is expressed as corresponding each sound clip The position coordinates that border plays, the position coordinates uses driver's cabin sound test point as origin, X-axis along airplane pitch axis to the right, Y-axis Vertically upward, Z axis is along the coordinate under aircraft longitudinal axis coordinate system backward.
The beneficial technique effect of the present invention is as follows：
The present invention includes Space integration and the aspect of real time fusion two, in terms of Co-factor propagation using in cockpit sound test point as Center, three-dimensional system of coordinate is carried out to 13 audio amplifiers and is accurately positioned, OpenAL positions are set by the algorithm in sound equipment control program Parameter, all sound materials are distributed in three dimensions with having directive property, formation one is brand-new around test point surround It is stereo.
By four pole parameter conversion method in terms of real time fusion, ginseng is influenceed according to the feature during aircraft practical flight The changing rule of number and audio, sound is carried out according to flight parameter and playing sequence respectively and merges to obtain the broadcasting ginseng of sound material Number, and final OpenAL broadcast source parameters are converted into, realize the real-time broadcasting that audio changes with state of flight.
By the fusion in terms of the two, driver is reached auditory perception on the spot in person, enhance drive an airplane it is winged The feeling of immersion and the sense of reality of row analog machine, the requirement of D level aircraft flight simulation machines is reached.
Brief description of the drawings
Fig. 1 is the overall construction drawing of the present invention；
Fig. 2 is the top view of the general structure of the present invention；
Fig. 3 is the right view of the general structure of the present invention；
Fig. 4 is the definition coordinate system of location parameter in sound clip play parameter and OpenAL broadcast source parameters of the invention Schematic diagram；
Fig. 5 is flow chart of the method for the present invention；
Fig. 6 is the OpenAL audio play parameter method for transformation flow charts of the present invention；
Wherein, left voice box in front of 1-, right voice box in front of 2-, 3- upper stratas center left voice box, 4- upper stratas center right voice box, on 5- The internal left voice box of layer, 6- upper stratas inside right voice box, 7- upper stratas rear left voice box, 8- upper stratas rear right voice box, 9- rears side are left Audio amplifier, 10- rears side right voice box, 11- lower floors front left voice box, 12- lower floors front right voice box, 13- lower floors rear subwoofer.
Embodiment
Below in conjunction with the accompanying drawings and preferred embodiment describes the embodiment of the present invention in detail.
The invention discloses a kind of multi-channel sound real time fusion system for simulator flight, the system includes：Ten Three audio amplifiers for being arranged on driving cabin, the two seven points one sound channel sound cards and an integrated sound card being connected with this 13 audio amplifiers, These three sound cards are connected with sound equipment control main frame, and the sound equipment control main frame carries out real time fusion process, driving sound to sound clip Card, is played out by audio amplifier.
As shown in figure 1, this 13 audio amplifiers are using the profile of driving cabin as positioning datum, front towards cockpit, It is symmetrically distributed in around major-minor driver's seat.Arranged after the front direction of driving cabin in eight row, as shown in Figure 2；From the bottom of driving cabin Portion arranges in five layers upwards, as shown in Figure 3.Specific distribution is as follows：One audio amplifier is respectively set in front of major-minor driver's seat, in upper strata The heart respectively sets an audio amplifier, and an audio amplifier is respectively set inside upper strata, and upper strata rear respectively sets an audio amplifier, and rear side is respectively set One audio amplifier, lower floor front respectively set an audio amplifier, the centrally disposed woofer in lower floor rear.
The distribution of sound box is based on the binaural effect theory of people, using human auditory system to voice signal property Identification, audio amplifier space orientation is carried out in the keypoint part for pressing close to cockpit shell.Drive, slide, take off, climb, patrol from aircraft Navigate, decline, enter it is near, land, until start authority vehicle, pilot in cockpit can vivid sense by the normal ring in flight course Border noise, airflow noise, engine sound, undercarriage control sound, wing flap folding and unfolding and flap folding and unfolding sound, raindrop strike windscreen glass Glass sound, rain brush movement sound, various alarm sounds, wheel and rattle of the grating on ground and aircraft etc., make to fly Office staff is placed oneself in the midst of in real 3 D stereo surround sound.
This 13 audio amplifiers are distributed in different locus and (are shown in Table 1, wherein H is installation position angle, and V is installation pitching Angle；Reference frame is as shown in figure 4, azimuth is just to the right, and the angle of pitch is upwards for just), it is different according to actual sounding position Sound can occur, change, translating, disappearing in the audio amplifier of relevant position, at a time can according to location parameter determine by The independent sounding of some audio amplifier, or multiple discrete loudspeaker box combination sounding, the continuity of sound fusion is ensure that, also enhances sound Identification, driver is reached auditory perception on the spot in person, enhance the feeling of immersion of the flight simulator that drives an airplane and true True feeling.
The audio amplifier space layout table of table 1
Numbering Abbreviation Audio amplifier sound channel Audio amplifier positions (relative tertiary location)
1 FLS Front is left around sound channel H:-15° V:-30°
2 FRS Front right surround sound channel H:+15° V:-30°
3 HCLS Upper strata center is left around sound channel H:-90° V:+60°
4 HCRS Upper strata center right surround sound channel H:+90° V:+60°
5 HILS L channel inside upper strata H:-135° V:+45°
6 HIRS R channel inside upper strata H:+80° V:+45°
7 HBLS Upper strata rear left is around sound channel H:-165° V:+45°
8 HBRS Upper strata rear right is around sound channel H:+165° V:+45°
9 BLS Rear side is left around sound channel H:-135° V:-30°
10 BRS Rear side right surround sound channel H:+135° V:-30°
11 DFLS Lower floor's front left is around sound channel H:-30° V:-45°
12 DFRS Lower floor's front right is around sound channel H:+30° V:-45°
13 DBCD Lower floor's rear center channel (subwoofer) H:+180° V:-30°
The sound channel and the corresponding relation of audio amplifier that first seven points one sound channel sound card is used be：Front left-FLS, front right-FRS, A rear side left side-BLS, the rear side right side-BRS, upper rear left-HBLS, upper rear right-HBRS；What second seven points one sound channel sound card was used The corresponding relation of sound channel and audio amplifier is：Lower front left-DFLS, lower front right-DFRS, a upper interior left side-HILS, the upper interior right side-HIRS, on A middle left side-HCLS, the upper middle right side-HCRS, sound card connection subwoofer (DBCD) is integrated, according to system requirements, subwoofer needs independence Control.
The combination is different from traditional five points one or seven points one sound channels Using driving cabin profile as positioning datum, 13 audio amplifiers are subjected to weight using two seven points one sound channel sound cards and an integrated sound card New distribution.Audio amplifier is centered on sound test point in driving cabin, carries out three-dimensional system of coordinate and be accurately positioned, lead to as sound generation source All sound materials are distributed in three dimensions by the algorithm crossed in sound equipment control program with having directive property, and one is formed in test point Individual brand-new surround sound.
The invention also discloses a kind of real time fusion side of the multi-channel sound real time fusion system for simulator flight Method, comprise the following steps, as shown in Figure 5：
Step 1: the flight parameter come out according to the master controller real-time resolving of flight simulator, influences to join according to feature Number extracting method, analysis determine the feature affecting parameters of mission phase and corresponding each mission phase；
Mission phase is divided into ground roll-out according to flight course, takes off, climbs, cruises, declines, enters near, lander Main Stage, the acoustic environment major influence factors in each stage are different.With reference to the flight parameter change in whole flight course The audio files provided with planemaker, extract the feature affecting parameters in each stage.
1. ground roll-out --- motor power
Engine start has obvious sound characteristic with when cut-offfing.When thrust consecutive variations, front and rear thrust variation compared with When big, sound has significant difference in size and frequency；When thrust variation is smaller, sound is distinguished smaller in size and frequency.
2. take off --- undercarriage control state, flap angle
Under takeoff condition, liftoff moment sound has significant change, and engine sound influences to be gradually reduced, undercarriage and wing flap Major influence factors are turned into the impulsive sound of air-flow.When undercarriage is in down state, air speed is bigger, and sound is bigger；When rising and falling When frame is packed up, sound is obviously reduced.When flap angle from large to small when, sound is obviously reduced.
3. climb --- height
During stable climb, motor power and aircraft airspeed change are smaller, are raised with height, atmospheric density drop Low, the sound of aircraft impact air-flow reduces, and the change of adjacent height layer is smaller, and height layer difference changes greatly when larger.
4. cruise --- height, spoiler
During stable cruise, under the conditions of identical height, motor power and aircraft airspeed change are smaller.Risen with height Height, atmospheric density reduce, and the sound of aircraft impact air-flow reduces, and adjacent height layer changes smaller, the larger time-varying of height layer difference Change larger.When spoiler is opened, sound significantly increases.
5. decline --- height, spoiler
During stable decline, motor power and aircraft airspeed change are smaller, with height reduction, atmospheric density liter Height, the sound increase of aircraft impact air-flow, the change of adjacent height layer is smaller, and height layer difference changes greatly when larger.Work as flow-disturbing When plate is opened, sound significantly increases.
6. enter near --- undercarriage, wing flap, flow-disturbing board status
To enter near procedure, motor power, aircraft airspeed are smaller, and undercarriage, wing flap, spoiler put down or opened successively, Aircraft configuration changes, and undercarriage, wing flap, the sound of spoiler impact air-flow turn into major influence factors.
7. land --- rate of descent, it is counter push away, spoiler
There is obvious strike note in landing mission, when aircraft contacts to earth, and change substantially with rate of descent, when rate of descent is larger, Strike note is larger.After landing, opening is pushed away as engine is counter, engine sound influences obvious；After spoiler is opened, acoustic impacts It is larger, and reduce with air speed and reduce.
Step 2: according to the mission phase of whole flight course and the changing rule of feature affecting parameters, to aircraft manufacturing The audio files that business provides enters edlin, cut, and obtains multiple stable state and transient state sound clips of corresponding respective mission phase；
Stable state and transient state sound clip are according to mission phase and principal character affecting parameters, and planemaker is provided Audio files enters (as shown in table 2) of edlin extraction, and wherein stable state represents that the front and rear change of the sound clip of interception is little, is in Plateau, can be according to state of flight loop play；Transient state represents to change greatly before and after the sound clip of interception, represents a certain Sound variation caused by transient volume, meet that only needs play once during playing condition.Wherein, N1 represents motor power size (0 ~100%)；V represents aircraft airspeed, unit section (kts)；H represents aircraft altitude height, unit foot (ft)；Flap represents the flap Wing angle；SinkRate represents rate of descent, unit feet per second (ft/s).
The sound clip for each mission phase that table 2 extracts according to feature affecting parameters
Step 3: according to practical flight parameter, to multiple stable state and transient state sound clip carry out sound of respective mission phase Sound merges, the sound clip after being merged, and obtains the sound clip play parameter of corresponding each sound clip, the sound in real time Tablet section play parameter includes whether broadcasting, gain coefficient, coefficient of frequency, broadcast mode and location parameter；
Specific sound fusion method comprises the following steps：
Step I, known multiple stable states or transient state sound clip according to respective mission phase, using following equation, Calculate stable state or transient state sound clip under practical flight Parameter Conditions；
Wherein, SN1Stable state or transient state sound clip under practical flight Parameter Conditions are represented,WithRepresent Two stable states or transient state sound clip under the adjacent flight Parameter Conditions known, N1k,N1,N1k+1Represent flight parameter, a1And a2 Represent gain coefficient；
And/or step II, two sound clips according to priority broadcasting, using following equation, calculating includes transition rank The whole sound clip of section；
Wherein, S represents the whole sound clip for including transition stage, S1Represent the sound clip first played, S2Broadcast after expression The sound clip put, tstartThe sound clip for representing first to play starts the time exited, tendThe sound clip played after expression is complete Into the time of entrance, ttransRepresent transit time, a3And a4Represent gain coefficient.
In sound clip play parameter whether play by current flight parameter judge to belong to which mission phase and then Determine which sound clip plays；Broadcast mode includes loop play and single play, and above-mentioned stable state sound clip is used to follow Ring plays, and above-mentioned transient state sound clip is used for single play；Location parameter is expressed as corresponding each sound clip actual play Position coordinates, the position coordinates uses driver's cabin sound test point as origin, X-axis along airplane pitch axis to the right, Y-axis vertically to On, Z axis is along the coordinate under aircraft longitudinal axis coordinate system backward.
Step 4: according to OpenAL play rules, according to OpenAL audio play parameter method for transformation, sound clip is realized Play parameter to OpenAL broadcast source parameters conversion, so as to drive sound card to be played by audio amplifier.
First, OpenAL could support up while play 32 audio broadcast sources, just difficult when sound clip quantity is more than 32 To be corresponded with audio broadcast source, it is necessary to distribute audio broadcast source in real time for the audio files that needs play.Secondly, it is necessary to handle Sound clip play parameter is converted into OpenAL audio broadcast source parameters.
Specific OpenAL audio play parameter method for transformation, as shown in fig. 6, wherein N is the audio files sum of loading.
The present invention includes Space integration and the aspect of real time fusion two, in terms of Co-factor propagation using in cockpit sound test point as Center, three-dimensional system of coordinate is carried out to 13 audio amplifiers and is accurately positioned, OpenAL positions are set by the algorithm in sound equipment control program Parameter, all sound materials are distributed in three dimensions with having directive property, formation one is brand-new around test point surround It is stereo.
By four pole parameter conversion method in terms of real time fusion, ginseng is influenceed according to the feature during aircraft practical flight The changing rule of number and audio, sound is carried out according to flight parameter and playing sequence respectively and merges to obtain the broadcasting ginseng of sound material Number, and final OpenAL broadcast source parameters are converted into, realize the real-time broadcasting that audio changes with state of flight.
By the fusion in terms of the two, driver is reached auditory perception on the spot in person, enhance drive an airplane it is winged The feeling of immersion and the sense of reality of row analog machine, the requirement of D level aircraft flight simulation machines is reached.
Although the foregoing describing the embodiment of the present invention, it will be appreciated by those of skill in the art that these It is merely illustrative of, on the premise of without departing substantially from the principle and essence of the present invention, a variety of changes can be made to these embodiments More or change, therefore, protection scope of the present invention is defined by the appended claims.

Claims (7)

  1. A kind of 1. multi-channel sound real time fusion system for simulator flight, it is characterised in that including：Multiple be arranged on is driven The audio amplifier in cabin is sailed, the multiple sound cards being connected with multiple audio amplifiers, the sound card is connected with sound equipment control main frame, the sound equipment control Main frame processed carries out real time fusion process to sound clip, drives sound card, is played out by audio amplifier；
    Multiple audio amplifiers are using the profile of driving cabin as positioning datum, and front is towards cockpit, from the front of driving cabin Arranged backward in multiple row, bottom up from driving cabin is arranged and be symmetrically distributed in around major-minor driver's seat in multilayer.
  2. 2. it is used for the multi-channel sound real time fusion system of simulator flight as claimed in claim 1, it is characterised in that：It is described Audio amplifier is provided with 13, is arranged in five layer of eight row around major-minor driver's seat, and a sound is respectively set in front of major-minor driver's seat Case, upper strata center respectively set an audio amplifier, an audio amplifier are respectively set inside upper strata, and upper strata rear respectively sets an audio amplifier, rear Side respectively sets an audio amplifier, and an audio amplifier, the centrally disposed woofer in lower floor rear are respectively set in front of lower floor.
  3. 3. it is used for the multi-channel sound real time fusion system of simulator flight as claimed in claim 2, it is characterised in that：It is described Sound card is provided with two seven points one sound channel sound cards and an integrated sound card, and two seven points one sound channel sound cards are respectively used to drive Six audio amplifiers, six audio amplifiers respectively positioned at major-minor driver's seat front, rear side, upper strata rear or lower floor front, on Layer is internal, upper strata center, and the integrated sound card is used to drive woofer.
  4. A kind of 4. real time fusion of the multi-channel sound real time fusion system for simulator flight based on described in claim 1 Method, it is characterised in that comprise the following steps：
    Step 1: the flight parameter come out according to the master controller real-time resolving of flight simulator, is carried according to feature affecting parameters Method is taken, analysis determines the feature affecting parameters of mission phase and corresponding each mission phase；
    Step 2: according to the mission phase of whole flight course and the changing rule of feature affecting parameters, planemaker is carried The audio files of confession enters edlin, cut, and obtains multiple stable state and transient state sound clips of corresponding respective mission phase；
    Step 3: according to practical flight parameter, multiple stable state and transient state sound clips progress sound of respective mission phase is melted Close, the sound clip after being merged, and obtain the sound clip play parameter of corresponding each sound clip, the sound in real time Fragment play parameter includes whether broadcasting, gain coefficient, coefficient of frequency, broadcast mode and location parameter；
    Step 4: according to OpenAL play rules, according to OpenAL audio play parameter method for transformation, realize that sound clip plays Parameter to OpenAL broadcast source parameters conversion, so as to drive sound card to be played by audio amplifier.
  5. 5. it is used for the multi-channel sound real time integrating method of simulator flight as claimed in claim 4, it is characterised in that：It is described Mission phase in step 1 includes ground roll-out, and corresponding feature affecting parameters include motor power；Take off, corresponding spy Sign affecting parameters include undercarriage, air speed and wing flap；Climb, corresponding feature affecting parameters include height；Cruise, corresponding spy Levying affecting parameters includes height and spoiler；Decline, corresponding feature affecting parameters include height and spoiler, enter closely, corresponding Feature affecting parameters include undercarriage, air speed and wing flap；And land, corresponding feature affecting parameters include rate of descent, disturbed Flowing plate and engine reverse thrust.
  6. 6. it is used for the multi-channel sound real time integrating method of simulator flight as claimed in claim 5, it is characterised in that described Sound fusion method in step 3 comprises the following steps：
    Step I, known multiple stable states or transient state sound clip according to respective mission phase, using following equation, calculate Stable state or transient state sound clip under practical flight Parameter Conditions；
    <mfenced open = "{" close = ""> <mtable> <mtr> <mtd> <mrow> <msub> <mi>S</mi> <mrow> <mi>N</mi> <mn>1</mn> </mrow> </msub> <mo>=</mo> <msub> <mi>a</mi> <mn>1</mn> </msub> <mo>&amp;CenterDot;</mo> <msub> <mi>S</mi> <mrow> <mi>N</mi> <msub> <mn>1</mn> <mi>k</mi> </msub> </mrow> </msub> <mo>+</mo> <msub> <mi>a</mi> <mn>2</mn> </msub> <mo>&amp;CenterDot;</mo> <msub> <mi>S</mi> <mrow> <mi>N</mi> <msub> <mn>1</mn> <mrow> <mi>k</mi> <mo>+</mo> <mn>1</mn> </mrow> </msub> </mrow> </msub> </mrow> </mtd> </mtr> <mtr> <mtd> <mrow> <msub> <mi>a</mi> <mn>1</mn> </msub> <mo>=</mo> <msqrt> <mfrac> <mrow> <mi>N</mi> <msub> <mn>1</mn> <mrow> <mi>k</mi> <mo>+</mo> <mn>1</mn> </mrow> </msub> <mo>-</mo> <mi>N</mi> <mn>1</mn> </mrow> <mrow> <mi>N</mi> <msub> <mn>1</mn> <mrow> <mi>k</mi> <mo>+</mo> <mn>1</mn> </mrow> </msub> <mo>-</mo> <mi>N</mi> <msub> <mn>1</mn> <mi>k</mi> </msub> </mrow> </mfrac> </msqrt> <mo>,</mo> <msub> <mi>a</mi> <mn>2</mn> </msub> <mo>=</mo> <msqrt> <mfrac> <mrow> <mi>N</mi> <mn>1</mn> <mo>-</mo> <mi>N</mi> <msub> <mn>1</mn> <mi>k</mi> </msub> </mrow> <mrow> <mi>N</mi> <msub> <mn>1</mn> <mrow> <mi>k</mi> <mo>+</mo> <mn>1</mn> </mrow> </msub> <mo>-</mo> <mi>N</mi> <msub> <mn>1</mn> <mi>k</mi> </msub> </mrow> </mfrac> </msqrt> </mrow> </mtd> </mtr> <mtr> <mtd> <mrow> <mi>N</mi> <msub> <mn>1</mn> <mi>k</mi> </msub> <mo>&amp;le;</mo> <mi>N</mi> <mn>1</mn> <mo>&lt;</mo> <mi>N</mi> <msub> <mn>1</mn> <mrow> <mi>k</mi> <mo>+</mo> <mn>1</mn> </mrow> </msub> <mo>,</mo> <mi>k</mi> <mo>=</mo> <mn>1</mn> <mo>,</mo> <mn>2</mn> <mo>,</mo> <mn>3...</mn> </mrow> </mtd> </mtr> </mtable> </mfenced>
    Wherein, SN1Represent stable state or transient state sound clip under practical flight Parameter Conditions, SN1kAnd SN1k+1Phase known to expression Two stable states or transient state sound clip under the conditions of adjacent flight parameter, N1k,N1,N1k+1Represent flight parameter, a1And a2Represent to increase Beneficial coefficient；
    And/or step II, two sound clips according to priority broadcasting, using following equation, calculating includes transition stage Whole sound clip；
    <mfenced open = "{" close = ""> <mtable> <mtr> <mtd> <mrow> <mi>S</mi> <mo>=</mo> <msub> <mi>a</mi> <mn>3</mn> </msub> <mo>&amp;CenterDot;</mo> <msub> <mi>S</mi> <mn>1</mn> </msub> <mo>+</mo> <msub> <mi>a</mi> <mn>4</mn> </msub> <mo>&amp;CenterDot;</mo> <msub> <mi>S</mi> <mn>2</mn> </msub> </mrow> </mtd> <mtd> <mrow></mrow> </mtd> </mtr> <mtr> <mtd> <mrow> <msub> <mi>a</mi> <mn>3</mn> </msub> <mo>=</mo> <msqrt> <mfrac> <mrow> <msub> <mi>t</mi> <mrow> <mi>e</mi> <mi>n</mi> <mi>d</mi> </mrow> </msub> <mo>-</mo> <mi>t</mi> </mrow> <msub> <mi>t</mi> <mrow> <mi>t</mi> <mi>r</mi> <mi>a</mi> <mi>n</mi> <mi>s</mi> </mrow> </msub> </mfrac> </msqrt> <mo>,</mo> <msub> <mi>a</mi> <mn>4</mn> </msub> <mo>=</mo> <msqrt> <mfrac> <mrow> <mi>t</mi> <mo>-</mo> <msub> <mi>t</mi> <mrow> <mi>s</mi> <mi>t</mi> <mi>a</mi> <mi>r</mi> <mi>t</mi> </mrow> </msub> </mrow> <msub> <mi>t</mi> <mrow> <mi>t</mi> <mi>r</mi> <mi>a</mi> <mi>n</mi> <mi>s</mi> </mrow> </msub> </mfrac> </msqrt> </mrow> </mtd> <mtd> <mrow> <msub> <mi>t</mi> <mrow> <mi>s</mi> <mi>t</mi> <mi>a</mi> <mi>r</mi> <mi>t</mi> </mrow> </msub> <mo>&amp;le;</mo> <mi>t</mi> <mo>&amp;le;</mo> <msub> <mi>t</mi> <mrow> <mi>e</mi> <mi>n</mi> <mi>d</mi> </mrow> </msub> </mrow> </mtd> </mtr> <mtr> <mtd> <mrow> <msub> <mi>a</mi> <mn>3</mn> </msub> <mo>=</mo> <mn>1</mn> <mo>,</mo> <msub> <mi>a</mi> <mn>4</mn> </msub> <mo>=</mo> <mn>0</mn> </mrow> </mtd> <mtd> <mrow> <mi>t</mi> <mo>&lt;</mo> <msub> <mi>t</mi> <mrow> <mi>s</mi> <mi>t</mi> <mi>a</mi> <mi>r</mi> <mi>t</mi> </mrow> </msub> </mrow> </mtd> </mtr> <mtr> <mtd> <mrow> <msub> <mi>a</mi> <mn>3</mn> </msub> <mo>=</mo> <mn>0</mn> <mo>,</mo> <msub> <mi>a</mi> <mn>4</mn> </msub> <mo>=</mo> <mn>1</mn> </mrow> </mtd> <mtd> <mrow> <mi>t</mi> <mo>&gt;</mo> <msub> <mi>t</mi> <mrow> <mi>e</mi> <mi>n</mi> <mi>d</mi> </mrow> </msub> </mrow> </mtd> </mtr> <mtr> <mtd> <mrow> <msub> <mi>t</mi> <mrow> <mi>t</mi> <mi>r</mi> <mi>a</mi> <mi>n</mi> <mi>s</mi> </mrow> </msub> <mo>=</mo> <msub> <mi>t</mi> <mrow> <mi>e</mi> <mi>n</mi> <mi>d</mi> </mrow> </msub> <mo>-</mo> <msub> <mi>t</mi> <mrow> <mi>s</mi> <mi>t</mi> <mi>a</mi> <mi>r</mi> <mi>t</mi> </mrow> </msub> </mrow> </mtd> <mtd> <mrow></mrow> </mtd> </mtr> </mtable> </mfenced>
    Wherein, S represents the whole sound clip for including transition stage, S1Represent the sound clip first played, S2Played after expression Sound clip, tstartThe sound clip for representing first to play starts the time exited, tendThe sound clip played after expression complete into The time entered, ttransRepresent transit time, a3And a4Represent gain coefficient.
  7. 7. it is used for the multi-channel sound real time integrating method of simulator flight as claimed in claim 5, it is characterised in that described Whether playing in sound clip play parameter is judged to belong to which mission phase and then which is determined by current flight parameter Sound clip plays；Broadcast mode includes loop play and single play, and the stable state sound clip is used for loop play, described Transient state sound clip is used for single play；Location parameter is expressed as the position coordinates of corresponding each sound clip actual play, institute State position coordinates and use driver's cabin sound test point as origin, along airplane pitch axis to the right, vertically upward, Z axis is along aircraft for Y-axis for X-axis The coordinate under coordinate system after Y.
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