CN101203071A - Stereophonic sound control apparatus and stereophonic sound control method - Google Patents
Stereophonic sound control apparatus and stereophonic sound control method Download PDFInfo
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- CN101203071A CN101203071A CNA2007101886772A CN200710188677A CN101203071A CN 101203071 A CN101203071 A CN 101203071A CN A2007101886772 A CNA2007101886772 A CN A2007101886772A CN 200710188677 A CN200710188677 A CN 200710188677A CN 101203071 A CN101203071 A CN 101203071A
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Abstract
The invention provides a stereo sound control device and a stereo sound control method. The stereo sound control is characterized in that a control unit 6 acquires the position data indicting the position of the device main body from a sensor unit 11 and the accelerated data from the sensor unit 1 so as to appoint the azimuth angle of the main body along the front direction; then the control unit calculates the distance data and the direction data relative to a preset or an appointed position according to the azimuth angle data and the position data, and then outputs the data as the sound positioning data; based on the sound positioning data, a processing unit 7 processes the stereo sound of the digital audio data and generates directional digital audio data; and a converting unit 8 converts the digital audio data into analog audio data and drives a loud speaker 9 and 10 to release the stereo sound. As a result, the invention can provide a sound mode which can be understood easily by receiving and provide the directional indication to the receiver.
Description
Technical field
The present invention relates to be used for auto-navigation system for example or comprise stereo (stereophonic) the sound control appliance and the stereo sound control method of the mobile phone of navigation feature.
Background technology
Traditionally, auto-navigation system and mobile phone with navigation feature are used to the independently available devices of user-provided location data.Usually, GPS (global positioning system) receiver is installed on these equipment, and the position data that will use gps receiver to obtain is presented on the display unit.Further, because outside gps receiver, also degree of will speed up transducer is installed on the auto-navigation system especially, so the use acceleration transducer obtains bearing data and together is presented on the display unit with position data.
Also have such equipment, it not only has the function of Visual Display position or direction but also has position or direction are notified to user's function in the mode of can listening.
On the other hand, exist only near user's ear, to produce sound and sound is not the process of scattering (seeing for example patent documentation 1) in all directions.In patent documentation 1, disclosed technology is such: based on the size of the user's who uses camera face, distance between measurement portable terminal and user's the face, and will from memory, read and specify the filter that is used for the stereo sound processor apart from corresponding filter coefficient with this.According to this technology, the audiovideo based on producing by the sound wave that the right side and left speaker discharge is positioned on the position corresponding with user's face.Therefore, by right and sound wave that left speaker discharges in face's convergence of user and do not spread widely.
Patent documentation 1:JP-A-2006-157558
Yet, problem below existing in the conventional art of Miao Shuing in the above.
(a) for the equipment of position of appearing data on display unit screen and since for this purpose with position display on screen, so the demonstration of position may show common the existence with other, and in this case, will be difficult to the demonstration of recognizing site.
(b) for using audio frequency to come the provider to the equipment that guides (guidance), when reading such as right, a left side, direction upper and lower, identification intuitively is affected.Further, come the provider to guiding and strengthening identification directly perceived, on all directions of 360 degree, need many loud speakers in order to use audio frequency.Therefore, the size of equipment can increase and the cost rising.
(c) by using stereo sound to provide the equipment of audio frequency directive property in all directions of 360 degree, to produce pseudo-sound by only using two loud speakers.Yet its present purposes only is to make that sound is heard more easily, rather than easily the provider to indication (be used for guiding, identification, warning).
Summary of the invention
In order to solve these defectives, an object of the present invention is to provide stereo sound control appliance and the stereo sound control method that easily to send the audio frequency indication that is used for direction at low cost.
This purpose is to realize by following configuration or method.
(1) the stereo sound control appliance comprises:
The voice data acquiring unit is used to obtain voice data;
The position data acquiring unit is used to obtain position data;
Controller, be used for using change by the position data that obtains at the position data capture unit, come the azimuth (azimuth) of designated equipment main body, be indicated to the range data and the bearing data of the distance and the direction of precalculated position or given position to adopt bearing data and position data to obtain, and export these data as being used for the localization of sound data; With
Processor, the stereo sound that is used to use locator data to carry out the voice data that is obtained at the voice data acquiring unit is handled.
According to this configuration, because use bearing data and position data obtain range data and bearing data at precalculated position or given position, and, indicate so can from vision data, send discretely at the audio frequency of direction because these data are exported as the sound localization data.
(2) also comprise at the stereo sound control appliance described in (1):
Acceleration detector is used for sense acceleration,
Wherein, controller obtains to have moved or mobile azimuth along it from the acceleration information of acceleration detector and definite equipment body, use this bearing data by performed definite acquisition and the range data and the bearing data of the position data distance and the direction that obtain to be indicated to precalculated position or given position, and export these data as the sound localization data.
Arrange according to this, owing to from acceleration detector, obtaining acceleration information and definite equipment body along its azimuth of having moved or having moved, so can obtain bearing data accurately.
(3) comprise at the stereo sound control appliance described in (1) and be used for the position detector of detection side to orientation (directionalbearing),
Wherein, controller obtains bearing data to determine the azimuth of equipment body along its face forward from position detector, use is obtained range data and bearing data with respect to precalculated position or given position by the bearing data that determine to obtain and position data, and exports these data as the sound localization data.
According to this layout, owing to use the position detector such as earth magnetism (geomagnetic) transducer or horizon sensor to obtain bearing data, and because equipment body along its azimuth in the face of the place ahead, needn't be prepared acceleration detector so can obtain bearing data.
(4) comprise at the stereo sound control appliance described in (3):
Gesture detector is used to detect attitude,
Wherein, controller based on obtain from gesture detector, the indication equipment main body is with respect to the attitude data orientation data of the attitude of earth surface.
Arrange according to this, when the portable terminal that applies the present invention to such as mobile phone, can obtain the attitude of mobile terminal user, and because based on attitude data orientation data, so can improve the accuracy of bearing data.
(5) also comprise at (1) described stereo sound control appliance:
Blind-spot detector is used to detect blind spot,
Wherein, controller obtains to be indicated to range data and the bearing data by the distance and the direction of the detected object of blind-spot detector, and exports these data as the sound localization data.
According to this layout, when applying the present invention to auto-navigation system, can detect such as the back of vehicle or the blind spot the side, and can improve fail safe.Further, as the example blind-spot detector, there is human body to have detecting sensor (human presence detection sensor).
(6) a kind of stereo sound control appliance comprises:
Input unit is used to import the data that comprise at the voice data of a plurality of sound channels;
Controller is used for obtaining predetermined or given position data at each indicated sound channel of data of using the input unit input, and calculates range data and bearing data, and exports these data as the sound localization data; With
Processor, the locator data that is used for based on controller output is that voice data is carried out the stereo sound processing.
According to this layout, at each sound channel obtain range data and bearing data and with these data as the sound localization data, and be that voice data is carried out stereo sound and handled based on locator data.Therefore, when a plurality of different sound of input, each sound can easily be discerned and can be heard and can not be obscured.
(7) at the stereo sound control appliance described in (6), the voice data of input unit along identical sound channel input used in controller identification, obtain not only at channel data but also being scheduled to or the given position data at identification data, calculate range data and bearing data, and export these data as the sound localization data.
Arrange according to this, can obtain to add locator data to wherein speech at each identifier.
(8) at the stereo sound control appliance described in (6), input unit transmits or receives radio wave, and controller uses the received radio wave line of propagation intensity of input unit to discern the direction in radio transmitting source and obtain bearing data, and the outbound course data are as the sound localization data.
Arrange according to this, can present the orientation in radio transmitting source, and when the radio intensity of wave that the transmission source is exported multiply by volume, can also roughly present distance.
(9) at the stereo sound control appliance described in one of (1) to (8), also comprise selector,
Wherein, selector determines whether that carry out stereo sound at the voice data that is obtained by the voice data acquiring unit handles.
According to this layout, can select whether should carry out stereo sound and handle.
(10) basis is at the stereo sound control appliance described in (9), and selector service range data are carried out described definite.
According to this layout, can determine whether carry out stereo sound based on range data and handle.
(11) at the stereo sound control appliance described in (1) to one of (10), processor equals at range data indication distance wherein or the situation that is shorter than preset distance is carried out stereo sound and handled.
Arrange according to this, can be only equal or the situation that is shorter than preset distance is carried out stereo sound and handled at range data indication distance wherein.
(12) for arriving the stereo sound control appliance described in one of (10) in (1), processor is only at the wherein situation execution stereo sound processing of range data indication distance in predetermined distance range.
According to the present invention, can be only at the wherein situation execution stereo sound processing of range data indication distance in preset range.
(13) also comprise display unit at the stereo sound control appliance described in (1) to one of (12),
Wherein, controller user bit data presents so that screen to be provided on display unit.
Arrange according to this, can not only use audio frequency but also use display to send indication direction.
(14) stereo sound equipment comprises:
At least two loud speakers;
The voice data acquiring unit is used to obtain voice data;
The position data acquiring unit is used to obtain position data;
Controller, be used to use the variation of the position data that obtains by the position data acquiring unit to come the azimuth of designated equipment main body, be indicated to the range data and the bearing data of the distance and the direction of precalculated position or given position to use bearing data and position data to obtain, and be used to export these data as being used for the localization of sound data;
Processor, the voice data that is used to use definition of data to obtain at the voice data acquiring unit is carried out the stereo sound processing; With
Output unit is used for it having been carried out the voice data that stereo sound is handled by two loud speaker output processors.
According to this configuration, owing to produce voice data,, and can be heard and can not obscure so a plurality of alternative sounds of input can easily be discerned with the direction that offers each sound channel.Further, owing to can use minimum two loud speakers that stereo sound is provided, the cost increase that causes owing to introducing stereo sound equipment of the present invention can be minimized.
(15) also comprise at the stereo sound equipment described in (14):
Image pickup (pickup) unit is used to obtain the image of object,
Wherein, based on the image that uses image pickup units to import, the listener that controller identification is listened to sound by loud speaker obtains range data and the bearing data of indication listener with respect to the distance and the direction of equipment body, and exports these data as the sound localization data.
Arrange according to this, optimum stereo sound can be offered the listener who listens to by the sound of loud speaker output.
(16) at the stereo sound equipment described in (14) or (15), also comprise selector,
Wherein, selector determines whether that carry out stereo sound to the voice data that is obtained by the voice data acquiring unit handles.
According to this layout, can select whether should carry out stereo sound and handle.
(17) according to the stereo sound equipment described in (16), selector service range data are carried out definite.
According to this layout, can determine whether carry out stereo sound based on range data and handle.
(18) in (14) to the stereo sound equipment described in any one of (17), processor equals at range data indication distance wherein or the situation that is shorter than preset distance is carried out stereo sound and handled.
Arrange according to this, can be only equal or the situation that is shorter than preset distance is carried out stereo sound and handled at range data indication distance wherein.
(19) for arriving the stereo sound equipment described in one of (17) in (14), processor is only at the wherein situation execution stereo sound processing of range data indication distance in predetermined distance range.
According to the present invention, can be only at the wherein situation execution stereo sound processing of range data indication distance in the preset distance scope.
(20) also comprise display unit at the stereo sound equipment described in (14) to one of (19),
Wherein, controller uses locator data to provide screen to present on display unit.
Arrange according to this, not only can use audio frequency but also can use display to send indication for direction.
(21) a kind of stereo sound control method comprises:
The voice data obtaining step is used to obtain voice data;
The position data obtaining step is used to obtain position data;
The locator data obtaining step, be used for using the variation of the position data that is obtained in the position data acquisition step to come the azimuth of designated equipment main body, use bearing data and position data to obtain to be indicated to the range data and the bearing data of the distance and the direction of precalculated position or given position, and export these data as being used for the localization of sound data; With
Treatment step is used for using locator data to come to carry out stereo sound for the voice data that is obtained at the voice data obtaining step and handles.
According to this method, because use bearing data and position data obtain range data and bearing data at predetermined or given position, and, indicate so can send discretely at the audio frequency of direction with vision data owing to export these data as the sound localization data.Further, owing to can use minimum two loud speakers that stereo sound is provided, can minimize introducing the caused cost increase of stereo sound equipment of the present invention.
According to the present invention, handle the bearing data of preparing at speech by carrying out stereo sound, can provide audio frequency direction indication such as guide, identification and warning, that separate with vision data for the listener.
Description of drawings
Fig. 1 is the schematic block diagram that illustrates according to the configuration of the stereo sound equipment of first embodiment of the invention;
Fig. 2 is the block diagram that illustrates according to the detailed arrangement of the processing unit of the stereo sound equipment of first embodiment of the invention;
Fig. 3 illustrates as figure example position fixes (localization) data, be positioned at the represented coordinate information in " orientation, the elevation angle (elevation) and distance " at center by the listener;
Fig. 4 is the block diagram that illustrates according to the configuration of the stereo sound equipment of second embodiment of the invention;
Fig. 5 is the figure that is used to explain according to the function of the stereo sound equipment of second embodiment of the invention;
Fig. 6 is the block diagram that illustrates according to the detailed arrangement of the processing unit of the stereo sound equipment of second embodiment of the invention; With
Fig. 7 is the schematic block diagram that illustrates according to the configuration of the stereo sound equipment of third embodiment of the invention.
Specific embodiment
To describe the preferred embodiments of the present invention in detail with reference to the accompanying drawings.
(first embodiment)
Fig. 1 is the schematic block diagram that illustrates according to the configuration of the stereo sound equipment of first embodiment of the invention.When reference Fig. 1, stereo sound equipment of the present invention is wherein to have used auto-navigation system of the present invention, and it comprises sensor unit 1, camera input unit 2, map datum memory cell 3, digital audio-frequency data memory cell 4, display unit 5, control unit 6, processing unit 7, converting unit 8 and loud speaker 9 and 10.
The various piece of control unit 6 control appliances, and comprise CPU (CPU) (not shown), nonvolatile storage and the volatile memory such as the RAM that is used to the performed operation of CPU (random access memory) such as storage wherein is used to operate the ROM (read-only memory) of program of CPU.Control unit 6 is used to specify the position data of the position of equipment body from sensor unit 1 acquisition, obtain the map datum that the indication equipment main body is positioned at the center from map datum memory cell 3, obtain acceleration information to specify the azimuth (azimuth) of main body from sensor unit 1 along its face forward, use bearing data and position data are calculated range information and the directional information with respect to predetermined or given position, and export these information as being used for the localization of sound data.These locator datas are sent to processing unit 7.With locator data, will be stored in the digital audio-frequency data memory cell 4 and the digital audio-frequency data consistent with present case also is sent to processing unit 7.
And control unit 6 will receive the camera video data that comes from camera input unit 2 be converted to the video data that can be shown by display unit 5, and video data is sent to display unit 5.
As another processing, the image that control unit 6 can use camera input unit 2 to be caught is discerned the listener who listens to by the sound of loud speaker 9 and 10 outputs, and can obtain with respect to equipment body, listener positions and the azimuthal data of listener, to calculate range data and the bearing data that outputs to processing unit 7 as the sound localization data.
When processing unit 7 when control unit 6 receives sound localization data (range data and bearing data) and digital audio-frequency data, and when range data indication distance equals or is shorter than preset distance, processing unit 7 is carried out stereo sound based on received locator data to digital audio-frequency data and is handled, and result is sent to converting unit 8.Range data indication distance equals or is shorter than outside the situation of preset distance therein, can also carry out stereo sound at the situation that range data indication wherein drops on the distance in the preset range and handle.Alternatively, can remove these restrictions.
Fig. 2 is the block diagram that the detailed arrangement of processing unit 7 is shown.When reference Fig. 2, processor unit 7 comprises: filter coefficient storage 71, wherein store a plurality of filter coefficients; With control filters 72L and the 72R at a left side and R channel, they use the filter coefficient that is associated with bearing data (bearing data), and control receives the phase place of the digital audio-frequency data that comes from digital audio-frequency data memory cell 4.
In filter coefficient storage 71, filter coefficient is stored in the table related with bearing data, and the output filter coefficient related with bearing data.The filter coefficient that to read from this table is sent to control filters 72L and 72R.In this case, the filter coefficient that will be used for sound channel L is sent to the control filters 72L that is used for sound channel L, and the filter coefficient that will be used for sound channel R is sent to the control filters 72R that is used for R.
As shown in Figure 3, the locator data that is input to filter coefficient storage 71 is positioned at the coordinate data of center " orientation, the elevation angle and distance " expression by the listener.Read the filter coefficient that is associated with locator data from filter coefficient storage 71, and send it to control filters 72L and 72R.Should be noted that filter coefficient is being stored in the filter coefficient storage 71 in advance and is transferring them to outside control filters 72L and the 72R that the user can directly be input to value control filters 72L and 72R.By this way, processing unit 7 positions and exports stereo, digital audio-frequency data based on locator data to monophonic, digital audio-frequency data.
Converting unit 8 comprises the D/A converter (not shown), will be converted to simulated audio signal from the digital audio-frequency data that processing unit 7 receives, and drives loud speaker 9 and 10. Loud speaker 9 and 10 is arranged as the acquisition stereophonic effect.
The operation of the stereo sound equipment of above-mentioned layout will be described now.Control unit 6 obtains position data and angle-data from sensor unit 1.Then, control unit 6 use angle data determine that equipment body has moved or along its azimuth of moving along it, and use the bearing data and the position data that obtain by determining, and calculate range data and bearing data, and these data are outputed to processing unit 7 as the sound directional data with respect to precalculated position or given position.And control unit 6 reads digital audio-frequency data at present case the best from digital audio-frequency data memory cell 4, such as guide or the identification or the warning of direction, and this voice data is sent to processing unit 7.
When processing unit 7 when control unit 6 receives locator datas and correlated digital voice data, processing unit 7 is carried out the stereo sound that is used for digital audio-frequency data based on locator data and is handled, and the result is sent to converting unit 8.That is to say, processing unit 7 is read filter coefficient from filter coefficient storage 71 explicitly with the locator data of the coordinate system that " orientation, the elevation angle and the distance " of using the listener to be arranged in the center represented, and filter coefficient is sent to control filters 72L and 72R.In this case, the filter coefficient of sound channel L is sent to the control filters 72L of sound channel L, simultaneously the filter coefficient of sound channel R is sent to the control filters 72R of sound channel R.
Then, the phase place that control filters 72L uses the filter coefficient of sound channel L to come the control figure voice data, and the phase place that control filters 72R uses the filter coefficient of sound channel R to come the control figure voice data.Afterwards, will carry out the sound channel L of phase control and the digital audio-frequency data of sound channel R is sent to converting unit 8 as stereo digital audio-frequency data to it.Converting unit 8 will receive the stereo digital audio-frequency data that comes from processing unit 7 and be converted to analog audio data, and drive loud speaker 9 and 10.Therefore, discharge stereo sound by loud speaker 9 and 10.Because stereo sound has directivity,, be alternative in the use display so can enable the indication of audio frequency direction.Should be noted that the listener is the driver naturally because the stereo sound equipment of present embodiment is to have used auto-navigation system of the present invention.
As mentioned above, according to the stereo sound equipment of this embodiment, obtain acceleration information, and definite equipment body is along its azimuth of having moved or having moved by the sensor unit 1 that can obtain position data and sense acceleration.Then, use bearing data and position data by described definite acquisition, and calculate range data and bearing data with respect to predetermined or given position, and when these data are used as locator data, carry out stereo sound at digital audio-frequency data and handle the digital audio-frequency data that has directivity with generation.Then, the digital audio-frequency data that is produced is converted to analog audio data, and drives two loud speakers 9 and 10 and export stereo sound.Handle by this, do not use the visual form that must read, but can use audio form that the direction indication of listener with fast understanding (guide, discern or warning) is provided from the screen of display unit 5.Owing to can be included in the voice data, not only provide to a left side or right so direction is indicated, but in all directions, provide especially by the information that the execution stereo sound is handled 360 directions of spending.In addition, owing to can indicate for example distance, so user (listener) can be sometime only by listening to the necessary information that obtains along direction.And, owing to only need minimum two loud speakers, introduce the caused cost increase of stereo sound equipment of the present invention so can minimize.
Along band ground, the orthodox car navigation system only uses display and speech provider to indication, thereby in the situation of the guide that the far-end that for example will be emitted in the street turns left, on display, present and turn and, and provide speech " far-end left-hand rotation " in the street by loud speaker to the distance at turning.Subsequently, the driver must watch display to obtain about turning and to the details of the distance of turning; Yet, since must be almost visual confirmation actual traffic condition side by side, so the driver may only time watches part turning information or not freely watches turning information, and miss turning.On the other hand,, do not need visual confirmation basically according to the present invention, thus need the considerably less time or when not required between the information of coming on top of to be provided, and the situation that driver does not wherein obtain enough information does not take place.
In this embodiment, obtain acceleration information and determine the azimuth.Yet, because the temporary variations in can the position-based data roughly determines the azimuth, so essential need be in sensor unit 1 included acceleration transducer.Yet when the data of use location, handle below carrying out.Control unit 6 comes the azimuth of designated equipment main body based on the variation in the position data that is obtained by sensor unit 1, azimuth that use is obtained by sensor unit 1 and position data are calculated range data and the bearing data with respect to predetermined or given position, and when these data are used as the sound localization data, carry out at the stereo sound of the digital audio-frequency data that obtains from digital audio-frequency data memory cell 4 and handle.
Further, it is azimuthal definite to use the aspect sensor (position detector (not shown)) that detects vehicle heading to carry out.That is to say that control unit 6 obtains bearing data from aspect sensor, and definite equipment body is along the azimuth of its face forward.Then, based on bearing data and position data by described definite acquisition, range data and bearing data that control unit 6 calculates with respect to predetermined or given position, and when these data are used as the sound localization data, carry out at the stereo sound of the digital audio-frequency data that obtains from digital audio-frequency data memory cell 4 and handle.Further, can increase the accuracy of bearing data by the gesture detector (not shown) of use such as geomagnetic sensor or horizon sensor.That is to say that control unit 6 obtains the attitude data of indicating equipment main body with respect to the attitude of earth surface from attitude detecting sensor, and come the orientation data based on the attitude data that is obtained.
Further, in this embodiment, sensor unit 1 obtains position data and acceleration information.The transducer (blind-spot detector (not shown)) that has the people in the rear or the side of vehicle will be additional when being installed on the sensor unit 1 when being used to detect, and can detect the people's who exists in the rear or the side of vehicle position.When the vehicle that this layout is applied to such as automobile, be released in rear view of vehicle or people's audio-alert is arranged in other positions that risk of collision is arranged by loud speaker 9 and 10, to cause the attention of driver to this direction.In this case, control unit 6 obtains to exist with respect to the people range data and the bearing data of the existence of people that transducer catches or object, and these data are sent to processing unit 7 as the sound localization data.When the unit of additional rear that is provided for monitor vehicle and side, different with the vision situation, reception information and needn't noting especially.Therefore, increased the speed of identification, and guaranteed safe driving.
Exist detecting sensor to obtain outside people's the position the end user, can obtain the opposing party's that the user conversing by phone position data by GPS.Use this position data, can be from the output of the position on the occupied call screen of the opposing party's image speech.If the people's physical presence just as the opposing party then felt in the side's that the sound of being heard this moment is the user to be conversed with it speech.
And in this embodiment, the present invention is applied to auto-navigation system; Yet, when the portable terminal that applies the present invention to such as mobile phone, also can obtain identical effect.In this case, be alternative in acceleration transducer, geomagnetic sensor or horizon sensor can be used as sensor unit 1.Yet, because the attitude of portable terminal continues variation according to the angle that the user holds this portable terminal, thus can use camera input unit 2 to calculate the attitude of portable terminal with respect to earth surface, and based on this result, can the orientation data.
And, for the correlation circumstance that obtains portable terminal and people, suppose to exist such condition, for example, during people's face should continue to point to portable terminal, extract face feature by image processing, and, can roughly obtain the attitude of portable terminal with respect to the people based on the location and the size of eyes.As long as can obtain this attitude data, then can use attitude data to proofread and correct the position data of portable terminal, and enable to command people's framing instruction in screen center.Yet, if use condition that people for example should correctly stand as prerequisite, must degree of will speed up transducer or horizon sensor be installed on the portable terminal, to proofread and correct the direction orientation under the situation that does not satisfy this condition exactly.Certainly, though providing of transducer is arbitrarily,, should use suitable transducer no matter for portable terminal or auto-navigation system.
In addition, two loud speakers have been prepared, i.e. loud speaker 9 and loud speaker 10 at this embodiment.Yet the quantity of loud speaker is not limited to two, obtains stereophonic effect and can use more than two.Yet, because many loud speakers increase manufacturing cost, so should consider to this.
And, in the present embodiment, do not comprise optional function, handle thereby be used for selecting to use this function to carry out stereo sound arbitrarily at the voice data of digital audio-frequency data memory cell 4 and control unit 6 acquisitions.Yet, can whether use the optional function of this function to be provided at the menu screen or the system that are used to begin to navigate selection screen is set.Perhaps alternatively, can the artificially or automatically select this function based on range data.
And, in this embodiment, use lateral angle (transverse angle) and volume and frequency characteristic to represent the sensation of distance; Yet, can use the elevation angle (elevation angle).
(second embodiment)
Fig. 4 is the schematic block diagram that illustrates according to the stereo sound equipment of second embodiment of the invention.When reference Fig. 4, be portable terminal such as using mobile phone of the present invention at the stereo sound equipment of this embodiment.Outside the configuration and function identical with first embodiment, this stereo sound equipment also comprises the input unit (input unit) 11 that a plurality of sound channels is received the data that comprise voice data by line needle.In order to use grouping to communicate with time division way, each grouping comprises " identifier " and " voice data " that be associated.Control unit 6 is for the predetermined or given position data of obtaining each sound channel by the data of input unit 11 inputs, and calculating range data and bearing data.Then, control unit 6 is exported these data as the sound localization data.And, control unit 6 identifications are by the voice data of input unit 11 via identical sound channel input, obtain not only to be scheduled to or given position data, calculate range data and bearing data, and export these data as the sound localization data at channel data but also at identification data.Therefore, can obtain to use the sound of stereo data generation for each identifier.That is to say, discharge speech, simultaneously the multiplexing different directions that is used for each identifier.Therefore, the listener can discern a plurality of sound and they do not obscured basically.
Can use data multiplex direction bearing data at input unit 11 inputs.Further, can and change these data by the switch character data and produce speech.And, bearing data can be presented on the display unit 5, provide from identification data details that obtain, such as student name and student's class thereby can add, so that identification is individual more easily.Figure 5 illustrates this state.In Fig. 5, the speech of multiplexing speaker A, B and C, and send the numerical data that is obtained to portable terminal 15 as radio wave.Input unit 11 receives these radio waves, and because numerical data is used as grouping transmits, so be the data that are used for each speaker with data separating.Suppose left position data is offered speaker A, to go up position data and offer speaker B, and right position data is offered speaker C, carrying out stereo sound at the sound that separates handles, thereby the speech of speaker A is positioned at the left side, the speech of speaker B is positioned at the top, and the speech of speaker C is positioned at the right side.And processing unit 7A provides demonstration based on the locator data at individuality.As a result, as shown in Figure 5, the image of speaker A is presented at the zone, lower-left of the screen of display unit 5, and the image of speaker B is presented at place in the middle of the top, and the image of speaker C is presented at lower right area.
In filter coefficient storage 71A, at each speaker with in the table that filter coefficient is stored in locator data is associated, and with input locator data output filter coefficient as one man.In the present embodiment, owing to exist three speaker A, so output needle is to the filter coefficient of the sound channel L of speaker A and R, at the filter coefficient of the sound channel L of speaker B and R with at the sound channel L of speaker C and the filter coefficient of R to C.In the filter coefficient of from filter coefficient storage 71A, exporting at sound channel L and R, the filter coefficient at sound channel L and R that will be associated with speaker A is sent to first control filters 72AL and the 72AR, the filter coefficient at sound channel L and R that will be associated with speaker B is sent to second control filters 72AL and the 72AR, and the filter coefficient at sound channel L and R that will be associated with speaker C is sent to the 3rd control filters 72AL and 72AR.
Each control filters 72AL and 72AR use from the filter coefficient of filter coefficient storage 71A and control phase place at each speaker's input digit voice data.The digital audio-frequency data that enters processing unit 7A is not stereosonic, and Be Controlled filter 72AL is adjusted to the phase place of sound channel L and the phase place that Be Controlled filter 72AR is adjusted to sound channel R.As before with reference to Fig. 3 described, the locator data that is sent to filter coefficient storage 71A is positioned at the represented coordinate data in center " orientation, the elevation angle and distance " by the listener.Not only filter coefficient is stored in advance filter coefficient storage 71A and is sent to control filters 72AL and 72AR, and the user can also direct input value.
Adder 73AL will be at output addition and the output result of the control filters 72AL of sound channel L, and adder 73AR will be at output addition and the output result of the control filters 72AR of sound channel R.By this way, based on the locator data at individuality, processing unit 7A carries out and is used for the localization process of monophonic digital audio-frequency data, and exports stereo digital audio-frequency data.
Referring again to Fig. 4, according to position data independently, control unit 6 is presented at data on the display unit 5 as identifier.For example, for video telephone, control unit 6 is presented at appointed positions with view data.Should be noted that the user can use display unit 5 manually to import bearing data at each identifier.For example, when watching display, the user is positioned at any display position with identifier.Therefore, can come provider's bit data according to the method that the user likes.
And, there is such situation, wherein the voice data at input unit 11 inputs does not comprise identifier, and only is the multiplex data that has been added sound.This sample data is the data that obtain when using single microphone to collect a plurality of speakers' speech in video conference.Suppose to transmit this voice data, then control unit 6 comes audio data by carrying out speech recognition, and produces bearing data.By this processing, can be with pseudo-mode (pseudo manner) identification speech.As mentioned above, and use portable terminal, can reproduce speech just looks like that individual physical presence is the same.
Should be noted that sensor unit 1, digital audio-frequency data memory cell 4, control unit 6, processing unit 7A, converting unit 8 and input unit 11 constitute the stereo sound control appliance.
According to the stereo sound equipment of present embodiment,, carry out the stereo sound processing at the voice data of respectively organizing that is provided with identifier, and produce voice data with directivity based on bearing data.Therefore, the listener can discern multiple sound and they do not obscured.Therefore, when the user simultaneously by phone when speaking in many ways, the user can hear the voice in the each side of diverse location, and can discern these voice and do not feel confused.
(the 3rd embodiment)
Fig. 7 is the schematic block diagram that illustrates according to the stereo sound equipment of third embodiment of the invention.When reference Fig. 7, the stereo sound equipment of present embodiment is the portable terminal such as the mobile phone of the present invention being used on it.Outside the configuration and function corresponding with first embodiment, this stereo sound equipment comprises input unit 12, and it has by the function of radio from the external retrieval numerical data, promptly is used to receive the function of the radio wave that sends from radio transmission source.
Every special time period, control unit 6 receives radio state and the digital audio-frequency data that is received by input unit 12, and the record radio state.Then, control unit 6 uses the attitude of radio state and portable terminal to change to determine radio strength and orientation, promptly determines received radio wave line of propagation intensity.After this, based on direction intensity, control unit 6 obtains direction and the calculated direction data that radio transmits the source, and the outbound course data are as the sound directional data.Should be noted that input unit 12 can comprise transmitting function, oppositely transmit to read radio reception intensity thereby will detect radio wave.
Should be noted that sensor unit 1, digital audio-frequency data memory cell 4, control unit 6, processing unit 7 (perhaps 7A), converting unit 8 and input unit 11 constitute the stereo sound control appliance.
As mentioned above, stereo sound equipment according to this embodiment, every special time period all receives the radio wave (numerical data) that transmit in radio transmission source, and changes to determine received radio wave line of propagation intensity by the attitude of reference portable terminal.Therefore, radio can be transmitted the orientation in source and present to the user, and when the receiving intensity that radio is transmitted the source multiply by the source volume, can present distance roughly.
In this embodiment and first embodiment, treated one group of voice data.Yet, as in a second embodiment, can handle many group voice datas.In this case, use processing unit 7A.
The invention provides following effect. When carrying out the stereo sound processing for particular voice, can be easy Ground is followed the tracks of or the identification direction, perhaps can obtain useful data such as warning as additional information. The mobile phone that can apply the present invention to auto-navigation system or have navigation feature.
Claims (21)
1. a stereo sound control appliance comprises:
The voice data acquiring unit is used to obtain voice data;
The position data acquiring unit is used to obtain position data;
Controller, be used to use the change of the position data that obtains by the position data acquiring unit, come the azimuth of designated equipment main body, be indicated to the range data and the bearing data of the distance and the direction of precalculated position or given position to adopt bearing data and position data to obtain, and export these data as being used for the localization of sound data; With
Processor, the stereo sound that is used to use locator data to carry out the voice data that is obtained at the voice data acquiring unit is handled.
2. stereo sound control appliance according to claim 1 also comprises:
Acceleration detector is used for sense acceleration,
Wherein, controller obtains to have moved or mobile azimuth along it from the acceleration information of acceleration detector and definite equipment body, use this bearing data by performed definite acquisition and the range data and the bearing data of the position data distance and the direction that obtain to be indicated to precalculated position or given position, and export these data as the sound localization data.
3. stereo sound control appliance according to claim 1 also comprises:
Be used for the position detector of detection side to the orientation,
Wherein, controller obtains bearing data to determine that equipment body is along its azimuth of having moved or having moved from position detector, bearing data and the position data of use by described definite acquisition obtained range data and bearing data with respect to precalculated position or given position, and exports these data as the sound localization data.
4. stereo sound control appliance according to claim 3 also comprises:
Gesture detector is used to detect attitude,
Wherein, controller based on obtain from gesture detector, the indication equipment main body is with respect to the attitude data orientation data of the attitude of earth surface.
5. stereo sound control appliance according to claim 1 also comprises:
Blind-spot detector is used to detect blind spot,
Wherein, controller obtains to be indicated to range data and the bearing data by the distance and the direction of the detected object of blind-spot detector, and exports these data as the sound localization data.
6. stereo sound control appliance comprises:
Input unit is used to import the data that comprise at the voice data of a plurality of sound channels;
Controller is used for obtaining predetermined or given position data at each indicated sound channel of data of using the input unit input, and calculates range data and bearing data, and exports these data as the sound localization data; With
Processor, the locator data that is used for based on controller output is that voice data is carried out the stereo sound processing.
7. stereo sound control appliance according to claim 6, wherein, the voice data of input unit along identical sound channel input used in described controller identification, obtain not only at channel data but also being scheduled to or the given position data at identification data, calculate range data and bearing data, and export these data as the sound localization data.
8. stereo sound control appliance according to claim 6, wherein, described input unit transmits or receives radio wave, and controller uses the received radio wave line of propagation intensity of input unit to discern the direction in radio transmitting source and obtain bearing data, and the outbound course data are as the sound localization data.
9. stereo sound control appliance according to claim 1 also comprises selector,
Wherein, described selector determines whether that carry out stereo sound at the voice data that is obtained by the voice data acquiring unit handles.
10. stereo sound control appliance according to claim 9, wherein selector service range data are carried out described definite.
11. stereo sound control appliance according to claim 1, wherein processor equals at the indication of range data wherein distance or the situation that is shorter than preset distance is carried out stereo sound and handled.
12. stereo sound control appliance according to claim 1, wherein processor is only at the wherein situation execution stereo sound processing of range data indication distance in predetermined distance range.
13. stereo sound control appliance according to claim 1 also comprises display unit,
Wherein, controller user bit data presents so that screen to be provided on display unit.
14. a stereo sound equipment comprises:
At least two loud speakers;
The voice data acquiring unit is used to obtain voice data;
The position data acquiring unit is used to obtain position data;
Controller, be used to use the variation of the position data that obtains by the position data acquiring unit to come the azimuth of designated equipment main body, be indicated to the range data and the bearing data of the distance and the direction of precalculated position or given position to use bearing data and position data to obtain, and be used to export these data as being used for the localization of sound data;
Processor, the voice data that is used to use locator data to come to obtain at the voice data acquiring unit is carried out the stereo sound processing; With
Output unit is used for it having been carried out the voice data that stereo sound is handled by two loud speaker output processors.
15. stereo sound equipment according to claim 14 also comprises:
Image pickup units is used to obtain the image of object,
Wherein, based on the image that uses image pickup units to import, the listener that controller identification is listened to sound by loud speaker obtains range data and the bearing data of indication listener with respect to the distance and the direction of equipment body, and exports these data as the sound localization data.
16. stereo sound equipment according to claim 14 also comprises selector,
Wherein said selector determines whether that carry out stereo sound to the voice data that is obtained by the voice data acquiring unit handles.
17. stereo sound equipment according to claim 16, wherein said selector service range data are carried out definite.
18. stereo sound equipment according to claim 14, wherein said processor equal at the indication of range data wherein distance or the situation that is shorter than preset distance is carried out stereo sound and handled.
19. stereo sound equipment according to claim 14, wherein said processor are only at the wherein situation execution stereo sound processing of range data indication distance in predetermined distance range.
20. stereo sound equipment according to claim 14 also comprises display unit,
Wherein, described controller uses locator data to provide screen to present on display unit.
21. a stereo sound control method comprises:
The voice data obtaining step is used to obtain voice data;
The position data obtaining step is used to obtain position data;
The locator data obtaining step, be used for using the variation of the position data that is obtained in the position data acquisition step to come the azimuth of designated equipment main body, use bearing data and position data to obtain to be indicated to the range data and the bearing data of the distance and the direction of precalculated position or given position, and export these data as being used for the localization of sound data; With
Treatment step is used for using locator data to come to carry out stereo sound for the voice data that is obtained at the voice data obtaining step and handles.
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| JP2006315841 | 2006-11-22 | ||
| JP315841/06 | 2006-11-22 | ||
| JP266778/07 | 2007-10-12 |
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| CN101203071A true CN101203071A (en) | 2008-06-18 |
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| CNA2007101886772A Pending CN101203071A (en) | 2006-11-22 | 2007-11-21 | Stereophonic sound control apparatus and stereophonic sound control method |
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| CN (1) | CN101203071A (en) |
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