Patent Translate Powered by EPO and Google Notice This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate, complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or financial decisions, should not be based on machine-translation output. DESCRIPTION JPS5483801 Description 1, title of the invention Automatic sound image position control device 3. Detailed Description of the Invention The present invention relates to an automatic sound image position control apparatus by using a variable frequency oscillator and a counter. When converting a signal having no localization information into a signal having localization information, the output automatically localizes a sound image at a desired position in space, or automatically moves the sound image to an arbitrary position at a recumbent position, It is an object of the present invention to provide an automatic sound image position control device capable of accurately controlling the movement direction of the sound image and instructing the movement direction, speed, maximum movement position and the like of the sound image. A pinaural signal similar to a pinaural signal obtained by a pseudo head when a signal having no localization information (for example, a monaural signal, a signal for each multichannel channel, etc.) is present at a position where the sound source is to be localized A signal conversion device for converting into. Intended to localize the sound image at a distance r from this kind of 両 t (/ i, an angle θ from the center point between both ears of H loser (normally, the front direction of @follower is 00) In this case, the signal not providing localization information is given a damping characteristic according to the above nr, a frequency characteristic, and a delay time according to the above angle θ, and a frequency 'Pi characteristic so as to be listened to by the left ear By outputting a signal and a binaural signal to be listened to by the right ear, and having the listener listen, it is perceived that the sound image is localized at a distance r and a distance r. However, a sound image to be localized by the above signal conversion device, or a sound image to be moved by the localization position (a desired position in space by the output control signal of the sound image position control device, or The trajectory to be done is indicated. FIG. 1 shows a schematic 09-05-2019 1 side view of an example of a conventional sound image position control apparatus. In the figure, reference numeral 1 denotes a stick, one end 1a of which is rotatably supported, and the other end 1b draws a hemispherical trajectory by freely pivoting the stick 1 with the one end 1a as a fulcrum. A control signal representing the mapping position of the entire stick or one point thereof with respect to the horizontal plane 2 in the vertical direction perpendicular to the drawing of FIG. 1 of this stick 1 represents the horizontal plane 2 as an absolute position in twodimensional coordinates. It is obtained from the output of a variable resistor (not shown) whose resistance value changes in response to the movement of the stick 1 and is supplied to the abovementioned signal conversion device. Thus, the stick 1 designates the position of the sound image localized in space by the pinaural signal, or the movement locus of the sound image whose localization position is moved. FIG. 2 shows a schematic front view of another example of the conventional sound image position control apparatus. A volume 3 controls the position of the sound image by changing the volume level ratio generated by the left and right speakers (not shown) by turning. That is, this method is referred to as level difference localization, but when the volume 3 indicates the center position of C, the volume levels of the left and right speakers are both the same, and the sound image is localized at the center in advance. When the signal being sung is reproduced, the sound image is positioned at the center. Even in this case, as the volume 3 is turned counterclockwise in FIG. 2, the sound level of the left speaker is reduced. The sound is gradually moved to the left toward the listener, and the sound image position is gradually moved to the right as it rotates clockwise. The volume 3 can perform the one-dimensional sound image localization and the movement of the sound image localization position by the above-described level variable, and can also perform the one-dimensional five-image localization position display described above. The apparatus shown in FIG. 1 can also perform sound image localization, movement and display thereof by the level difference localization method. Therefore, in the conventional apparatus shown in FIG. 1, the imaging position of Stick-1- relative to horizontal plane 2 is represented as distance r from the origin in the two-dimensional coordinate of horizontal plane 2 and angle θ based on a certain direction EndPage: The distance from the origin to the infinity is divided by n (arbitrary integer), and the angle θ is also divided by m (arbitrary integer) into 3600 and the stick The position in space 1 was to be detected. Therefore, in order to move the sound image smoothly, it is necessary to take KVi and the above-mentioned number of divisions large, and therefore, the stick 1 is copied as the stick 1 approaches K perpendicular to the horizontal plane 2 (which becomes the origin position at this time). Less I! Even if the sound image does not move rapidly, it can not move because the sound image is moved by moving the stick 1 artificially. Met'. On the other hand, in the case of the conventional wearing shown in FIG. 2 as well as above, as the division number for the rotation angle must be taken as many as possible for smooth movement of the sound image, It was awkward to move tp 7k slightly to make it turn. In addition, the conventional devices Ijt shown in FIGS. 1 and 2 both manually control the on-the-fly status, so the operation is complicated. The non-invention eliminates the above-mentioned drawbacks and 09-05-2019 2 will be described with reference to FIG. □ FIG. 3 is a block diagram showing the basic configuration of the device of the present invention. In the same □□□, it is made to be variable by the control pulse of the wave number wax terminal 5 of the oscillation station wave number with four company variable frequency transmitters. The output signal of the variable frequency oscillator 4 is supplied to each of the gate circuit 6 and IK. The gate circuits 6 and 7 are controlled to open and close by means of the gate control which is input from the terminals 8 and 9. 10.11 are gate circuits 6. It is an up / down counter that counts or subtracts the input signal from T (the output signal of the variable frequency oscillator 4). The up / down counter 10 displays the distances from the origin O to infinity and large distances and each distance section where @ is previously divided and assigned n in binary numbers (here, for convenience, 5-bit binary data is used. ). That is, the R1 point O is DOO, O, DJ, the 14th distance section is 000 mouth 1 , the second distance section is 0 0 010, J,. When 31) / fi 11111 is displayed. Here, the origin a is taken as the central point between the listeners' ears. Also, the nth distance section is from a certain value to infinity. On the other hand, the angle θ based on the up / down counter 11 direction is displayed as a 5-bit binary number for convenience, and an angle of 360 ° is divided into m to display all the allocated angles. That is, since the up / down counter 11 displays the angle here as a 5-bit binary BCD, it represents an angle divided by 32 ° of 360 °. ・ For example, when 00, O [1000 J is displayed. The up / down counter 10 displays the distance r and outputs a digital 1 δ number corresponding to the display distance section as a control signal (rl) from the output terminal 12 and the rough up / down counter 11 outputs the angle θ And the digital 1 .delta. Number corresponding to the display angle as a control signal (.theta.,) And output from the blade terminal 13. As shown in FIG. And 2t indicate the localization position 4rlpθj) of the sound image represented by the polar acne. Next, one embodiment of the device of the present invention will be described. FIG. 4 shows a block system diagram of one embodiment of the device of the present invention, and in the figure, the same reference numerals as in FIG. 14. Is is a voltage controlled oscillator as an example of a variable frequency oscillator, and its oscillation frequency is variably controlled by a control voltage applied from terminals 18.17. The oscillation frequencies of the voltage control oscillators 14 and 15 correspond to the moving speed of the sound image. That is, by controlling each output oscillation frequency of the voltage control oscillator 14.15, the input clock to the up / down counter 1o, z changes, and the change rate of the distance and angle changes. In this case, the gate circuit 6.1 is controlled by the gate control signal from the terminal 8.9, but when any of the gate circuits 6, 7 is closed, the counting of the up / down counters 10, 11 Since the motion stops, the sound image does not move, is stationary, and is localized at a desired position in space. The up / down counters 10 and 11 are forcibly controlled to either the addition counting operation or the subtraction counting operation by the up / down control 09-05-2019 3 signal which is applied from the terminals f, 8 and III and EndPage: 3. The output signal of the up / down counter 10 is output as a digital control signal giving information on the distance from the origin of the sound image to be localized or moved from the output terminal 20, while the D / A converter 21 converts it into an analog signal. The signal is converted and output as an analog control signal that gives distance information from the origin of the output terminal 22 to the sound image. Also, while the output signal of the up / down counter 11 is output as a digital control signal giving information on the angle made with respect to a certain reference direction of the sound image to be localized or moved from the output terminal 23, the DA converter The signal is converted into an analog signal by an analog signal 24 and output from the output terminal 25 as an analog control signal which gives information on the angle between the sound image and a reference direction. The above output terminal 20. For example, the control signal giving distance information from '12 and the control signal giving angle information from upper 2 output terminals 23 and '25 are, for example, the above-mentioned signals. Control ΔP, Δφ of natural sound image localization f 'taking into account the correlation between the signal level difference (ΔP) and phase difference (Δφ) at the positions of the listener's both ears as described in the monthly issue It is also used as a control signal in the level difference localization method described above. In this way, a pinaural signal obtained by using a signal having no localization information as a control signal for converting a signal into a pinaural signal, or a control signal in a level difference localization method, etc. It is listened to by headphones, or the crosstalk component is canceled in advance and sound is generated from the speaker. Or, the localization or localization position is automatically moved into space in accordance with the distance between the sound and the output of the up / down counters 10 and 11 and the angle corresponding to the sound produced by the signal generated from the speaker. The sound image localization method by the ΔP-Δφ method described in the above NHK Giken monthly report, or the method of sounding a pinaural signal from a speaker to localize the sound image at a desired position in the sound field, is shown in FIG. The left ear entrance of the listener 26 when the listener + 26 hears that the sound image is localized at P (rtt θ j) within the sound field of the sound produced by the speakers 27, 28 ', 29' and 30 ' Volume level and phase at pL +? Assuming that the volume level and phase at the L right ear inlet are p and yR, respectively, the speaker 26 sounds such that the level difference ap (−pL−pn) and the phase difference d ψ (−, 5 / knee yR) are given to the listener 26 It is something to be pronounced from 27-30. The operation in the case where the localization position of the sound image is automatically stopped or moved using the output control signal of the device of the present invention as a control signal for converting into the above-mentioned pinaural signal will be described in more detail. FIG. 6 is a front view of the appearance of an embodiment of the device according to the present invention, in which the localization position of the first sound image is previously set by the preset button 31. When the start switch 32 is pressed, the circuits of FIG. 4 become operative. When 33 is an approach switch and 34 is a far switch and neither of them is pressed, the gate 09-05-2019 4 circuits 6, 7 in FIG. 4 are both closed, and the sound image is stopped at the preset position by the preset button 31. doing. When the access switch 33 is pressed, a signal for causing the up / down counter 10, for example, to count down is applied from the terminal 18, and at the same time the gate control signal from the terminal 8 opens the gate circuit 6, thereby the voltage controlled oscillator 14 The out-force signal begins to be decremented by the up-down counter 10. This allows the listener to hear that the sound image is approaching. On the other hand, when the remote switch 34'lr: is pressed, a signal for adding and counting the up / down counter 10 is applied from the terminal 18, and at the same time the gate circuit 6 is opened, thereby the output signal of the voltage control oscillator 14 Is started to be added and counted by the up / down counter 10, and the output control signal of the output terminal 20.22 is controlled to move the sound image far from the listener. 35 is a counterclockwise switch, 36 is a clockwise switch, and when EndPage pressed with these switches 35 or 36: 4, a signal for performing subtraction / addition counting operation of the up / down counter 11 from the terminal 19 Is applied to the up / down counter 11, and with this output control signal of the six output terminals 23. 25 (the sound image moves by 11 width counterclockwise or clockwise with respect to the listener). At this time, both of the proximity switch 33 and the far switch 34 are pressed. When it is not, the sound image continues to rotate leftward or rightward along a circular orbit of a certain radius centered on the listener (this radius is determined by the output of the up-down counter 10). On the other hand, when either the left turn switch 35 or the right turn switch 36 'is pressed, and when any one of the access switch 33 and the far switch 34 is pressed, it is determined from the above description. As is also apparent, the sound image draws a helical trajectory relative to the listener and either approaches or moves far. The movement speed of the above sound 1 wall changes the control voltage value applied to the voltage control oscillators 14 and 1.5 from the terminal 16.17 by moving the back and forth movement speed adjustment volume 37 three times, By varying the output oscillation frequency of the control oscillators 14, 15, it is variably adjusted arbitrarily. The higher the oscillation frequency, the faster the moving speed of the sound image. The movement of the sound image described above is stopped by closing the gate circuits 6, 7 by the gate control signal applied from the terminal 8.degree. 9 by pushing the stop switch 38, and is stopped by this, and the sound image is stopped at this stop position. become. Since the device according to the present invention does not manually control the localization position of the sound image as in the prior art but can automatically perform this, when moving the sound image, at least one of the division numbers for direction and distance It is easy to set a free localization position at any speed from a step (one division section) and at any position in the sound field. In FIG. 6, s'39's4 ◎ is the one-step switch of Utameme that moves the sound image in the approaching direction of the one step and the distant direction respectively, and the 41't 42 is in the left-turning direction, around 4 turns. Each is a one-step switch for moving a one-step sound image. Also, 41L and 41RFi, left channel switch and right channel switch for moving the sound image to the preset positions in the sound field of the left and right halves of 09-05-2019 5 the listener respectively, making this unnecessary by predetermining the circuit constants You can also. Although the start switch 32 is provided in FIG. 6, this switch does not necessarily need to be provided exclusively, and switches having other functions (for example, the proximity switch 33, the far switch 34, the counterclockwise switch 35 or the like) It can also be used as the clockwise switch 36). Further, in FIG. 4, when the digital control signal from the output terminal 20.23 is input to a computer, for example, the localization position of the sound image can be artificially controlled by the program. The analog control signal from the output terminal 22.25 is applied to, for example, the voltage control amplifier (vCA) in the signal converter described above. The above analog control signal and digital control signal do not necessarily have to be used at the same time, and it is of course possible to selectively use either of them depending on the type of subsequent circuit. Further, in the embodiment shown in FIG. 4, the moving speed of the sound image is varied by controlling the output oscillation frequency of the voltage control oscillator 14.15, but it is essential that the frequency is changed by the control signal. Anything can be used if it is. Further, the oscillation input signal to the up / down counters 10 and 11 is gate circuit 6. Although the configuration for passing or blocking by T has been described, the present invention is not limited to this method. For example, the oscillation operation of the voltage controlled oscillator ti or 15 is stopped or the counting operation of the up / down counters 10 and 11 is stopped. You may make it Furthermore, the output control signal of the device of the present invention has also been used as a control signal for changing the volume level ratio of the above-mentioned level difference localization method. As described above, in the automatic sound image position control apparatus according to the present invention, the output signal of the counting means obtained by counting the output signal of the oscillator in the counting means provided with the means controlled by the counting means EndPage: 5 of the distance information between the sound image position to be expected and the listener and the angle information with reference to a certain direction, and it has information of one side or the other, and the signal that does not have localization information Since the sound image is localized at the desired position in the sound field or output as a control signal for converting the sound image to the desired position, the localization position of the sound image is automatically shifted to an arbitrary position in the sound field. It can be moved or stopped, so that the operation is extremely simple compared to the conventional one, and since the electronic control is performed, the localization position of the sound image can be extremely accurately controlled as compared to the conventional one. Also, it is possible to set in advance a slight movement of the sound image position and a movement of a dog, and the program can control the sound image position artificially and also by the computer, and uses a variable frequency oscillator as the above oscillator and Since the means for changing the output oscillation frequency from the outside is provided, it is possible to automatically and accurately change the moving speed of the sound image moved to an arbitrary position in the sound field. It has several 4 features such as being able to indicate the direction, speed, final movement position, etc. 09-05-2019 6 4. Brief description of the drawings. FIG. 1 is a schematic side view of an example of a conventional automatic sound image position control apparatus, FIG. 2 is a schematic front view of another example of the conventional automatic sound image position control apparatus, and FIG. FIG. 4 is a block diagram showing a basic configuration of an embodiment of the invention device, FIG. 4 is a block diagram of an embodiment of the invention device, and FIG. 5 is for explaining the relationship between a listener and a sound image in a sound field. FIG. 6 is a front view of the appearance of an embodiment of the device of the present invention. 1 ... stick, 3 ... volume, 4 ... variable frequency oscillator, 10, 11 ... up-down counter, 12. . 20.22 ··· Control signal output terminal for giving distance information, 13, 23, 25 ··· Control signal output terminal for giving angle information, 16. 17. ··· Control voltage input terminal, 1'8. . 19 · · · · · · · down control signal input terminal, 33 · · · approach switch, 34 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · switch Volume. Patent applicant Nippon Victor Co., Ltd. \, Attorney Attorney Tadohiko Ito 'Fig.1 Fig.6 Fig.6 Fig.5 Fig.6 Fig.2EndPage: 6 09-05-2019 7
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