JPH08148U - Wide area sound enhancement device - Google Patents

Abstract

(57) [Abstract] [Objective] A wide area sound enhancement device The present invention relates to the field of sound enhancement of a fairly large space and area, in which the area of activity or performance and acceptance or the audience is the principle of duration. According to, they are directly adjacent to each other or are the same. Erroneous localization and jumping effects that occur when the sound source is moving can prevent it, especially when it is an important soloist sound source. The realization of the task to be posed, namely the realization of the required time grading without a limited sound source area and the consideration of the sound effects of the sound source, is tied to a delay device or a strong device, which is where the sound source and the sound are emitted. It is solved by one control device which is controlled differently according to the sound path between and. Examples are given for automation of control as well as configuration of equipment technology with low investment.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is particularly applicable to any large space or field (generally referred to as a viewing area hereinafter) and is to be understood as a theater area, a stage, a theater, an amphitheater, and the like, which are to be understood. A wide area acoustic enhancer for use in delivering sound from an acoustically provided act of providing and localizing to an area, where duplication of the two areas also occurs.

[0002]

[Prior art]

 Almost all known wide area acoustic enhancers can be related to three basic principles: The first and most commonly used principle is the central acoustic emission principle. One or several vowels with suitable directivity are mounted mainly in the playing area, above or in the middle of the edges.

Performance is consistently located at the nearest vocalist location from all locations in the viewing area. This principle cannot be applied to very large performance and / or viewing areas. In a large performance area, mispositioning becomes more and more prominent, and the possibility of false acoustic feedback increases.

Even if the directional characteristic of an extremely large viewing area is good, the difference between the sound level and the timbre distribution cannot be compensated. Also, a harmful time difference appears.

The second principle is the principle of concentrated exclusion acoustic divergence by voice generators distributed in the viewing area. In this case, various solutions have been proposed for mounting the vowel.

In the case of the audio device according to the first principle, from the addition of a slight voicing device to the disadvantageous part of the viewing area, to one earphone per audience seat Deformation is taking place, including application to elapsed time equilibrium.

This can reduce the possibility of false feedback. Disadvantages linked to this principle are the lack or error of sound source localization, especially in the majority of the viewing area.

The third principle takes advantage of the possibility of two- or multi-channel intensity-or phase stereophonic effects with pseudo-source formation or with positioning due to the regularity of the first sound surface. This principle is applied not only to radio stereophonic effects but also to talkie projection.

In the latter case, for optical reasons, in this case, there is already a distance from the vertical flat-shaped performance area to the viewing area and a small lateral expansion of the viewing area. Along with the expansion of the viewing area and the performance area, the technical burden will increase significantly, and the uncertainty of position mismeasurement or positioning will increase. The viewing area, which can be correctly positioned by the amplitude ratio or phase relationship, is generally significantly narrower than the spacing between the vowels.

Therefore, the intensity-to-phase stereophonic effect is not sufficient for a wide area acoustic enhancer, where the existing space should be optimized for both acting and viewing areas.

Based on these basic principles, a wide-area acoustic enhancement device has been known which has been positioned in some embodiments and has shown the best results in sound quality and spatial impression in the past (Higashi Unique No. 120341). . It has a microphone and a delay element subordinate to the performance area.

It is based on the division into several spatially limited acoustic regions. The sound source region signal parts (each based on a reference point within this sound source region) electrically delayed by more than the natural acoustic elapsed time in each case with respect to the uttering device position are added to the utterance device without reaction. Are summarized in.

[0013] Regarding the configuration of the change of the position of the moving sound source and the variable of the performance range, it is between the microphone and the delay element, and therefore, the position measurement can be performed more to any one of the sound source range through the change of the signal amplitude of the delay device. Consider using known switching or fade-over equipment.

As a means of increasing the stereoscopicity and clarity, there is provided another delay element and a voice speaker distributed in space, connected to it, the signals of which are linear in time and amplitude. It is continuously connected to the signal of the voice generator.

A disadvantage of this device is that when the source, which is usually relatively quiet, such as a speaker, singer or instrument appears individually or in small groups (hereinafter collectively referred to as a solo performer source). It was found that the positioning always deteriorates.

[0016] Solo performer sound sources of this type appear relatively often, and their performance is often very important. It is therefore disadvantageous in this solo actor sound source, which is often still moving, that position measurements are made in a totally diffuse, erroneous or sudden manner.

[0017]

[Problems to be solved by the device]

 The present invention aims to reduce the abovementioned drawbacks of the last-mentioned device without significantly increasing the expenditure or reducing the achieved advantages separately.

The analysis of the causes of technical defects and the study of the deformations of the equipment are due to It has been shown that the deficiencies of this device cannot be ruled out while maintaining all mainness, since the acoustic capacity of the sound source is left unconsidered.

Therefore, the present invention is based on the whole performance range including overlapping parts, and at least for solo performer sound sources, avoids spatially limited grid sections of the sound source range, and considers the sound capacity of the sound sources. In that case, the problem is to provide a large space acoustic device that realizes the necessary elapsed time grading.

According to the present invention, the object is to provide a device for adding and distributing reactionless differentials, which are arranged in the listening area and in the acting area, and are subordinate to them, to a solo performer. A microphone subordinate to the sound source is at least coupled to the controllable delay-or the amplification device, and the control input of the controllable delay-or amplification device is connected to the respective sound source position and vocoder position. The problem is solved by the fact that the acoustic path between and is coupled to a regulating or control facility for differential control, which is approximately proportional to the acoustic path.

[0021]

[Action]

 The main function of the acoustic device for a large space according to the present invention is that the sound field extending from the sound source over the performance range to the listening range is approximated temporally with temporal sound source priority, and as long as necessary. It is based on faithfully supporting or simulating the volume.

Temporal acoustic priority means that the voicing machine utters for the first time after passing through the wavefront of the original voicing source or of the voicing instrument that simulates it and closer to the voicing source. Understand that they are differentiated according to the type and capacity of.

While the control system is a step from amplitude or phase positioning to pure transit time localization within the source range grid, it is related to one of the audience and the spatial angle, the present invention The contradiction between time- and amplitude-positioning mutualities is eliminated even in the transition region where the first vowel, instead of the original sound source in the case of the control, is located in the transition region where the sound source, the performance range and the Take into account the sound source capacity in relation to the position of the speaker.

[0024] In this sense, it is also advantageous to add a position-changeable voice generator, preferably in the vicinity of the sound source of the solo performer, in addition to the voice generator fixed in the acting area and the viewing area.

At the input of the device for the reaction-free differential addition and distribution preceding them is a controllable delay-or amplification dependent on fixed and position-variable solo actor sound sources. The outputs of the device are applied and their control inputs additionally receive the coordinates of the position change of the positionally variable vowel, at least for stationary solo actor sound sources.

The control device advantageously comprises a sound source coupled to the comparison input of the comparison and control facility-or an input device for the microphone position, the control output of the comparison and control facility being controllable delay-. To the control input of the amplifier. Another combination of control outputs may be advantageous in various applications to a device for reaction-free differential addition and distribution.

The higher localization accuracy provided by the device according to the invention compared to the control device is certainly advantageous for solo actor sound sources in general, but disadvantageous for the acoustic impression of the closure of large acoustic bodies. In view of what may be shown, in an advantageous refinement of the invention both a coupling of both devices, as well as a delay device with controllable inputs of the devices for reaction-free differential addition and distribution are provided. Coupled to the one set invariably, the latter additionally has a reactionless differential pre-adder and distributor, which is dependent on the source, in front of these inputs. Is possible with a stationary microphone on.

In that case the elapsed time of the solo performer sound source—or level tuning—is the sum of the original sound or an alternative sound source simulating the original sound and a spatially spread sound source at the same position. This is done during the elapsed time or level of the signal.

Level tuning can be performed alternately or in combination with elapsed time tuning, depending on the inherent capacity of the sound source.

The application of the invention is particularly relevant for the transition region between the performance and viewing zones, both for the microphones and vocalizers attached to it and also for the sound source and the seated audience located there. is important. As the depth of the acting area and the viewing area increases, the conditions become severe.

For a particularly economical realization, in addition to the pre-addition of distant sound sources, a controllable delay-or amplification device and adjustment-or control equipment is provided in the transition region between the performance and viewing zones. Especially coupled with the installed voice and microphone, the voice installed in the viewing zone further away from them has a fixed or coarse stage in the reactionless differential summing device dependent on them. It is advantageous because it is related to the level and time provided.

Vocalizers of this kind mounted further in the viewing zone have already been considered in the contrasting device for improved stance and clarity, in which they are given the primary loudspeaker. An additional delay element is connected to the signals of the machine group for continuous time and amplitude connections.

Solo performer sound source Especially for distant voicing machines to incorporate a reproduction of a moving sound that should be simulated in a desired complex manner, and thus achieve various intelligibility, intelligibility or stereoscopic impression listening phenomena. The delay of the sound source remains invariably related to the difference in the position of the vocoder, but in the improvement of the present invention, not only the delay or amplification device of the sound source but also the echo generator can be prayed depending on the sound source position and the control device can be used. It is combined.

Depending on the selected simulation degree of the sound field, the energy ratios of various signals guided to a distant utterance machine are intelligibility C ₈₀ > 0 dB, intelligibility C ₅₀ > 0 dB to three-dimensional. Impression R> 0 dB is controlled so that it can be adjusted while maintaining the condition that the reverberation signal finally arrives at the listening position.

Another refinement of positioning is that additional vocalizers are almost at the source of the sound source, either in the performance range or in the transition range between the performance range and the viewing range, especially when a solo performer sound source and a large acoustic body are also considered. The differential adder and divider devices mounted and pre-mounted on them contain additional attenuation or additional delay at the pre-input ends of their other reactionless adders. Is achievable.

Adjustment for the control of the differential approximately proportional to the sound path in analog to the sound path-or in the simplest case the control facility is an operation representative of the microphone position in the performance range for adjusting the delay or amplification. It consists of a performance area imitation.

In a refinement of the invention, the adjustment or control equipment for the differential control approximately proportional to the acoustic path is provided with a measuring acoustic signal transmitter and a microphone for the microphone position in the performance range. Between acoustic source signals, which are electrically or optically transmitted over the acoustic path between, and are approximately coupled to a distance-based sound source position measuring device using It is especially advantageous for a movable solo actor sound source to directly and automatically perform control proportional to the path from changes in the microphone position in the performance area.

The imitation of the performance area-or the distance measuring device and the adjustment-or the control equipment are stored between the acoustics of the acoustic device-accompanied by the performance region or the technical parameters of the device. A calculation unit is inserted for converting the variable output parameters of the position measuring device into control values for controllable delay or amplification devices.

Delays and simple proportional and uniform changes in amplification, simultaneously or alternatingly, are often complicated without this unit of measure, the response to spatial relationships on the one hand and acoustic relationships on the other hand being simple. It can only be applied.

Positioning, especially in the case of simultaneous level-and time lag, depends on the vowel-and the source distance, and certainly follows a quite complex function which is not realizable at the cost of analog connection techniques. Is. In addition, this unit of calculation allows the signal portion of the sound source of the solo performer at the position of the utterer to be temporally incorporated between the original sound passing through and the signal portion of the large acoustic body. It is also possible to reduce the level difference that leads to concealment or forgery of the passage position.

Large-space audio systems have also provided the prerequisite for better avoidance of acoustic feedback with tuning and control equipment. The implication of false feedback is that in the improvement of the invention, even in the case of complex conditions, a delay device, which is subordinate to the solo actor sound source, is used to add a reactionless differential addition and distribution for an additional voice generator. In the output conductor to the device, it is preferably connected to a unit of calculation or to a position-measuring device for microphones and variable-position voicing machines via a position-matching device, which is part of it, and is connected to it. This can be reduced by inserting some controllable damping element and evaluating the position match against the memory value.

In addition to the major improvements and / or deformability of the present sound enhancement device, which have been given up to now, other improvements are possible in the sense of a qualitatively valuable and economical realization. Were made possible by the main points of the present invention.

A particularly cost-effective and qualitative justification for the arrangement of controllable delay-and / or amplification devices for a large number of channels is a mobile solo performer sound source or an alternative sound source simulating it. The input acoustic signal produced by the is applied to the inputs of at least two controllable amplifiers, the output of the latter being directly or via a controllable device for distribution. In addition to the sound source of the control device and the input device at the microphone position, there is also an operating device for level operation, and both output control signals are coupled via the multiplication control circuit. It lies in the control input conductor of the controllable amplifier.

The mentioned input device at the sound source-or microphone position then preferably consists of a switch arrangement, the primary contacts of which are at a common potential, and their secondary contacts are each OR = the input of the circuit. The output of the latter is connected to the first input of the AND circuit, while its second input receives the variable frequency time signature signal.

The output terminal of the AND circuit is coupled to the time signature input terminal of the adder / subtractor counter, and the latter adder / subtractor control input terminal is respectively coupled to the secondary contact of the switch. The data outputs of the counters are each connected to the input of the subordinate coding device and its output is connected to the control input of the controllable delay or amplification device or the associating device.

Adjustment by distance measuring device using comparison of electrical or optical and acoustical elapsed times-or advantageous feasibility of sound source localization device for automatic control of control equipment is The ultrasonic generator is connected to the transmitter, the microphone provided for the solo performer sound source in the performance area is connected to the ultrasonic receiver, the reception frequency range is expanded, and the Or at the end of the optical transmission section, the microphone separation device is preferably provided with a PLL-filter, the key signal for the ultrasonic generator and the transmitted and regenerated key pulse being applied to a time comparison circuit, The circuit emits a pulse whose duration is approximately proportional to the acoustic path, the output of which is a controllable delay or amplification device, either directly via a time value converter or via a computer. It is connected to the control input terminal of.

In the case of a small number of vowels, it is particularly advantageous in terms of cost to use the voicing position also as the measuring acoustic signal transmitter position, ie to couple the ultrasonic generator to the vowel. The time value converter includes a time pulse generator which is also connected to the key pulse generator via a distributor. A storage and comparison device is advantageously provided between the time value converter and the adjusting and / or control equipment, whose output end is subject only to the adjusting step and-direction of the change each time, and to the delay- To the corresponding steps of the amplification device are further adjusted.

In the case of a large number of loudspeaker positions, ie loudspeaker arrangements, the possibility of a more advantageous solution is that in the case of a time value converter with a number of measured acoustic signal transmitters that clearly define the coordinates of the operating area. Is to be connected to the control input of the delay or amplifier via a calculation unit that also converts the coordinates.

The present invention will be described in detail below with reference to some embodiments. FIG. 1 with a microphone 6 for a movable solo actor sound source, extracted and observed from a large space acoustic device, serves for a detailed explanation of the principle of the invention and the suggested improvement possibilities.

The utterers 3a to 3n represent some utterers distributed in the performance area 1 and the viewing area 2 (see FIG. 2), of which the utterer 3n is considered to be variable in position. A device 4 for reactionless differential addition and distribution, which is shown as a block, hereinafter referred to as a vocoder summing / distributing device, is subordinate to the voicing devices 3a ... 3n, and is connected to another input terminal thereof. Is connected to another sound source (not shown).

A controllable amplification device 5 is provided between the microphone 6 and the vocoder summing / distributing device 4, a sound source-dependent device for reaction-free differential pre-addition and distribution, and hereinafter abbreviated. A source adder / divider and a controllable delay device 9 are included. The illustrated sound source adding / distributing device 10 is useful for connecting to another sound source branch not shown in the figure with respect to the ordering or evaluation according to the sound source type, with the other input end which is suggested. This will be described in detail with reference to FIG.

The controllable amplifying device 5 and the controllable delay device 9 have a control input 7 which is connected to the regulating or control facility 8 which is the main feature of the invention. The latter is mainly composed of a sound source or a microphone position input device 8a, a voice generator position input device 8c and a comparison / control device 8b, as indicated by the block. Other couplings are suggested from the coordinator-control facility 8 to the adders and distributors 4 and 10, which will be described later.

The microphone or sound source position input device 8a can be embodied by, for example, a performance area imitating device or a distance measuring device. Fixed position data for a fixed occupation position is stored in the voice generator position input device 8c. For variable-position voice generators, variable values can be stored in the same way as for moving solo microphones. The comparison-control device 8b compares the positions and forms an adjustment value for the acoustic transit time resulting from the difference in position and the controllable delay and level values on the amplifying devices 9 and 5.

The comparison / control device 8 adjusts the delay time of the input end of the remotely controllable delay device 9 corresponding to the number of utterances n, which is a value substantially equivalent to the acoustic elapsed time. For controllable amplifiers, a step-by-step amplification-attenuation is provided for level-dependent adjustment.

The schematic diagram shown in FIG. 2 is also possible with some other combinations of voicing device arrangement and sound source processing which are dealt with in the second and subsequent claims of the utility model of the present invention, 1 shows an arbitrarily chosen performance area 1 with variants and improvements. The two solo performer sound sources with microphones 6a and 6b are movable in an arbitrary manner over the performance range 1. A sound source with a small three-dimensional spread and a low output is on the table and can be moved to various positions together with the microphone 6c, the utterer 3n, and the utterer 3j.

The three-dimensionally spread sound source with high acoustic output is equipped with several microphones 6d to 6m. Three loudspeakers, the main groups 3a, 3b and 3c, of the vowels are represented in the boundary area between the performance area 1 and the viewing area 2.

On the side and the back of the performance area 1, there are vocalizers 3d to 3g provided for supporting a sound source of weak sound and for supplementing the performance area 1. The voicing machine 3h covers a sound source that has a three-dimensionally wide acoustic output.

FIG. 3 shows a block connection diagram corresponding to the overview diagram of FIG. 2, in which the microphone and the vowel symbol of both are corresponding to each other. The fixedly installed voice generators 3a to 3c are connected to the delay device 9d and the sound source addition / distribution devices 10b and 10d which are set to be unchanged, but the variable voice generators 3d to 3n can be controlled. Are connected to the delay devices 9a, 9b, 9c and the sound source adding / distributing devices 10a, 10c, and in the case of a movable microphone, the delay devices 9a and 9b for the voice device of the fixed device can also be variably controlled. is there.

The microphones 6d to 6m are conventionally connected to the amplifiers 5d to 5m, and the output terminals of the latter are connected to the sound source adder 10b via the sound source distributor 10d. The output of this source adder 10b is coupled to a delay 9d, corresponding to the known principle of the control system. The various delayed outputs of the delay device 9d are coupled to a vowel-addition distribution device 4 consisting of a distribution device 4d and a reactionless addition device 4b.

The microphone 6c is also coupled to the amplifying device 50, and its output terminal is connected to the sound source adding devices 10a and 10c via the sound source distributing device 10c, the delay devices 9c and 9d, and the voicing device 3a. To the voice generator addition and distribution device 4 leading to 3 to 3g, and also directly to the voice device 3n via the voice distributor distribution device 4a.

The output terminals of the amplifiers 5d to 5m are also coupled to the input terminals of the delay device 9c via the sound source distributor 10d and the adder 10a, and the voice generators 3d to 3g are the voice generator-adder / distributor. It is adapted to be coupled via 4 to a delay device 9c.

This subsystem is particularly suitable for the enhancement of individual and / or group sources of quiet placement.

In the case of changing the position of both the microphone 6c and the voice generator 3n, the microphone 6c is connected to the sound source distribution device 10c, the addition device 10a, and the voice device-addition distribution device 4 via the delay devices 9b and 9c. The latter is connected to the voice generators 3a to 3h, while the voice generator 3o is directly connected to the distributor 10c.

The microphone 6b is connected to a distributor 10c for minimizing the required amplification channel via an amplifier 5 consisting of a controllable amplifier with several inputs connected in parallel, the latter being the latter. Is applied to the input terminals of the adders 10a and 10b, and to the distributor 4a and the adder 4b via the delay devices 9b and 9c, and the voice generators 3a to 3c and 3d to 3n output the adder. It becomes to be differentially coupled to the end without reaction.

The microphone 6a is coupled via an amplifier 5a and a distributor 10c to the input of a controllable delay device 9a, the output of which is also connected to the input of a voice-voice adder-distributor 4. The latter collectively subordinate all relevant input conductors to the voice generators 3a to 3n.

The control inputs 7 of the devices of the controllable amplification-5b, the distribution-10c, the delays-9a, 9b and possibly 9c and the summing distribution 4 are the corresponding inputs of the regulating and control device 8. Is connected to. The control input of the vowel adder / divider 4 controls the differential amplification of the vowels 3a to 3n and the variable distribution of the input signal of the distributor 4a.

In the so-called playback method where the original sound source is simulated partly or completely by recording, in some cases often implemented providing partial or complete sound, the corresponding microphone is replaced by the output of the recording device. In that case, it is expedient to supplement the main vocalist in the performance area with one or several vocalizers 3d, 3e, which simulate the original sound, which is provided near the sound source in each case. .

The same operation should be performed when amplifying the original sound source of the weak sound. FIG. 2 thus shows, by way of example, a vocalizer 3n supporting the original sound source, the input signal of which is taken without delay from the output of the amplifier 5c.

In order to avoid feedback, in this case it is expedient for the microphone and the voice generator to have suitable directional characteristics.

For the additional voices 3h, 3e used, for example, for actors, the amplifier 5 is followed by another distributor 4a and adder 4b to which these voicers are connected. 1 and 3, the controllable amplification device 5 and its associated level of the movable (solo performer) sound source-and the adjustment for direction control-or the sound source of the control device-8-or the microphone position input device 8a. FIG. 4 shows an advantageous formation of the arrangement

A microphone 6 subordinated to the moving solo actor sound source or an additional acoustic signal source (eg a playback magnetic recording device) simulating this sound source comprises at least two voltage controlled amplifiers (VCA). It is coupled to a controllable amplification device 5a, 5b, 5c which is shaped.

The output of the controllable amplifier 5 is coupled to the input of the source adder / divider 10 and its output signal is coupled to the delay 9 shown in FIGS. 1 and 3, for example. The level control device 16 is connected to all existing controllable amplifier devices 5a, 5b, 5c via multipliers 17a, 17b, 17c.

Adjustment—or a sound source that is a component of the control facility 8 (see FIGS. 1 and 3) —or the output of a microphone position input device 8a or a comparison—and the output of another structure with a control device 8b. The ends are coupled to the corresponding inputs of the multipliers 17a, 17b, 17c.

When operating the level control device 16, the amplification of all existing controllable amplification devices 5, 5a, 5b, 5c is therefore changed in the same sense, while the sound source and / or the microphone position input. When operating the device 8a, a differential adjustment of the amplification of the same amplifying device 5, 5a, 5b, 5c is performed in order to set the level difference required for directional operation between the output signals of the amplifier arrangement. . The control signals of both the input device 8a and the operating device 16 can be in the form of a DC voltage signal or a digital form for VCA control, but they are combined in the multipliers 17a, 17b and 17c to generate the result for each channel. It becomes a control signal and is applied to the control input terminals of the amplifiers 5a, 5b and 5c.

In this way, in each channel, the necessary amplification change for level control or modulation of the sound source signal and direction control can be realized by the same controllable amplification devices 5a, 5b, 5c, and therefore the cost of the acoustic channel concerned. Can be reduced and transmission quality can be improved. Controllable amplifier circuits of this kind are also advantageously used in the mixing of multichannel recording techniques such as the two-channel stereophonic effect or the four-channel method.

The input devices 8a and 8c in the adjustment or control facility 8 can be realized in various ways. One possible structure consists of a switch, for example in the form of a key-shaped switch, a group of sensors or other contact components, which, for example, provide sound, all of which mimics the geometrical relations of the auditorium's performance area. Switches arranged in a matrix and each provided with a display element (for example, a lamp or a light emitting diode) are subordinate to a specific partial area of the operating area.

Another operation-arrangement of display elements, for example, the appearance contour of the performance area is marked by a switch, while the interior plane of the performance area thus imitated is It is also possible that an appropriate display element for indicating the moving sound source position is provided.

Another variant of the operating field consists of a coordinate transmitter whose operating elements are free to move in all directions of a plane and whose position coordinates are emitted, for example, in the form of counting pulses, code words or DC voltage signals. Raru Graphic displays, such as video monitors, can also be combined with manual tracking elements, such as light pens or other optoelectronic sensors to fulfill this function. The switch arrangement of the input device 8a of the adjustment or control facility 8 whose rows or columns are partly represented in FIG. 5 is suitable for the first-mentioned embodiment.

The primary contacts of the switches 20 a, 20 b 20 c, here represented as key switches for operation, are at a common potential, while the secondary contacts are each connected to the input of one logical OR circuit 21. , An L signal is generated at the output end when any one of the switches is operated, and the time signal generated by the frequency variable time meter oscillator 23 is sent to each of the respective time signals via the AND circuit 22 used as a gate circuit. Each of the adder / decrement counters 24a, 24b and 24c associated with the switch is connected to the respective beat input terminals.

The control input terminals for increasing / decreasing the counters are respectively subordinated to one of the secondary contacts of the switches 20a, 20b, 20c and the switch operated in each case, for example 20b. Counter 24b performs the addition and the remaining counters are coupled so that they operate in the opposite direction.

The data output terminals of the counter 24, which outputs the counting state in binary coded form, for example, are connected to the input terminals of one coder 25a, 25b, 25c, respectively. Standardize code conversion of created input data words to corresponding output data words.

These output data words of the coder 25 control the parameters of the controllable delay device 9, the amplifier device 5 and the summing / distributor devices 4 and 10 connected to the first output of the coder in a suitable manner.

Appropriate display elements 27a, 27b, 27c in the operating room, such as lamps, light emitting diodes or liquid crystal displays, can be connected to the secondary output. In the case of using a DC voltage controlled amplifier 5 (so-called VCA), digital analog converters 26a, 26b, 26c are therefore inserted in the middle.

The coder 25 and the digital-to-analog converter 26 are to read and control the counter output, delay, amplify-and output the control value to the distributor-by means of a temporary division multiplexing system not shown here. When implemented, each can be reduced to one type of functional block.

The functions of the circuit arrangement described here can also be implemented advantageously by means of more highly integrated components, for example microprocessors.

The arrangement shown in FIG. 6 is for a control approximately proportional to the acoustic path, in which the comparison of the vocoder position and the sound source position is carried out directly by the distance measuring device without any other auxiliary means. An easily understandable example of the automatic sound source position measuring device will be shown.

Ultrasonic wave generators 30a and 30b as measuring sound signal transmitters are attached at the same positions as the voice generators 3a and 3b, and are connected to ultrasonic wave transmitters 31a and 31b with keys, respectively. The microphone 6 is located at different distances from the voice generators 3a and 3b in the performance area 1 and is equipped to receive the ultrasonic frequency used.

For example, it may be formed as a stage microphone without a cable, and the received scanning ultrasonic signal may be converted into another frequency range. On the other hand, FIG. 6 shows the simplest case of a wired connection, from which a branch is made via three filters 32, 33a and 33b.

The first filter 32 is a low-pass filter, and the sound signal of the sound source is applied to its output end. The other two filters 33a and 33b are frequency selection filters, for example, PLL-filters and are tuned to both ultrasonic frequencies.

For example, the key signals reproduced in the key pulse reproduction circuits 34a and 34b, which may include an amplifier, a rectifier and a threshold value switch, have the same duration but the acoustic elapsed time compared to the original key signal. There is a slow side only, these are at the key inputs of the ultrasonic oscillators 31a and 31b and at the other inputs of the time comparison circuits 35a and 35b, which can be RS-triggered, for example. In some cases, the original key signal is applied to the set input terminal and the regenerated delayed key signal is applied to the reset input terminal. Since only the first front side of the reset pulse switches, it remains ineffective even if additional reflected ultrasound pulses appear later.

The output terminals of the time comparison circuits 35a, 35b, in which the pulse takes a duration proportional to the elapsed time, are connected to time value converters 36a, 36b, 36c, which in the simplest case are integration circuits, The latter transforms these pulses into controllable delays and / or control variables suitable for the amplifier.

The possibility of implementing a time value converter taking into account the special conditions of the present invention is entered in the time value converter 36b at the bottom of FIG. Obstacles in key pulse transmission, for example temporary concealment in the absence of individual transmitted key pulses, should be taken into account over the ultrasound interval, so this should be checked and the logical comparison most easily realizable with a counter. It is a good idea to insert a circuit.

The generation of the key pulse is therefore carried out by the divider 37 which is arranged after the beat pulse oscillator 38. In addition, the beat pulse is applied to the input end of the AND gate 39 of the time value converter 36b, and the pulse of the duration proportional to the elapsed time is applied to the other input end.

The output of the AND gate 39 can then be evaluated each time using a counter, for example activated by the front side of the key pulse. A number of key pulses is available that is proportional to the elapsed time and is compared with the number of preceding key pulses using a comparison counter, and the transmission to the comparison counter is only done with the back face of the transmitted key pulse. The limited difference in the state of the counter conveys the controlled variable and one direction to the control input of the controllable delay or amplifier.

The absence of a key pulse does not lead to transmission and adjustment, but to counting again; likewise, exceeding the limit of the adjustable difference is transmitted, for example, instead of the concealed direct key pulse, the reflected one. Lead when

This is one of the many possibilities of a self-controlling circuit 40 for converting the number of key pulses into an adjustment quantity, and is therefore only given together.

Without the need for a separate figure, it is also possible to see in FIG. 6 the possibility of extension to a large number of vocoder positions and microphones. Coordinates can be obtained and stored by multiplying the circuit parts 33 to 36 for any number of sound sources by using two or three ultrasonic vocalizers 30 at the upper and lower sides in the case of separation into upper and lower parts.

These coordinate values can be used in the input device 8a at the sound source or microphone position, optionally in parallel or in series. In the same way, the input device 8c for the vocalizer position can also be a memory.

The comparison and control device 8b then advantageously cycle-calculates the coordinate relationships, compares the actual result with the values of the preceding cycle and, if necessary, after further comparison and control calculations the controlled variable and the −direction. Is output to various controllable delays or amplifiers as an instruction with an address.

Automatic input can also advantageously be combined with manual input, where the technical burden on the microphone, which is subordinate to the stationary sound source, is also high for solo performers who are subject to a lot of position changes. The burden is small. This device has the characteristics of a multi-channel processor, calculated for each sound radiator (enclosed loudspeaker system) according to a predetermined algorithm (stepwise method) according to known prior effects Providing excellent wide range sound enhancement coverage by processing the input microphone signal (or playback signal from recording) with level adjustments in the form of delay times and signal combinations (so-called packages) Is. The working principle of the processor is not based on the practical image in 2-channel stereo for normal domestic applications, which is completely unsatisfactory for large audiences. A DSS (Delta Stereophonon) processor with the required number of sound radiators gives a true sense of direction and distance to any location in a large audience.

[Brief description of drawings]

FIG. 1 is a main block connection diagram.

FIG. 2 is a diagram showing a three-dimensional configuration with a microphone and a voice generator arrangement.

FIG. 3 shows a block diagram of the possible arrangement of FIG.

FIG. 4 shows an advantageous controllable amplification device.

FIG. 5 is a diagram showing a manual input device.

FIG. 6 is a diagram showing an automatic input device.

[Explanation of symbols]

 1 Performance area 2 Viewing area 3 Voice generator 4 Voice addition and distribution device 5 Controllable amplification device 6 Solo performer microphone 7 Control input terminal 8 Adjustment or control equipment 8a Sound source or microphone position input device 8b Comparison-control device 8c Voice position input Device 9 Controllable delay device 10 Sound source adding / dividing device 16 Level operating device 17 Multiplier 20 Switch 21 OR circuit 22 AND circuit 23 Time signature transmitter 24 Adder / subcounter 25 Coder 26 Digital / analog converter 27 Display element 30 Measured sound Signal transmitter 31 Ultrasonic oscillator 32, 33a, b Filter 34 Key pulse reproduction circuit 35 Time comparison circuit 36 Time value converter 37 Divider 38 Key pulse speaker 39 AND gate 40 Conversion circuit

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Wolfgunk Hake Germany 1199 Berlin Nerteschtraße 43 (72) Inventor Werner Lorenz Germany 1195 Berlin Kepenitzkel Landschutlerse 156 (72) Inventor Wolfgunk Arnert Germany Federal Republic 1116 Berlin Teichauer Schutlerse 46 (72) Creator Frank Schyutte Thuen Federal Republic of Germany 1636 Brakenhuerde Goethe Schutlerse 26 (72) Creator Walther Reichart 8020 Dresden Dondorf Scheutraße 39

Claims (12)

[Scope of utility model registration request] 1. A wide area acoustic enhancer for multidimensionally extended playing and audience areas, among several distributed sound radiators and microphones as well as microphone sound radiator connections. A wide-area sound enhancer in which at least one of the microphones has a delay, amplification and non-responsive weighting device assigned to the solo source, and is placed in the connection assigned to that single microphone. At least two devices for delay and amplification include a device for control of delay time and at least another device for control of amplitude, transitioning between playing and audience areas. In addition to the sound radiators located in the area, additional sound radiators distributed in the playing area are connected to the output device for the distribution and weighting of the connection, and are delayed and increased. The control device for the two devices for includes an input means for receiving microphone position and sound source power data, and an input means for receiving sound radiator position and power data. The comparison and control device, which provides the signals of the delay time and the amplitude for the control of the two said devices for direct sound emission and delay after amplification, determines the value from the comparison of the position and sound power data. A wide-area acoustic enhancement device characterized by adding improvements to increase the curve. 2. The wide area sound enhancement device according to claim 1, wherein the input means for the harmony of a fixedly placed sound radiator, for the power of the sound source and for the sound radiator power. ,
A device comprising a fixed storage device, wherein an adjustable input panel is used for adjustment of the repositioning solo sound source and the repositioning sound radiator. 3. The wide-range acoustic enhancement device according to claim 1, wherein the input means for the power of the sound radiator, and for adjusting the sound radiator fixedly installed and for the power of the sound source are constant. A storage device, the adjustable positioning device being used for adjusting a variable position solo sound source and a variable position sound radiator. 4. The wide area sound enhancement device according to claim 1, wherein the input means has a numerical value or a digital output of a sound source power or an adjustment value, and the comparison and control device is for controlling the device for delay and amplification. A device comprising a computer for providing a control value. 5. The wide area acoustic enhancer according to claim 1, wherein the output device for weighting and distribution is coupled to a plurality of microphones assigned to the sound source region, and the signal part is included in the sound power comparison. A device characterized by the above. 6. The wide area sound enhancement device of claim 1, wherein controlling one or more devices for amplification or weighting with respect to amplitude comprises increasing control circuitry.
Its input is connected to the outputs of the control and the driving device for leveling, the output being connected to the control inputs of at least two controllable amplifiers with signal inputs connected to the sound source, Device to do. 7. A wide area acoustic enhancer according to claim 1, wherein a controllable attenuator is inserted between the output device for weighting and distribution and the sound radiator of the additional playing area, A device characterized in that the input of an attenuator (damping device) is connected to the output of a comparison and control device extended by a position matching test device. 8. The wide area sound enhancement device according to claim 1, wherein the input means for the position of the microphone and the sound source power, and the comparison and control unit are reflected.
A device characterized in that it has an additional connection of a unit for generating, and is capable of adopting the position of the sound source in the acoustic field and the degree of simulation for the power of the sound source. 9. A wide area acoustic enhancer according to claim 2, wherein the adjustable input panel is a simulation of a playing area having an operating field representative of the position of the sound source and sound radiator therein. And the associated comparator is a combination of these input panels and amplification stages for proportional transition of delay time. 10. A wide area acoustic enhancer according to claim 2, wherein the adjustable input panel is connected to a common potential (voltage) on the one hand and the input of the OR circuit and the upper and lower counters on the other hand. ) Includes a row of switches assigned to coordinates connected to the upper and lower control inputs, the time input of the counter is connected to the output of the AND circuit, and the input of the AND circuit is the output of the OR circuit and the key signal of the variable frequency. A device characterized in that it is connected and the data outputs of the upper and lower counters are connected to a comparison control device by a coder. 11. The wide area sound enhancement device according to claim 3, wherein a sound measurement signal generator or a sound measurement signal receiver is provided in the position locating device, and at least one of which has a solo position whose position changes and at least two. A device characterized in that it is assigned a position at the edge of one playing area, is connected to each other on the other hand and is connected by a coder to a comparison and control device. 12. The wide area sound enhancement device according to claim 10, wherein the sound measurement signal generator is connected to a pulsed ultrasonic signal generator, and the microphone is connected to an ultrasonic receiver. At the end of the optical or optical transmission path, a separating device is provided, the regenerated pulse transmitted with the clock signal for the ultrasonic signal generator having a connection time approximately proportional to the propagation path applied to the time comparison circuit. A device which produces a pulse, the output of which is coupled to the control input of a delay or amplifier which can be controlled when the test signal generator and the sound radiator are co-located.