DE102022130190B3 - Striking device and method for striking a singing bowl - Google Patents

Abstract

Stop device for a singing bowl (14), comprising a support surface (21) for the singing bowl (14), a drive motor (19), a beater (15) driven by the drive motor (19), a support surface (21) and the drive motor ( 19) connecting frame structure (20), and a control unit (22) for controlling the drive motor (19). The control unit (22) is designed to activate the drive motor (19) so that the beater (15) is accelerated in the direction of the singing bowl (14), and to switch the drive motor (19) into a freewheeling state before the beater ( 15) comes into contact with the singing bowl (14). The invention also relates to a method for striking a singing bowl.

Description

The invention relates to a striking device and a method for striking a singing bowl.

Singing bowls vibrate at frequencies you can hear and feel when struck with a mallet. They are used in medical and therapeutic environments, for example for mindfulness exercises, yoga or meditation practices. Depending on the type and hardness of the strike, a singing bowl emits different frequencies over a certain period of time depending on its shape, material and workmanship. These so-called resonance vibrations are different for each bowl and determine the sound characteristics of the singing bowl.

Traditionally, singing bowls are struck manually by striking the edge of the singing bowl with a hand-held mallet.

Stop mechanisms are also known in which the singing bowl is struck by a motor drive, DE 20 2015 101 250 U1 , US 10,839,783 B2 . These striking mechanisms have the disadvantage that the sound spectrum is different than when striking manually. The sound spectrum of the singing bowls cannot be fully exploited with these stop mechanisms.

Out of GB 132,632 A An electric bell is known in which a rolling armature is under the influence of a magnetic field, so that the magnetic field acts in the direction of a central position of the armature. In US 2016/0299472 A1 describes a clock with a clockwork mechanism in which a motor mechanism is used to drive and control the chime mechanism.

The invention is based on the object of presenting a striking device and a method for striking a singing bowl, with which the disadvantages mentioned are avoided. The task is solved with the features of the independent claims. Advantageous embodiments are specified in the subclaims.

The stop device according to the invention for a singing bowl comprises a support surface for a singing bowl, a drive motor, a beater driven by the drive motor, a frame structure connecting the support surface and the drive motor, and a control unit for controlling the drive motor. The control unit is designed to activate the drive motor so that the mallet is accelerated towards the singing bowl and to switch the drive motor to a freewheeling state before the mallet comes into contact with the singing bowl.

The invention is based on the knowledge that the manual striking movement can be better approximated if the movement with which the mallet is brought closer to the singing bowl is divided into an acceleration phase and a free-running phase. In the acceleration phase, the mallet is provided with an amount of kinetic energy that is sufficient to strike the singing bowl. In the free-running phase, the mallet approaches the singing bowl using kinetic energy until the mallet hits the singing bowl and the singing bowl is struck. At the same time, the mallet bounces off the singing bowl so that the singing bowl can vibrate without being dampened by continued contact with the mallet.

It has been shown that it is relevant for the full development of the sound spectrum that the mallet moves away from the singing bowl immediately after striking. Even slight delays in removing the mallet will affect the sound spectrum. In the striking device according to the invention, the drive motor is in the freewheeling state at the time of striking, so that there is no resistance that is opposed to the backward movement of the beater by the drive motor. The full impulse resulting from striking goes directly into the backward movement of the mallet. The mallet is only in contact with the singing bowl for a very short period of time, and the sound spectrum of the singing bowl can unfold undamped.

In one embodiment of the invention, the drive motor is a stepper motor. In a stepper motor, a time-varying electromagnetic field is generated in such a way that the moving component of the drive motor moves in a certain way relative to the stator of the stepper motor due to the action of the electromagnetic field. The stepper motor may be designed such that the moving component is in a freewheeling state relative to a stator of the stepper motor when the electromagnetic field is turned off. The stepper motor may include a rotor and a stator. A stepper motor designed as a linear motor is also possible. Stepper motors have the advantage that they can be operated almost silently, so that the sound of the singing bowl is not affected by noise from the drive motor. In comparison to servo motors, stepper motors also have a higher torque at low speeds, so that a relatively short acceleration phase is sufficient to accelerate the beater sufficiently In order to avoid disruptive, audible vibrations from spreading to the frame structure via the drive motor when the beater head impacts, the drive motor can be attached to the frame structure via a motor mount provided with damping.

The beater can be connected to a drive shaft connected to the rotor of the drive motor. The mallet can have a shaft and a mallet head, the shaft being connected to the drive shaft and the mallet head striking the singing bowl. The longitudinal direction of the shaft can form a right angle with the axis of the rotor, so that the shaft extends in the radial direction. The mallet head can be formed at a distal end of the shaft. A proximal end of the shaft may be connected to the drive shaft. It is also possible for the drive shaft to be arranged between the proximal end of the shaft and the mallet head. The unbalance can be reduced by a counterweight in a section of the shaft opposite the mallet head. The mallet head can be made of a material known from manually used mallets. Common materials for the mallet head include felt or rubber.

In order to be able to use the stop device with different mallets, adapter inserts can be provided for the shaft holder, so that different adapter inserts can be used for different diameters of the shaft. A set of different shaft holders is also possible, so that the shaft holder suitable for a specific mallet can be attached to the drive shaft.

The stop device can be operated in such a way that the mallet head is moved in a plane that forms a right angle with a central axis of the singing bowl. The stop device can be operated so that the mallet head hits the edge of the singing bowl. The direction of movement of the mallet head at the moment of impact preferably essentially coincides with a radial direction of the singing bowl. In other words, the mallet head would move in the direction of the central axis of the singing bowl if the movement continued linearly at the moment of impact. The angle between the instantaneous direction of movement of the mallet head upon impact and the radial direction of the singing bowl can in particular be smaller than 20°, preferably smaller than 10°, more preferably smaller than 5°. An adjusting device can be provided so that the angle can be maintained for singing bowls with different diameters.

The angle at which the mallet head hits the singing bowl depends on the distance between the mallet head and the drive shaft. The adjusting device can be designed so that the distance between the beater head and the drive shaft is adjustable.

The shaft of the mallet can have a cylindrical section, so that the shaft can be fixed to the drive shaft at different points of the cylindrical section. A shaft holder can be attached to the drive shaft into which the shaft can be inserted. The shaft receptacle may be provided with a lining that has high friction with respect to the outside of the shaft and/or that has a slight clamping fit with respect to the shaft. The liner can be made of a material that is elastically deformed when the shaft is inserted.

The shaft receptacle can have an opening through which the shaft can be inserted into the shaft receptacle. When the stop device is in operation, the opening can be closed with a cover. The cover can be rotatably mounted on the shaft receptacle, so that the opening is closed in a first angular position of the cover and is freely passable for the shaft in a second angular position of the cover.

The control unit can be designed to control a movement sequence of the beater that includes several phases. Starting from a starting position, the mallet can be moved backwards so that the mallet head moves away from the singing bowl. At a distal end point, the direction of movement can be reversed so that the mallet head approaches the singing bowl. The reversal of the direction of movement can coincide with the acceleration phase in which the mallet head is accelerated towards the singing bowl. The acceleration phase can end at a release point at which the drive motor is switched to the freewheeling state, so that the mallet head continues the movement in the direction of the singing bowl only using the kinetic energy and without any further driving force. After hitting the singing bowl, the mallet head bounces off the singing bowl, so that the mallet head moves backwards again. The stop device can be set up so that the backward movement swings out freely. It is also possible to apply braking force with the drive motor in order to slow down the backward movement. The application of the braking force only begins after that Bounce is complete and the mallet head is at a distance from the singing bowl. In preparation for a subsequent striking process, the mallet can be moved back to the starting position. Alternatively, it is also possible for the starting position to coincide with the distal end point. In this case, an initial backward movement is not necessary, but the acceleration phase can begin directly at the starting position.

The acceleration phase can be kept short by using a sufficiently high-torque stepper motor. For example, the acceleration phase can extend over a rotation angle of the drive motor between 10° and 120°, preferably between 20° and 70°.

The control unit can be designed to variably determine the starting position and/or the release point depending on the singing bowl used. For this purpose, the control unit can control a reference movement of the mallet in order to determine the stop position, i.e. the angular position of the drive motor at which the mallet comes into contact with the singing bowl. To do this, the mallet head can be moved forward until the mallet head touches the singing bowl. The control unit can determine this by increasing the resistance encountered by the motor. If there is a position above the stop position in this way, the control unit can determine suitable reference values for the associated starting position and/or the associated release point. Based on these reference values, the force used for acceleration can be changed to obtain different volumes and sound spectrums. The optimal rotational movement resulting from the applied torque and distance is determined by the software.

The drive motor can include a rotary encoder. The control unit can derive information about the current angular position of the beater from measured values from the rotary angle sensor.

The control unit can be designed so that the reference travel is initiated by a user input. A reference run triggered by a user input can be useful, for example, if the user has replaced the singing bowl. It is also possible for a reference run to be triggered automatically when certain events occur.

The control unit can interact with a memory in which one or more sequence programs for controlling the drive motor are stored. The control unit can be designed to control the drive motor according to such sequence programs. A sequence program can, for example, consist of a singing bowl being activated at a predetermined time. Using such a sequence program, the stop device can be used, for example, as an alarm clock or as a sequence timer for yoga or meditation exercises. A sequence program is also possible in which a singing bowl is struck at several predetermined times. This allows it to be used as an interval timer for breathing exercises, relaxation techniques or mindfulness exercises. The times at which the singing bowl is struck and the length of the intervals between two strikes can be adjusted.

The hardness of the attack, i.e. the kinetic energy with which the mallet head hits the singing bowl, can be adjustable. The hardness of the attack can be changed by user input.

The stop device can include an operating unit via which a user of the control unit can make specifications and/or via which information about the operating state of the stop device is output. The operating unit can include a graphical user interface. The graphical user interface can be designed to enter user input. The operating unit can communicate with the control unit via a radio connection. In one embodiment, the operating unit is a smartphone with which the control unit is controlled via an app.

In one embodiment, the stop device comprises a sensor for a parameter of the human body, such as blood pressure or heart rate. The control unit can be designed to control the drive motor depending on measured values that the control unit has received from the sensor. In this way, biofeedback can be generated in which a change in body parameters causes a change in the sounds (e.g. touch intervals or volume). This change is in turn perceived by the body. This allows processes that occur in the body to be observed. This treatment method is used, for example, for relaxation techniques. The stop device can include a plurality of sensors for various parameters of the human body. Such a stop device with a sensor for a parameter of the human body has independent inventive content, even without the drive motor being switched to a freewheeling state.

It is also possible for the control unit to react to a change in body parameters. For example, if a certain sequence of attacks leads to an increase in the heart rate, the control unit can automatically switch to a different sequence of attacks.

The stop device can include a loudspeaker and/or a structure-borne sound transducer, which are controlled depending on sound waves generated by the singing bowl. A microphone can be provided with which the sound waves are recorded. The structure-borne sound transducer can be controlled depending on data recorded with the microphone. If the structure-borne sound transducer is connected to a piece of furniture on which a person is sitting or lying, vibrations can be transmitted to the piece of furniture so that the user not only hears the vibrations, but also feels them mechanically. The stop device can include more than one structure-borne sound transducer (bass shaker). Such a stop device with a structure-borne sound transducer and/or a loudspeaker has independent inventive content, even without the drive motor being switched to a freewheeling state.

In one embodiment, the support surface for the singing bowl is arranged on a turntable, which is rotatably mounted relative to the frame structure of the stop device. The singing bowl can be positioned on the turntable so that the axis of the singing bowl coincides with the axis of rotation of the turntable. Such a turntable makes it possible to strike the singing bowl in different areas of the edge of the singing bowl. This leads to slight variations in the sound spectrum, especially with hand-made singing bowls. The stop device can include a rotary drive, via which the rotary movement of the turntable is driven. The rotary drive can be controlled with control signals from the control unit. The rotary drive can be controlled in such a way that a random sequence of different sound spectrums results. The stop device can also be set up so that certain angular positions of the turntable can be set specifically through user input.

The invention also relates to a system comprising a striking device according to the invention and a singing bowl, in which the singing bowl is positioned on the support surface of the striking device. The singing bowl can be rotationally symmetrical, with the axis of symmetry in particular being aligned perpendicular to the support surface. The free edge of the singing bowl can point upwards. The singing bowl can be made of a brass alloy. The singing bowl is often handmade.

The system may comprise a set of singing bowls designed to be alternately positioned on the support surface. Depending on the size of the singing bowl, the mallet must have a different height position in order to hit the edge of the singing bowl. For height compensation, the system can include a set of singing bowl coasters of different heights.

Depending on the height of the singing bowl, a singing bowl coaster can be positioned between the support surface and the singing bowl, which is suitably selected from the set of singing bowl coasters. Alternatively, the stop device can also be designed in such a way that the axial position of the shaft holder on the drive shaft is adjustable.

The invention also relates to a method for striking a singing bowl, in which a mallet is connected to a drive motor and in which the drive motor is controlled in such a way that the mallet is accelerated in the direction of the singing bowl and that the drive motor is switched to a freewheeling state before the mallet comes into contact with the singing bowl.

The disclosure includes developments of the method with features that are described in connection with the stop device according to the invention. The disclosure includes further developments of the stop device, which are described in the context of the method according to the invention.

• 1: eine Ausführungsform eines erfindungsgemäßen Systems mit einer Anschlagevorrichtung und einer Klangschale;
• 2: eine Ansicht von oben auf die Ausführungsform gemäß 1;
• 3: die Ansicht gemäß 2 mit einer anderen Klangschale;
• 4: ein Detail aus 1 in vergrößerter Darstellung;
• 5: eine alternative Ausführungsform einer erfindungsgemäßen Anschlagevorrichtung;
• 6: eine alternative Darstellung einer erfindungsgemäßen Anschlagevorrichtung;
• 7, 8: weitere Ausführungsformen erfindungsgemäßer Anschlagevorrichtungen;
• 9: ein beispielhaftes Klangspektrum einer Klangschale;
• 10: ein Diagramm eines zeitlichen Ablaufs beim Betrieb einer erfindungsgemäßen Anschlagevorrichtung
• 11: eine alternative Ausführungsform einer erfindungsgemäßen Anschlagevorrichtung;
• 12: die Anschlagevorrichtung aus 11 in einer anderen Perspektive.

The invention is described below by way of example with reference to the accompanying drawings using advantageous embodiments. Show it:

• 1 : an embodiment of a system according to the invention with a stop device and a singing bowl;
• 2 : a view from above of the embodiment according to 1 ;
• 3 : according to the view 2 with another singing bowl;
• 4 : a detail 1 in an enlarged view;
• 5 : an alternative embodiment of a stop device according to the invention;
• 6 : an alternative representation of a stop device according to the invention;
• 7 , 8th : further embodiments of stop devices according to the invention;
• 9 : an exemplary sound spectrum of a singing bowl;
• 10 : a diagram of a time sequence during the operation of a stop device according to the invention
• 11 : an alternative embodiment of a stop device according to the invention;
• 12 : the stop device off 11 in a different perspective.

A stop device according to the invention in 1 comprises a frame structure 20 with a support surface 21. A singing bowl 14 is positioned on the support surface 21. The singing bowl 14 is made of a brass material and is shaped so that sound waves with a specific sound spectrum are emitted when struck. The sound spectrum depends on the shape, material and workmanship of the singing bowl. An exemplary sound spectrum with the distinctive overtones of a singing bowl is in 9 shown. The support surface 21 is provided with damping so that the transmission of vibrations to the frame structure 20 is minimized.

A drive motor 19 is attached to the frame structure 20 and is arranged in a housing 31. A control unit 22 is also housed in the housing 31, which is in 1 is not visible. The drive motor 19 is designed as a stepper motor whose axis of rotation is aligned vertically. A shaft receptacle 18 is connected to the drive shaft 32 of the stepper motor, in which a shaft 17 of a beater 15 is fixed. At the distal end of the mallet 15, a mallet head 16 is formed from a felt material. The stop device can be switched on and off via a switch 23.

The drive motor 19 is controlled with the control unit 22 in such a way that the mallet 15 connected to the drive shaft strikes with the mallet head 16 on the edge of the singing bowl 14 in order to stimulate the sound output of the singing bowl 14. In 10 an exemplary time sequence when striking the singing bowl 14 is shown, the upper diagram showing the torque M that is exerted by the drive motor 19, and the lower diagram showing the path speed v at which the mallet head 16 of the mallet 15 moves. In this exemplary embodiment, the starting position corresponds to a distal end point at which the mallet head 16 is at the greatest distance from the singing bowl 14. Between times t1 and t2, the drive motor 19 exerts a torque in the forward direction, so that the mallet head 16 is accelerated in the direction of the singing bowl 14. At time t2, the path speed v of the beater head 16 reached its highest value. At time t2, the drive motor 19 is switched to a freewheeling state, which means that electromagnetic torque is no longer transmitted between the rotor and the stator of the stepper motor. The mallet head 16 moves in the direction of the singing bowl 14 without any further driving force. Due to friction, the path speed v decreases slightly.

At time t3, the mallet head 16 hits the singing bowl 14. The drive motor 19 is still in the freewheeling state, so that the mallet head 16 can bounce off without resistance. The orbital speed v changes direction within a very short time. Between times t4 and t5, the beater head 16 is braked and moved back to the starting position. The starting position can correspond to the distal end point, so that the next lifting process can follow immediately. A starting position is also possible in which the mallet head 16 is arranged closer to the singing bowl 14, so that a backward movement is initially required in order to bring the mallet head 16 from the starting position to the distal end point.

Like the comparison of the 2 and 3 shows, 21 singing bowls 14 with different diameters can be positioned on the support surface. A height compensation is carried out by arranging singing bowl coasters between the singing bowl 14 and the support surface 21 so that the edge of the smaller bowl has the same height position as the edge of the larger bowl. This allows singing bowls 14 of different sizes to be struck without having to adjust the height position of the mallet head 16.

The anchor device is in 2 , 3 each adjusted so that the mallet head 16 has a direction of movement when it hits the singing bowl 14 that corresponds to the radial direction of the singing bowl 14. If the movement continued linearly at the time of impact, the mallet head 16 would hit the central axis 24 of the singing bowl. The adjustment is made by changing the distance between the beater head 16 and the axis of rotation of the drive motor 19. The distance S1 for the larger singing bowl is 14 in 2 is smaller than the distance S2 for the smaller singing bowl 14 in 3 .

The shaft receptacle 18 is according to 4 designed so that the shaft 17 of the mallet 15 can be fixed in different longitudinal positions. A recess for receiving the shaft 17 of the beater 15 is formed in a body 27 of the shaft holder 18. With an adapter part 28 an adjustment is made to the diameter of the shaft 17. Before using another shaft 17, the adapter part 28 is replaced. The adapter part 28 is made of rubber, so that there is high friction against the outside of the shaft 17 and the shaft 17 cannot slip in the longitudinal direction. A cover 25 is rotatably mounted on the body 27 of the shaft receptacle 18. In 4 the cover 25 is shown in the open state, in which the beater 15 can be removed from the shaft receptacle 18 or inserted into the shaft receptacle 18. The cover 25 can be converted into the closed state by a rotary movement, in which the recess is covered at the top. When closed, the cover 25 snaps into place with a lock 28.

In order to adapt the stop device to singing bowls 14 with different diameters, the shaft 17 can be displaced in the longitudinal direction relative to the shaft receptacle 18. The use of tools is not necessary for adjustment. In each of the positions, the shaft 17 is fixed so that the longitudinal position remains unchanged during operation of the stop device.

If a singing bowl 14 with a different diameter is used, the angular position that the drive motor 19 has when the mallet head 16 hits the singing bowl 14 changes. According to the invention, this is taken into account by adapting the control of the drive motor 19 to the respective singing bowl 14. For this purpose, a reference run is carried out in which the drive motor 19 is set into a slow forward movement until the mallet head 16 comes into contact with the singing bowl 14. This leads to an increase in resistance, which is registered in the control unit 22. Starting from the stop position, the further positions that the mallet head 16 assumes in the course of a stop process can be determined in a suitable manner. In particular, a starting position, a distal end point, and a release point at which the drive motor 19 is put into the freewheeling state can be determined. In one embodiment, the stop device comprises a memory 29 in which sequence programs and user input are stored, see 6 .

A rotation angle decoder 30 is also arranged in the housing 31 of the drive motor 19, which supplies information about the current angular position of the drive shaft 32 to the control unit 22. By evaluating the data received from the rotation angle decoder 30, the control unit 22 can control the drive motor 19 so that the beater 15 is moved into certain predetermined positions. The power supply for the stop device is provided via a power supply unit 33, which is in 6 is shown schematically.

The stop device further comprises a radio module 35, via which the control unit 22 can enter into wireless communication with a smartphone 34. Input from a user into the smartphone 34 can be used in this way to control the drive motor 19. The user's input can, for example, relate to the hardness with which the singing bowl 14 should be struck. Furthermore, specific times or time sequences for striking the singing bowl 14 can be specified.

In the embodiment according to 5 A second operating unit 37 is additionally provided, which specifically belongs to the stop device. The operating unit 37 only has three buttons A, B, C, with which three programs stored in the memory 29 for striking the singing bowl 14 can be accessed. This enables particularly easy operation of the stop device, but requires that the program sequences have been transferred to the memory 29 in advance with the smartphone 34 and the keys A, B, C have been assigned to the programs. In addition, there are 5 several singing bowl coasters 36 arranged on the support surface 21 are shown. The singing bowl coasters 36 prepare the stop device for use with a small singing bowl 14.

In 7 a person 39 is shown using a singing bowl 14 according to the invention. The person 39 uses sensors 38 with which measurement data about certain body functions, such as heart rate, heart rate variability, breathing rate or oxygen content of the blood, are recorded. The measurement data is transmitted to the smartphone 34 via a radio connection. The drive motor 19 is controlled depending on the measurement data received. For example, if the heart rate increases, the rhythm at which the singing bowl 14 is struck can be changed. This results in a closed circle that extends from the sensors 38 via the smartphone 34 and the stop device back to the sensory organs of the person 39.

The feedback to the sensory organs of the person 39 can take place in such a way that the person 39 is provided with information about the recorded measurement data, for example by making certain changes audible through different attack intervals and volume levels. For example, the singing bowl 14 could be struck faster if the heart rate increases, and vice versa. A closed control loop is also possible in such a way that the smartphone 34 evaluates what effects certain attack sequences have on the measured values. It is then possible to preferably play back attack sequences which, for example, bring about a reduction in the heart rate.

In the embodiment according to 8th the person 39 lies on a lounger 40, on which the stop device according to the invention also stands. Sounds emitted by the singing bowl 14 are recorded with a microphone 44 and directed to an amplifier 42. With the amplifier 42, low frequencies of the sound spectrum are amplified and passed as excitation signals to structure-borne sound transducers 43 and to a subwoofer 41. Vibrations generated by the structure-borne sound transducers 43 are transmitted to the lounger 40 and the person 39. The person 39 is exposed to both the direct acoustic influence of the singing bowl 14 and the vibrations generated by the structure-borne sound transducers 43 and the subwoofer 41.

In 11 , 12 An embodiment is shown in which the singing bowl 14 is positioned on a turntable 48. A rotary drive 47 is formed between the frame structure 20 and the turntable 48, via which the turntable 48 can be rotated about a rotation axis 46 relative to the frame structure 20. The rotation movement is in 12 indicated with an arrow 45. The rotary drive 47 is also controlled by the control unit 22. By striking the singing bowl 14 in different areas of its edge, there is a slight variation in the sound spectrums, which is helpful for certain therapeutic applications.

Claims (12)

Stop device for a singing bowl (14), comprising a support surface (21) for the singing bowl (14), a drive motor (19), a beater (15) driven by the drive motor (19), a support surface (21) and the drive motor ( 19) connecting frame structure (20), and a control unit (22) for controlling the drive motor (19), the control unit (22) being designed to activate the drive motor (19) so that the beater (15) moves in the direction of Singing bowl (14) is accelerated and the drive motor (19) is switched to a freewheeling state before the mallet (15) comes into contact with the singing bowl (14). Stop device Claim 1 , whereby the drive motor (19) is a stepper motor. Stop device Claim 1 or 2 , wherein the mallet (15) has a shaft (17) and a mallet head (16), the shaft (17) being connected to a drive shaft (32) of the drive motor (19) and the mallet head (16) being connected to the singing bowl (14) is struck Stop device Claim 3 , wherein a shaft receptacle (18) is connected to the drive shaft (32) and wherein the shaft receptacle (8) comprises an adapter insert (28) adapted to the shaft (17). Stop device according to one of the Claims 1 until 4 , wherein the angle between the instantaneous direction of movement of the mallet head (16) when striking the singing bowl (14) and the radial direction of the singing bowl (14) is less than 20°, preferably less than 10°, more preferably less than 5°. Stop device Claim 5 , the distance between the beater head (16) and the drive shaft (32) of the drive motor (19) being adjustable. Stop device according to one of the Claims 1 until 6 , wherein the control unit (22) is designed to control a reference movement of the mallet (15) in order to determine the angular position of the drive motor (19) at which the mallet (15) comes into contact with the singing bowl (14). Stop device according to one of the Claims 1 until 7 , one or more sequence programs for controlling the drive motor (19) being stored in a memory. Stop device according to one of the Claims 1 until 8th , with a sensor (38) for a parameter of the human body, the control unit (22) being designed to control the drive motor (19) depending on measurement data recorded by the sensor (38). Stop device according to one of the Claims 1 until 9 , with a loudspeaker (41) and / or a structure-borne sound transducer (43), which are controlled depending on sound waves generated by the singing bowl (14). Stop device according to one of the Claims 1 until 10 , wherein the support surface (21) is arranged on a turntable (48) and a rotary drive (47) is arranged between the frame structure (20) and the turntable (48) in order to rotate the turntable (48) relative to the frame structure offset. Method for striking a singing bowl (14), in which a mallet (15) is connected to a drive motor (19), and in which the drive motor (19) is controlled in such a way that the mallet (15) points in the direction of the singing bowl (14). is accelerated and that the drive motor (19) is switched to a freewheeling state before the mallet (15) comes into contact with the singing bowl (14).

Images