CN202025524U - Digital sound emitting device of upright piano - Google Patents
Digital sound emitting device of upright piano Download PDFInfo
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- CN202025524U CN202025524U CN2011200471410U CN201120047141U CN202025524U CN 202025524 U CN202025524 U CN 202025524U CN 2011200471410 U CN2011200471410 U CN 2011200471410U CN 201120047141 U CN201120047141 U CN 201120047141U CN 202025524 U CN202025524 U CN 202025524U
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- sound box
- loudspeaker
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- piano
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Abstract
The utility model relates to a digital sound emitting device of an upright piano, which comprises a piano body (1) and horns (4), wherein the back part of the piano body (1) is provided with a hollow box body, a sound box plate (8) is transversely arranged in the hollow box body at the back part of the piano body (1), the hollow box body is divided into an upper sound box and a lower sound box by the sound box plate (8), the upper sound box is a high-frequency sound box (2), the lower sound box is a low-frequency sound box (3), a baffle plate (5) is arranged in the low-frequency sound box (3), two horn holes are arranged on the sound box plate (8), the horns (4) are respectively installed in each horn hole, and guide holes (6) are respectively arranged on the walls of the backing plates of a left sound box body and a right sound box body of the low-frequency sound box (3). According to the digital sound emitting device of the upright piano, the high-frequency sound box and the low-frequency sound box are separated by adopting the sound box plate, the low-frequency sound box is isolated into two box bodies by the baffle plate, the problems of phase interference of low-frequency sound and short circuit of the low-frequency sound are effectively solved, the tone quality is fine, the hierarchy is obvious, the digital sound emitting device of the upright piano has an encircling feel, and the intense acoustic shock to a hearer can be realized.
Description
Technical field
The utility model relates to a kind of sound-producing device, relates in particular to the digital sound-producing device of a kind of upright piano.
Background technology
When sound wave when frequency is low, the propagation of sound wave has very strong diffracting power, and is almost non-directional.Therefore the sound of loudspeaker can diffraction to the front of vibrating diaphragm, and should be preceding sound wave and the synthesizing of back sound wave at the sound that certain point in the place ahead of loudspeaker is heard.If two sound waves are identical in the phase place of this point, then this synthetic acoustic pressure increases; If two sound wave phase places are opposite, then the acoustic pressure of this point reduces, even is the zero sound of can't hear.At this moment phenomenon is similar to the phenomenon that short circuit makes electric voltage dropping, causes the sound short circuit.At different frequency, the phase differential difference of two sound waves, synthetic acoustic pressure is also different, caused the acoustic pressure uneven distribution of different frequency, cause the above-mentioned two kinds of phase interferences of phenomenon and the sound short circuit of phase interference, the phenomenon that show that mainly low-frequency sound is thin, fly away, muddiness etc. has a strong impact on tonequality, the quality of sound-producing device has directly influenced the quality of piano tonequality.
As Chinese patent publication No.: CN2036692U, the day for announcing: on Dec 26th, 1989, the utility model discloses a kind of novel upright piano, it has set up high frequency audio castanets and bass castanets on the basis of light-duty upright piano, two resonant tanks and a cover overtone hoisting gear, constitute high frequency sympathetic response audio amplifier by the high frequency audio castanets, also be provided with a cover electro-acoustic conversion device, loudspeaker is installed in the back side of sympathetic response audio amplifier.This qin range is wide, give great volume, tonequality is pure, have a beautiful tone, and expressive force is abundant, can play the musical works of various subject matters, is comparatively ideal solo, musical instrument accompaniment.But this device fails to solve effectively for the phase interference and the sound problem of short-circuit of different frequency sound, and the acoustic pressure skewness of different frequency, high-frequency sound and low-frequency sound still are easy to sound muddiness, unintelligible occur, even the phenomenon of audio distortions.
Summary of the invention
The purpose of this utility model is the acoustic pressure skewness at existing digital piano different frequency, sound phase interference and sound problem of short-circuit fail better to be solved, defective that acoustical quality is not good and deficiency, provide a kind of simple in structure, the acoustic pressure of different frequency is evenly distributed, the digital sound-producing device of the upright piano that acoustical quality is good.
For achieving the above object, technical solution of the present utility model is: the digital sound-producing device of upright piano, comprise the piano body, loudspeaker, the rear portion of piano body is a hollow box body, the sound boxboard of horizontally set in the hollow box body of described piano rear body, the sound boxboard is separated into two audio amplifiers up and down with hollow box body, top audio amplifier is a high frequency sound case, following audio amplifier is the all-bottom sound case, vertically be provided with dividing plate on the length direction in the all-bottom sound case, two sound casings about dividing plate is divided into the all-bottom sound case, symmetry offers two bellmouth orifices on the length direction of sound boxboard, loudspeaker all are installed in each bellmouth orifice, and the cone mouth of loudspeaker is upwards, and two loudspeaker are connected with the sounding controller respectively, on the backboard wall of all-bottom sound case about correspondence two sound casings offer pilot hole respectively.
The ratio of the sound of described all-bottom sound case and volume size is: 9 decibels: 10 cubic decimeters.
The volume of two sound casings of described all-bottom sound case is identical, and two loudspeaker are the high magnetic horn of the identical full range of power.
The volume of two sound casings of described all-bottom sound case is: long 699 millimeters, wide 304 millimeters, high 518 millimeters, the distance between two loudspeaker is 800 millimeters.
Described pilot hole is the oval hole.
The beneficial effects of the utility model are:
1. the utility model employing sound boxboard has been divided into high frequency sound case and the all-bottom sound case arranged up and down with the hollow box body of piano rear body, and utilize dividing plate that the all-bottom sound case has been divided into two casings, low-frequency sound phase interference and low-frequency sound problem of short-circuit have effectively been solved, on the backboard wall of two sound casings about the all-bottom sound case, offer a pilot hole respectively, the acoustic pressure of different frequency is evenly distributed, can play antihunt action when sound is very big, tonequality is very thin, well arranged Ambience.
2. the sound tonequality sent of the utility model is good, muddiness can not occur, and piano sound is simple and honest, bright, fine and smooth, clear, high pitch is more clear, bright, and high pitch and bass are well arranged simultaneously, also do not lose the simple and honest of bass, the tone color reduction effect is good, can give the hearer strong sense of hearing shock.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Among the figure: piano body 1, high frequency sound case 2, all-bottom sound case 3, loudspeaker 4, dividing plate 5, pilot hole 6, sounding controller 7, sound boxboard 8.
Embodiment
Below in conjunction with description of drawings and embodiment the utility model is described in further detail:
Referring to Fig. 1, the digital sound-producing device of upright piano of the present utility model, comprise piano body 1, loudspeaker 4, the rear portion of piano body 1 is a hollow box body, the sound boxboard 8 of horizontally set in the hollow box body at described piano body 1 rear portion, sound boxboard 8 is separated into two audio amplifiers up and down with hollow box body, top audio amplifier is a high frequency sound case 2, following audio amplifier is an all-bottom sound case 3, vertically be provided with dividing plate 5 on the length direction in the all-bottom sound case 3, two sound casings about dividing plate 5 is divided into all-bottom sound case 3, symmetry offers two bellmouth orifices on the length direction of sound boxboard 8, loudspeaker 4 all are installed in each bellmouth orifice, and the cone mouth of loudspeaker 4 is upwards, and two loudspeaker 4 are connected with sounding controller 7 respectively, on the backboard wall of all-bottom sound case 3 about correspondence two sound casings offer pilot hole 6 respectively.
The ratio of the sound of described all-bottom sound case 3 and volume size is: 9 decibels: 10 cubic decimeters.
The volume of two sound casings of described all-bottom sound case 3 is identical, and two loudspeaker 4 are the high magnetic horn of the identical full range of power.
The volume of two sound casings of described all-bottom sound case 3 is: long 699 millimeters, wide 304 millimeters, high 518 millimeters, the distance between two loudspeaker 4 is 800 millimeters.
Described pilot hole 6 is the oval hole.
The inner chamber middle part of piano body 1 is provided with sound boxboard 8, all-bottom sound case 3 is installed in the lower end of boxboard 8, the dividing plate 5 that the inner chamber middle part of all-bottom sound case 3 vertically is provided with, two isopyknic casees about being used for all-bottom sound case 3 is separated into, two sound channels are isolated, and the degree of depth, range that the front and back sound wave discharges are inequality.Dividing plate 5 is a high-density plate, makes high-frequency sound and not mutual interference mutually of low-frequency sound also effectively to have solved low-frequency sound phase interference and low-frequency sound problem of short-circuit.The lower end of all-bottom sound case 3 is fixed on the cavity that is provided with on piano body 1 base plate, helps the buffer action of all-bottom sound case 3 voiced processes to vibrations.
Above two loudspeaker 4, be provided with high frequency sound case 2, the cone opening of loudspeaker 4 faces high frequency sound case 2, be used to produce high-frequency sound, because high-frequency sound has directivity, therefore high frequency sound case 2 inside need not be provided with dividing plate and separate, and the high-frequency sound that high frequency sound case 2 sends spreads out of from the opening part of high frequency sound case 2 upper ends.All-bottom sound case 3 is after dividing plate 5 separates, and the length in space was 699 millimeters in it was single, and wide is 304 millimeters, and height is 518 millimeters.When two loudspeaker 4 are the high magnetic horn of full range of model of the same race, the volume equal and opposite in direction of two sound casings of all-bottom sound case 3.The sound casing is long-pending suitablely could to make that sound is simple and honest, is provided with pilot hole 6 and position, hole size is correct, and sound just can be very bright, the acoustical quality ideal.The ratio of the sound of all-bottom sound case 3 and volume size is: 9 decibels: 10 cubic decimeters, can reach best sounding effect this moment.
Claims (5)
1. the digital sound-producing device of upright piano, comprise piano body (1), loudspeaker (4), the rear portion of piano body (1) is a hollow box body, it is characterized in that: the sound boxboard of horizontally set (8) in the hollow box body at described piano body (1) rear portion, sound boxboard (8) is separated into two audio amplifiers up and down with hollow box body, top audio amplifier is a high frequency sound case (2), following audio amplifier is all-bottom sound case (3), vertically be provided with dividing plate (5) on the length direction in the all-bottom sound case (3), two sound casings about dividing plate (5) is divided into all-bottom sound case (3), symmetry offers two bellmouth orifices on the length direction of sound boxboard (8), loudspeaker (4) all are installed in each bellmouth orifice, and the cone mouth of loudspeaker (4) upwards, two loudspeaker (4) are connected with sounding controller (7) respectively, on the backboard wall of all-bottom sound case (3) about correspondence two sound casings offer pilot hole (6) respectively.
2. the digital sound-producing device of upright piano according to claim 1, it is characterized in that: the sound of described all-bottom sound case (3) and the ratio of volume size are: 9 decibels: 10 cubic decimeters.
3. the digital sound-producing device of upright piano according to claim 1, it is characterized in that: the volume of two sound casings of described all-bottom sound case (3) is identical, and two loudspeaker (4) are the high magnetic horn of the identical full range of power.
4. the digital sound-producing device of upright piano according to claim 3, it is characterized in that: the volume of two sound casings of described all-bottom sound case (3) is: long 699 millimeters, wide 304 millimeters, high 518 millimeters, the distance between two loudspeaker (4) is 800 millimeters.
5. the digital sound-producing device of upright piano according to claim 1 is characterized in that: described pilot hole (6) is the oval hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200471410U CN202025524U (en) | 2011-02-25 | 2011-02-25 | Digital sound emitting device of upright piano |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200471410U CN202025524U (en) | 2011-02-25 | 2011-02-25 | Digital sound emitting device of upright piano |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202025524U true CN202025524U (en) | 2011-11-02 |
Family
ID=44850468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200471410U Expired - Lifetime CN202025524U (en) | 2011-02-25 | 2011-02-25 | Digital sound emitting device of upright piano |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202025524U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102110434A (en) * | 2011-02-25 | 2011-06-29 | 湖北华都钢琴制造有限公司 | Digital sound production device of vertical piano |
| CN107240385A (en) * | 2017-06-30 | 2017-10-10 | 罗纳德·A·莫雷托·R | Piano shell and piano system |
-
2011
- 2011-02-25 CN CN2011200471410U patent/CN202025524U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102110434A (en) * | 2011-02-25 | 2011-06-29 | 湖北华都钢琴制造有限公司 | Digital sound production device of vertical piano |
| CN102110434B (en) * | 2011-02-25 | 2012-07-25 | 湖北华都钢琴制造有限公司 | Digital sound production device of vertical piano |
| CN107240385A (en) * | 2017-06-30 | 2017-10-10 | 罗纳德·A·莫雷托·R | Piano shell and piano system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20111102 Effective date of abandoning: 20130227 |
|
| RGAV | Abandon patent right to avoid regrant |