CN1153505C - Cross complementing sound enclosure with lower limitation of cavity frequency and low distortion - Google Patents
Cross complementing sound enclosure with lower limitation of cavity frequency and low distortion Download PDFInfo
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- CN1153505C CN1153505C CNB001051776A CN00105177A CN1153505C CN 1153505 C CN1153505 C CN 1153505C CN B001051776 A CNB001051776 A CN B001051776A CN 00105177 A CN00105177 A CN 00105177A CN 1153505 C CN1153505 C CN 1153505C
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Abstract
The present invention relates to a high-fidelity sound box, particularly to a cavity cross complementary sound box with the advantages of low lower frequency limit and small distortion. The sound box is composed of two or two groups of bass or mediant loudspeakers with identical or approximate characteristics and sheets, wherein each or each group of loudspeakers is respectively provided with a sound channel. The present invention is characterized in that the sound channel is composed of two cavities, the equivalent length is quarter of the wavelength of the resonant frequency of each loudspeaker, the other sound channel is composed of four cavities, and the equivalent length is three quarters of the wavelength of the resonant frequency of each loudspeaker. In this way, the present invention has the advantages of small low-frequency distortion of the sound box, very low lower frequency limit, flat sound pressure characteristic, obviously reduced volume of the sound box, sheet saving and reduced cost.
Description
The present invention be that March 25, application number in 1998 are 98106739.5 the applying date, name is called the dividing an application of application for a patent for invention of " cross complementary voice box that the lower-frequency limit low distortion is little ".
The present invention relates to a kind of Hi-Fi sound-box, particularly relate to the little cross complementary voice box of a kind of cavate lower-frequency limit low distortion.
Name is called the ZL93233925.5 patent of " cross complementary voice box ", a kind of audio amplifier that not only can scabble the resonance peak of loud speaker but also can make the acoustic pressure cross complementary of each frequency has been proposed, feature is to use two medium and low spectrum loudspeakers, each loud speaker respectively has a sound passage, and the length of a passage is the quarter-wave of its harmonic frequency of loudspeakers, and is 3 times of another passage length.Though this audio amplifier can make the acoustic pressure cross complementary of each frequency, but because of only having scabbled the resonance peak of a loud speaker, the resonance peak of another loud speaker exists in the same old way, cause low-frequency distortion not enough little, the low-frequency sound pressure characteristic is also smooth inadequately, and the following acoustic pressure of resonance frequency fails to be fully used, and causes lower-frequency limit also low inadequately.
Purpose of the present invention provides the little cross complementary voice box of a kind of cavate lower-frequency limit low distortion.It is under the prerequisite of significantly dwindling the audio amplifier volume, can realize each frequency acoustic pressure cross complementary, also can scabble the resonance peak of each bass or medium and low spectrum loudspeaker simultaneously, not only low-frequency distortion is very little, the low-frequency sound pressure characteristic is smooth, and the following acoustic pressure of resonance frequency can be fully used, and has low-down lower-frequency limit.
The present invention is made of the identical or close bass of two or two groups of characteristics or medium and low spectrum loudspeaker and sheet material, each or every group of loud speaker have a sound passage, feature is that passage is made up of two cavitys, equivalent length is the quarter-wave of its harmonic frequency of loudspeakers, another passage is made up of four cavitys, equivalent length is four/three-wavelength of its harmonic frequency of loudspeakers, and the cross-sectional area of every passage cavity is all greater than the cone effective area of its loud speaker.
Because the quarter-wave that passage equivalent length is its harmonic frequency of loudspeakers, another passage equivalent length is four/three-wavelength of its harmonic frequency of loudspeakers, and the cross-sectional area of every passage cavity is all greater than the cone effective area of its loud speaker, so can scabble the resonance peak of each loud speaker, and the following low-frequency sound pressure of harmonic frequency of loudspeakers is fully used, also can makes the acoustic pressure cross complementary of each frequency.Therefore, audio amplifier of the present invention not only low-frequency distortion is very little, and lower-frequency limit is very low, and sound pressure characteristic is very smooth.The origin of its " cross complementary voice box that cavate lower-frequency limit low distortion is little " title that Here it is.
Because the sound passage of audio amplifier of the present invention is equivalent length, although each cavity cross-sectional area greater than the cone effective area of its loud speaker, still can make the audio amplifier volume reduce significantly, so can save sheet material, reduces cost, and is particularly suitable for family, individual or subsection and uses.
Accompanying drawing 1 is a principle schematic of the present invention.
Accompanying drawing 2, accompanying drawing 3, accompanying drawing 4 are respectively that the structure of three embodiment of the present invention is cutd open and shown schematic diagram.
Below in conjunction with drawings and Examples the present invention is described in further detail:
The little cross complementary voice box of cavate lower-frequency limit low distortion shown in Figure 1, by first loud speaker 1, second loud speaker 2 and sheet material 5 constitute, wherein first loud speaker 1 is identical or close bass of characteristic or medium and low spectrum loudspeaker with second loud speaker 2, it can be single loud speaker, it also can be the set of speakers that many loud speakers are composited, first loud speaker 1 and sheet material 5 are formed first passage 6, second loud speaker 2 and sheet material 5 are formed rising tone passage 7, feature is: first passage 6 is divided into two cavitys, rising tone passage 7 is divided into four cavitys, each cavity respectively has an outlet, adjust the cavity outlet size of first passage 6, the equivalent length that can make first passage 6 is the quarter-wave of first loud speaker, 1 resonance frequency, adjust the cavity outlet size of rising tone passage 7, the equivalent length that can make rising tone passage 7 is four/three-wavelength of second loud speaker, 2 resonance frequencys; The cavity cross-sectional area of first passage 6 is greater than the cone effective area of first loud speaker 1, and the cavity cross-sectional area of rising tone passage 7 is greater than the cone effective area of second loud speaker 2.
Because the equivalent length of first passage 6 is the quarter-wave of first loud speaker, 1 resonance frequency, the equivalent length of rising tone passage 7 is four/three-wavelength of second loud speaker, 2 resonance frequencys, and the cavity cross-sectional area of first passage 6 is greater than the cone effective area of first loud speaker 1, the cavity cross-sectional area of rising tone passage 7 is greater than the cone effective area of second loud speaker 2, so can scabble the resonance peak of first loud speaker 1 and second loud speaker 2, the following low-frequency sound pressure of first loud speaker 1 and second loud speaker, 2 resonance frequencys is fully used, also can makes the acoustic pressure cross complementary of each frequency.Therefore, audio amplifier of the present invention not only low-frequency distortion is very little, and lower-frequency limit is very low, and sound pressure characteristic is very smooth.
Because first loud speaker 1 is identical or close bass of characteristic or medium and low spectrum loudspeaker with second loud speaker 2, so its resonance frequency is lower, the wavelength of respective resonant frequencies is long, cause the length of first passage 6 and rising tone passage 7 also long, but because first passage 6 is divided into two cavitys, rising tone passage 7 is divided into four cavitys, significantly shortened the physical length of first passage 6 and rising tone passage 7, although the cavity cross-sectional area of first passage 6 is greater than the cone effective area of first loud speaker 1, the cavity cross-sectional area of rising tone passage 7 is greater than the cone effective area of second loud speaker 2, the audio amplifier volume is reduced significantly, can save sheet material, reduce cost.So audio amplifier of the present invention is particularly suitable for family or the individual uses.
Fig. 2 is by first loud speaker 1, the little cross complementary voice box 8 of cavate lower-frequency limit low distortion that is specifically designed to the playback mega bass that second loud speaker 2 and sheet material 5 constitute, wherein first loud speaker 1 is the identical or close bass loudhailer of characteristic with second loud speaker 2, it can be single loud speaker, it also can be the set of speakers that many loud speakers are composited, first loud speaker 1 and sheet material 5 are formed first passage 6, second loud speaker 2 and sheet material 5 are formed rising tone passage 7, feature is: first passage 6 is divided into two cavitys, rising tone passage 7 is divided into four cavitys, and each cavity respectively has an outlet; First loud speaker 1 places the panel top of audio amplifier 8, and second loud speaker 2 places the panel bottom of audio amplifier 8; The outlet of first passage 6 places the backboard top of audio amplifier 8, and the outlet of rising tone passage 7 places the backboard bottom of audio amplifier 8; The equivalent length of first passage 6 is the quarter-wave of first loud speaker, 1 resonance frequency, and the equivalent length of rising tone passage 7 is four/three-wavelength of second loud speaker, 2 resonance frequencys; The cavity cross-sectional area of first passage 6 is greater than the cone effective area of first loud speaker 1, and the cavity cross-sectional area of rising tone passage 7 is greater than the cone effective area of second loud speaker 2.
Fig. 3 is by first loud speaker 1, second loud speaker 2, the little cross complementary voice box 9 of two frequency division gamut cavate lower-frequency limit low distortions that high pitch loudspeaker 4 and sheet material 5 constitute, wherein first loud speaker 1 is the identical or close medium and low spectrum loudspeaker of characteristic with second loud speaker 2, it can be single loud speaker, it also can be the set of speakers that many loud speakers are composited, high pitch loudspeaker 4 can be a single loud speaker, it also can be the set of speakers that many loud speakers are composited, first loud speaker 1 and sheet material 5 are formed first passage 6, second loud speaker 2 and sheet material 5 are formed rising tone passage 7, feature is: first passage 6 is divided into two cavitys, rising tone passage 7 is divided into four cavitys, and each cavity respectively has an outlet; First loud speaker 1 places audio amplifier 9 panel tops, and second loud speaker 2 places audio amplifier 9 panel bottoms, and high pitch loudspeaker 4 places the panel middle part of audio amplifier 9 and is in the rising tone passage 7; The back of high pitch loudspeaker 4 is a full-closed structure; The outlet of first passage 6 places the backboard top of audio amplifier 9, and the outlet of rising tone passage 7 places the backboard bottom of audio amplifier 9; The equivalent length of first passage 6 is the quarter-wave of first loud speaker, 1 resonance frequency, and the equivalent length of rising tone passage 7 is four/three-wavelength of second loud speaker, 2 resonance frequencys; The cavity cross-sectional area of first passage 6 is greater than the cone effective area of first loud speaker 1, and the cavity cross-sectional area of rising tone passage 7 is greater than the cone effective area of second loud speaker 2.
Fig. 4 is by first loud speaker 1, second loud speaker 2, Squawker 3, the little cross complementary voice box 10 of three frequency division gamut lower-frequency limit low distortion that high pitch loudspeaker 4 and sheet material 5 constitute, wherein first loud speaker 1 is the identical or close woofer of characteristic with second loud speaker 2, it can be single loud speaker, it also can be the set of speakers that many loud speakers are composited, Squawker 3, high pitch loudspeaker 4 can be a single loud speaker, it also can be the set of speakers that many loud speakers are composited, first loud speaker 1 and sheet material 5 are formed first passage 6, second loud speaker 2 and sheet material 5 are formed rising tone passage 7, feature is: first passage 6 is divided into two cavitys, rising tone passage 7 is divided into four cavitys, and each cavity respectively has an outlet; First loud speaker 1 places audio amplifier 10 panel tops, second loud speaker 2 places audio amplifier 10 panel bottoms, high pitch loudspeaker 4 places between second loud speaker 2 and the Squawker 3 and is in the rising tone passage 7, and Squawker 3 places between the high pitch loudspeaker 4 and first loud speaker 1 and is in the rising tone passage 7; The back of high pitch loudspeaker 4, Squawker 3 is a full-closed structure; The outlet of first passage 6 places the backboard top of audio amplifier 10, and the outlet of rising tone passage 7 places the backboard bottom of audio amplifier 10; The equivalent length of first passage 6 is the quarter-wave of first loud speaker, 1 resonance frequency, and the equivalent length of rising tone passage 7 is four/three-wavelength of second loud speaker, 2 resonance frequencys; The cavity cross-sectional area of first passage 6 is greater than the cone effective area of first loud speaker 1, and the cavity cross-sectional area of rising tone passage 7 is greater than the cone effective area of second loud speaker 2.
Claims (8)
1, a kind of little cross complementary voice box (8) of cavate lower-frequency limit low distortion that is exclusively used in the playback mega bass, by first loud speaker (1), second loud speaker (2) and sheet material (5) constitute, first loud speaker (1) is the identical or close woofer of characteristic with second loud speaker (2), it can be single loud speaker, it also can be the set of speakers that many loud speakers are composited, first loud speaker (1) and sheet material (5) are formed first passage (6), second loud speaker (2) and sheet material (5) are formed rising tone passage (7), feature is: first passage (6) is divided into first, the second two cavitys, rising tone passage (7) is divided into the 3rd, the 4th, the 5th, the six or four cavity, each cavity respectively have an outlet; First, second cavity places audio amplifier (8) top, and first cavity ranks forefront, and second cavity leans backward, three, the 4th cavity places audio amplifier (8) middle part, and the 3rd cavity ranks forefront, and the 4th cavity leans backward, five, the 6th cavity places audio amplifier (8) bottom, and the 5th cavity ranks forefront, and the 6th cavity leans backward; The back of first loud speaker (1) and the coupling of first cavity, the outlet of first cavity and the coupling of second cavity, the outlet and the case of second cavity are coupled outward, the back of second loud speaker (2) and the coupling of the 5th cavity, the outlet of the 5th cavity and the coupling of the 3rd cavity, the outlet of the 3rd cavity and the coupling of the 4th cavity, the outlet of the 4th cavity and the coupling of the 6th cavity, the outlet and the case of the 6th cavity are coupled outward; Transfer the outlet size of first, second cavity, the equivalent length that makes first passage (6) is the quarter-wave of first loud speaker (1) resonance frequency, transfer the outlet size of the 3rd, the 4th, the 5th, the 6th cavity, the equivalent length that makes rising tone passage (7) is four/three-wavelength of second loud speaker (2) resonance frequency; The cross-sectional area of first, second cavity is greater than the cone effective area of first loud speaker (1), and the cross-sectional area of the 3rd, the 4th, the 5th, the 6th cavity is greater than the cone effective area of second loud speaker (2).
2, a kind of little cross complementary voice box (9) of gamut cavate lower-frequency limit low distortion of two frequency divisions, by first loud speaker (1), second loud speaker (2), high pitch loudspeaker (4) and sheet material (5) constitute, first loud speaker (1) is the identical or close medium and low spectrum loudspeaker of characteristic with second loud speaker (2), it can be single loud speaker, it also can be the set of speakers that many loud speakers are composited, high pitch loudspeaker (4) can be a single loud speaker, it also can be the set of speakers that many loud speakers are composited, first loud speaker (1) and sheet material (5) are formed first passage (6), second loud speaker (2) and sheet material (5) are formed rising tone passage (7), feature is: first passage (6) is divided into first, the second two cavitys, rising tone passage (7) is divided into the 3rd, the 4th, the 5th, the six or four cavity, each cavity respectively have an outlet; First, second cavity places audio amplifier (9) top, and first cavity ranks forefront, and second cavity leans backward, three, the 4th cavity places audio amplifier (9) middle part, and the 3rd cavity ranks forefront, and the 4th cavity leans backward, five, the 6th cavity places audio amplifier (9) bottom, and the 5th cavity ranks forefront, and the 6th cavity leans backward; The back of first loud speaker (1) and the coupling of first cavity, the outlet of first cavity and the coupling of second cavity, the outlet and the case of second cavity are coupled outward, the back of second loud speaker (2) and the coupling of the 5th cavity, the outlet of the 5th cavity and the coupling of the 3rd cavity, the outlet of the 3rd cavity and the coupling of the 4th cavity, the outlet of the 4th cavity and the coupling of the 6th cavity, the outlet and the case of the 6th cavity are coupled outward; Transfer the outlet size of first, second cavity, the equivalent length that makes first passage (6) is the quarter-wave of first loud speaker (1) resonance frequency, transfer the outlet size of the 3rd, the 4th, the 5th, the 6th cavity, the equivalent length that makes rising tone passage (7) is four/three-wavelength of second loud speaker (2) resonance frequency; The cross-sectional area of first, second cavity is greater than the cone effective area of first loud speaker (1), and the cross-sectional area of the 3rd, the 4th, the 5th, the 6th cavity is greater than the cone effective area of second loud speaker (2).
3, a kind of little cross complementary voice box (10) of gamut cavate lower-frequency limit low distortion of three frequency division, by first loud speaker (1), second loud speaker (2), Squawker (3), high pitch loudspeaker (4) and sheet material (5) constitute, first loud speaker (1) is the identical or close woofer of characteristic with second loud speaker (2), it can be single loud speaker, it also can be the set of speakers that many loud speakers are composited, Squawker (3), high pitch loudspeaker (4) can be a single loud speaker, it also can be the set of speakers that many loud speakers are composited, first loud speaker (1) and sheet material (5) are formed first passage (6), second loud speaker (2) and sheet material (5) are formed rising tone passage (7), feature is: first passage (6) is divided into first, the second two cavitys, rising tone passage (7) is divided into the 3rd, the 4th, the 5th, the six or four cavity, each cavity respectively have an outlet; First, second cavity places audio amplifier (10) top, and first cavity ranks forefront, and second cavity leans backward, three, the 4th cavity places audio amplifier (10) middle part, and the 3rd cavity ranks forefront, and the 4th cavity leans backward, five, the 6th cavity places audio amplifier (10) bottom, and the 5th cavity ranks forefront, and the 6th cavity leans backward; The back of first loud speaker (1) and the coupling of first cavity, the outlet of first cavity and the coupling of second cavity, the outlet and the case of second cavity are coupled outward, the back of second loud speaker (2) and the coupling of the 5th cavity, the outlet of the 5th cavity and the coupling of the 3rd cavity, the outlet of the 3rd cavity and the coupling of the 4th cavity, the outlet of the 4th cavity and the coupling of the 6th cavity, the outlet and the case of the 6th cavity are coupled outward; Transfer the outlet size of first, second cavity, the equivalent length that makes first passage (6) is the quarter-wave of first loud speaker (1) resonance frequency, transfer the outlet size of the 3rd, the 4th, the 5th, the 6th cavity, the equivalent length that makes rising tone passage (7) is four/three-wavelength of second loud speaker (2) resonance frequency; The cross-sectional area of first, second cavity is greater than the cone effective area of first loud speaker (1), and the cross-sectional area of the 3rd, the 4th, the 5th, the 6th cavity is greater than the cone effective area of second loud speaker (2).
4, the little cross complementary voice box (8) of cavate lower-frequency limit low distortion that is exclusively used in the playback mega bass according to claim 1, it is characterized in that: first loud speaker (1) places audio amplifier (8) panel top, second loud speaker (2) places audio amplifier (8) panel bottom, the outlet of first passage (6) places audio amplifier (8) backboard top, and the outlet of rising tone passage (7) places audio amplifier (8) backboard bottom.
5, the little cross complementary voice box (9) of gamut cavate lower-frequency limit low distortion of two frequency divisions according to claim 2, it is characterized in that: first loud speaker (1) places audio amplifier (9) panel top, second loud speaker (2) places audio amplifier (9) panel bottom, the outlet of first passage (6) places audio amplifier (9) backboard top, the outlet of rising tone passage (7) places audio amplifier (9) backboard bottom, high pitch loudspeaker (4) places audio amplifier (9) panel middle part, and the back is in the 3rd cavity of rising tone passage (7).
6, the little cross complementary voice box (10) of gamut cavate lower-frequency limit low distortion of three frequency division according to claim 3, it is characterized in that: first loud speaker (1) places audio amplifier (10) panel top, second loud speaker (2) places audio amplifier (10) panel bottom, the outlet of first passage (6) places audio amplifier (10) backboard top, the outlet of rising tone passage (7) places audio amplifier (10) backboard bottom, high pitch loudspeaker (4) places between second loud speaker (2) and the Squawker (3), the back is in the 3rd cavity of rising tone passage (7), Squawker (3) places between first loud speaker (1) and the high pitch loudspeaker (4), and the back is in the 3rd cavity of rising tone passage (7).
7, the little cross complementary voice box (9) of gamut cavate lower-frequency limit low distortion of two frequency divisions according to claim 2, the back that it is characterized in that high pitch loudspeaker (4) is a full-closed structure.
8, the little cross complementary voice box (10) of gamut cavate lower-frequency limit low distortion of three frequency division according to claim 3 is characterized in that the back of Squawker (3), high pitch loudspeaker (4) is a full-closed structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001051776A CN1153505C (en) | 2000-04-15 | 2000-04-15 | Cross complementing sound enclosure with lower limitation of cavity frequency and low distortion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001051776A CN1153505C (en) | 2000-04-15 | 2000-04-15 | Cross complementing sound enclosure with lower limitation of cavity frequency and low distortion |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98106739A Division CN1057187C (en) | 1998-03-25 | 1998-03-25 | Cross complementary voice box with low frequency lower limit and small distortion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1283066A CN1283066A (en) | 2001-02-07 |
| CN1153505C true CN1153505C (en) | 2004-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001051776A Expired - Fee Related CN1153505C (en) | 2000-04-15 | 2000-04-15 | Cross complementing sound enclosure with lower limitation of cavity frequency and low distortion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1153505C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE112007003701B4 (en) * | 2007-11-26 | 2016-10-27 | Nokia Technologies Oy | Acoustic chamber for an electronic device |
| US10812895B2 (en) | 2016-12-14 | 2020-10-20 | Dolby Laboratories Licensing Corporation | Multi-driver loudspeaker with cross-coupled dual wave-columns |
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2000
- 2000-04-15 CN CNB001051776A patent/CN1153505C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1283066A (en) | 2001-02-07 |
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