CN1258302C - Sound box using method - Google Patents
Sound box using method Download PDFInfo
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- CN1258302C CN1258302C CN 00115785 CN00115785A CN1258302C CN 1258302 C CN1258302 C CN 1258302C CN 00115785 CN00115785 CN 00115785 CN 00115785 A CN00115785 A CN 00115785A CN 1258302 C CN1258302 C CN 1258302C
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- sound
- bass
- frequency
- resonance frequency
- amplifier
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- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
Abstract
The present invention relates to a sound box using method. Three-dimensional systems in the prior art mostly adopt a 3D technique so as to obtain favorable bass effects; the three-dimensional system has three paths of output, a bass output part reproduces sound by using an extra bass sound box, and the frequency range is from 40Hz to 100Hz. In the sound box using method, two all-channel sound boxes which have extra bass sound reproduction effects are used to replace three sound boxes of the 3D system; the low-frequency resonance frequency of one of two small sound boxes is set to be low, the low-frequency resonance frequency of the other small sound box is set to be high, and the resonance frequency ratio of the two sound boxes is from 1.1 to 1.5. Bass is obtained through synthesis by the two sound boxes, and high-tone ingredients in a sound source produce sound according to an original channel; thus, the 3D system can obtain 3D sound with the extra bass effects.
Description
Technical field
The present invention relates to electroacoustic techniques, particularly relate to a kind of small-sized balanced bass stereo speaker system.
Background technology
In the research of electroacoustic techniques, people have had more research to the distortion and the frequency response of audio amplifier, but the bass effect that good low frequency tone color and little audio amplifier obtain is still relatively more difficult.As present general 3D technology, be with bass (40Hz～, though this method has obtained bass output, append a bass box, and much the super bass box mechanical q-value is too high, the playback muddiness 100Hz) by the output of middle road.Chinese patent ZL95111607.X discloses a kind of Q value equalization methods, its method is exactly the conscious technology of utilizing audio amplifier resonance, the frequency of system and the relation of the Q of system value have well been solved, the realization that sound system frequency and Q value are balanced, can make its sense of hearing tone color free adjustment, improve the playback effect of audio amplifier, system lays a good foundation for the small-sized balanced bass stereo speaker of the present invention.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of small-sized balanced bass stereo speaker system, and it both can save a super bass box, can avoid single the narrow problem of the high Q value resonance working range of super bass box low frequency again.
For solving the problems of the technologies described above, the small-sized balanced bass stereo speaker of the present invention system, comprise source of sound, frequency divider, equalizer amplifier, audio amplifier, described audio amplifier is super inverted phase type, wherein, described audio amplifier is 2 compact full road audio amplifiers, is respectively left voice box and right voice box, described 2 audio amplifiers are promoted by the middle and high frequency signal and the low frequency signal of left and right equalizer amplifier output respectively, and synthesize required supper bass in the audition space;
Described left voice box phase inverter resonance frequency is f
1, described right voice box phase inverter resonance frequency is f
2, f
1With f
2Between the pass be: f
2=(1.1～1.5) f
1
The resonance frequency f of described left equalizer amplifier
1' and left voice box phase inverter resonance frequency f
1Between the pass be: f
1'=(0.9～1) f
1
The resonance frequency f of described right equalizer amplifier
2' and right voice box phase inverter resonance frequency f
2Between the pass be: f
2'=(0.9～1) f
2
The small-sized balanced bass stereo speaker of the present invention system, be included in the stereo component system, it with the sound reproduction low frequency of sound system bottom frequency content be divided into 2 frequency ranges, respectively by about two compact full road audio amplifiers outputs, and synthesize required supper bass in the audition space; Its stereo component system comprises: source of sound, frequency divider, equalizer amplifier, about two compact full road audio amplifiers.
Described source of sound is usually known all kinds of audio-source, described frequency divider also is the electronic frequency distributor of using always, it has three tunnel outputs, be the medium-high frequency output of left road, output of right wing medium-high frequency and the output of middle road low frequency, the low frequency signal of delivering to left and right sides road is identical, the frequency content of low frequency output is the following signal of 300Hz in the source of sound, described equalizer amplifier has two, it has replaced 3 road amplifirers in the 3D technology, left side equalizer amplifier receives medium-high frequency signal and the low frequency signal by the road input of a frequency divider left side, right equalizer amplifier receives medium-high frequency signal and the low frequency signal by the input of frequency divider right wing, equalizer amplifier is being collectively referred to as of Q value amplitude balanced fore-lying device and conventional audio-frequency power amplifier, the structural shape of left and right sides road equalizer amplifier is identical, but its resonance frequency and Q value then require to set according to left and right sides sound box parameter and audition; Described audio amplifier is super inverted phase type, be characterized in the phase inverter overlength, box sizes is little, operating frequency is low, under audio amplifier resonance frequency working condition, acoustic energy reaches the electro-acoustic conversion efficiency height greatly, about two audio amplifiers do different resonance frequency points, to remedy single the narrow shortcoming of the high Q value resonance working range of audio amplifier low frequency, the signal of two equalizer amplifier outputs about left and right two audio amplifiers receive respectively.
The low frequency power output is big, sense of hearing good in order to reach, and its frequency of described audio amplifier Q value must be proofreaied and correct.
Left voice box: super paraphase structure, resonance frequency f
1, push the work forward by left equalizer amplifier, if when sound reproduction will be extended bass effect, then the resonance frequency f of left equalizer amplifier
1', should be a little less than f
1, f
1'=(0.9～1) f
1, f
1By the bass requirement of reality and the actual low frequency fan-out capability decision of audio amplifier.
Right voice box: super paraphase structure, resonance frequency f
2, push the work forward by right equalizer amplifier, if when sound reproduction will be extended bass effect, then the resonance frequency f of right equalizer amplifier
2', should be a little less than f
2, f
2'=(0.9～1) f
2, f
2By the bass requirement of reality and the actual low frequency fan-out capability decision of audio amplifier.
Because left voice box is at resonance frequency f
1The time Q value bigger, f
1The output acoustic pressure of point is also bigger, so left voice box sound output amplitude-frequency is at f
1To certain point between the 300Hz have significantly fall or the amplitude-frequency transition bad, fall a little resonance frequency point f so get left voice box in certain frequency sound level as right voice box
2, f
2Numerical value also must be in conjunction with the sense of hearing, the overall amplitude-frequency of sound equipment and overall low frequency fan-out capability are done suitably to adjust f
2=(1.1～1.5) f
1
Because in above-mentioned small-sized balanced bass stereo speaker system, adopted Q value equalization methods, conscious utilization the audio amplifier resonance technique, with about the synthetic bass effects that can obtain to enrich of two audio amplifiers output, save the super bass box in the 3D technology, can be widely used in sound system.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is the left voice box frequency response curve schematic diagram behind the small-sized balanced bass stereo speaker system equalization of the present invention;
Fig. 2 is the right voice box frequency response curve schematic diagram behind the small-sized balanced bass stereo speaker system equalization of the present invention;
Fig. 3 is the low frequency sound level effect schematic diagram after the left and right sides audio amplifier frequency response curve behind the small-sized balanced bass stereo speaker system equalization of the present invention superposes;
Fig. 4 is the supper bass frequency response curve of prior art 3D system and the comparison schematic diagram of Fig. 3;
Fig. 5 is a prior art 3D system block diagram;
Fig. 6 is the small-sized balanced bass stereo speaker system block diagram of the present invention.
Embodiment
By Fig. 1, Fig. 2, as can be known shown in Figure 3, the small-sized balanced bass stereo speaker of the present invention system, employing be super inverted phase type structure audio amplifier.After equilibrium, left voice box 10 has a resonance frequency point f
1, in the power bracket of low frequency 300Hz, having and significantly fall a little, it a little is f that this frequency is fallen
2Fall a f with the frequency of Fig. 1
2Be benchmark, as the resonance frequency point of right voice box 11, and in conjunction with the overall low frequency fan-out capability of the overall amplitude-frequency and the audio amplifier of the sense of hearing, sound equipment, suitable adjustment f
2, can obtain preferable low frequency acoustics.f
1With f
2Between the pass be: f
2=(1.1～1.5) f
1Fig. 3 be about the later sound level schematic diagrames of two audio amplifier 10,11 low frequencies stack, by diagram as can be known, about after two audio amplifier 10,11 low frequencies stacks, the synthetic video amplitude-frequency is milder, and satisfied low-frequency effect is arranged.
By shown in Figure 4, after left road low frequency output characteristic 41 and right wing low frequency output characteristic 42 are synthetic, form low frequency output characteristic 43, itself and 3D supper bass output characteristic basically identical promptly can save in the 3D technology and bass box, reach the bass effect of 3D technology.
Fig. 5 is the block diagram of the existing 3D technology of sound system, by diagram as can be known, source of sound 1 divides left and right sides two-way input stereo audio amplifirer 2 with audio signal, signal input frequency divider 3 after stereo amplifirer 2 will amplify, characteristics are that frequency divider 3 has three tunnel outputs, respectively signal is imported left alt case 4, right alt case 6 and super bass box 5, promoted each audio amplifier work.
Fig. 6 is the small-sized balanced bass stereo speaker system block diagram of the present invention, source of sound 1 divides two-way input frequency divider 7 with audio signal by illustrating as can be known, it is left road alt that frequency divider 7 has three tunnel outputs, right wing alt and middle road bass, be characterized in that left equalizer amplifier 8 receives left road alt signal and bass signal, right equalizer amplifier 9 receives right wing alt signal and bass signal, promote left voice box 10 and right voice box 11 work respectively, saved super bass box in the 3D technology.
The resonance frequency f of described left equalizer amplifier 8
1' and left voice box 10 phase inverter resonance frequency f
1Between the pass be: f
1'=(0.9～1) f
1
The resonance frequency f of described right equalizer amplifier 9
2' and right voice box 11 phase inverter resonance frequency f
2Between the pass be: f
2'=(0.9～1) f
2
Above-mentioned super phase inverted cabinet can be used the phase inverted cabinet or the sound wave tubular type audio amplifier equivalent substitution of the stronger passive radiator of resonance.
Comprehensively above-mentioned, the small-sized balanced bass stereo speaker of the present invention system, compare with existing 3D technology, saved super bass box, can obtain satisfied bass effect equally, reduced the cost of sound system, can be widely used in CD, VCD, DVD, amplify, computer sound box and other sound equipment field.
Claims (2)
1, a kind of small-sized balanced bass stereo speaker system, comprise source of sound, frequency divider, equalizer amplifier, audio amplifier, described audio amplifier is super inverted phase type, it is characterized in that: described audio amplifier is 2 compact full road audio amplifiers, be respectively left voice box (10) and right voice box (11), described 2 audio amplifiers are promoted by the middle and high frequency signal and the low frequency signal of left and right equalizer amplifier (8,9) output respectively, and synthesize required supper bass in the audition space;
Described left voice box (10) phase inverter resonance frequency is f
1, described right voice box (11) phase inverter resonance frequency is f
2, f
1With f
2Between the pass be: f
2=(1.1～1.5) f
1
The resonance frequency f of described left equalizer amplifier (8)
1' and left voice box (10) phase inverter resonance frequency f
1Between the pass be: f
1'=(0.9～1) f
1
The resonance frequency f of described right equalizer amplifier (9)
2' and right voice box (11) phase inverter resonance frequency f
2Between the pass be: f
2'=(0.9～1) f
2
2, small-sized balanced bass stereo speaker as claimed in claim 1 system, it is characterized in that: described super phase inverted cabinet adopts the phase inverted cabinet or the sound wave tubular type audio amplifier of the stronger passive radiator of resonance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00115785 CN1258302C (en) | 2000-05-19 | 2000-05-19 | Sound box using method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00115785 CN1258302C (en) | 2000-05-19 | 2000-05-19 | Sound box using method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1325257A CN1325257A (en) | 2001-12-05 |
| CN1258302C true CN1258302C (en) | 2006-05-31 |
Family
ID=4585227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00115785 Expired - Fee Related CN1258302C (en) | 2000-05-19 | 2000-05-19 | Sound box using method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1258302C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4063269B2 (en) | 2004-10-29 | 2008-03-19 | ヤマハ株式会社 | Audio amplifier and audio system |
| CN107734407A (en) * | 2017-10-23 | 2018-02-23 | 郭超 | A kind of portable sports type sound equipment |
-
2000
- 2000-05-19 CN CN 00115785 patent/CN1258302C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1325257A (en) | 2001-12-05 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060531 |