CN2371746Y - Music rhythm sensing loudspeaker with low-pass filter - Google Patents
Music rhythm sensing loudspeaker with low-pass filter Download PDFInfo
- Publication number
- CN2371746Y CN2371746Y CN 98232267 CN98232267U CN2371746Y CN 2371746 Y CN2371746 Y CN 2371746Y CN 98232267 CN98232267 CN 98232267 CN 98232267 U CN98232267 U CN 98232267U CN 2371746 Y CN2371746 Y CN 2371746Y
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- China
- Prior art keywords
- loud speaker
- pass filter
- music rhythm
- sensing music
- low
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- Expired - Fee Related
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Abstract
A music rhythm sensing loudspeaker with low-pass filter of the utility model is characterized in that a low-pass filter which can be an inductance element or an active low pass filter is arranged on the body of the music rhythm sensing loudspeaker. Ears of human are very sensitive to the high-frequency sound but insensitive to the low-frequency sound; the vibration of a loudspeaker diaphragm generated by the low frequency can be sensed by people, but the vibration of the loudspeaker diaphragm generated by the high frequency scarcely can be sensed by people. The high frequency in the music signal is filtered off, and thus the uncomfortable feel caused by the big volume when people want to enjoy more favorable effect of the music rhythm sensing loudspeaker is eliminated.
Description
The utility model relates to a kind of loud speaker that is provided with the sensing music rhythm of low pass filter, also or a kind of daily necessities of health care massage.
The major function of loud speaker is used to the sound of resetting, Chinese patent CN1075240 discloses a kind of loud speaker of body sense, it comprises that has the shell of two parts up and down, its center upper portion has a circular hole that fastens with top cover, the thin disk of a minor diameter, the inboard of concentric fixed roof, vibrate in order to respond solenoidal changes of magnetic field with an oscillating body on the tubular member, when oscillating body is fixed on the outer casing inner wall by the vibration ring, the upper and lower surface of oscillating body and shell form the gap between the two parts inner surfaces up and down, can respond the changes of magnetic field of alive solenoid coil and the easy on and off vibration at oscillating body.
This patent application can allow people can experience music rhythm rhythm innervation in music appreciating, but this patent application complex structure, and manufacturing cost is higher, is difficult for promoting the use of.
The patent application " a kind of loud speaker of sensing music rhythm " of together submitting with the utility model, a kind of loud speaker of making body sense music rhythm innervation simple, with low cost can be provided, it is to be coated with the foam-like filler on the vibrating diaphragm of loud speaker, overspread has one deck cloth shape fabric on foam, and its cloth shape fabric fixes by the retainer plate device of the bracket end of loudspeaker horn mouth.
It is by on the loud speaker body of at least one sensing music rhythm corresponding power amplifier being set that the patent application of together submitting with the utility model " is provided with the loud speaker of the sensing music rhythm of power amplifier ", allow people can drive the speaker operation of sensing music rhythm, thereby facilitate for people use the loud speaker of sensing music rhythm in the more location by small-power sound appliances such as resembling some small-sized walkmans, radio-cassette player.
More than two apply for a patent and face a problem in use: in order to experience the very beautiful sensation that loud speaker brought of sensing music rhythm better, people can be transferred to volume certain loudness in use, bring a kind of discomfort so just can for people's the sense of hearing.People can eliminate the influence of this discomfort by the mode of wearing earplug, but so very inconvenient.
Usually, loudness is pleasant subjective sensation to intensity of sound.People's ear is not only relevant with the sound intensity to the sensation of intensity of sound, and is also relevant with the frequency of sound.Sound intensity level is identical and sound that frequency is different sounds the loudness difference.That is people's ear has different sensitivity to the sound of different frequency.Usually people's ear is the most responsive to the sound in the 3000-4000Hz scope, and this is that external auditory meatus sympathetic response by people's ear causes.In all frequencies, people's ear is the sensitiveest to the impression of high frequency sound, by contrast, people's ear wants much blunt to the sensation of all-bottom sound, but low frequency signal can be produced as the vibration of the diaphragm of loudspeaker that human body experiences, and the vibration that high frequency produces by the diaphragm of loudspeaker hardly by people the sense of energy body.
The characteristic of inductance is: the induction reactance of inductance is directly proportional with frequency, inductance value and can stops high-frequency signal with less inductance, and allows low frequency signal pass through smoothly.The also available semiconducter simulation inductance of its inductance replaces, and it can add Resistor-Capacitor Unit by operational amplifier and realize.
The purpose of this utility model is by in the circuit of the loud speaker of sensing music rhythm low pass filter being set, and the high frequency of elimination voice signal allows people can not cause uncomfortable sensation because sound is excessive when using the loud speaker of sensing music rhythm.
The purpose of this utility model is achieved in that
A kind of loud speaker that is provided with the sensing music rhythm of low pass filter comprises the loud speaker body and the low pass filter of sensing music rhythm, and it is characterized in that: the loud speaker body of sensing music rhythm is provided with low pass filter.Described low pass filter is at least one inductance element that is cascaded with loud speaker.On the loud speaker body of its described sensing music rhythm power amplifier is not set, its input signal is the filtering of process inductance element earlier, and then be transported to loud speaker.The loud speaker body of its described sensing music rhythm is provided with power amplifier, and its input signal amplifies through the power amplifier of loud speaker body earlier, and then through inductance element filtering, is transported to loud speaker at last.
Described low pass filter is arranged on the active low-pass filter on the loud speaker body circuit of sensing music rhythm, the loud speaker body of its sensing music rhythm is provided with power amplifier, its input signal is earlier through active low-pass filter filtering, and then amplify through the power amplifier of loud speaker body, be transported to loud speaker at last, its active low-pass filter is LF353 integrated operational amplifier and Resistor-Capacitor Unit, and the power supply of its active low-pass filter is that the dividing voltage supply by the power amplifier circuit of the loud speaker body of sensing music rhythm provides.
The signal of Fig. 1, embodiment one transmits block diagram
The circuit theory diagrams of Fig. 2, embodiment one
The signal of Fig. 3, embodiment two transmits block diagram
The circuit theory diagrams of Fig. 4, embodiment two
The signal of Fig. 5, embodiment three transmits block diagram
The circuit theory diagrams of Fig. 6, embodiment three
Below in conjunction with drawings and Examples the utility model is further described
Embodiment one:
Fig. 1 is that its signal transmits block diagram, as shown in Figure 1, is transported to the loud speaker of sensing music rhythm after the filtering of input signal process low pass filter.As shown in Figure 2, inductance L and loud speaker RL are cascaded, and are sent to loud speaker RL after the filtering of input signal process inductance L, and the loud speaker of its sensing music rhythm is to adopt loud speaker for massaging power and power amplifier not being set;
Embodiment two:
Fig. 3 is that its signal transmits the square frame diagrammatic sketch, and as shown in Figure 3, input signal amplifies through the power amplifier on the loud speaker body of sensing music rhythm earlier, passes through low pass filter filtering then, is input to the loud speaker of sensing music rhythm at last.As shown in Figure 4, the loud speaker body of its sensing music rhythm is provided with power amplifier, and inductance L and loud speaker RL are cascaded, and after input signal amplifies through power amplifier earlier, and then through inductance L filtering, is transported to loud speaker RL at last.
Embodiment three:
Fig. 5 is that its signal transmits block diagram, as shown in Figure 5, and the filtering of input signal process low pass filter, and then after the power amplifier on the loud speaker body amplifies, be transported to the loud speaker of sensing music rhythm at last.As shown in Figure 6, a 3KHz active low-pass filter circuit, the 4 pin voltages of its operational amplifier LF353 are obtained by bleeder circuit, and its magnitude of voltage is half of Vcc.The cut-off frequency scope of filter, can by C13 (0.001), C11 (0.012), C12 (0.01) appoint select one and relevant resistance match (f0=1/2 RC) decide, but in case after change other two electric capacity also should make corresponding changes.The 7th, output, the 5th, positive input, the 6th, reverse input end, as shown in Figure 6, R13 (20k), R14 (10k) and C13 (0.001) form feedback circuit, R15 (150) is that the output lotus root is closed resistance, and C14 (0.1) is an isolation capacitance, and R11 (10k), R12 (10k) and C11 (0.012), C12 (0.01) form inlet circuit.
In this is novel, by the high frequency in the elimination music signal, can better eliminate people for the effect of the better loud speaker of experiencing sensing music rhythm with volume transfer the sensation of bigger caused discomfort.
Claims (11)
1, a kind of loud speaker that is provided with the sensing music rhythm of low pass filter comprises the loud speaker body and the low pass filter of sensing music rhythm, and it is characterized in that: the loud speaker body of sensing music rhythm is provided with low pass filter
2, the loud speaker of sensing music rhythm according to claim 1 is characterized in that described low pass filter is at least one inductance element that is cascaded with loud speaker.
3, the loud speaker of sensing music rhythm according to claim 2 is characterized in that on the loud speaker body of described sensing music rhythm power amplifier not being set.
4,, it is characterized in that input signal earlier through inductance element filtering, and then be transported to loud speaker according to the loud speaker of claim 2 or 3 described sensing music rhythms.
5, the loud speaker of sensing music rhythm according to claim 2 is characterized in that the loud speaker body of described sensing music rhythm is provided with power amplifier.
6,, it is characterized in that input signal amplifies through the power amplifier of loud speaker body earlier, and then, be transported to loud speaker at last through inductance element filtering according to the loud speaker of claim 2 or 5 described sensing music rhythms.
7, the loud speaker of sensing music rhythm according to claim 1 is characterized in that described low pass filter is arranged on the active low-pass filter on the loud speaker body circuit of sensing music rhythm.
8, the loud speaker of sensing music rhythm according to claim 7 is characterized in that the loud speaker body of described sensing music rhythm is provided with power amplifier.
9, according to the loud speaker of claim 7 or 8 described sensing music rhythms, it is characterized in that input signal earlier through active low-pass filter filtering, and then amplify through the power amplifier of loud speaker body, be transported to loud speaker at last.
10,, it is characterized in that described active low-pass filter is LF353 integrated operational amplifier and Resistor-Capacitor Unit according to the loud speaker of claim 7 or 8 described sensing music rhythms.
11, according to the loud speaker of claim 7 or 8 described sensing music rhythms, the power supply that it is characterized in that described active low-pass filter is that the dividing voltage supply by the power amplifier circuit of the loud speaker body of sensing music rhythm provides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98232267 CN2371746Y (en) | 1998-12-25 | 1998-12-25 | Music rhythm sensing loudspeaker with low-pass filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98232267 CN2371746Y (en) | 1998-12-25 | 1998-12-25 | Music rhythm sensing loudspeaker with low-pass filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2371746Y true CN2371746Y (en) | 2000-03-29 |
Family
ID=33981303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98232267 Expired - Fee Related CN2371746Y (en) | 1998-12-25 | 1998-12-25 | Music rhythm sensing loudspeaker with low-pass filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2371746Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101244310B (en) * | 2007-02-15 | 2010-12-01 | 李隆 | Music interference electric therapeutic equipment |
| CN101138664B (en) * | 2006-09-06 | 2010-12-01 | 李隆 | Music and biological information wave high-voltage electric field therapeutic equipment |
| CN109817238A (en) * | 2019-03-14 | 2019-05-28 | 百度在线网络技术（北京）有限公司 | Audio signal sample device, acoustic signal processing method and device |
-
1998
- 1998-12-25 CN CN 98232267 patent/CN2371746Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101138664B (en) * | 2006-09-06 | 2010-12-01 | 李隆 | Music and biological information wave high-voltage electric field therapeutic equipment |
| CN101244310B (en) * | 2007-02-15 | 2010-12-01 | 李隆 | Music interference electric therapeutic equipment |
| CN109817238A (en) * | 2019-03-14 | 2019-05-28 | 百度在线网络技术（北京）有限公司 | Audio signal sample device, acoustic signal processing method and device |
| CN109817238B (en) * | 2019-03-14 | 2021-08-24 | 百度在线网络技术（北京）有限公司 | Audio signal acquisition device, audio signal processing method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |