CN2622955Y - Measurer for telephone loudness - Google Patents
Measurer for telephone loudness Download PDFInfo
- Publication number
- CN2622955Y CN2622955Y CN 02288449 CN02288449U CN2622955Y CN 2622955 Y CN2622955 Y CN 2622955Y CN 02288449 CN02288449 CN 02288449 CN 02288449 U CN02288449 U CN 02288449U CN 2622955 Y CN2622955 Y CN 2622955Y
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- Prior art keywords
- telephone set
- phone
- circuit
- measurement device
- acoustic pressure
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- Expired - Lifetime
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- 238000005259 measurement Methods 0.000 claims abstract description 24
- 238000001514 detection method Methods 0.000 claims abstract description 20
- 230000005236 sound signal Effects 0.000 claims abstract description 15
- 230000005540 biological transmission Effects 0.000 claims description 22
- 230000005284 excitation Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
The utility model relates to a measurer for telephone loudness, comprising an audio signal source, an electric meter. The utility model is characterized in that a detection unit of sound wave receiving/voltage transmitting of telephone is also included, wherein the input end is connected with the audio signal source circuit, while the output end is connected with the input end circuit of a DC voltage generating unit, the output end of which is connected with the circuit of the electric meter, so the received sound wave and the transmitted output voltage of the telephone equipment can be detected conveniently. The utility model is of light structure, convenience and practicability and accurate measurement, not only can be applied indoors, but also can be applied to different production field of industrial enterprises.
Description
Technical field
The utility model relates to a kind of phone loudness measurement device, specifically, relates to a kind of phone loudness measurement device that can be used for the loudness test of multiple telephone equipment.
Background technology
The transmitting-receiving loudness of telephone plant is an one important techniques index, and it directly reflects telephone plant sound quality in use, is the foundation of differentiating the telephone plant quality.Measure the transmitting-receiving loudness index of telephone plant, two kinds of methods are generally arranged at present, a kind of method is instrument combines such as signal generator, level meter, feed bridge to be got up some index of telephone plant receiving and transmitting signal is tested item by item; Another is to utilize the electroacoustical measurement instrument of telephone set special use to measure.But above-mentioned two kinds of ways exist all that the measuring instrument volume is big, Heavy Weight, measurement environment require high defective, so be only applicable to indoor measurement.And can't adapt to industrial enterprise often needs in the production scene industrial wired communication equipment is carried out the needs that failure diagnosis and equipment are adjusted.
Summary of the invention
The utility model purpose is to provide a kind of phone loudness measurement device, it can measure the acoustic pressure of telephone plant reception and the output voltage of transmission easily, and structure is light and handy, convenient and practical, measure accurately, not only can be in indoor use, and can adapt to the different production scenes of industrial enterprise.
For achieving the above object, the technical solution of the utility model is: a kind of phone loudness measurement device is provided, it comprises an audio signal source, one ammeter, characteristics are, also comprise a telephone set and receive acoustic pressure/transmission voltage detection unit, and its input is connected with described audio signal source circuit, output is connected with the inlet circuit of a direct current voltage generating unit, and this direct voltage generation unit output is connected with described meter circuit.This telephone set receives acoustic pressure/transmissions voltage detection unit and comprises one first selector switch, and wherein one grade and the telephone set of this switch receive the acoustic pressure detection cell circuit and be connected, its another grade be connected with telephone set transmission voltage detection unit circuit.The direct voltage generation unit comprises a band pass filter, one second selector switch, this selector switch wherein one grade connect a linear rectifier by one first amplifier, its another shelves directly are connected with this linear rectifier circuit.
Like this, when telephone received signal, the utility model needs a signal of telecommunication and is added on the circuit of tested telephone set in order to measure the acoustic pressure that phone received, the receiver of tested telephone set can be sounded under this signal excitation, and the intensity of this sound is the reception acoustic pressure that will measure.Measurement is produced by audio signal source with the signal of telecommunication, and first selector switch connects the reception acoustic pressure detecting unit of telephone set, and the receiver of tested telephone set produces acoustical signal, and acoustical signal converts the signal of telecommunication to through the reception acoustic pressure detecting unit of telephone set.At this moment, second selector switch connects first amplifier, and like this, the signal of telecommunication shows that by ammeter the ammeter show value is the reception acoustic pressure of tested telephone set by band pass filter, first amplifier, linear rectifier.When measuring the transmission output voltage, need an acoustical signal and be added on the transmitter of tested telephone set, on the circuit of tested telephone set under this signal excitation, can produce the signal of telecommunication, the voltage amplitude of this signal of telecommunication is the transmission output voltage that will measure.Audio signal source produces a signal of telecommunication during measurement, first selector switch connects the transmission voltage detection unit of telephone set, the signal of telecommunication produces a measurement acoustical signal through the transmission voltage detection unit conversion of telephone set, acoustical signal is added on the transmitter of telephone set then.Tested telephone set can produce the signal of telecommunication on the line under the excitation of acoustical signal, at this moment, second selector switch is connected with the linear rectifier direct circuit, and this signal of telecommunication is by band pass filter, linear rectifier, show that by ammeter the ammeter show value is the transmission output voltage of tested telephone set.
Described telephone set receives the acoustic pressure detecting unit and comprises an artificial ear, and described telephone set sends voltage detection unit and comprises an artificial mouth;
Further, behind audio signal source, also can connect one second amplifier, after amplifying in order to the signal of telecommunication that audio signal source is produced, be input in the subsequent conditioning circuit, make its output amplitude satisfy measurement requirement.
Effect of the present utility model is: can measure the acoustic pressure that telephone plant receives and the output voltage of transmission easily, and structure is light and handy, convenient and practical, measure accurately, not only can be in indoor use, and can adapt to the different production scenes of industrial enterprise.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
Following according to Fig. 1, a better embodiment of the present utility model is described.
As shown in Figure 1, phone loudness measurement device of the present utility model, it comprises an audio signal source 1, one ammeter 5, also comprise a telephone set and receive acoustic pressure/transmission voltage detection unit 3, its input is connected with described audio signal source 1 circuit by one second amplifier 2, and output is connected with the inlet circuit of a direct current voltage generating unit 4, and the output of this direct voltage generation unit 4 is connected with described ammeter 5 circuit.Telephone set receives acoustic pressure/transmission voltage detection unit 3 and comprises one first selector switch 31, this switch wherein one grade be connected with reception acoustic pressure detecting unit 32 circuit of telephone set 34, transmission voltage detection unit 33 circuit of its another grade and telephone set 34 are connected.Direct voltage generation unit 4 comprises a band pass filter 41, one second selector switches 42, this selector switch 42 wherein one grade connect a linear rectifier 44 by one first amplifier 43, its another shelves directly are connected with these linear rectifier 44 circuit.
Like this, when phone 34 received signals, the utility model is in order to measure the acoustic pressure that telephone set 34 is received, needing a signal of telecommunication is added on the circuit of tested telephone set 34, the receiver of tested telephone set 34 can be sounded under this signal excitation, and the intensity of this sound is the reception acoustic pressure that will measure.Measure and use the signal of telecommunication to be produced by audio signal source 1, first selector switch 31 connects the reception acoustic pressure detecting unit 32 of telephone sets, and the receiver of tested telephone set 34 produces acoustical signal, and acoustical signal converts the signal of telecommunication to through the reception acoustic pressure detecting unit 32 of telephone set 34.At this moment, second selector switch 42 connects first amplifier 43, and like this, the signal of telecommunication shows that by ammeter 5 show value of ammeter 5 is the reception acoustic pressure of tested telephone set 34 by band pass filter 41, first amplifier 43, linear rectifier 44.When measuring the transmission output voltage, need an acoustical signal and be added on the transmitter of tested telephone set 34, on the circuit of tested telephone set 34 under this signal excitation, can produce the signal of telecommunication, the voltage amplitude of this signal of telecommunication is the transmission output voltage that will measure.Audio signal source produces 1 one signals of telecommunication during measurement, first selector switch 31 connects the transmission voltage detection unit 33 of telephone set, the signal of telecommunication produces a measurement acoustical signal through transmission voltage detection unit 33 conversions of telephone set 34, acoustical signal is added on the transmitter of telephone set 34 then.Tested telephone set 34 can produce the signal of telecommunication on the line under the excitation of acoustical signal, at this moment, second selector switch 42 is connected with linear rectifier 44 direct circuits, this signal of telecommunication is by band pass filter 41, linear rectifier 44, show that by ammeter 5 show value of ammeter 5 is the transmission output voltage of tested telephone set 34.
It is an artificial ear that described telephone set receives acoustic pressure detecting unit 32, and it is an artificial mouth that described telephone set sends voltage detection unit 33.
Claims (8)
1. phone loudness measurement device, it comprises an audio signal source, one ammeter, it is characterized in that, also comprise a telephone set that connects with circuit successively and receive acoustic pressure/transmission voltage detection unit, one direct current voltage generating unit, the input that described telephone set receives acoustic pressure/transmission voltage detection unit is connected with described audio signal source circuit, and described direct voltage generation unit output is connected with described meter circuit.
2. phone loudness measurement device as claimed in claim 1, it is characterized in that, described telephone set receives acoustic pressure/transmission voltage detection unit and comprises one first selector switch, this switch wherein one grade receive the acoustic pressure detection cell circuit with telephone set and be connected, its another shelves are connected with telephone set transmission voltage detection unit circuit.
3. phone loudness measurement device as claimed in claim 2 is characterized in that, described telephone set sends voltage detection unit and comprises an artificial mouth and the telephone set to be measured that connects successively.
4. phone loudness measurement device as claimed in claim 2 is characterized in that, described telephone set receives the acoustic pressure detecting unit and comprises a telephone set to be measured and an artificial ear that connects successively.
5. phone loudness measurement device as claimed in claim 3 is characterized in that described direct voltage generation unit comprises a band pass filter, one second selector switch, this selector switch wherein one grade directly be connected with this linear rectifier circuit.
6. phone loudness measurement device as claimed in claim 5 is characterized in that, another shelves of described selector switch connect a linear rectifier by one first amplifier.
7. as the arbitrary described phone loudness measurement device of claim 1 to 5, it is characterized in that, behind audio signal source, also connect one second amplifier.
8. phone loudness measurement device as claimed in claim 2 is characterized in that described first selector switch is one or two gear switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02288449 CN2622955Y (en) | 2002-12-17 | 2002-12-17 | Measurer for telephone loudness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02288449 CN2622955Y (en) | 2002-12-17 | 2002-12-17 | Measurer for telephone loudness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2622955Y true CN2622955Y (en) | 2004-06-30 |
Family
ID=34238616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02288449 Expired - Lifetime CN2622955Y (en) | 2002-12-17 | 2002-12-17 | Measurer for telephone loudness |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2622955Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107438221A (en) * | 2016-05-25 | 2017-12-05 | 宝山钢铁股份有限公司 | A kind of online loudspeaker acoustic pressure detector and detection method |
-
2002
- 2002-12-17 CN CN 02288449 patent/CN2622955Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107438221A (en) * | 2016-05-25 | 2017-12-05 | 宝山钢铁股份有限公司 | A kind of online loudspeaker acoustic pressure detector and detection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20121217 Granted publication date: 20040630 |