CN2098135U - Playback device connecting with stereo playback equipment - Google Patents

Abstract

The utility model provides a playback device, comprising a headphone plug which can be connected with the headphone plug of a general stereo playback player, a headphone jack which is connected with the headphone plug, the other jack which is connected with the headphone plug through a switching device, a microphone signal amplifier circuit whose output is connected with the output of the headphone plug, and an automatic power supply switching device which gets input trigger signals from the output of the headphone plug. The utility model helps studying tape teaching material which is helpful for shorthand and parents' tutorship for children. The utility model can be arranged in the playback player to form a multifunctional learning machine.

Description

Playback device connecting with stereo playback equipment

The utility model relates to a kind of playback set, relates in particular to a kind of playback set that is output as signal source usually with the audio frequency of tape tone playing equipment.

Present many tape teaching materials only are that the content of courses is enumerated together, thereby cause results of learning not good sometimes.The applicant in view of this, the using memory psychological principle, specialized designs a kind of new Vidio tap edit method.Mainly be that learning materials are decomposed by the rule of memory, according to " memory to " principle, two corresponding in " memory to " data are recorded in respectively in two different track parts (corresponding to common described left and right sound channels) of tape, point image karaoke band is arranged, the song and the lyrics are recorded in respectively on the track part of the left and right sides, and different is that we must diverge two data when recording this virgin tape on sequential.For example: study " apple-Apple " memory is right, and we can stay an aperture time with " apple " record in a track part, " Apple " recorded in another track part.Also in the middle of " memory to ", insert hint information in the tape, in the form of selection data, leave the selection information, suspend for control every unfinished audio signal that is added with certain frequency of words and use.

Be recorded on the different track parts because the basic characteristics of above-mentioned tape are the data staggered form ground that will have memory relation, the applicant just the tape of this method establishment is named into: data staggered form (English is Source Cross) tape, the SC tape is called in letter.

Can make that with SC tape study teaching material data memory effect is better, and can make the people who is ignorant of textbook content also can make the judgement of correctness the answer that the learner answers out.This tape teaching material can not only help to learn to grasp fast word and pay attention to the class ability, but also provide may for non-teacher's parental counseling child reviews.But this tape uses on present various tape tone playing equipments, will not reach desired effect.

The playback set that provides a kind of and above-mentioned SC tape to be used is provided the purpose of this utility model, in the hope of obtaining the memory situation and the effect of inhomogeneity shape.

The purpose of this utility model also is to provide a kind of common binaural audio signal with the tape tone playing equipment to be output as the playback set that signal source also can do to decompose, mix processing to this audio signal.

The utility model of realizing above-mentioned purpose comprises: one is used to the input unit that receives stereo audio signal and export left and right two channel audio signal; First signal output apparatus that links to each other with this input unit; The secondary signal output device that links to each other with described input unit by a switching device; Described switching device is configured to make that the audio signal of left and right acoustic channels obtains mixing in the audio signal that described second output device obtains, can make the left channel audio signal composition than right channel audio signal more than high ten times in the manual adjustments switching device, perhaps more than high ten times, perhaps the left and right sound channels audio signal strength is suitable than left channel audio signal for right channel audio signal.Also can allow left and right sides audio signal composition regulate arbitrarily in force, but must satisfy aforementioned requirement.

Described input unit can comprise a stereophone plug or a stereophone socket, or the lead that links to each other with stereophonic reproduction equipment audio output, described output device must be the interface hardware (as receiver J-Horner) that can link to each other with earphone.

The utility model can also comprise a microphone, and an amplifier that is used for the output voice signal amplification of microphone, described amplifier produce a positive voice signal output and a negative voice signal output.Difference according to left and right acoustic channels hybrid mode in the switching device has following two kinds of connections: obtaining in the secondary signal output device is L channel and right-channel signals sum, then above-mentioned positive voice signal is directly connected respectively on the output line of left and right sound channels input unit by hybrid circuit.If the signal that obtains in the secondary signal output device is the poor of L channel and right-channel signals, then should positive and negative signal output link to each other with the left and right sound channels output line of input unit respectively.

The utility model can also comprise a tone playing equipment power supply automatic stop arrangement according to the output signal control of described input unit; this switching device comprises the signal of certain frequency in the output signal that can respond described input unit and produces the frequency-selecting pulse generator of a pulse that one by this pulsed monostable circuit and a relay that is driven by the output of this monostable circuit.Resetting of monostable circuit has two kinds of modes: the one, and RC charges and discharge automatically reseting of circuit, regulates the time that R can change the relay adhesive; The 2nd, button is pressed in hand-reset, resets very soon; These two kinds of modes are selected by one 1 * 2 switch.

The utility model can combine with a tape tone playing equipment, also can organize machine separately, but at this moment must use with the tape tone playing equipment, promptly obtains the signal that tape is recorded by input unit from the tape tone playing equipment.

Adopt playback set of the present utility model, SC tape in the cooperation can obtain good memory effect.The companion scholar can insert earphone by first signal output apparatus, one receiver J-Horner and monitor, even be ignorant of the content in the tape teaching material, also can judge whether the learner answers correct according to the information that provides in the tape teaching material.Utilize the microphone that is added to increase the memory effect of reading aloud, the activity of pleasing oneself of can playing Karaoka again.And described additional recloser is controlled the mains switch of tape tone playing equipment automatically according to the signal of recording in the tape, thereby controls the interrupted of tape playback, provides desired minibreak in the study to the learner.

Full and clear with reference to the accompanying drawings below most preferred embodiment of the present utility model.Wherein:

Fig. 1 is the circuit theory diagrams of an embodiment of the utility model.

Fig. 2 is the circuit theory diagrams of another embodiment of the present utility model.

Fig. 3 is the circuit theory of another embodiment of the utility model.

Fig. 4 is the outside drawing that the utility model is connected with cassette player when becoming machine separately.

Referring to Fig. 1, stereophone plug CT1 is used for obtaining from the tape tone playing equipment audio signal of left and right sound channels, and resistance R 8 and R7 are passed through in these two signal outputs respectively, pass through switching device 1 again, send into a receiver J-Horner CK2, and then in earphone 2, be transformed into sound.2 of A, B are respectively the audio signal mixing points of microphone signal and left and right acoustic channels among the figure.The signal that the output of CK1 receiver J-Horner A, the B that connects from 2 of A, B and ground wire is 2 is monitored with earphone for the companion scholar.Conversion equipment 1 is by the variable resistor W2 that is serially connected in the R channel circuit, and manual switch K3 and the variable resistor W3 and the hand control K switch 4 that are serially connected in the L channel circuit are formed.K4 and K3 can be with linkage types as shown in the figure, also can separate regulation.Variable resistor W2 and W3 are used to regulate volume, and K3, K4 then is used for cutting off respectively the audio signal of left and right sound channels.What as seen from the figure, the left and right sides hybrid mode of this transposition device was that the slotting earphone of CK2 socket accepts by the difference mode of left and right acoustic channels is the A-B signal.

Obviously, press the connection among the figure, CK2 is a stereophone socket.When K switch 5 was opened, then this socket can only play monaural effect.By hearing sound, the sound of R channel and both morbid sounds of L channel in console switch K3, K4, the CK2 earphone respectively.

Before switching device 1, the left and right sound channels circuit is coupled together, press K switch 2,2 signals of A, B are mixed, make when listening a channel sound, can hear the sound in another sound channel momently by resistance R 9 and button switch K 2.When study, the learner can hear the answer of record in another sound channel by this switch.

After the audio signal of microphone M output is amplified through the amplifying circuit of being made up of discharge circuit (for example model is the operational amplifier of LM386), again by the transistor BG1 of 180 ° of two phase difference outputs and BG2 amplify output (because, this machine switching device is a left and right sides signal difference form), pass through R5 again, R6 and R7, the tone playing equipment output signal that R8 comes is linear mixes.W1 can control the sensitivity of microphone, and K1 is a microphone switch, and the learner utilizes this microphone to follow and reads, to improve memory effect or to play Karaoka and please oneself or the like.

Frequency-selecting pulse generator 4 connects A, B 2 points by K switch 7, it comprises one by capacitor C, C ', C " and inductance coil L and the multiple resonance points resonant selecting frequency circuit that is unified into (respectively with capacitor C ', C " be connected in series K switch ' and K " resonance frequency of this circuit of may command) and triode BG3 etc.When it received a tonepulse that is in resonance frequency, lc circuit resonance made the unexpected conducting of BG3 saturated, a negative pulse occurred at the collector electrode F of BG3 point.This negative pulse triggers a monostable circuit of being made up of integrated circuit (for example model is NEC555), this monostable circuit is exported a high level at its terminal 3 places, drive the relay J adhesive, make its normally-closed contact that is connected in the electric power loop of tape tone playing equipment disconnect, cut off the electricity supply, playback is suspended.Terminal 7 is in low level usually, makes capacitor C 4 discharges.After monostable circuit was triggered, terminal 7 became high-impedance state, and capacitor C 4 can not be again from terminal 7 discharges.Power supply is by variable resistor W4 and 4 chargings of 8 pairs of capacitor C of K switch, when the voltage on the capacitor C 4 is elevated to a certain degree, trigger monostable circuit 5 by terminal 6, make it get back to previous status, terminal 3 output low levels, relay J is recovered former state, and electric power loop is connected again, and the tape tone playing equipment begins playback once more.

When 8 dozens of K switch to the other end, when capacitor C 14 was linked to each other with resistance R 14, the charging of capacitor C 14 was by K switch 9 controls of series connection with it.The learner can be by the time of this switch control playback time-out.

Referring to Fig. 2.The other parts of this embodiment are identical with Fig. 1's, are that described switching device changes by a variable resistor and forms, and regulate this variable-resistance movable contact, can change the mixed proportion of the left and right sound channels audio signal that is sent among the receiver J-Horner CK2.Suitably choose the numerical value of this resistance, make, make the signal attenuation of a sound channel to basic degree of can not listening respectively, and signal can mix about when other position when movable contact during at two extreme positions.This circuit hybrid mode is the left and right sound track signals sum, and earphone can only be with low-impedance.

Fig. 3 be the utility model switching device another embodiment.Its built-up circuit also adopts a variable resistor to form.Regulate variable-resistance moving contact, can regulate the ratio of left and right sound track signals in the input earphone, near two extreme positions, the signal shorts of corresponding sound channel, thereby can not listen.

The switching device function of Fig. 2,3 two implementation columns and Fig. 1's is similar, can both make the learner only hear the sound of left and right sound channels or both morbid sounds.

When implementing the utility model, can separate under the situation of listening part, remaining two parts is accepted or rejected, can develop the type of four kinds of different stages respectively, be fit to the user of different consumption standards at reservation SC tape.

Fig. 4 is a kind of outline drawing of the present utility model.Above-mentioned various switch and earphone jack are set on the housing 6.It links to each other with power supply 8 with cassette player 7.Obviously, this is not unique combining form.

Claims (9)

1, a kind of being used for carries out the left and right acoustic channels decomposition and mixes the playback set of listening the tape of special establishment, it is characterized in that, it comprises that one is used to receive a stereo audio signal and an output left side, the input unit of the audio signal of right two sound channels, each receiver J-Horner that links to each other with this input unit, the output device that links to each other with described input unit by a switching device, described switching device structure can make in the audio signal that described output device obtains left channel audio signal than right channel audio signal more than strong ten times, perhaps right channel audio signal is than left channel audio signal more than strong ten times, perhaps a left side, R channel simple signal intensity is suitable.

2, playback set as claimed in claim 1 is characterized in that, described input unit comprises a stereophone plug or a stereophone socket, or connects the lead of usefulness, and described output device comprises one second receiver J-Horner.

3, playback set as claimed in claim 2, it is characterized in that, described second receiver J-Horner is the mono headset socket, and described switching device comprises the left and right sound channels output that connects described input unit respectively, be used for two variable resistors of deamplification intensity and can receive the manual switch of described second receiver J-Horner through the audio signal behind these two resistance decrements respectively or simultaneously.

4, playback set as claimed in claim 2 is characterized in that, described switching device comprises a continuous variable resistor of left and right sound channels output with input unit, and this variable-resistance mobile terminal links to each other with described second receiver J-Horner.

5, playback set as claimed in claim 2, it is characterized in that, described second receiver J-Horner is a stereophone socket, and its left and right sound channels connects the left and right sound channels output of described input unit respectively by the variable resistor that is used to regulate volume that constitutes described switching device.

6, playback set as claimed in claim 5 is characterized in that, described switching device also comprises the manual switch that left and right sound channels can be cut off respectively.

7, playback set as claimed in claim 2, it is characterized in that, it also can comprise a microphone, be used for the amplifier with the output voice signal amplification of microphone, described amplifier produces a positive voice signal output and a negative voice signal output, and mixing links to each other with the left and right sound channels output of input unit respectively.

8, playback set as claimed in claim 2, it is characterized in that, it also can comprise the recloser that can control a mains switch according to the output signal of described input unit, this switching device comprises the signal of certain frequency in the output signal that can respond described input unit and produces the frequency-selecting tonepulse wave detector of a pulse, one by this pulsed monostable circuit and a relay that is driven by the output of this monostable circuit.

9, playback set as claimed in claim 2 is characterized in that, serial connection one resistance and a switch between the left and right sound channels output of described input unit.

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