JPH0365981A - Tape revcorder for practicing in language - Google Patents

Abstract

PURPOSE:To enable a user to hear, compare, and judge an instructor's voice and one's own voice by performing reading operation for a microphone signal stored in a 2nd memory circuit repeatedly and successively to reading operation for a magnetic tape playback signal stored in a 1st memory circuit. CONSTITUTION:The tape recorder is provided with two memory circuits, i.e. the 1st memory circuit stored with the playback signal reproduced from a magnetic tape 1 and the 2nd memory circuit 20 stored with the microphone signal obtained from a microphone 10. In language practice reproducing operation, the reading operation for the signal stored in the 2nd memory circuit 20 is performed successively to the reading operation for the signal stored in the 1st memory circuit 17. Consequently, the user can hear and compare the instructor's voice from a speaker 6 and high or her voice alternately, so the user can easily judge whether or not one's own pronunciation is proper in language practice.

Description

[Detailed Description of the Invention] (A) Industrial Application Field The present invention relates to a tape recorder for language practice, which is used when a student, after listening to a teacher's voice, practices a language. .

(Mouth) Conventional technology When practicing language, it is common practice to listen to the teacher's voice recorded on magnetic tape by repeatedly playing it back, but this operation requires repeated rewinding of the tape recorder. As a result, the operability was poor.As a technology to improve this point, the signal reproduced from the magnetic tape is stored as a digital signal in a memory circuit, and the signal stored in the memory circuit is repeatedly read and reproduced. There are some such technologies,
For example, there is one disclosed in Japanese Unexamined Patent Publication No. 19202/1983.

(C) Problems to be Solved by the Invention According to the technology disclosed in the above-mentioned publication, the signals stored in the memory circuit are repeatedly read out and reproduced, so the teacher's voice can be heard over and over again. I can do it.

In addition, language practice involves not only listening to the teacher's voice, but also recording one's own voice on magnetic tape and comparing the teacher's voice with one's own. However, the present invention aims to provide a tape recorder that improves the above problem.

(D) Means for Solving the Problems The present invention includes a first memory circuit that stores a reproduction signal reproduced by a magnetic head during a reproduction operation as a digital signal, and repeatedly outputs the stored reproduction signal during a repeat operation. a second memory circuit that stores a microphone signal obtained from the microphone during a language practice operation as a digital signal, and from which the stored microphone signal is read during a language practice playback operation;
It is comprised of a memory circuit and a control circuit that controls the signal write operation and signal read operation of the second memory circuit.

(E) Effect The present invention provides two memory circuits, a first memory circuit in which a reproduction signal reproduced from a magnetic tape is stored, and a second memory circuit in which a microphone signal obtained from a microphone is stored, and the present invention provides language practice reproduction. In operation, following the readout operation of the signals stored in the first memory circuit, the readout operation of the signals stored in the second memory circuit is performed.

(F) Embodiment The circuit shown in FIG. 1 is an embodiment of the present invention, and FIG. 2 is a diagram for explaining the present invention in detail.

In the figure, (1) is a magnetic head that plays back the signal recorded on the magnetic tape during playback operation, (2> is a preamplifier circuit that amplifies the signal played by the magnetic head <1>), and (3) is a repeat switch that is switched to the repeat side, which is the opposite side from the state shown in the figure, during repeat operation, and the first switch is connected to the output terminal of the preamplifier circuit (2).
Terminal <3a>, second terminal (3b) and common terminal (3c)
It is equipped with (4> is a variable resistor that adjusts the level of the signal applied through the repeat switch (3>);
(5) is a main amplifier circuit to which a signal whose level has been adjusted by the variable resistor <4> is input and which amplifies the signal, and a speaker (6) is connected as a load. (7) is a battery that is a power source; (8> is an electric motor that drives the magnetic tape to run; (9> is a power switch that is closed when an operation such as playback is performed;
) has the function of supplying power to the

(10) is a microphone that converts an acoustic signal into an electrical signal; (11> is a microphone amplifier circuit that receives a microphone signal obtained from the microphone (10) and amplifies the signal; (12) t analog signal The first signal conversion circuit has an input terminal (13) into which the signal is input, and converts the signal input to the input terminal (13) into a digital signal, and includes an output terminal (14) which outputs the digital signal. (ear) is a signal selection switch that is switched to the opposite side from the state shown when an H (high) level signal is applied to the control terminal (16), and the output of the preamplifier circuit (2) is A first terminal (15a) connected to the terminal, and a second terminal (15a) connected to the output terminal of the microphone amplifier circuit (11).
15b) and a common terminal (15c) connected to the input terminal (13) of the first signal conversion circuit (12). (17) Ti the signal selection switch (15) is in the state shown in the figure. A first memory circuit in which a reproduced signal from the magnetic head (1) converted into a digital signal by the first signal conversion circuit (12) is written and also stores the signal for a predetermined time; It is equipped with a write terminal (18) and a read terminal (19) connected to the output terminal <14> of the circuit (12>).
20) is a microphone signal from the microphone (10) converted into a digital signal by the first signal conversion circuit (12) when the signal selection switch (15> is switched to the opposite side from the state shown in the figure). A second memory circuit that stores the signal for a predetermined time while being written, and has a write terminal (21) and a read terminal (22) connected to the output terminal (14) of the first signal conversion circuit (12). (23) receives the digital signal read from the readout terminal (19>) of the first memory circuit (17) and the readout terminal (22>) of the second memory circuit (20>), and also receives the signal. is a second signal conversion circuit that converts the signal into an analog signal, and the output terminal (24) of the analog signal is connected to the repeat switch (3).
It is connected to the second terminal (3b>) of the memory circuit (17) (20). (25> is a memory operation switch that selects whether to operate or disable the memory operation using the memory circuits (17) and (20);
The illustrated state is an inactive state. (26) is an interlocking switch that is switched in conjunction with the repeat switch (3), (27) is a practice switch that is pressed to close during language practice operation and returns to the open state by itself when the operating force is cut off; (28) ) is the memory operation switch (25);
In response to switching of the interlocking switch (26) and the practice switch (27), the first signal conversion circuit (12), the signal selection switch (15), the first memory circuit (17), and the second
A control circuit (29) controls the operation of the memory circuit (20) and the second signal conversion circuit (23);
The operation is controlled by the electric motor <8>
A control switch inserted and connected in the power supply path to the
This is a motor control circuit that controls the opening/closing operation of the control switch (30), and has the function of opening the control switch (30) when the interlocking switch (26) is switched to the repeat side by repeat operation in the memory operating state. .
(31) is a switching signal output terminal to which an H level switching signal is output while the practice switch (27) is closed, and is a control terminal (1) of the signal selection switch (15).
6> is connected. In such a circuit configuration, the first
The time stored in the memory circuit (17) and the second memory circuit (20) is, for example, the time stored in the memory circuit (17) (20).
), if a 256-bit RAM is used, the time is set to about 8 seconds. The operation of writing a signal to the first memory circuit (17) is performed by the control circuit (28) when the memory operation switch (25) is in the closed state.
This is done by the control operation of the write terminal (18
The signals input to the first memory circuit (17)
The data is written within a predetermined time period, that is, 8 seconds, and is erased by successive written signals. Further, when the interlocking switch (26) is switched to the repeat side by repeat operation, the writing operation of the signal to the first memory circuit (17) is stopped, and the reading of the signal stored in the first memory circuit (17) is stopped. The operation is configured to be performed repeatedly. When the operation of reading out the signal stored in the first memory circuit (17) is being performed repeatedly, the practice switch (27) is pressed and closed. An H-level switching signal is output to the signal output terminal (31), and a state is entered in which a signal is written to the second memory circuit (20), and the signal stored in the first memory circuit (17) is The read operation will no longer be performed.

Then, when the practice switch (27) is opened, the output signal of the switching signal output terminal (31> becomes L level and the writing operation of the signal to the second memory circuit (20>) is stopped, and then the first memory circuit ( 17) and the second memory circuit (20) are continuously and repeatedly performed. The present invention is constructed as follows, and the operation of such a circuit will be explained next.

The illustrated state is a stopped state, and if a playback operation is performed in such a state, the magnetic tape drive mechanism enters the playback state and the power switch (9>) is closed. ) is closed, power is supplied to the electric motor (8) through the control switch (30) which is in the closed state, and the drive operation for playing the magnetic tape is performed, and the power supply operation to each circuit is performed. is performed to configure the playback operating state. The reproduction signal reproduced by the magnetic head (1) is input to the preamplifier circuit <2>, amplified, and then applied to the variable resistor (4>) through the repeat switch (3). The reproduced signal applied to 4> is input to the main amplifier circuit (5>) after its level is adjusted and amplified.
The reproduced signal amplified by step 5) is applied to a speaker (6) connected as a load and is emitted, so that the user can listen to the signal reproduced from the magnetic tape.

When the memory operation switch <25> is switched to the closed state in the above-mentioned playback operating state, the first signal conversion circuit <12> and the first memory circuit (17>) are brought into the operating state by the action of the control circuit (28>). Therefore, the first signal conversion circuit (12) converts the analog signal into a digital signal and writes the signal into the first memory circuit (17).In other words, in this state, the preamplification is performed. The reproduced signal amplified by the circuit (2) is input to the input terminal (13) of the first signal conversion circuit (12) through the signal selection switch (15), converted to a digital signal, and then sent to the output terminal (14). The output terminal (14
The digital signal output to the first memory circuit (
The reproduction signal stored in the first memory circuit (17) is inputted to the write terminal (18> provided at 17) and stored in the first memory circuit (17). However, after 8 seconds have elapsed, new reproduction signals are stored one after another, so the data is erased.

Press the memory operation switch (2) while in playback mode.
The operation when closing 5> is performed as described above, but the repeat operation will be explained next. Such a repeat operation is performed when the repeat switch (
3) to the repeat side, which is the opposite side from the illustrated state. The repeat switch (3
) to the repeat side, the corresponding repeat switch (3)
The interlocking switch (26>) that is switched in conjunction with the switch (26) is switched to the opposite side from the state shown in the figure, and the control circuit (28) enters a state in which it performs a control operation for repeat operation. When the control switch (30) is opened by the action of the motor control circuit (29), the power supply to the motor (8) is cut off. When the state of control is reached, the writing operation to the first memory circuit (17) is stopped and the first memory circuit (17) is stopped.
17) is repeated.

Figure 2 (A) shows the signal recorded on the magnetic tape ('f), and the point (T,) is the point at which the repeat operation was performed.When such a repeat operation was performed The first memory circuit (17) includes a magnetic tape (I
(A> , (B) shown in (τI) from (Work, ) of ')
, (C).

The signal (D) is in a stored state, and the predetermined time from (τ, ) to (T1> is 8 seconds.
B) is the read terminal (19) of the first memory circuit (17)
As shown in the figure, during repeat operation, the signals (A), (B), (C), and (D) stored in the first memory circuit (17) are repeatedly output. That will happen. The first memory circuit (
The signal read from 17> is sent to the second signal conversion circuit (23
), it is converted to an analog signal and sent to the output terminal (
24). The signal output to the output terminal (24) is connected to the repeat switch (3) and the variable resistor (4).
is input to the main amplifier circuit (5) through the main amplifier circuit (5), amplified, and then applied to the speaker (6). Therefore, when a repeat operation is performed, the signal from the magnetic tape (process) recorded in the first memory circuit (17) is Reproduction signals (A) and (B)
.

(C) and (D) are repeatedly emitted by the speaker (6), and the user can listen to the same signals over and over again. When such a repeat operation is being performed, the electric motor (8) is in a stopped state, so the magnetic tape is in a stopped state, and the tape recorder is in a temporarily stopped state. When the repeat switch (3> is switched to the state shown in the figure while in such a repeat operation state, the interlocking switch (26) is also switched to the state shown in the figure and the repeat state is canceled. When the repeat state is released, the motor control circuit (29) closes the control switch (30) and supplies power to the electric motor (8), returning the tape recorder to the playback mode.If you repeat the operation from now on, the above operation will be performed. Since it will be carried out on magnetic tape (
The teacher's voice recorded in T) can be played over and over again.

Although the playback and repeat operations are performed as described above,
Next, language practice movements will be explained. Such a language practice operation is performed by pressing and closing the practice switch (27) when in the repeat operation state described above.When in the repeat operation state, the first memory circuit (17) is closed as described above. In this state, when the practice switch (27) is closed, the reading operation of the first memory circuit (17) is stopped and the playback signal stored in the first memory circuit (17) is read out repeatedly. 2
The memory circuit (20> enters the write operation state. Also,
When the practice switch (27) is closed, the control circuit (
Switching signal output terminal provided at 28> (H at 31>
The level switching signal is output and the signal selection switch (15
), the signal selection switch (15>) is switched to the opposite side from the illustrated state.

In such a state, when the user, who is a student, speaks, the signal is converted into an electrical signal by the microphone (10) and then input to the microphone amplification circuit (11).Input to the microphone amplification circuit (11) The amplified microphone signal is applied to the input terminal (13) of the first signal conversion circuit (12>) through the signal selection switch (15).The microphone signal applied to the input terminal (13>) First signal conversion circuit (
After being converted into a digital signal by step 12), it is input to the write terminal (21) of the second memory circuit <20> and stored in the second memory circuit (20). Since the operation of writing the microphone signal into the second memory circuit (20) is performed while the practice switch (27) is pressed and closed, the user repeats his/her own voice over and over again for a predetermined period of time. It can be stored in the second memory circuit (20) for 8 seconds.Then, when the user releases the pressure on the practice switch (27) after speaking, the practice switch (27)
7) is opened and the write operation to the second memory circuit (20) is stopped. Figure 2 (C) shows the second memory circuit (2).
0). When the practice switch (27) is opened, the writing operation of the signal to the second memory circuit (20) is stopped, and the reading operation of the reproduction signal stored in the first memory circuit (17) and the second memory are stopped. The reading operation of the microphone signal stored in the circuit (20) is continued,
And it becomes a state where it is repeated. FIG. 2(d) shows such a read operation, and as is clear from the figure, the reproduction signal (A) from the magnetic tape (1') stored in the first memory circuit (17), (B),
Microphone signals (a), (b), (c) stored in the second memory circuit (20>) after the read operations (C) and (D) are performed.

The read operation (d) is performed continuously and repeatedly. Therefore, the user can compare and listen to the teacher's voice emitted from the speaker (6) and his or her own voice, making it easy to judge whether his or her own pronunciation is good or bad when practicing language. I can do it.

In this example, the storage operation time of the first memory circuit (17) and the second memory circuit (20>) was set to 8 seconds, but the capacity of the memory used in the memory circuits (17) and (20) and the sampling time may vary. By changing the frequency, etc., the storage operation time can be changed in various ways.Furthermore, although the storage operation time by the memory circuits (17) and (20) is set to one type, it is also possible to change the storage operation time in various ways by using a changeover switch. Then, when the practice switch (27) is changed from the closed state to the open state, the reading operation of the signals stored in the first memory circuit (17) and the second memory circuit (20) is started. , second memory circuit <2
The structure is configured such that the reading operation of only the microphone signal stored in the first memory circuit (17>) and the second memory circuit (20>) is repeatedly performed, and the continuous reproduction operation of the signal stored in the first memory circuit (17>) and the second memory circuit (20>), that is, A separate switch may be provided to start the language practice playback operation.

Further, the operation of listening to the reproduced signal and the repeat signal can be performed by using a speaker (6>) or headphones.

(G) Effects of the Invention The present invention provides two memory circuits, a first memory circuit in which a reproduction signal reproduced from a magnetic tape is stored, and a second memory circuit in which a microphone signal obtained from a microphone is stored. During the practice playback operation, following the readout operation of the signals stored in the first memory circuit, the readout operation of the signals stored in the second memory circuit is repeatedly performed, so that the teacher's information reproduced from the magnetic tape is The present invention is very effective in language practice, as the student's voice can be compared and heard with the student's own voice input through the microphone.

[Brief explanation of drawings]

The circuit shown in FIG. 1 is an embodiment of the present invention, and FIG. 2 is a diagram for explaining the present invention in detail. Explanation of main drawing numbers (1)...Magnetic head, 2>...Preamplifier circuit, (3)...Repeat switch, (5>...Main amplifier circuit, (6)...・Speaker (10)...Microphone, (11>...Microphone amplifier circuit, (12)...First signal conversion circuit, (15>...
...Signal selection switch, (17)...First memory circuit, (20)...Second memory circuit, (23>...
...Second signal conversion circuit, <25>...Memory operation switch, (26)...Interlocking switch, (27)
...Practice switch, (28)...Control circuit.

Claims (1)

[Claims] (1) A first memory circuit that stores the reproduction signal reproduced by the magnetic head as a digital signal during the reproduction operation and repeatedly outputs the stored reproduction signal during the repeat operation, and a microphone signal obtained from the microphone during the language practice operation. a second memory circuit that stores the microphone signal as a digital signal and reads out the stored microphone signal during a language practice playback operation; and a control that controls signal writing operations and signal reading operations of the first memory circuit and the second memory circuit. The circuit repeatedly reads out the signals stored in the first memory circuit during the repeat operation, and the first memory circuit during the language practice playback operation.
Following the reading operation of the signal stored in the memory circuit, the reading operation of the signal stored in the second memory circuit is performed, and the signal reading operation of the first memory circuit and the second memory circuit is repeatedly performed. A tape recorder for language practice that features: