English listening and speaking training device and method

[0045] Example 1

[0046] Combine figure 1 , 2 , 3, 10, an English listening and speaking training device, which consists of: a microphone 1, an ear bag, the ear bag includes a circular shell 2 and ear sponge 3, the back of the circular shell 2 is open There is a central counterbore 4, the hole wall of the central counterbore 4 is fitted with a limiting clip, the central counterbore 4 is inserted into the earplug of the earphone, and the central counterbore 4 is between the ear sponge 3 The sound quality improvement circuit board 5 is inserted in between, the lower end of a round housing 2 is connected to the microphone 1 through a gooseneck 6, and the top of the round housing 2 is provided with an earplug outlet 7, and the round housing The top end of 2 is connected to the bottom end of the inverted Y-shaped connecting frame 8, the two supporting rods at the bottom end of the inverted Y-shaped connecting frame 8 are respectively arranged on both sides of the earplug outlet 7, and the top of the inverted Y-shaped connecting frame 8 is arc The top end of the inverted Y-shaped connecting frame 8 is connected to the limiting piece 9, and the limiting piece 9 is used in conjunction with the slideway 10, and the slideway 10 is opened in the arc 11 of the top beam. The road 10 includes a connecting frame slideway 17 and a limiting piece slideway 18. The limiting piece slideway 18 slides the limiting piece 9 and the inverted Y-shaped connecting frame 8, and the connecting frame slideway 17 slides down. In the Y-shaped connecting frame 8, a voice recording box 12 is provided on the upper surface of the top beam arc 11, and the voice recording box 12 is equipped with a jack, and the plug of the earphone is inserted into the jack.

[0047] Example 2

[0048] Combine Figure 4 It is explained that in the English listening and speaking training device of Embodiment 1, the sound quality improvement circuit board 5 includes a resistor R1, one end of the resistor R1 is connected to the voltage terminal, and the other end of the resistor R1 is connected to one end of the resistor R20 , The other end of the resistor R20 is connected in parallel with one end of the resistor R3 and pin 1 of the microcontroller IC1, and the other end of the resistor R3 is connected in parallel with the capacitor C1 and the sliding rheostat R4;

[0049] The No. 2 pin of the single chip microcomputer IC1 is connected to one end of the capacitor C3, the other end of the capacitor C3 is connected in parallel with one end of the sliding varistor R8 and the resistor R7, and the other end of the sliding rheostat R8 is connected to one end of the capacitor C4, so The other end of the capacitor C4 is connected in parallel with one end of the capacitor C5 and the resistor R9, and the other end of the capacitor C5 is connected to the 8th pin of the single-chip microcomputer IC1;

[0050] The pin 9 of the single-chip microcomputer IC1 is connected to one end of the resistor R21, the other end of the resistor R21 is connected in parallel with one end of the resistor R2 and one end of the resistor R5, and the other end of the resistor R2 is connected to the voltage terminal. The other end of the resistor R5 is connected in parallel with the capacitor C2 and the sliding rheostat R6;

[0051] The No. 4 pin of the single-chip microcomputer IC1 is connected to one end of the resistor R10, the other end of the resistor R10 is connected in parallel with the capacitor C6 and one end of the switch S1, and the other end of the switch S1 is connected to the battery pack;

[0052] One end of the capacitor C7 and one end of the capacitor C8 are connected in parallel with the No. 3 pin of the single chip microcomputer IC1;

[0053] One end of the capacitor C8 and one end of the capacitor C9 are connected in parallel with the No. 5 pin of the single chip microcomputer IC1;

[0054] One end of the capacitor C9 and one end of the capacitor C10 are connected in parallel with the No. 6 pin of the single-chip microcomputer IC1;

[0055] The other end of the capacitor C7, the other end of the capacitor C10 and the No. 5 pin of the single-chip microcomputer IC1 are all connected to the moving coil.

[0056] A low-frequency enhancement circuit composed of resistors and capacitors. Use the feedback input of the power amplifier IC to form a stereo inverted synthesis circuit. The power amplifier IC is used to form the driving circuit of the headphone. The resistance and capacitance between the input ICs play a role in enhancing the low-frequency characteristics. Because of the potentiometer, the enhancement of the low-frequency part can be continuously adjusted between 0 and 10 times. The stereo inverting synthesis circuit IC is composed of 0.47μF and 50K potentiometers after the DC coupling capacitors of 2 and 8 pins. In this circuit, the high-pitched part in the square effect component of the stereo is respectively inverted and synthesized to enhance the effect.

[0057] Example 3

[0058] Combine image 3 It is explained that in the English listening and speaking training device of Embodiment 1, the limit clip includes a stopper 13, the stopper 13 is connected to the shaft sleeve 14, the shaft sleeve 14 is connected to the fixed shaft 15, and the The fixed shaft 15 is installed in the central counterbore 4, and an angle limiting piece 16 is provided on the outside of the fixed shaft 15, and the angle limiting piece 16 is used in conjunction with the blocking piece 13.