Call automatic recording and answering circuit and call center automatic recording and answering terminal

Abstract

The utility model provides an automatic call recording and answering circuit and an automatic call center recording and answering terminal. The call automatic recording answering circuit comprises a USB sound card communicator, a recording simulation circuit and a sound card answering ground division circuit. The recording simulation circuit comprises a recording data sampling circuit and a recording clock sampling circuit; the sound card response ground division circuit comprises a sound channel output circuit and a sound channel input circuit, and the grounding end of the sound channel output circuit is connected with the analog ground; the grounding end of the sound channel input circuit is connected with the analog ground. The grounding end of the sound channel output circuit is connected to the analog ground, and the grounding end of the sound channel input circuit is also connected to the analog ground, so that sound channel input signals and other digital sound channel input signals are transmitted separately, and mutual crosstalk of input and output of sound channel audio signals is avoided. And the analog-to-digital mixing probability of interference with the switching power supply in the wireless signal transmission process is effectively reduced.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of call answering, in particular to a call automatic recording answering circuit and a call center automatic recording answering terminal. BACKGROUND

[0002] As an invisible service window for keeping close contact between enterprises and user terminals, the call center plays an increasingly important role in product promotion, product sales, technical support, after-sales service, consultation and complaint, and plays an increasingly important role in the production and operation activities of enterprises. The call center refers to an operating operating place that can automatically and flexibly handle a large number of different telephone incoming and outgoing services and services by making full use of modern communication and computer technology. With the rapid development of computer technology and communication technology, such as the introduction of CTI (Computer Telephone Integration), IVR (Interactive Voice Response), ACD (Automatic Call Distribution System) and other technologies, the call center has developed rapidly, the scale of the industry has grown, the business has become more and more complex, and the user data deposited has also become more and more.

[0003] At present, the bank customers, insurance customer service, and electric sales industry are developing rapidly, and the operator customer service work needs to use the answering recording telephone in the call. The incoming and outgoing calls need to be automatically recorded and stored to reduce the workload of customer service personnel and electric sales personnel. At the same time, the telephone of the customer service personnel and the electric sales personnel needs to be recorded and automatically recorded into the database to facilitate the traceable management of the customer service and electric sales company administrator.

[0004] However, the traditional recording answering terminal needs to process the sound card, wireless channel and output audio synchronously, and the above functions make the audio circuit connection complex, and the problem of mixed analog and digital signals caused by interference from the switching power supply often occurs, which seriously affects the reliability of the call. CONTENT OF THE INVENTION

[0005] The purpose of the present disclosure is to overcome the deficiencies in the prior art, and to provide a call automatic recording answering circuit and a call center automatic recording answering terminal which can effectively reduce the probability of mixed analog and digital signals caused by interference from the switching power supply in the process of wireless signal transmission.

[0006] The purpose of the present disclosure is achieved by the following technical solutions:

[0007] A kind of call automatic recording answering circuit, including: USB sound card communicator, recording analog circuit and sound card answering subcircuit;The recording analog circuit includes recording data sampling circuit and recording clock sampling circuit, the input of the recording data sampling circuit is connected with the recording data output of the USB sound card communicator, the output of the recording data sampling circuit is used to be connected with the recording data receiving end of 4G processing chip, the input of the recording clock sampling circuit is connected with the recording clock output of the USB sound card communicator, the output of the recording clock sampling circuit is used to be connected with the recording clock receiving end of 4G processing chip;The sound card answering subcircuit includes sound channel output circuit and sound channel input circuit, the input of the sound channel output circuit is connected with the sound channel line output of the USB sound card communicator, the output of the sound channel output circuit is used to be connected with the receiving end of host computer, the ground terminal of the sound channel output circuit is connected with analog ground;The input of the sound channel input circuit is used to be connected with the input of audio collector, the output of the sound channel input circuit is connected with the audio receiving end of the USB sound card communicator, the ground terminal of the sound channel input circuit is connected with analog ground.

[0008] In one embodiment, the sound channel output circuit includes a first capacitor and a second capacitor, the first end of the first capacitor is connected with the sound channel line output of the USB sound card communicator, the second end of the first capacitor is connected with the audio receiving positive pole of host computer, the first end of the second capacitor is connected with the audio receiving negative pole of host computer, and the second end of the second capacitor is connected with analog ground.

[0009] In one of the embodiments, the call automatic recording answering circuit further comprises a sound channel output differential circuit, the sound channel output differential circuit comprises a first double-ended differential analog switch, a first resistor, a second resistor and a first electronic switch tube, a first differential common end of the first double-ended differential analog switch is used for being connected with a positive pole of an audio mode control of a 4G processing chip, a second differential common end of the first double-ended differential analog switch is used for being connected with a negative pole of the audio mode control of the 4G processing chip, a first end of the first resistor is used for being connected with a switch reference power supply, a second end of the first resistor is connected with a power supply end of the first double-ended differential analog switch, the second end of the first resistor is also connected with a first differential comparison end of the first double-ended differential analog switch through the second resistor, the first differential comparison end of the first double-ended differential analog switch is also connected with a first end of the first electronic switch tube, the first end of the first electronic switch tube is also connected with a second differential comparison end of the first double-ended differential analog switch, a second end of the first electronic switch tube is grounded, a control end of the first electronic switch tube is used for being connected with an audio acquisition control end of the 4G processing chip; a first differential output end of the first double-ended differential analog switch is connected with a second end of the first capacitor, a second differential output end of the first double-ended differential analog switch is connected with a first end of the second capacitor.

[0010] In one of the embodiments, the sound channel input circuit comprises a third capacitor and a fourth capacitor, a first end of the third capacitor is connected with an audio receiving end of the USB sound card communicator, a second end of the third capacitor is used for being connected with an input positive pole of the audio acquisition device, the second end of the third capacitor is connected with a first end of the fourth capacitor, a second end of the fourth capacitor is connected with an analog ground.

[0011] In one of the embodiments, the call automatic recording answering circuit further comprises a sound channel input differential circuit, the sound channel input differential circuit comprises a second double-ended differential analog switch, a third resistor, a fourth resistor and a second electronic switch tube, a first differential common end of the second double-ended differential analog switch is connected with a second end of the third capacitor, a second differential common end of the second double-ended differential analog switch is connected with a second end of the fourth capacitor, a first end of the third resistor is used for being connected with a switch reference power supply, a second end of the third resistor is connected with a power supply end of the second double-ended differential analog switch, the second end of the third resistor is further connected with a first differential comparison end of the second double-ended differential analog switch through the fourth resistor, the first differential comparison end of the second double-ended differential analog switch is further connected with a first end of the second electronic switch tube, the first end of the second electronic switch tube is further connected with a second differential comparison end of the second double-ended differential analog switch, a second end of the second electronic switch tube is grounded, a control end of the second electronic switch tube is used for being connected with an audio transmission control end of the 4G processing chip; a first differential output end of the second double-ended differential analog switch is used for being connected with a positive electrode of an audio amplifier, a second differential output end of the second double-ended differential analog switch is used for being connected with a negative electrode of the audio amplifier.

[0012] In one of the embodiments, the sound channel input circuit further comprises a fifth resistor, a second end of the third capacitor is connected with a first end of the fifth resistor, a second end of the fifth resistor is connected with an input positive electrode of the audio collector.

[0013] In one of the embodiments, the sound channel input circuit further comprises a sixth resistor, a second end of the fourth capacitor is connected with a first end of the sixth resistor, a second end of the sixth resistor is connected with an input negative electrode of the audio collector.

[0014] In one of the embodiments, the recording data sampling circuit comprises a seventh resistor, an eighth resistor and a third electronic switch tube, a first end of the seventh resistor is used for being connected with a recording reference power supply, a second end of the seventh resistor is connected with a recording data output end of the USB sound card communicator and a first end of the third electronic switch tube respectively, a first end of the eighth resistor is used for being connected with a recording sampling control end of the 4G processing chip, a second end of the eighth resistor is connected with a control end of the third electronic switch tube, a second end of the third electronic switch tube is connected with a recording data receiving end of the 4G processing chip.

[0015] In one of the embodiments, the recording clock sampling circuit comprises a ninth resistor, a tenth resistor and a fourth electronic switch tube, a first end of the ninth resistor is used for being connected with a recording reference power supply, a second end of the ninth resistor is connected with a recording clock output end of the USB sound card communicator and a first end of the fourth electronic switch tube respectively, a first end of the tenth resistor is used for being connected with a recording sampling control end of the 4G processing chip, a second end of the tenth resistor is connected with a control end of the fourth electronic switch tube, and a second end of the fourth electronic switch tube is connected with a recording clock receiving end of the 4G processing chip.

[0016] The call center automatic recording answering terminal comprises the call automatic recording answering circuit in any one of the embodiments.

[0017] Compared with the prior art, the present disclosure has at least the following advantages:

[0018] The ground end of the sound channel output circuit is connected to the analog ground, and forms a separate ground transmission with the ground and the digital ground, so that the sound channel output signal is transmitted separately from other digital sound channel output signals. In addition, the ground end of the sound channel input circuit is also connected to the analog ground, and forms a separate ground transmission with the ground and the digital ground, so that the sound channel input signal is transmitted separately from other digital sound channel input signals. This avoids mutual crosstalk of the input and output of the sound channel audio signal, and effectively reduces the probability of mixing with the switching power supply interference in the wireless signal transmission process. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present disclosure, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0020] Figure 1 The circuit diagram of the call automatic recording answering circuit in one embodiment;

[0021] Figure 2 The circuit diagram of the call automatic recording answering circuit in one embodiment; Figure 1 The circuit diagram of the recording analog circuit in the call automatic recording answering circuit shown in one embodiment;

[0022] Figure 3 The circuit diagram of the call automatic recording answering circuit in one embodiment; Figure 1 The circuit diagram of the sound card answering separate ground circuit in the call automatic recording answering circuit shown in one embodiment;

[0023] Figure 4 The circuit diagram of the sound channel output differential circuit in one embodiment;

[0024] Figure 5Circuit diagram of the channel input differential circuit in an embodiment;

[0025] Figure 6 PCB diagram corresponding to the call automatic recording answering circuit in an embodiment;

[0026] Figure 7 PCB diagram corresponding to the call automatic recording answering circuit in another embodiment;

[0027] Figure 8 PCB diagram corresponding to the call automatic recording answering circuit in still another embodiment;

[0028] Figure 9 PCB diagram corresponding to the call automatic recording answering circuit in yet another embodiment;

[0029] Figure 10 PCB diagram corresponding to the call automatic recording answering circuit in yet another embodiment. DETAILED DESCRIPTION

[0030] In order to facilitate the understanding of the present disclosure, a more complete understanding of the present disclosure will be provided by reference to the related drawings. The preferred embodiments of the present disclosure are shown in the drawings. However, the present disclosure can be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the present disclosure can be more thoroughly and completely understood.

[0031] It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present. The terms "vertical", "horizontal", "left", "right" and similar expressions as used herein are for the purpose of illustration only and are not intended to limit the present disclosure.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used in the description of the disclosure herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0033] The call automatic recording answering circuit comprises a USB sound card communicator, a recording analog circuit and a sound card answering split ground circuit.

[0034] Please refer to Figure 1 , which is a circuit diagram of the call automatic recording answering circuit according to an embodiment of the present disclosure.

[0035] The call automatic recording answering circuit 10 according to an embodiment comprises a USB sound card communicator U5, a recording analog circuit 100 and a sound card answering split ground circuit 200. Please refer to Figure 2 The recording analog circuit 100 comprises a recording data sampling circuit 110 and a recording clock sampling circuit 120. The input end of the recording data sampling circuit 110 is connected with the recording data output end of the USB sound card communicator U5, and the output end of the recording data sampling circuit 110 is used to be connected with the recording data receiving end of a 4G processing chip. The input end of the recording clock sampling circuit 120 is connected with the recording clock output end of the USB sound card communicator U5, and the output end of the recording clock sampling circuit 120 is used to be connected with the recording clock receiving end of the 4G processing chip. Please refer to Figure 3The sound card response split ground circuit 200 includes a sound channel output circuit 210 and a sound channel input circuit 220. The input end of the sound channel output circuit 210 is connected with the sound channel line output end of the USB sound card communicator U5. The output end of the sound channel output circuit 210 is used for connecting with the receiving end of the host computer. The ground end of the sound channel output circuit 210 is connected with the analog ground. The input end of the sound channel input circuit 220 is used for connecting with the input end of the audio collector. The output end of the sound channel input circuit 220 is connected with the audio receiving end of the USB sound card communicator U5. The ground end of the sound channel input circuit 220 is connected with the analog ground.

[0036] In the embodiment, the ground end of the sound channel output circuit 210 is connected with the analog ground, which forms split ground transmission with the ground and the digital ground. The sound channel output signal is transmitted separately from other digital sound channel output signals. In addition, the ground end of the sound channel input circuit 220 is also connected with the analog ground, which forms split ground transmission with the ground and the digital ground. The sound channel input signal is transmitted separately from other digital sound channel input signals. The input and output of the sound channel audio signal are prevented from mutual crosstalk, which effectively reduces the probability of mixed analog and digital interference in the process of wireless signal transmission.

[0037] In another embodiment, the model of the USB sound card communicator is CM118B.

[0038] In one of the embodiments, please refer to Figure 3 The sound channel output circuit 210 includes a first capacitor C114 and a second capacitor C115. The first end of the first capacitor C114 is connected with the sound channel line output end of the USB sound card communicator U5. The second end of the first capacitor C114 is connected with the audio receiving positive pole PC_AUD_OUT1+ of the host computer. The first end of the second capacitor C115 is connected with the audio receiving negative pole PC_AUD_OUT1- of the host computer. The second end of the second capacitor C115 is connected with the analog ground. In the embodiment, the first capacitor C114 is connected with the sound channel line output end of the USB sound card communicator U5 and the audio receiving positive pole PC_AUD_OUT1+ of the host computer respectively. Specifically, the first capacitor C114 is connected in series between the sound channel line output end of the USB sound card communicator U5 and the audio receiving positive pole PC_AUD_OUT1+ of the host computer. The first capacitor C114 is used for shielding low-frequency interference signals, which ensures the stable output of the sound channel high-frequency signal. The second capacitor C115 is connected in series with the audio receiving negative pole PC_AUD_OUT1- of the host computer. In addition, the second capacitor C115 is also connected with the analog ground, which facilitates the low-frequency interference signals on the audio receiving negative pole PC_AUD_OUT1- of the host computer to be guided to the analog ground, further improving the stability of the sound channel audio signal.

[0039] Further, please refer toFigure 4 The call automatic recording answering circuit further comprises a sound channel output differential circuit 300, the sound channel output differential circuit 300 comprises a first double-end differential analog switch U2, a first resistor B6, a second resistor R105 and a first electronic switch tube Q9, a first differential common end of the first double-end differential analog switch U2 is used for being connected with a positive pole of an audio mode control of a 4G processing chip, a second differential common end of the first double-end differential analog switch U2 is used for being connected with a negative pole of the audio mode control of the 4G processing chip, a first end of the first resistor B6 is used for being connected with a switch reference power supply, a second end of the first resistor B6 is connected with a power supply end of the first double-end differential analog switch U2, the second end of the first resistor B6 is further connected with a first differential comparison end of the first double-end differential analog switch U2 through the second resistor R105, the first differential comparison end of the first double-end differential analog switch U2 is further connected with a first end of the first electronic switch tube Q9, the first end of the first electronic switch tube Q9 is further connected with a second differential comparison end of the first double-end differential analog switch U2, a second end of the first electronic switch tube Q9 is grounded, a control end of the first electronic switch tube Q9 is used for being connected with an audio acquisition control end of the 4G processing chip, a first differential output end of the first double-end differential analog switch U2 is connected with a second end of the first capacitor C114, and a second differential output end of the first double-end differential analog switch U2 is connected with a first end of the second capacitor C115. In the embodiment, the first differential comparison end of the first double-end differential analog switch U2 is used as a voltage dividing end on the first resistor B6 and the second resistor R105, and a voltage on the first differential comparison end is a voltage dividing voltage on the switch reference power supply, that is, when the first electronic switch tube Q9 is turned on, the switch reference power supply provides a comparison reference voltage for the first double-end differential analog switch U2, so as to facilitate comparison of control voltages on the positive pole and the negative pole of the audio mode control of the 4G processing chip, thereby facilitating output of an audio output signal on a sound channel line output end of the USB sound card communicator U5, and further facilitating storage of the audio output signal in a PC computer database.

[0040] In one embodiment, please refer to Figure 3The sound channel input circuit 220 comprises a third capacitor C95 and a fourth capacitor C96. A first end of the third capacitor C95 is connected with the audio receiving end of the USB sound card communicator U5. A second end of the third capacitor C95 is used to be connected with the input positive pole RECORD_4G_REC_IN+ of the audio collector. The second end of the third capacitor C95 is connected with a first end of the fourth capacitor C96. A second end of the fourth capacitor C96 is connected with the analog ground. In this embodiment, the third capacitor C95 is connected with the audio receiving end of the USB sound card communicator U5 and the input positive pole RECORD_4G_REC_IN+ of the audio collector respectively. Specifically, the third capacitor C95 is connected in series between the audio receiving end of the USB sound card communicator U5 and the input positive pole RECORD_4G_REC_IN+ of the audio collector. The third capacitor C95 is used to shield the low-frequency interference signal, so as to ensure the stable access of the high-frequency signal of the audio collection. The fourth capacitor C96 is connected in parallel with the first end of the third capacitor C95. Moreover, the fourth capacitor C96 is also connected with the analog ground, so as to guide the low-frequency interference signal on the input positive pole RECORD_4G_REC_IN+ of the audio collector to the analog ground, and further improve the stability of the audio collection signal.

[0041] Further, please refer to Figure 5The call automatic recording answering circuit further comprises a sound channel input differential circuit 400, which comprises a second double-ended differential analog switch U8, a third resistor B7, a fourth resistor R123 and a second electronic switch tube Q4. The first differential common end of the second double-ended differential analog switch U8 is connected with the second end of the third capacitor C95, and the second differential common end of the second double-ended differential analog switch U8 is connected with the second end of the fourth capacitor C96. The first end of the third resistor B7 is used to be connected with a switch reference power supply, the second end of the third resistor B7 is connected with the power supply end of the second double-ended differential analog switch U8, and the second end of the third resistor B7 is further connected with the first differential comparison end of the second double-ended differential analog switch U8 through the fourth resistor R123. The first differential comparison end of the second double-ended differential analog switch U8 is further connected with the first end of the second electronic switch tube Q4, and the first end of the second electronic switch tube Q4 is further connected with the second differential comparison end of the second double-ended differential analog switch U8. The second end of the second electronic switch tube Q4 is grounded, and the control end of the second electronic switch tube Q4 is used to be connected with the audio transmission control end of the 4G processing chip. The first differential output end of the second double-ended differential analog switch U8 is used to be connected with the positive pole of an audio amplifier, and the second differential output end of the second double-ended differential analog switch U8 is used to be connected with the negative pole of the audio amplifier. In this embodiment, the first differential comparison end of the second double-ended differential analog switch U8 serves as a voltage dividing end on the third resistor B7 and the fourth resistor R123, and the voltage on the first differential comparison end is a voltage dividing voltage on the switch reference power supply. When the second electronic switch tube Q4 is turned on, the switch reference power supply provides a comparison reference voltage for the second double-ended differential analog switch U8, so as to facilitate comparison of the control voltages on the input positive pole RECORD_4G_REC_IN+ and the input negative pole RECORD_4G_REC_IN of the audio collector, input sampling of the audio output signal on the audio receiving end of the USB sound card communicator U5, and then accurate audio processing of the audio signal collected by the microphone into the USB sound card communicator U5.

[0042] In the formula, the first electronic switch tube and the second electronic switch tube are both N-type triodes, the first end of the first electronic switch tube and the first end of the second electronic switch tube are the collectors of the N-type triodes, the second end of the first electronic switch tube and the second end of the second electronic switch tube are the emitters of the N-type triodes, and the control end of the first electronic switch tube and the control end of the second electronic switch tube are the bases of the N-type triodes.

[0043] In one embodiment, please refer to Figure 3The channel input circuit 220 further comprises a fifth resistor B3, a second end of the third capacitor C95 is connected with a first end of the fifth resistor B3, and a second end of the fifth resistor B3 is connected with the input positive pole RECORD_4G_REC_IN+ of the audio collector. In the embodiment, the fifth resistor B3 is connected with the third capacitor C95 and the audio collector respectively, and specifically, the fifth resistor B3 is connected in series between the third capacitor C95 and the input positive pole RECORD_4G_REC_IN+ of the audio collector. The fifth resistor B3 limits the current on the input positive pole RECORD_4G_REC_IN+ of the audio collector, so as to improve the stability of the audio signal on the input positive pole RECORD_4G_REC_IN+ of the audio collector.

[0044] In one of the embodiments, referring to Figure 3 The channel input circuit 220 further comprises a sixth resistor B5, a second end of the fourth capacitor C96 is connected with a first end of the sixth resistor B5, and a second end of the sixth resistor B5 is connected with the input negative pole RECORD_4G_REC_IN- of the audio collector. In the embodiment, the sixth resistor B5 is connected with the analog ground and the audio collector respectively, and specifically, the sixth resistor B5 is connected in series between the analog ground and the input negative pole RECORD_4G_REC_IN- of the audio collector. The sixth resistor B5 limits the current on the input negative pole RECORD_4G_REC_IN- of the audio collector, so as to improve the stability of the audio signal on the input negative pole RECORD_4G_REC_IN- of the audio collector.

[0045] In one of the embodiments, referring to Figure 2The recording data sampling circuit 110 includes a seventh resistor R382, an eighth resistor R375, and a third electronic switch tube Q21. The first end of the seventh resistor R382 is connected with the recording reference power supply 3V3_RECORD. The second end of the seventh resistor R382 is connected with the recording data output end of the USB sound card communicator U5 and the first end of the third electronic switch tube Q21 respectively. The first end of the eighth resistor R375 is connected with the recording sampling control end of the 4G processing chip. The second end of the eighth resistor R375 is connected with the control end of the third electronic switch tube Q21. The second end of the third electronic switch tube Q21 is connected with the recording data receiving end of the 4G processing chip. In the embodiment, the third electronic switch tube Q21 is connected in series between the recording data output end of the USB sound card communicator U5 and the recording data receiving end of the 4G processing chip. When the recording sampling control end of the 4G processing chip outputs a turn-on voltage, the third electronic switch tube Q21 is in a turn-on state. The recording data output end of the USB sound card communicator U5 outputs a recording data signal to the 4G processing chip through the third electronic switch tube Q21, so that the processed recording data signal is transmitted to the 4G processing chip, thereby facilitating AI processing of the recording data.

[0046] In one of the embodiments, referring to Figure 2 The recording data sampling circuit 110 includes a seventh resistor R382, an eighth resistor R375, and a third electronic switch tube Q21. The first end of the seventh resistor R382 is connected with the recording reference power supply 3V3_RECORD. The second end of the seventh resistor R382 is connected with the recording data output end of the USB sound card communicator U5 and the first end of the third electronic switch tube Q21 respectively. The first end of the eighth resistor R375 is connected with the recording sampling control end of the 4G processing chip. The second end of the eighth resistor R375 is connected with the control end of the third electronic switch tube Q21. The second end of the third electronic switch tube Q21 is connected with the recording data receiving end of the 4G processing chip. In the embodiment, the third electronic switch tube Q21 is connected in series between the recording data output end of the USB sound card communicator U5 and the recording data receiving end of the 4G processing chip. When the recording sampling control end of the 4G processing chip outputs a turn-on voltage, the third electronic switch tube Q21 is in a turn-on state. The recording data output end of the USB sound card communicator U5 outputs a recording data signal to the 4G processing chip through the third electronic switch tube Q21, so that the processed recording data signal is transmitted to the 4G processing chip, thereby facilitating AI processing of the recording data.

[0047] The third electronic switch tube and the fourth electronic switch tube are NMOS tubes, the first end of the third electronic switch tube and the first end of the fourth electronic switch tube are the drain of the NMOS tube, the second end of the third electronic switch tube and the second end of the fourth electronic switch tube are the source of the NMOS tube, and the control end of the third electronic switch tube and the control end of the fourth electronic switch tube are the gate of the NMOS tube.

[0048] In another embodiment, all audio switches in the call automatic recording answering circuit are all in a differential mode, and all 33P and 10P capacitors are reserved on the power supply of the audio switch to filter out 4G wireless communication interference, for example, the differential mode used in the sound channel output differential circuit and the sound channel input differential circuit.

[0049] In another embodiment, the PCB corresponding to the call automatic recording answering circuit also separates GND and VCC, especially the design and processing of the sound card part, the design and processing of the split GND and VCC of the PCB effectively eliminate the interference between the computer and the machine, and all GND and VCC are connected with magnetic beads, for details, see the attached Figure 6 .

[0050] In another embodiment, the sound card speaker in the call automatic recording answering circuit adopts differential input for recording input audio, for details, see the attached Figure 7 .

[0051] In another embodiment, the handle MIC input in the call automatic recording answering circuit also adopts a differential circuit, for details, see the attached Figure 8 .

[0052] In another embodiment, the hands-free MIC recording input sound card in the call automatic recording answering circuit adopts a differential circuit, for details, see the attached Figure 9 .

[0053] In another embodiment, the 4G processing chip connected to the call automatic recording answering circuit uses a matching computer client to provide voice AI synthesis, so that each time the customer service personnel and the telemarketing personnel answer the phone using the robot voice synthesis answering function, and the hardware is matched with the differential circuit design, for details, see the attached Figure 10 .

[0054] In one of the embodiments, the present disclosure also relates to a call center automatic recording answering terminal, comprising the call automatic recording answering circuit in any of the above embodiments. In this embodiment, the call automatic recording answering circuit comprises a USB sound card communicator, a recording analog circuit and a sound card answering split ground circuit; the recording analog circuit comprises a recording data sampling circuit and a recording clock sampling circuit, the input end of the recording data sampling circuit is connected with the recording data output end of the USB sound card communicator, the output end of the recording data sampling circuit is used for connecting with the recording data receiving end of the 4G processing chip, the input end of the recording clock sampling circuit is connected with the recording clock output end of the USB sound card communicator, and the output end of the recording clock sampling circuit is used for connecting with the recording clock receiving end of the 4G processing chip; the sound card answering split ground circuit comprises a sound channel output circuit and a sound channel input circuit, the input end of the sound channel output circuit is connected with the sound channel line output end of the USB sound card communicator, the output end of the sound channel output circuit is used for connecting with the receiving end of the upper computer, and the ground end of the sound channel output circuit is connected with the analog ground; the input end of the sound channel input circuit is used for connecting with the input end of the audio collector, the output end of the sound channel input circuit is connected with the audio receiving end of the USB sound card communicator, and the ground end of the sound channel input circuit is connected with the analog ground. The ground end of the sound channel output circuit is connected with the analog ground, and forms split ground transmission with the ground and the digital ground, so that the sound channel output signal is transmitted separately from other digital sound channel output signals, and the ground end of the sound channel input circuit is also connected with the analog ground, and forms split ground transmission with the ground and the digital ground, so that the sound channel input signal is transmitted separately from other digital sound channel input signals, avoiding mutual crosstalk of the input and output of the sound channel audio signal, and effectively reducing the analog-digital mixed probability of interference with the switching power supply in the wireless signal transmission process.

[0055] The above embodiments only express several implementation manners of the present disclosure, and the description is more specific and detailed, but it cannot be understood as the limitation of the patent scope of the present disclosure. It should be noted that, for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present disclosure, and these all belong to the protection scope of the present disclosure. Therefore, the protection scope of the patent of the present disclosure should be subject to the appended claims.

Claims

1. A call auto-record answering circuit, characterized by, The USB sound card communication device comprises: a recording analog circuit, which comprises a recording data sampling circuit and a recording clock sampling circuit, an input end of the recording data sampling circuit being connected with a recording data output end of the USB sound card communication device, an output end of the recording data sampling circuit being used for being connected with a recording data receiving end of the 4G processing chip, an input end of the recording clock sampling circuit being connected with a recording clock output end of the USB sound card communication device, and an output end of the recording clock sampling circuit being used for being connected with a recording clock receiving end of the 4G processing chip; a sound card response differential circuit, which comprises a sound channel output circuit and a sound channel input circuit, an input end of the sound channel output circuit being connected with a sound channel line output end of the USB sound card communication device, an output end of the sound channel output circuit being used for being connected with a receiving end of the upper computer, and a ground end of the sound channel output circuit being connected with an analog ground; an input end of the sound channel input circuit being used for being connected with an input end of the audio collector, an output end of the sound channel input circuit being connected with an audio receiving positive pole of the USB sound card communication device, and a ground end of the sound channel input circuit being connected with an analog ground. The sound channel output circuit comprises a first capacitor and a second capacitor, a first end of the first capacitor being connected with the sound channel line output end of the USB sound card communication device, a second end of the first capacitor being connected with the audio receiving positive pole of the upper computer, a first end of the second capacitor being connected with the audio receiving negative pole of the upper computer, and a second end of the second capacitor being connected with the analog ground.

2. The automated call recording response circuit according to claim 1, wherein, The call automatic recording response circuit further comprises a sound channel output differential circuit, which comprises a first double-end differential analog switch, a first resistor, a second resistor and a first electronic switch tube, a first differential common end of the first double-end differential analog switch being used for being connected with an audio mode control positive pole of the 4G processing chip, a second differential common end of the first double-end differential analog switch being used for being connected with an audio mode control negative pole of the 4G processing chip, a first end of the first resistor being used for being connected with a switch reference power supply, a second end of the first resistor being connected with a power supply end of the first double-end differential analog switch, the second end of the first resistor further being connected with a first differential comparison end of the first double-end differential analog switch through the second resistor, the first differential comparison end of the first double-end differential analog switch further being connected with a first end of the first electronic switch tube, the first end of the first electronic switch tube further being connected with a second differential comparison end of the first double-end differential analog switch, a second end of the first electronic switch tube being connected with the ground, and a control end of the first electronic switch tube being used for being connected with an audio collection control end of the 4G processing chip; a first differential output end of the first double-end differential analog switch being connected with the second end of the first capacitor, and a second differential output end of the first double-end differential analog switch being connected with the first end of the second capacitor.

3. The automated call recording response circuit of claim 2, wherein, ​ 4. The automated call recording response circuit of claim 1, wherein, The sound channel input circuit comprises a third capacitor and a fourth capacitor, a first end of the third capacitor is connected with an audio receiving end of the USB sound card communicator, a second end of the third capacitor is used for being connected with an input positive pole of an audio collector, the second end of the third capacitor is connected with a first end of the fourth capacitor, and a second end of the fourth capacitor is connected with an analog ground.

5. The automated call recording response circuit of claim 4, wherein, The call automatic recording and answering circuit further comprises a sound channel input differential circuit, the sound channel input differential circuit comprises a second double-end differential analog switch, a third resistor, a fourth resistor and a second electronic switch tube, a first differential common end of the second double-end differential analog switch is connected with the second end of the third capacitor, a second differential common end of the second double-end differential analog switch is connected with the second end of the fourth capacitor, a first end of the third resistor is used for being connected with a switch reference power supply, a second end of the third resistor is connected with a power supply end of the second double-end differential analog switch, the second end of the third resistor is further connected with a first differential comparison end of the second double-end differential analog switch through the fourth resistor, the first differential comparison end of the second double-end differential analog switch is further connected with a first end of the second electronic switch tube, the first end of the second electronic switch tube is further connected with a second differential comparison end of the second double-end differential analog switch, a second end of the second electronic switch tube is grounded, and a control end of the second electronic switch tube is used for being connected with an audio transmission control end of the 4G processing chip; a first differential output end of the second double-end differential analog switch is used for being connected with a positive pole of an audio amplifier, and a second differential output end of the second double-end differential analog switch is used for being connected with a negative pole of the audio amplifier.

6. The automated call recording response circuit of claim 4, wherein, The sound channel input circuit further comprises a fifth resistor, the second end of the third capacitor is connected with a first end of the fifth resistor, and a second end of the fifth resistor is connected with an input positive pole of the audio collector.

7. The automated call recording response circuit of claim 4, wherein, The sound channel input circuit further comprises a sixth resistor, the second end of the fourth capacitor is connected with a first end of the sixth resistor, and a second end of the sixth resistor is connected with an input negative pole of the audio collector.

8. The automated call recording response circuit of claim 1, wherein, The recording data sampling circuit comprises a seventh resistor, an eighth resistor and a third electronic switch tube, a first end of the seventh resistor is used for being connected with a recording reference power supply, a second end of the seventh resistor is connected with a recording data output end of the USB sound card communicator and a first end of the third electronic switch tube respectively, a first end of the eighth resistor is used for being connected with a recording sampling control end of the 4G processing chip, a second end of the eighth resistor is connected with a control end of the third electronic switch tube, and a second end of the third electronic switch tube is connected with a recording data receiving end of the 4G processing chip.

9. The automated call recording response circuit of claim 1, wherein, The recording clock sampling circuit comprises a ninth resistor, a tenth resistor and a fourth electronic switch tube, a first end of the ninth resistor is used for being connected with a recording reference power supply, a second end of the ninth resistor is connected with a recording clock output end of the USB sound card communicator and a first end of the fourth electronic switch tube respectively, a first end of the tenth resistor is used for being connected with a recording sampling control end of the 4G processing chip, a second end of the tenth resistor is connected with a control end of the fourth electronic switch tube, and a second end of the fourth electronic switch tube is connected with a recording clock receiving end of the 4G processing chip.

10. A call center automated voice response terminal, characterized by, An automatic call recording answering circuit comprising the automatic call recording answering circuit according to any one of claims 1 to 9.

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