CN107800851B - Dialing processing method and device and telephone - Google Patents
Dialing processing method and device and telephone Download PDFInfo
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- CN107800851B CN107800851B CN201610770707.XA CN201610770707A CN107800851B CN 107800851 B CN107800851 B CN 107800851B CN 201610770707 A CN201610770707 A CN 201610770707A CN 107800851 B CN107800851 B CN 107800851B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/26—Devices for calling a subscriber
- H04M1/30—Devices which can set up and transmit only one digit at a time
- H04M1/50—Devices which can set up and transmit only one digit at a time by generating or selecting currents of predetermined frequencies or combinations of frequencies
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Abstract
The embodiment of the invention provides a dialing processing method and device and a telephone; the method comprises the following steps: receiving unprocessed upstream audio data from a subscriber line interface circuit of a telephone; and detecting the DTMF signal and carrying out interference-free processing on all audio data frames of unprocessed uplink audio data to obtain the DTMF signal value and uplink audio data to be transmitted. According to the embodiment of the invention, through the device arranged on the uplink audio data channel, the detection and the interference-free processing of the dual-tone multi-frequency signals are carried out on all audio data frames of the uplink audio data, the DTMF signals are prevented from repeatedly reaching a receiving end through the uplink audio data, meanwhile, the audio communication is not required to be interrupted, and the use experience of a user is enhanced.
Description
Technical Field
The invention relates to the field of dialing processing application, in particular to a dialing processing method and device and a telephone.
Background
In general, an external telephone body generates a DTMF signal, the DTMF signal is converted by an S L IC (Subscriber line interface circuit) and then transmitted to an equipment main chip, and the detected DTMF signal is transmitted to a network.
In the prior art, the DTMF information is detected AT any time by using a DTMF detection circuit during the call process, after a main chip detects DTMF input, an uplink audio channel is disconnected, the numerical value of the input DTMF signal is analyzed, then the corresponding DTMF numerical value is sent to a network through an AT command, a corresponding DTMF signal is generated by a network end to a receiving end, the main chip detects the DTMF signal, the time is about 40ms later, the uplink audio channel is disconnected, and in fact, part of the DTMF signal can be sent to the network through the uplink channel, and AT the moment, a network switch can send the part of the DTMF signal to the receiving end again, so that the situation of a repeated number is caused, such as the situation of actual dialing 123, and the other party can detect 112233.
Disclosure of Invention
The embodiment of the invention provides a dialing processing method and device and a telephone set, and aims to solve the problem that DTMF information in uplink audio data cannot be processed in time in the prior art.
In one aspect, a method for processing dialing is provided, including:
receiving unprocessed upstream audio data from a subscriber line interface circuit of a telephone;
and detecting the DTMF signal and carrying out interference-free processing on all audio data frames of unprocessed uplink audio data to obtain the DTMF signal value and uplink audio data to be transmitted.
In one aspect, a dial processing apparatus is provided, including:
the receiving module is used for receiving unprocessed uplink audio data from a user line interface circuit of the telephone;
and the processing module is used for detecting the DTMF signals and carrying out interference-free processing on all audio data frames of unprocessed uplink audio data to obtain the DTMF signal values and uplink audio data to be transmitted.
On one hand, the invention provides a telephone, which comprises a telephone body, a user line interface circuit, a communication module and a dialing processing device provided by the embodiment of the invention, wherein the dialing processing device is arranged on an uplink audio data channel between the user line interface circuit and the communication module.
In another aspect, a computer storage medium is provided, in which computer-executable instructions are stored, and the computer-executable instructions are used for executing the dialing processing method.
The embodiment of the invention has the following beneficial effects:
the embodiment of the invention provides a dialing processing method, which processes all uplink audio data through equipment arranged on an uplink audio data channel, avoids DTMF signals from repeatedly reaching a receiving end through the uplink audio data, solves the problem that DTMF information in the uplink audio data cannot be processed in time in the prior art, so that the receiving end cannot repeatedly receive the same DTMF signals, and further enables secondary dialing to be correctly realized.
Drawings
Fig. 1 is a flowchart of a dialing processing method according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a dial processing device according to a second embodiment of the present invention;
fig. 3 is a schematic diagram of a telephone set according to a third embodiment of the present invention;
fig. 4 is a schematic diagram of a DTMF processing unit according to a third embodiment of the present invention;
fig. 5 is a flowchart of a DTMF processing method according to a third embodiment of the present invention;
fig. 6 is another flowchart of a DTMF processing method according to a third embodiment of the present invention;
fig. 7 is a flowchart of a DTMF detection method according to a third embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention will now be further explained by means of embodiments in conjunction with the accompanying drawings.
The first embodiment:
fig. 1 is a flowchart of a dialing processing method according to a first embodiment of the present invention, and as can be seen from fig. 1, the dialing processing method according to this embodiment includes:
s101: receiving unprocessed upstream audio data from a subscriber line interface circuit of a telephone;
s102: carrying out detection and interference-free processing on dual-tone multi-frequency signals of all audio data frames of unprocessed uplink audio data to obtain dual-tone multi-frequency signal values and uplink audio data to be sent;
s103: sending uplink audio data to be sent to a data transmission module of the telephone, and transmitting the uplink audio data through a telephone line;
s104: and sending the DTMF signal value to a network terminal.
In some embodiments, the detecting and processing the dual tone multi-frequency signal for the uplink audio data in the above embodiments includes:
acquiring a first audio data frame of unprocessed uplink audio data;
performing dual-tone multi-frequency signal detection on the first audio data frame, and judging whether the first audio data frame contains dual-tone multi-frequency signals;
if the first audio data frame contains dual-tone multi-frequency signals, extracting the numerical values of the dual-tone multi-frequency signals, and carrying out interference-free processing on the first audio data frame;
and if the first audio data frame does not contain the dual-tone multi-frequency signal, the first audio data frame is used as a second audio data frame of the uplink audio data to be sent.
In some embodiments, the first audio data frame in the above embodiments is pulse code modulation data; performing dual tone multi-frequency signal detection on the first audio data frame, and determining whether the first audio data frame contains dual tone multi-frequency signals includes:
converting the first audio data frame from a time domain to a frequency domain to obtain frequency domain data;
respectively calculating the energy on all row frequency column frequency components of the frequency domain data, and determining a first frequency point and a second frequency point with the maximum energy on high and low frequency bands;
judging whether the energy size and the high-low frequency energy difference of the first frequency point and the second frequency point meet the dual-tone multi-frequency standard or not;
if yes, calculating the component of the second harmonic energy, judging whether the harmonic energy meets the dual-tone multi-frequency standard, if yes, the first audio data frame comprises dual-tone multi-frequency signals, and extracting the values of the dual-tone multi-frequency signals.
In some embodiments, the performing interference-free processing on the audio data frame to obtain song data corresponding to the song selection operation in the above embodiments includes:
directly discarding the audio data frames containing the dual tone multi-frequency signal;
alternatively, the first and second electrodes may be,
data of an audio data frame containing a dual tone multi frequency signal is zeroed out.
Second embodiment:
fig. 2 is a schematic structural diagram of a dial processing device according to a second embodiment of the present invention, and as can be seen from fig. 2, the dial processing device according to the present embodiment includes:
a receiving module 21, configured to receive unprocessed uplink audio data from a subscriber line interface circuit of a telephone;
the processing module 22 is configured to perform detection and interference-free processing on dual-tone multi-frequency signals of all audio data frames of unprocessed uplink audio data to obtain dual-tone multi-frequency signal values and uplink audio data to be sent;
the sending module 23 is a data transmission module for sending uplink audio data to be sent to a telephone; and sending the DTMF signal value to a network terminal through an AT command.
In some embodiments, the processing module 22 in the above embodiments is configured to obtain a first audio data frame of unprocessed uplink audio data, perform dual-tone multi-frequency signal detection on the first audio data frame, determine whether the first audio data frame includes a dual-tone multi-frequency signal, extract a value of the dual-tone multi-frequency signal if the first audio data frame includes the dual-tone multi-frequency signal, and perform interference-free processing on the first audio data frame; and if the first audio data frame does not contain the dual-tone multi-frequency signal, the first audio data frame is used as a second audio data frame of the uplink audio data to be sent.
In some embodiments, the first audio data frame in the above embodiments is pulse code modulation data; the processing module 22 is configured to convert the first audio data frame from a time domain to a frequency domain to obtain frequency domain data; respectively calculating the energy on all row frequency column frequency components of the frequency domain data, and determining a first frequency point and a second frequency point with the maximum energy on high and low frequency bands; judging whether the energy size and the high-low frequency energy difference of the first frequency point and the second frequency point meet the dual-tone multi-frequency standard or not; if yes, calculating the component of the second harmonic energy, judging whether the harmonic energy meets the dual-tone multi-frequency standard, if yes, the first audio data frame comprises dual-tone multi-frequency signals, and extracting the values of the dual-tone multi-frequency signals.
In some embodiments, the receiving module 21 in the above embodiments includes a receiving queue, where the receiving queue is used to buffer the first audio data frame; the transmitting module 23 includes a transmitting queue for buffering the second audio data frame.
In some embodiments, the processing module 22 in the above embodiments is configured to directly discard the audio data frames containing the dual tone multi-frequency signal; alternatively, data of an audio data frame containing the dual tone multi frequency signal is zeroed out.
In practical applications, all the functional modules in the embodiment shown in fig. 2 may be implemented by using a processor, an editing logic device, or the like.
Correspondingly, the embodiment of the invention also provides a telephone which comprises a telephone body, a user line interface circuit, a communication module and the dialing processing device provided by the embodiment of the invention, wherein the dialing processing device is arranged on an uplink audio data channel between the user line interface circuit and the communication module.
The third embodiment:
the present invention will now be further explained with reference to specific application scenarios.
In this embodiment, a method is provided, in a call process, a DTMF processing unit (i.e., the dialing processing apparatus provided in the foregoing embodiment) is added to any point in an uplink audio data path, and the DTMF processing unit may obtain uplink audio data from an audio processing unit at a front end of the DTMF processing unit, and simultaneously send audio data processed by the DTMF processing unit to an audio processing unit at a rear end.
The DTMF processing unit comprises a receiving module, a DTMF detecting module and a sending module. The receiving module comprises a receiving queue, reads the uplink audio data from the front end of the DTMF processing unit and stores each frame of audio data in the receiving queue.
The sending module comprises a sending queue, and sends each frame of audio data stored in the sending queue to the audio processing unit at the rear end of the DTMF processing unit.
The DTMF detection module is used for carrying out DTMF detection processing on each frame of audio data in the receiving queue. If the DTMF value is detected to be contained in the frame of audio data, the frame of data is discarded, and the frame of data is stored in a sending queue after 0 setting operation is carried out on the frame of data; if the frame of audio data does not contain DTMF values, it is stored directly to the transmit queue.
Specifically, as shown in fig. 3, the present embodiment provides a CPE (Customer Premise Equipment) product, which includes a telephone body 31, an S L IC circuit 32, a DTMF processing unit 33 and a wireless transmission module 34, wherein,
the phone body 31 is connected to the S L IC circuit 32, and during the call, uplink audio data and downlink audio data are generated, in which DTMF information of the keys of the phone is transmitted through the uplink audio data in addition to the actual call sound, the uplink audio data from the S L IC circuit 32 is filtered, and in the uplink audio data path, a DTMF processing unit 33 is added, which can be placed at any position in the uplink audio data path, and the audio processing unit M and the audio processing unit N in fig. 3 are only schematic, and do not exclude other audio processing units, and different audio processing units are used to perform different audio processing/transmission functions.
In this embodiment, processing is performed only on the uplink audio data, and therefore, related filtering processing on the downlink audio data channel is not described again.
As shown in fig. 4, the DTMF processing unit 33 comprises a receiving module 331, a DTMF detecting module 332 and a sending module 333, wherein,
the receiving module 331 includes a receiving queue, reads the uplink audio data from the front end of the DTMF processing unit, and stores each frame of audio data in the receiving queue.
The sending module 333 includes a sending queue, and sends each frame of audio data stored in the sending queue to the back-end audio processing unit of the DTMF processing unit.
The DTMF detection module 332 performs DTMF detection processing on the audio data in the receive queue.
The method according to the present embodiment will now be described in detail with reference to fig. 5 to 7.
As shown in fig. 5, the DTMF processing method provided by this embodiment includes the following steps:
S501-S503: receiving uplink audio frame data;
S504-S505: carrying out DTMF numerical value detection;
and if the audio frame data are successfully acquired from the receiving queue, carrying out DTMF algorithm detection.
S506-S507: and (4) directly forwarding.
If no DTMF value is detected from the frame of audio data, the frame of audio data is stored in a transmission queue.
S508-S509: and carrying out interference-free processing.
If the DTMF value is detected in the frame data, the actual DTMF value is sent to the network side through an AT command, and the audio frame containing the DTMF data is discarded.
S510-S512: and (5) circulating treatment.
The DTMF detection module processes each frame of data as long as there is audio data in the receive queue.
As shown in fig. 6, the DTMF processing method provided by this embodiment includes the following steps:
S601-S603: receiving uplink audio frame data;
S604-S605: carrying out DTMF numerical value detection;
and if the audio frame data are successfully acquired from the receiving queue, carrying out DTMF algorithm detection.
S606-S608: and carrying out interference-free processing.
If the DTMF value is detected to be contained in the frame data, the actual DTMF value is sent to the network side through an AT command, and simultaneously all audio frames containing the DTMF value in the frame are set to be 0 and then are stored in a sending queue; if no DTMF value is detected from the frame of audio data, the frame of audio data is stored directly in the transmit queue.
S609-S611: and (5) circulating treatment.
The DTMF detection module processes each frame of data as long as there is audio data in the receive queue.
As shown in fig. 7, the DTMF detection method provided by this embodiment includes the following steps:
S701-S704：
after acquiring PCM (Pulse Code Modulation) data from the receiving queue, the PCM signal is converted from the time domain to the frequency domain by using a goertzel algorithm, an FFT algorithm, or other algorithms.
And next, calculating the energy on 8 row-frequency column-frequency components, and then calculating the frequency point of the maximum energy on the high-frequency band and the low-frequency band.
S705-S709：
And then judging whether the energy size and the high-low frequency energy difference meet the DTMF standard, if so, continuing to calculate the component of the second harmonic energy, judging whether the harmonic energy size meets the DTMF standard, if so, judging that the harmonic energy size is a valid DTMF value, and outputting the DTMF value. If one point in the flow does not meet the DTMF standard, the flow returns directly.
Through the embodiment, the success rate of DTMF detection in secondary dialing can be greatly improved, and user experience is enhanced.
In summary, the implementation of the embodiment of the present invention has at least the following advantages:
the embodiment of the invention provides a dialing processing method, which processes all uplink audio data through equipment arranged on an uplink audio data channel, avoids DTMF signals from repeatedly reaching a receiving end through the uplink audio data, solves the problem that DTMF information in the uplink audio data cannot be processed in time in the prior art, so that the receiving end cannot repeatedly receive the same DTMF signals, and further enables secondary dialing to be correctly realized.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above embodiments are only examples of the present invention, and are not intended to limit the present invention in any way, and any simple modification, equivalent change, combination or modification made by the technical essence of the present invention to the above embodiments still fall within the protection scope of the technical solution of the present invention.
Claims (8)
1. A dialing processing method comprises the following steps:
receiving unprocessed upstream audio data from a subscriber line interface circuit;
and carrying out detection and interference-free processing on the DTMF signals on all audio data frames of the unprocessed uplink audio data to obtain the DTMF signal values and uplink audio data to be sent, wherein the interference-free processing comprises discarding or zeroing the audio data frames containing the DTMF signals.
2. The dial processing method of claim 1 wherein said detecting said unprocessed upstream audio data as a dual tone multi-frequency signal comprises:
acquiring a first audio data frame of the unprocessed uplink audio data;
performing dual-tone multi-frequency signal detection on the first audio data frame, and judging whether the first audio data frame contains dual-tone multi-frequency signals;
if the first audio data frame comprises dual tone multi-frequency signals, extracting the numerical values of the dual tone multi-frequency signals, and carrying out the interference-free processing on the first audio data frame;
and if the first audio data frame does not contain the dual-tone multi-frequency signal, taking the first audio data frame as a second audio data frame of the uplink audio data to be sent.
3. The dial processing method of claim 2 wherein the first audio data frame is pulse code modulation data; the performing dual tone multi-frequency signal detection on the first audio data frame and determining whether the first audio data frame contains dual tone multi-frequency signals includes:
converting the first audio data frame from a time domain to a frequency domain to obtain frequency domain data;
respectively calculating the energy on all row frequency and column frequency components of the frequency domain data, and determining a first frequency point and a second frequency point with the maximum energy on high and low frequency bands;
judging whether the energy size and the high-low frequency energy difference of the first frequency point and the second frequency point meet the dual-tone multi-frequency standard or not;
if yes, calculating the component of the second harmonic energy, judging whether the harmonic energy meets the dual-tone multi-frequency standard, if yes, the first audio data frame comprises dual-tone multi-frequency signals, and extracting the numerical values of the dual-tone multi-frequency signals.
4. A dial processing apparatus, comprising:
the receiving module is used for receiving unprocessed uplink audio data from a user line interface circuit of the telephone;
and the processing module is used for detecting the DTMF signals and carrying out interference-free processing on all audio data frames of the unprocessed uplink audio data to obtain the DTMF signal values and uplink audio data to be sent, wherein the interference-free processing comprises discarding or zeroing the audio data frames containing the DTMF signals.
5. The dial-up processing apparatus of claim 4, wherein the processing module is configured to obtain a first audio data frame of the unprocessed uplink audio data, perform dual tone multi-frequency signal detection on the first audio data frame, determine whether the first audio data frame contains dual tone multi-frequency signals, if the first audio data frame contains dual tone multi-frequency signals, extract dual tone multi-frequency signal values, and perform the interference-free processing on the first audio data frame; and if the first audio data frame does not contain the dual-tone multi-frequency signal, taking the first audio data frame as a second audio data frame of the uplink audio data to be sent.
6. The dial processing device of claim 5 wherein the first audio data frame is pulse code modulation data; the processing module is used for converting the first audio data frame from a time domain to a frequency domain to obtain frequency domain data; respectively calculating the energy on all row frequency and column frequency components of the frequency domain data, and determining a first frequency point and a second frequency point with the maximum energy on high and low frequency bands; judging whether the energy size and the high-low frequency energy difference of the first frequency point and the second frequency point meet the dual-tone multi-frequency standard or not; if yes, calculating the component of the second harmonic energy, judging whether the harmonic energy meets the dual-tone multi-frequency standard, if yes, the first audio data frame comprises dual-tone multi-frequency signals, and extracting the numerical values of the dual-tone multi-frequency signals.
7. The dial processing apparatus of claim 5 wherein the receiving module comprises a receive queue for buffering the first audio data frame; the sending module comprises a sending queue, and the sending queue is used for buffering the second audio data frame.
8. A telephone comprising a telephone body, a subscriber line interface circuit, a communications module, and a dial processing means as claimed in any of claims 4 to 7, said dial processing means being provided on an upstream audio data path between said subscriber line interface circuit and said communications module.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610770707.XA CN107800851B (en) | 2016-08-30 | 2016-08-30 | Dialing processing method and device and telephone |
| PCT/CN2017/092153 WO2018040742A1 (en) | 2016-08-30 | 2017-07-07 | Dialing processing method and device, and telephone |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610770707.XA CN107800851B (en) | 2016-08-30 | 2016-08-30 | Dialing processing method and device and telephone |
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| CN115550495B (en) * | 2022-09-02 | 2023-08-08 | 广州通则康威智能科技有限公司 | Filtering method and device for dual-tone multi-frequency signals |
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|---|---|---|---|---|
| WO2003053031A1 (en) * | 2001-12-19 | 2003-06-26 | Aerotel, Ltd. | Telephone call restrictor and related method of programming |
| CN102457631A (en) * | 2010-10-21 | 2012-05-16 | 西安龙飞软件有限公司 | Method and device for eliminating in-band dual-tone multi-frequency of 3G (third generation) wireless router |
| CN203691640U (en) * | 2013-12-20 | 2014-07-02 | 创扬通信技术（深圳）有限公司 | Wireless access device |
| CN104735811A (en) * | 2013-12-20 | 2015-06-24 | 创扬通信技术（深圳）有限公司 | Secondary dialing method based on wireless access system and wireless access equipment |
-
2016
- 2016-08-30 CN CN201610770707.XA patent/CN107800851B/en active Active
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- 2017-07-07 WO PCT/CN2017/092153 patent/WO2018040742A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003053031A1 (en) * | 2001-12-19 | 2003-06-26 | Aerotel, Ltd. | Telephone call restrictor and related method of programming |
| CN102457631A (en) * | 2010-10-21 | 2012-05-16 | 西安龙飞软件有限公司 | Method and device for eliminating in-band dual-tone multi-frequency of 3G (third generation) wireless router |
| CN203691640U (en) * | 2013-12-20 | 2014-07-02 | 创扬通信技术（深圳）有限公司 | Wireless access device |
| CN104735811A (en) * | 2013-12-20 | 2015-06-24 | 创扬通信技术（深圳）有限公司 | Secondary dialing method based on wireless access system and wireless access equipment |
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| WO2018040742A1 (en) | 2018-03-08 |
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