CN1798355A - Method and equipment for treating special sound class in communication system - Google Patents

Method and equipment for treating special sound class in communication system Download PDF

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Publication number
CN1798355A
CN1798355A CNA2004101015301A CN200410101530A CN1798355A CN 1798355 A CN1798355 A CN 1798355A CN A2004101015301 A CNA2004101015301 A CN A2004101015301A CN 200410101530 A CN200410101530 A CN 200410101530A CN 1798355 A CN1798355 A CN 1798355A
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signal
deposit
special
module
sound
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CN100353777C (en
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董晓宏
张晓枫
李明
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Shenzhen Shangge Intellectual Property Service Co ltd
Zhangjiagang Zhiying Electronic Technology Co ltd
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Huawei Technologies Co Ltd
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Abstract

The method includes: builds a voice database; when the network needs to send a special voice signal to user, it selects the voice signal from the voice database; the voice signal above is taken as the special voice signal, and then is sent out to user through the audio encoder. The device thereof consists of an input module, a detection module, a voice storage module, an output control module and a signal output module.

Description

Handle the method and the device of special sound kind in the communication system
Technical field
The present invention relates to communication technique field, be specifically related to handle in a kind of communication system the method and the device of special sound kind.
Background technology
In mobile communcations system, because the bandwidth resources of wireless air interface are limited, when carrying out the wireless air interface transmission, at first need voice signal is encoded, be equivalent to compression, again the signal that receives is decoded when receiving by the back of eating dishes without rice or wine, be equivalent to decompress, recover normal voice.The function of encoding and decoding is finished by vocoder usually.
For example, in CDMA2000 system group network mode shown in Figure 1:
Transmission is through the compressed voice data behind the vocoder coding between mobile phone and the BTS (base station), the voice signal that is about to simulation changes the voice signal of numeral and compression into, need decode to these compressed voice data through vocoder when answering, the compressed voice signal that is about to numeral is reduced to the voice signal of simulation.
Usually, vocoder is a kind of speech coding that diminishes to the encryption algorithm of voice signal, and promptly there is certain distortion in speech data through the voice that recover after the decoding again through coding earlier with respect to original voice.In addition, different vocoders also has different enhancement process functions to voice, as the vocoder in present CDMA (code division multiple access) network background noise of voice is had stronger inhibitory action.Like this, make and come,, can be subjected to stronger inhibition to some special sounds that the mobile phone user can hear at last through BSS (base station sub-system) from NSS (network subsystem) side, such as, ring-back tone, DTMF (dual-tone multifrequency) sound, FSK (frequency shift keying) sound etc.Because the signal that these special sounds mostly are made up of fixing, periodic frequency, vocoder has certain or even stronger inhibitory action to it, by having bigger distortion behind the vocoder.
At present, in existing communication network, general vocoder is not all done optimization process to these special sounds, but delivers on the mobile phone after directly it being encoded as normal speech, to its decoding the user is answered by corresponding vocoder on the mobile phone again.There is following shortcoming in this processing mode:
(1) if vocoder has stronger inhibitory action to a certain special sound, then this special sound will be through there being big distortion behind the vocoder, and at this moment the user will hear a uncomfortable distortion sound.As the ring-back tone of single-frequency, the CDMA vocoder has inhibitory action to single-frequency, and to different single-frequency inhibition strength differences, the ring-back tone of hearing in the CDMA mobile phone will make the user not feel well like this.As present some users think the ring-back tone of 420HZ sound not as the 450HZ ring-back tone comfortable.
(2) some the special sounds that need not give the user also are fed to the user, as the dtmf signal of communication process.Because dtmf signal is through meeting distortion behind the vocoder, therefore, in communication process, need dtmf signal is detected before the vocoder coding of BSS, form information reporting to chain of command, by message this dtmf signal is delivered to mobile phone by chain of command again, after the vocoder of mobile phone, it is incorporated in the speech channel.Above-mentioned dtmf signal just is detected before the vocoder coding of BSS, and in former speech channel, do not remove, that is to say, in fact except signaling message is given the dtmf signal of mobile phone, dtmf signal also can pass through vocoder, promptly also can receive the dtmf signal of distortion in the mobile phone side.
(3) can not discern some special sound kind and it is handled flexibly.
Summary of the invention
The purpose of this invention is to provide the method for handling special sound kind in a kind of communication network, special sound is not done special processing to overcome in the prior art, also send the special sound that should not send the user to user as common sound, thereby make the user receive the shortcoming of the special sound of distortion, improve the quality of speech business and provide diversified service for the user.
Another object of the present invention provides the device of handling special sound kind in a kind of communication network, and existing communication system can not be discerned some special sound and the shortcoming of optimization process to overcome.
Technical scheme provided by the invention is as follows:
Handle the method for special sound kind in a kind of communication network, comprising:
A, foundation deposit sound bank;
B, when in the described network the special tone signal that need send to the user being arranged, from described deposit sound bank, choose corresponding deposit audio signal;
C, the deposit audio signal of described correspondence is replaced described special tone signal, behind vocoder coding, send described user to.
Described method also comprises: dispose special sound output policy.
Described step B is specially:
From described deposit sound bank, choose corresponding deposit audio signal according to the special sound output policy of described configuration.
Described step B also comprises:
Obtain the audio signal that needs to send to the user in the described network;
Detect whether special tone signal is arranged in the described audio signal.
Described deposit sound bank comprises: comfort noise signal, music signal, voice signal.
Described special tone signal comprises: dtmf signal, fsk signal, ring-back tone.
Described special sound output policy comprises: deposit sound On/Off, special sound classification, corresponding deposit audio signal.
Handle the device of special sound kind in a kind of communication network, comprising:
Signal input module is used to obtain the audio signal that described network need send to the user;
Detection module is coupled in described signal input module, and whether be used to detect described audio signal is special tone signal;
The deposit voice module is used to store the audio signal that substitutes described special tone signal;
Output control module is coupled in described detection module and described deposit voice module respectively, is used for selecting according to the testing result of described detection module the audio signal of described deposit voice module;
Signal output module is coupled in described output control module, deposit voice module and detection module respectively, is used for the selection result output corresponding audio signal according to described output control module.
Described device also comprises:
The output policy configuration module is coupled in described output control module, is used to dispose special sound output policy.
Described output control module comprises:
Deposit sound opening module is used for enabling described deposit voice module according to described special sound output policy;
The deposit sound is selected module, is used for choosing according to described special sound output policy the audio signal of described deposit voice module.
Described detection module comprises:
The DTMF detecting unit is used for detecting the touch-tone signal that described network needs to send to the user;
The FSK detecting unit is used for detecting the frequency shift keyed signals that described network needs to send to the user;
The ring-back tone detecting unit is used for detecting the ringing tone signal that described network needs to send to the user.
Described deposit voice module comprises:
The comfort noise memory cell is used to store comfort noise signal;
The musical sound memory cell is used to store music signal;
The voice signal memory cell is used to store voice signal.
By above technical scheme provided by the invention as can be seen, the inventive method is by the detection to special sound kind, and detected special sound is done corresponding processing according to the communication system actual needs, the special sound that the comfortable voice of stand-by storage or music substitute distortion sends the user to, such as: if detect DTMF number 1, if directly carry out encoding and decoding and give the user this moment, then the user can only hear the uncomfortable DTMF sound of a sound distortion, the present invention then can change this situation, in sound bank, set up earlier the voice voice of 16 DTMF, as " 1 ", " 2 ", " 3 " etc., in case detect corresponding D TMF number, then use in the sound bank corresponding DTMF voice voice to replace, this moment, the user can hear warm comfortable hommization " DTMF " sound.Therefore, utilize the present invention to provide diversified service for the user.And,, the present invention do not need the support of signaling because directly detecting processing to source of sound, and historical facts or anecdotes is now simple and effective.
By the special sound kind of the present invention checkout gear, it is discerned and optimization process special sound, and select the different way of outputs according to actual needs, for the user provides personalized service; And can be according to the communication system actual needs, flexible configuration detects, the audio signal of output.
In the existing communication network, increase special sound kind checkout gear, improved the quality of mobile network's speech business,, hear two DTMF etc. as more humane ring-back tone, when avoiding in the communication process dtmf dialing for the user provides better service; Simultaneously, the detection of special sound handled making BSC (base station controller) to manage business more neatly, and be not only only voice to be carried out encoding and decoding.
Description of drawings
Fig. 1 is the encoding-decoding process schematic diagram of transmission signals in the CDMA2000 system group network mode;
Fig. 2 is the flow chart of first embodiment of the inventive method;
Fig. 3 is the flow chart of second embodiment of the inventive method;
Fig. 4 is the theory diagram of apparatus of the present invention first embodiment;
Fig. 5 is the process chart of deposit voice module in apparatus of the present invention;
Fig. 6 is the theory diagram of apparatus of the present invention second embodiment;
Fig. 7 is the application schematic diagrames of apparatus of the present invention in CDMA2000;
Fig. 8 is the application schematic diagrames of apparatus of the present invention in WCDMA.
Embodiment
Core of the present invention is to set up the deposit sound bank and stores various audio signal, downlink voice signal in communication network is before the process vocoder coding, at first it being carried out special sound detects, dispose special sound output policy according to actual needs, corresponding audio signal replaces detected special tone signal in the utilization deposit sound bank, behind vocoder coding, send the user then to, thereby evade the bigger distortion that the encoding and decoding of vocoder bring special tone signal.Simultaneously, the present invention is conveniently used in the different communication networks it by independently special sound kind checkout gear is provided, and the special sound that need send network side detects and handles.
In order to make those skilled in the art person understand the present invention program better, the present invention is described in further detail below in conjunction with drawings and embodiments.
Flow chart with reference to the inventive method first embodiment shown in Figure 2 may further comprise the steps:
Step 201: set up the deposit sound bank, this deposit sound bank comprises: comfort noise signal, music signal, voice signal etc., such as, these unlike signals can be stored in the voice storage chip.
Step 202: obtain the audio signal that needs to send to the user in the network.
Because the present invention will solve because therefore the distortion that the encoding and decoding of vocoder produce special tone signal need obtain this signal before the vocoder of network side.For different network systems, the position of vocoder might be different, such as, in the CDMA2000 system, vocoder is positioned on the BSC (base station controller), and in the WCDMA system, vocoder is positioned on the MSC (mobile switching centre).Because the transfer path of which kind of system descending signal all is by MSC-〉BSC-〉BTS-〉mobile subscriber, therefore, can be unified in MSC and go up this function of realization.
Step 203: detect in the audio signal whether special tone signal is arranged.In detection, can be according to actual needs, configuration needs the kind of the special sound of detection.Such as, whether detect has dtmf signal, fsk signal, ring-back tone etc.
If do not detect special tone signal, then enter step 204: this audio signal is sent processing normally.
If detect special tone signal, then enter step 205: from the deposit sound bank, choose corresponding deposit audio signal.
Then, enter step 206: replace detected special tone signal by the deposit audio signal of choosing, behind vocoder coding, send the user to.
In order to improve application flexibility, adapting to different network system demands, which kind of deposit audio signal is the inventive method can also need export to the audio signal of whether exporting deposit and different special sound is controlled.
Referring to the flow process of second embodiment of the inventive method shown in Figure 3, its process is described in detail as follows:
At first, in step 301: set up the deposit sound bank, this deposit sound bank comprises: comfort noise signal, music signal, voice signal etc.
Step 302: dispose special sound output policy.
Special sound output policy comprises: deposit sound On/Off, special sound classification, corresponding deposit audio signal.
If the deposit sound function is opened, then can detect special sound, and replace special sound by the deposit audio signal according to testing result by the inventive method, send the user to; If the deposit sound function is closed, then need not the audio signal that sends to the user is detected, send by system's normal handling flow process.Like this, in different applied environments, just can use this method as required selectively.
Step 303: obtain the audio signal that needs to send to the user in the network.
Identical with first embodiment, because the present invention will solve because therefore the distortion that the encoding and decoding of vocoder produce special tone signal need obtain this signal before the vocoder of network side.For different network systems, can on MSC, realize this function, also can on BSC, realize this function.
Step 304: detect whether special tone signal is arranged in this audio signal.In detection, can be according to actual needs, configuration needs the kind of the special sound of detection.Such as, whether detect has dtmf signal, fsk signal, ring-back tone etc.
If do not detect special tone signal, then enter step 305: this audio signal is sent processing normally.
If detect special tone signal, then enter step 306: the special sound output policy according to configuration is chosen corresponding deposit audio signal from the deposit sound bank.
Such as, when detecting dtmf signal, replace this dtmf signal output by the comfort noise signal in the deposit sound bank, like this,, just can't hear special sound for the user.
For another example, " toots " sound that the ring-back tone of hearing when at present the user makes a phone call or other prompt tones mostly are a kind of dullness utilizes the present invention, detect ring-back tone after, from lay in sound bank, choose specific music tone ringer and replace normal ring-back tone; Also busy tone can be replaced with voice suggestion etc.
Then, enter step 307: replace detected special tone signal by the deposit audio signal of choosing, behind vocoder coding, send the user to.
Like this, by replacement, not only avoided the vocoder encoding and decoding to make the distortion of special tone signal generation, but also enriched user's business, thereby improved competitiveness of product special sound.
With reference to Fig. 4, Fig. 4 is the theory diagram of apparatus of the present invention first embodiment, comprising:
Signal input module 43, detection module 42, deposit voice module 41, output control module 40 and signal output module 44.This device is as follows to the Signal Processing process:
At first, obtain the audio signal that network need send to the user, and this audio signal transmission is provided detection module, by the detection of detection module realization multiple special sound by signal input module.
Detection module can dispose different detecting units, to realize the detection to different types of special tone signal.Such as, can dispose DTMF detecting unit 421, FSK detecting unit 422, ring-back tone detecting unit 423, detect DTMF (dual-tone multifrequency) signal, FSK (frequency shift keying) signal and ringing tone signal respectively.
In actual applications, also can dispose other detecting units as required, can select arbitrarily, so that the function of apparatus of the present invention is expanded flexibly and easily these different unit.
If certain detecting unit detects corresponding special tone signal, then, select to lay in the audio signal of storing in the voice module 41 by its testing result, to replace detected special tone signal according to detection module by detection module 42 notice output control modules 40.
The deposit voice module links to each other with output control module, main some specific voice messagings of preserving, after the selection result message of receiving output control module, selected deposit audio signal is outputed in the network by signal output module 44, if there is not corresponding deposit audio signal, then direct detected special tone signal is transmitted back in the network sends.
The audio signal of deposit voice module storage can be configured interpolation according to the actual conditions of network, as some music tone ringers, comfort noise etc., these signals are stored in respectively in the different memory cell, such as, the comfort noise memory cell 411 shown in the figure, musical sound memory cell 412, voice signal memory cell 413 etc.Also can the audio signal that these are different classes of be stored in the chip, distinguished by different addresses.
The deposit voice module is connected with signal output module, output control module, and carry out interface by message between the output control module, carry out interface with signal output module by signal flow, also be, the message indication that the deposit voice module is sent according to output control module, access the voice of corresponding storage, send to signal output module then, it is outputed in the network by signal output module.
The deposit voice module handling process as shown in Figure 5:
Step 501: receive output control module message;
Step 502: resolve message content;
Step 503: judge whether needs output comfort noise signal according to analysis result;
If then enter step 507: the comfort noise signal that obtains storage;
Otherwise, enter step 504: need further to judge whether the outputting music signal;
If then enter step 508: the music sound signal that obtains storage;
Otherwise, enter step 505: need further to judge whether the output suggestion voice;
If then enter step 509: obtain the suggestion voice signal;
Otherwise, enter step 506: carry out message error and handle;
The audio signal of obtaining in above-mentioned steps 507, step 508 and the step 509 need be by step 510: send a signal to signal output module.
Like this, the deposit voice module has promptly been finished its function.
Equally, for the ease of using, adapts to different network system demands, which kind of apparatus of the present invention can also need be exported to the audio signal of whether exporting deposit and different special sound and lay in audio signal and control.
Theory diagram with reference to apparatus of the present invention second embodiment shown in Figure 6:
In this embodiment, increased the output policy configuration module 60 that links to each other with output control module, disposing special sound output policy, sent to user's special sound and replace with what mode such as whether needing to replace network.
Corresponding to this module, in output control module, enable to lay in voice module according to special sound output policy by deposit sound opening module 401; Select module 402 to choose the audio signal of laying in the voice device according to special sound output policy by the deposit sound.
This device is as follows to the Signal Processing process:
At first, by the special sound output policy of output policy configuration module 60 configurations, select to open or close the deposit voice module according to this strategy by deposit sound opening module 401 then.If close this module, by the normal process flow process of prior art, this special tone signal is carried out encoding and decoding handle when then signal sends; If open this module, then can replace the distortion that special tone signal encoding and decoding is brought with the vocoder of avoiding in the network system to the special tone signal that sends to the user.
Then, obtain the audio signal that network need send to the user, and this audio signal transmission is provided detection module, by the detection of detection module realization multiple special sound by signal input module.
If detect corresponding special tone signal, then by detection module 42 notice output control modules 40, select module 402 to choose the audio signal of laying in the voice device by the deposit sound of its inside according to the testing result and the special sound output policy of detection module, to replace detected special tone signal, and with selected audio signal output in signal output module 44, by it this signal is outputed in the network again.
If deposit sound opening module 401 has been closed the deposit voice module according to special sound output policy, then the detected special tone signal of detection module directly is transparent to signal output module, by it this signal is outputed in the network again.
With reference to Fig. 7, Fig. 7 is the application schematic diagrames of apparatus of the present invention in CDMA2000:
In the CDMA2000 system, the vocoder of network side is arranged in BSC (base station controller), therefore the special sound kind of apparatus of the present invention processing unit S1 can be integrated on the BSC, the downstream signal that is sent by MSC (base station controller) carries out special sound processing through apparatus of the present invention earlier, signal after will handling then sends the vocoder among the BSC to, by this vocoder it is encoded, send to the cellphone subscriber by the base station.
Apparatus of the present invention are unidirectional control device, only downstream signal are detected processing.Need not pass through this device to upward signal, but the subscriber signal that receives directly be sent to MSC after decoding by BSC.
With reference to Fig. 8, Fig. 8 is the application schematic diagrames of apparatus of the present invention in WCDMA:
In the WCDMA system, the vocoder of network side is positioned at MSC, therefore the special sound kind of apparatus of the present invention processing unit S1 can be integrated on the MSC, by MSC the network signal that receives being carried out special sound through apparatus of the present invention earlier handles, signal after will handling then is by vocoder coding, and then the signal after will encoding sends to the cellphone subscriber by base station sub-system.
Though described the present invention by embodiment, those of ordinary skills know, the present invention has many distortion and variation and do not break away from spirit of the present invention, wish that appended claim comprises these distortion and variation and do not break away from spirit of the present invention.

Claims (12)

1, handle the method for special sound kind in a kind of communication network, it is characterized in that described method comprises:
A, foundation deposit sound bank;
B, when in the described network the special tone signal that need send to the user being arranged, from described deposit sound bank, choose corresponding deposit audio signal;
C, the deposit audio signal of described correspondence is replaced described special tone signal, behind vocoder coding, send described user to.
2, handle the method for special sound kind in the communication network according to claim 1, it is characterized in that described method also comprises:
Dispose special sound output policy.
3, handle the method for special sound kind in the communication network according to claim 2, it is characterized in that described step B is specially:
From described deposit sound bank, choose corresponding deposit audio signal according to the special sound output policy of described configuration.
4, handle the method for special sound kind in the communication network according to claim 1 and 2, it is characterized in that described step B also comprises:
Obtain the audio signal that needs to send to the user in the described network;
Detect whether special tone signal is arranged in the described audio signal.
5, handle the method for special sound kind in the communication network according to claim 1, it is characterized in that described deposit sound bank comprises:
Comfort noise signal, music signal, voice signal.
6, handle the method for special sound kind in the communication network according to claim 1, it is characterized in that described special tone signal comprises:
Dtmf signal, fsk signal, ring-back tone.
7, handle the method for special sound kind in the communication network according to claim 2, it is characterized in that described special sound output policy comprises:
Deposit sound On/Off, special sound classification, corresponding deposit audio signal.
8, handle the device of special sound kind in a kind of communication network, it is characterized in that described device comprises:
Signal input module is used to obtain the audio signal that described network need send to the user;
Detection module is coupled in described signal input module, and whether be used to detect described audio signal is special tone signal;
The deposit voice module is used to store the audio signal that substitutes described special tone signal;
Output control module is coupled in described detection module and described deposit voice module respectively, is used for selecting according to the testing result of described detection module the audio signal of described deposit voice module;
Signal output module is coupled in described output control module, deposit voice module and detection module respectively, is used for the selection result output corresponding audio signal according to described output control module.
9, handle the device of special sound kind in the communication network according to claim 8, it is characterized in that described device also comprises:
The output policy configuration module is coupled in described output control module, is used to dispose special sound output policy.
10, handle the device of special sound kind according to Claim 8 or in the 9 described communication networks, it is characterized in that described output control module comprises:
Deposit sound opening module is used for enabling described deposit voice module according to described special sound output policy;
The deposit sound is selected module, is used for choosing according to described special sound output policy the audio signal of described deposit voice module.
11, handle the device of special sound kind according to Claim 8 or in the 9 described communication networks, it is characterized in that described detection module comprises:
The DTMF detecting unit is used for detecting the touch-tone signal that described network needs to send to the user;
The FSK detecting unit is used for detecting the frequency shift keyed signals that described network needs to send to the user;
The ring-back tone detecting unit is used for detecting the ringing tone signal that described network needs to send to the user.
12, handle the device of special sound kind according to Claim 8 or in the 9 described communication networks, it is characterized in that described deposit voice module comprises:
The comfort noise memory cell is used to store comfort noise signal;
The musical sound memory cell is used to store music signal;
The voice signal memory cell is used to store voice signal.
CNB2004101015301A 2004-12-21 2004-12-21 Method and equipment for treating special sound class in communication system Expired - Fee Related CN100353777C (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105681512A (en) * 2016-02-25 2016-06-15 广东欧珀移动通信有限公司 Method and device for reducing power consumption of voice communication

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* Cited by examiner, † Cited by third party
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KR100336513B1 (en) * 1999-12-07 2002-05-11 서평원 A device of transmitting tone signal by using vocoder in wll
KR100392766B1 (en) * 2002-02-25 2003-07-31 에스케이 텔레콤주식회사 Method and Apparatus for Subscriber-based Providing Ring-Back-Tone Service

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105681512A (en) * 2016-02-25 2016-06-15 广东欧珀移动通信有限公司 Method and device for reducing power consumption of voice communication

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