CN100358373C - Playback method for give alarm voice - Google Patents
Playback method for give alarm voice Download PDFInfo
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- CN100358373C CN100358373C CNB2004100551439A CN200410055143A CN100358373C CN 100358373 C CN100358373 C CN 100358373C CN B2004100551439 A CNB2004100551439 A CN B2004100551439A CN 200410055143 A CN200410055143 A CN 200410055143A CN 100358373 C CN100358373 C CN 100358373C
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- alerting tone
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Abstract
The present invention relates to a playback method for giving alarm voice, which comprises that a CODEC TC of the conversation party is used to complete mixing alarm prompting voice, wherein the source of the voice is not the voice recorded in advance but digital signals directly generated according to parameters of the frequency, the strength, the time length, etc. of alarm signals. The present invention can complete giving the alarm signals to both parties of a single party of the conversation through the bidirectional superposition and the unidirectional superposition of the conversation. By using the method of the present invention, resources can be saved, speech quality can be increased, recording alarm voice files is not needed, and storage space is saved.
Description
Technical field
The present invention relates generally to the technology in the 3G (Third Generation) Moblie net, particularly in the network that MSC (mobile switching centre) use TC (codec) converses, send the method for alarm prompt sound to correspondent.
Background technology
In mobile communication business, a kind of PPS business (prepayment service pattern) is arranged, user's telephone expenses that prestore can be conversed in the time period that the telephone expenses that prestore are bought.For example present walk in the Divine Land and EasyCall user are exactly this business model.When user telephone fee within one minute during the air time, system can send the alarm prompt sound of fixed-audio to the user, shows that conversation will be hung within a certain period of time.When the user sends alarm prompt, the user still can hear conversation the opposing party's sound simultaneously.In mobile communication, also have other similar prompt tones need in communication process, send the user in addition.The basic demand of these promptings is that the user can hear prompt tone, can hear conversation the opposing party again.
In the prior art, make the user can hear prompt tone, can hear conversation voice again, just require on equipment, to provide sound mixing function.MPTY (MultiParty Service) unit is an Audio Processing Unit of finishing MPTY on the MSC.In the prior art, all utilizing MPTY passage or audio mixing equipment to carry out audio mixing usually, is that example illustrates its principle with the MPTY passage below, and other audio mixing equipment principles are identical.
As shown in Figure 1, in the prior art, if desired a side of conversation is put the alarm prompt sound, MSC needs three MPTY audio mixings of first to file passage, two sides of conversation are connected on audio mixing passage 1 and 2, the playback signal is connected on another audio mixing passage 3, by 3 pairs of conversations of this passage, one side's playback.
The shortcoming of this method of prior art is:
1, needs to use the MPTY resource of MSC, cause the MPTY user capacity to descend.On the MSC that does not have the MPTY business, to dispose the MPTY resource;
When 2, the user being inserted conferencing resource, the internal network operation can occur, can introduce the moment noise, influence speech quality;
3, playback source voice document need be recorded in advance, and takies certain memory space.
Summary of the invention
Proposed the present invention for solving above-mentioned prior art problems, its objective is in 3G R99 and 3GR4 TDM network, simple alarm prompt sound has not been adopted the MPTY audio mixing, saved the MPTY resource, can not dispose the MPTY veneer the equipment that does not need the MPTY business.The present invention is applicable to all use TC in conversation switching equipment, solves similar problem, do not limit to 3G network and use, and only be the example introduction below with the 3G network.
For achieving the above object, the invention provides and a kind ofly send the method for alarm prompt sound to correspondent, this method can be used for MSC and uses in the network (for example 3G TDM core net) that TC converses.In existing 3G TDM core net, all dispose TC at the MSC of end office (EO).Therefore, method of the present invention comprises: when will be to correspondent Play System alarm prompt sound, by MSC the signal characteristic parameter of alerting tone be directly sent to the TC that conversation is used; This TC is according to the digital signal of the signal characteristic parameter generating specific warnings sound of alerting tone; The digital signal of the digital signal of the alerting tone that this TC directly will produce and user's communication sound superposes, and the voice digital signal after the stack is sent to the user who needs prompting.
According to said method of the present invention, in the voice digital signal after stack, comprised the information of user's call voice and ALM prompt tone.Like this, conversation can hear the opposing party's user's voice and ALM prompt tone a side.If the digital signal of specific warnings sound is all superposeed in the conversation voice digital signal to both call sides, then both call sides can be heard the voice of alarm prompt sound and partner.
Method of the present invention has following advantage: (1) does not adopt the conferencing resource audio mixing to simple alarm prompt sound, saves conferencing resource, and to can not disposing the conferencing resource veneer on the equipment that does not need convention business; (2) directly use existing TC in the conversation, do not need to use new resource; (3) do not need conversation two sides are connected in conversation on the conferencing resource, can improve the voice quality of conversation; (4) the alarm voice document does not need to record, by TC directly according to the frequency of voice signal, intensity, duration, at interval, number of times etc. produces its digital signal.
Description of drawings
Fig. 1 is an existing alarm prompt tone playing schematic diagram;
Fig. 2 is the principle schematic of TC;
Fig. 3 is the schematic diagram of TC audio mixing process.
Embodiment
Describe the present invention in detail below in conjunction with accompanying drawing.
As mentioned above, in 3G TDM core network for example, the MSC of end office (EO) disposes codec TC, TC will be from AMR (many rate adaptation codings of mobile phone, being the speech coding technology that uses in the WCDMA network) compressed voice decoding is converted into the G.711 voice of coding that use in the conventional switch, and the G.711 speech conversion that will send to this machine simultaneously is the AMR voice.In calling out, speech business have at least a TC to exist, if calling party and callee in same MSC the time, then have two TC, otherwise have only a TC among a MSC.In addition, in other networks, what encoding and decoding speech adopted may not be AMR, may be to divide into groups G.711 or other move or the fixed network encoding and decoding, and these do not influence use of the present invention, only are that example is described the present invention here with AMR.
Fig. 2 is the principle schematic of a conventional TC.In TC inside, at the AMR voice with G.711 the linear speech code stream of a kind of PCM arranged between the voice.Pcm stream is the intermediary of two kinds of phonetic matrixs.
Fig. 3 has shown according to a kind of embodiment of the present invention.When will to the conversation in side's Play System alarm prompt sound the time, in order not influence the conversation between the user, MSC directly is handed down to the TC that conversation is used with the parameter of alerting tone, TC is according to the digital signal of this alerting tone parameter generating specific warnings sound, directly the digital signal of the alerting tone play is carried out digital linear with the digital signal of user's communication sound in the inside of TC and superpose, the voice digital signal after the stack will comprise the information of user's call voice and ALM prompt tone.
For example, the alerting tone parameter of China Mobile is 900 hertz, keeps 200 milliseconds, 2 seconds at interval, lasting 20 seconds, and configurable gain ranging, supposes that MSC inside is numbered 0X0001 to it, when the side's telephone expenses in the conversation were not enough, MSC can play alerting tone to this user automatically.In this case, MSC arrives the used TC of this user by index search, and indicates this TC the user to be put the signal that is numbered 0X0001.So TC according to playback direction and signal characteristic etc., produces the digital signal of this alerting tone, and superposes with the call voice digital signal.The method of two kinds of digital signals stack can have multiple, and the simplest method is exactly the Direct Digital addition, and the PCM signal has its maximum, to digital addition greater than peaked superposed signal according to the maximum value.
MSC is according to type of service, can indicate TC to superpose at assigned direction or both direction, like this, if the digital signal of alerting tone is superimposed upon on the voice digital signal that mails to as conversation one side of alerting tone prompting object, then this correspondent just can be heard the opposing party's user's voice and ALM prompt tone.
Obviously, if the digital signal of alerting tone is superimposed upon on the call voice digital signal of both call sides, then both call sides can have been heard playback and speech.
In addition, can set the implication of alerting tone as required, for example point out the folk prescription or the both sides that are conversing that new incoming call etc. is arranged.
More than be exemplary to the explanation of embodiments of the present invention, be not to be limitation of the invention.Those skilled in the art can adopt the various substitutions and modifications that are equal to the detail of above-mentioned execution mode.Essence of the present invention and protection range are only determined by claims of the application.
Claims (9)
1. the audio playback method of an alerting tone is characterized in that, may further comprise the steps:
(1), the signal characteristic parameter of alerting tone is directly sent to the codec that conversation is used by MSC when will be when conversing side's Play System alarm prompt sound;
(2) described codec is according to the digital signal of the signal characteristic parameter generating alerting tone of described alerting tone;
(3) described codec superposes the alerting tone digital signal that produced and the digital signal of user's communication sound, the voice digital signal after the stack is sent to the user who needs prompting.
2. method according to claim 1 is characterized in that, further comprises: the signal characteristic parameter of described alerting tone comprise the frequency, intensity, duration of alerting tone signal, at interval, number of times.
3. method according to claim 1 is characterised in that, described step (1) comprising: MSC sends to described codec with the playback directioin parameter of alerting tone.
4. method according to claim 3 is characterized in that, the playback directioin parameter in the described step (1) is the parameter of conversation assigned direction; Correspondingly,
Described step (3) comprising: codec upwards superposes the correspondent of described alerting tone digital signal in appointment according to described playback directioin parameter.
5. method according to claim 3 is characterized in that, the playback directioin parameter in the described step (1) be both call sides to parameter; Correspondingly,
Described step (3) comprising: codec upwards superposes described alerting tone digital signal at both call sides according to described playback directioin parameter.
6. method according to claim 4 is characterized in that, described alerting tone digital signal is carried out the digital linear stack with the call voice of specifying correspondent to make progress.
7. method according to claim 6 is characterized in that, when the value that described alerting tone digital signal and the call voice of specifying correspondent to make progress carry out the digital linear stack surpasses maximum, to surpassing peaked overlapping portion by the maximum value.
8. method according to claim 5 is characterized in that, described alerting tone digital signal and call voice carry out the digital linear stack.
9. method according to claim 8 is characterized in that, when the value that described alerting tone digital signal and call voice carry out digital linear stack surpasses maximum, to surpassing peaked overlapping portion by the maximum value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100551439A CN100358373C (en) | 2004-08-09 | 2004-08-09 | Playback method for give alarm voice |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100551439A CN100358373C (en) | 2004-08-09 | 2004-08-09 | Playback method for give alarm voice |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1735229A CN1735229A (en) | 2006-02-15 |
| CN100358373C true CN100358373C (en) | 2007-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100551439A Expired - Fee Related CN100358373C (en) | 2004-08-09 | 2004-08-09 | Playback method for give alarm voice |
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| Country | Link |
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| CN (1) | CN100358373C (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1449203A (en) * | 2002-03-28 | 2003-10-15 | 华邦电子股份有限公司 | Method for transmitting information using voice channel in DECT radio communication system |
| CN1458768A (en) * | 2002-05-15 | 2003-11-26 | 华为技术有限公司 | Method for realizing broadcast prompting sound and signal sound function in communication network |
| US6724864B1 (en) * | 2000-01-20 | 2004-04-20 | Comverse, Inc. | Active prompts |
-
2004
- 2004-08-09 CN CNB2004100551439A patent/CN100358373C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6724864B1 (en) * | 2000-01-20 | 2004-04-20 | Comverse, Inc. | Active prompts |
| CN1449203A (en) * | 2002-03-28 | 2003-10-15 | 华邦电子股份有限公司 | Method for transmitting information using voice channel in DECT radio communication system |
| CN1458768A (en) * | 2002-05-15 | 2003-11-26 | 华为技术有限公司 | Method for realizing broadcast prompting sound and signal sound function in communication network |
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| Publication number | Publication date |
|---|---|
| CN1735229A (en) | 2006-02-15 |
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