CN107809435A - A kind of extracting method and device of AMR speech datas - Google Patents
A kind of extracting method and device of AMR speech datas Download PDFInfo
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- CN107809435A CN107809435A CN201711104971.0A CN201711104971A CN107809435A CN 107809435 A CN107809435 A CN 107809435A CN 201711104971 A CN201711104971 A CN 201711104971A CN 107809435 A CN107809435 A CN 107809435A
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- rtp
- amr
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/65—Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/75—Media network packet handling
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/22—Parsing or analysis of headers
Abstract
The invention discloses a kind of extracting method and device of AMR speech datas, it is related to wireless flow media field.The extracting method includes：Gather RTP data；The RTP data are parsed sequentially in time obtains link data and RTP carryings；The RTP carryings are parsed, judges whether the RTP carryings are AMR forms by Payload Type value, is to obtain the AMR payload datas in the RTP carryings；By the property value Quality Indicator of the AMR payload datas, when to confirm the AMR payload datas be lossless data, extract and preserve AMR speech datas.The present invention is extracted by the parsing to bearing protocol and property value, and it is AMR forms to determine RTP data, then is further parsed, judged and extracted, so as to obtain lossless AMR speech datas.The present invention is advantageous to accurately and efficiently extract AMR data in mass data, without relying on Session Initiation Protocol, and is applied to different bearing mode and network environment.
Description
Technical field
The present invention relates to wireless flow media field, more particularly to a kind of extracting method and device of AMR speech datas.
Background technology
AMR (Adaptive Multi-Rate, AMR), it is a kind of common audio coding formats, it is used
Algebraic code-excited linear prediction algorithm (ACELP) and voiced activity detection, Rate decision, error concealment, comfortable background
The technologies such as noise generation, can support code rate different in the 8 of 4.75kbps to 12.2kbps, and according to the reality of wireless channel
Border situation and business demand adaptively switch speech encoding rate, and good folding is obtained between speech quality and power system capacity
Inner feelings.Because its compression ratio is very high, the audio compression of voice class is common in, the network transmission being widely used between mobile device.
Realtime transmission protocol RTP (Real-time transaction Protocol) is to handle more matchmakers on internet
A kind of procotol of volume data stream, using it can one-to-one (unicast, unicast) or it is one-to-many (multicast,
Multicast) network environment in realize and spread the real-time Transmission of media data.AMR speech datas typically use in network transmission
For Real-time Transport Protocol as bearing protocol, Real-time Transport Protocol uses Session Initiation Protocol as signaling control protocol, traditional VOIP generally uses SIP+
RTP pattern carries out the transmission of speech data.
Traditional extracting mode of AMR speech datas is that the RTP port numbers of foundation SIP signaling negotiations and IP information are carried out in advance
Survey, screening extraction efficiency is relatively low, if SIP signalings can not be obtained or in the presence of loss, correctly can not extracted in mass data
Existing AMR forms.
The content of the invention
It is an object of the invention to propose a kind of extracting method and device of AMR speech datas, SIP associations can need not be relied on
Discuss rapid extraction AMR speech datas.
To use following technical scheme up to this purpose, the present invention：
On the one hand, the present invention provides a kind of extracting method of AMR speech datas, including：
Gather RTP data；
The RTP data are parsed sequentially in time obtains link data and RTP carryings；
The RTP carryings are parsed, judge whether the RTP carryings are AMR forms, are by Payload Type value
Then obtain the AMR payload datas in the RTP carryings；
By the property value Quality Indicator of the AMR payload datas, it is nothing to confirm the AMR payload datas
When damaging data, extract and preserve AMR speech datas.
Further, after parsing the RTP data acquisition link data and RTP carryings sequentially in time, in addition to：
Managing listings are established the link according to the link data；
Accordingly, if judging that the RTP is carried as non-AMR forms by Payload Type value, abandon described in
RTP is carried, and the link data corresponding to deletion from url management list.
Wherein, extract and preserve AMR speech datas, including：
According to property value CMR and the Frame Type of the AMR payload datas, phase is extracted from the AMR payload datas
Answer the AMR speech datas of payload length.
Wherein, the RTP data are parsed sequentially in time obtains link data and RTP carryings, including：
According to the bearing protocol of the RTP data, corresponding protocol analysis is carried out sequentially in time, obtains link data
Carried with RTP；
The link data include source IP, purpose IP and UDP port number.
Wherein, judge whether the RTP carryings are AMR forms by Payload Type value, including：
Judge the Payload Type value whether be more than or equal to 96 and less than or equal to 127 integer；
If so, the RTP is carried as AMR forms；
If it is not, the RTP is carried as non-AMR forms.
On the other hand, the present invention provides a kind of extraction element of AMR speech datas, including：
Data acquisition module, for gathering RTP data；
Bearing protocol parsing module, for parsing sequentially in time, the RTP data obtain link data and RTP is held
Carry；
RTP decoder modules, for parsing the RTP carryings, judge that the RTP is carried by Payload Type value
Whether it is AMR forms, is to obtain the AMR payload datas in the RTP carryings；
AMR decoder modules, for the property value Quality Indicator by the AMR payload datas, described in confirmation
When AMR payload datas are lossless data, extract and preserve AMR speech datas.
Further, the extraction element also includes：Url management module, for described in parsing sequentially in time
After RTP data obtain link data and RTP carryings,
Managing listings are established the link according to the link data；
Accordingly, if the RTP decoder modules judge that the RTP is carried as non-AMR by Payload Type value
Form, then abandon the RTP carryings；
The url management module is additionally operable to, the link data corresponding to deletion from url management list.
Wherein, the AMR decoder modules are specifically used for：
By the property value Quality Indicator of the AMR payload datas, it is nothing to confirm the AMR payload datas
Damage data；
According to property value CMR and the Frame Type of the AMR payload datas, phase is extracted from the AMR payload datas
Answer the AMR speech datas of payload length.
Wherein, the bearing protocol parsing module is specifically used for：
According to the bearing protocol of the RTP data, corresponding protocol analysis is carried out sequentially in time, obtains link data
Carried with RTP；
The link data include source IP, purpose IP and UDP port number.
Wherein, the RTP decoder modules are specifically used for：
Judge the Payload Type value whether be more than or equal to 96 and less than or equal to 127 integer；
If so, the RTP is carried as AMR forms；
If it is not, the RTP is carried as non-AMR forms.
Beneficial effects of the present invention are：
Extracted by the parsing to bearing protocol and property value, it is AMR forms to determine RTP data, then is carried out further
Parsing, judge and extract, so as to obtain lossless AMR speech datas.The present invention is advantageous in mass data accurately and efficiently
AMR data are extracted, without relying on Session Initiation Protocol, and are applied to different bearing mode and network environment.
Brief description of the drawings
Fig. 1 is the flow chart of the extracting method for the AMR speech datas that the embodiment of the present invention one provides；
Fig. 2 is the structural representation of the extraction element for the AMR speech datas that the embodiment of the present invention two provides.
Embodiment
For make present invention solves the technical problem that, the technical scheme that uses and the technique effect that reaches it is clearer, below
The technical scheme of the embodiment of the present invention will be described in further detail with reference to accompanying drawing, it is clear that described embodiment is only
It is part of the embodiment of the present invention, rather than whole embodiments.
Embodiment one
The present embodiment provides a kind of extracting method of AMR speech datas, suitable for extracting AMR voice numbers mass data
According to situation.The extracting method is performed by a kind of extraction element of AMR speech datas, and the device is by software and/or hardware group
Into, and it is integrated in the inside of the audio processing equipments such as computer.
Fig. 1 is the flow chart of the extracting method for the AMR speech datas that the embodiment of the present invention one provides.As shown in figure 1, this is carried
Method is taken to comprise the following steps：
S11, gather RTP data.
The RTP data of different bearer mode are gathered, its bearing protocol includes but is not limited to PPPOE, GTP and GRE.
S12, the RTP data are parsed sequentially in time and obtain link data and RTP carryings.
According to the bearing protocol of the RTP data, each RTP packet is subjected to corresponding agreement sequentially in time
Parsing, obtain link data and RTP carryings；The link data include source IP, purpose IP and UDP port number.
S13, managing listings are established the link according to the link data.
Link data are obtained according to step S12 and establish the link managing listings, are handed over for ensureing between client and server
The message changed will not lose, be damaged or out-of-sequence.
S14, the RTP carryings are parsed, judge whether the RTP carryings are AMR lattice by Payload Type value
Formula, it is then to perform step S15~S16, otherwise performs step S17.
The RTP carryings extracted are parsed by RTP standard protocol stacks, its Payload Type value is specified
The type of RTP carryings, default static are mapped as [0,95], and dynamic mapping is [96,127], and AMR forms are dynamic mapping.
Therefore, whether the value for judging the Payload Type is whole more than or equal to 96 and less than or equal to 127
Number, that is, belong to the section of dynamic mapping；If so, the RTP is carried as AMR forms；If it is not, the RTP is carried as non-AMR lattice
Formula.
S15, obtain the AMR payload datas in the RTP carryings.
AMR payload datas will be obtained by parsing RTP carrying, and Sequence number, Timestap,
The property values such as Synchronization Source Identifier, after subsequent step extracts AMR speech datas, with institute
AMR speech datas are stated to preserve together.
S16, by the property value Quality Indicator of the AMR payload datas, confirm the AMR payload datas
For lossless data when, extract and preserve AMR speech datas.
AMR different coding type is different with voice frame length corresponding to different mode, it is therefore desirable to the AMR languages of extraction
The payload length of sound data is also different, according to property value CMR (codec mode request, the coding of the AMR payload datas
Mode request) and Frame Type (frame type), extract the AMR voice numbers of corresponding payload length from the AMR payload datas
According to.
S17, abandon the RTP carryings, and the link data corresponding to deletion from url management list.
Carried for the RTP of non-AMR forms, be not current embodiment require that the target of extraction, therefore can be abandoned, final chain
Connect and there was only link data corresponding to the RTP carryings of AMR forms in managing listings.
The technical scheme of the present embodiment, which extracts the AMR voices of mass data, to be become more efficiently, simply, to extract result phase
To accurate；Session Initiation Protocol can need not be relied on, is relied on for objective environment condition less；Various network environments are suitable for, it is different
The situation of bottom bearing mode or network environment poor (out of order, packet loss) can act on.
Embodiment two
The present embodiment provides a kind of extraction element of AMR speech datas, for performing the extraction side described in above-described embodiment
Method, solve identical technical problem, reach identical technique effect.
Fig. 2 is the structural representation of the extraction element for the AMR speech datas that the embodiment of the present invention two provides.As shown in Fig. 2
The extraction element includes：
Data acquisition module 21, for gathering RTP data.
Bearing protocol parsing module 22, for parsing sequentially in time, the RTP data obtain link data and RTP is held
Carry.
RTP decoder modules 23, for parsing the RTP carryings, judge that the RTP is held by Payload Type value
Whether load is AMR forms, is to obtain the AMR payload datas in the RTP carryings.
AMR decoder modules 24, for the property value Quality Indicator by the AMR payload datas, confirm institute
When to state AMR payload datas be lossless data, extract and preserve AMR speech datas.
Further, the extraction element also includes：Url management module 25, for described in parsing sequentially in time
After RTP data obtain link data and RTP carryings, managing listings are established the link according to the link data.
Accordingly, if by Payload Type value to judge that the RTP is carried as non-for the RTP decoder modules 23
AMR forms, then abandon the RTP carryings；
The url management module 25 is additionally operable to, the link data corresponding to deletion from url management list.
Wherein, the AMR decoder modules 24 are specifically used for：
By the property value Quality Indicator of the AMR payload datas, it is nothing to confirm the AMR payload datas
Damage data；According to property value CMR and the Frame Type of the AMR payload datas, extracted from the AMR payload datas corresponding
The AMR speech datas of payload length.
Wherein, the bearing protocol parsing module 22 is specifically used for：
According to the bearing protocol of the RTP data, corresponding protocol analysis is carried out sequentially in time, obtains link data
Carried with RTP；The link data include source IP, purpose IP and UDP port number.
Wherein, the RTP decoder modules 23 are specifically used for：
Judge the Payload Type value whether be more than or equal to 96 and less than or equal to 127 integer；If
It is that the RTP is carried as AMR forms；If it is not, the RTP is carried as non-AMR forms.
The present embodiment is extracted by the parsing to bearing protocol and property value, and it is AMR forms to determine RTP data, then is carried out
Further parsing, judge and extract, so as to obtain lossless AMR speech datas, be advantageous in mass data accurately, efficiently
Ground extracts AMR data, without relying on Session Initiation Protocol, and is applied to different bearing mode and network environment.
The technical principle of the present invention is described above in association with specific embodiment.These descriptions are intended merely to explain the present invention's
Principle, and limiting the scope of the invention can not be construed in any way.Based on explanation herein, the technology of this area
Personnel would not require any inventive effort the other embodiments that can associate the present invention, and these modes are fallen within
Within protection scope of the present invention.
Claims (10)
- A kind of 1. extracting method of AMR speech datas, it is characterised in that：Gather RTP data；The RTP data are parsed sequentially in time obtains link data and RTP carryings；The RTP carryings are parsed, judge whether the RTP carryings are AMR forms, are to obtain by Payload Type value Take the AMR payload datas in the RTP carryings；By the property value Quality Indicator of the AMR payload datas, it is lossless number to confirm the AMR payload datas According to when, extract and preserve AMR speech datas.
- 2. extracting method according to claim 1, it is characterised in that parse the RTP data sequentially in time and obtain After linking data and RTP carryings, in addition to：Managing listings are established the link according to the link data；Accordingly, if judging that the RTP is carried as non-AMR forms by Payload Type value, abandon the RTP and hold Carry, and the link data corresponding to deletion from url management list.
- 3. extracting method according to claim 1, it is characterised in that extract and preserve AMR speech datas, including：According to property value CMR and the Frame Type of the AMR payload datas, extracted from the AMR payload datas corresponding net The AMR speech datas of lotus length.
- 4. extracting method according to claim 1, it is characterised in that parse the RTP data sequentially in time and obtain Data and RTP carryings are linked, including：According to the bearing protocol of the RTP data, carry out corresponding protocol analysis sequentially in time, obtain link data and RTP is carried；The link data include source IP, purpose IP and UDP port number.
- 5. extracting method according to claim 1, it is characterised in that by described in Payload Type value judgement Whether RTP carryings are AMR forms, including：Judge the Payload Type value whether be more than or equal to 96 and less than or equal to 127 integer；If so, the RTP is carried as AMR forms；If it is not, the RTP is carried as non-AMR forms.
- A kind of 6. extraction element of AMR speech datas, it is characterised in that including：Data acquisition module, for gathering RTP data；Bearing protocol parsing module, link data and RTP carryings are obtained for parsing the RTP data sequentially in time；RTP decoder modules, for parsing the RTP carryings, whether the RTP carryings are judged by Payload Type value For AMR forms, it is to obtain the AMR payload datas in the RTP carryings；AMR decoder modules, for the property value Quality Indicator by the AMR payload datas, confirm the AMR When payload data is lossless data, extracts and preserve AMR speech datas.
- 7. extraction element according to claim 6, it is characterised in that also include：Url management module, for according to when Between sequentially parse after the RTP data obtain link data and RTP carryings,Managing listings are established the link according to the link data；Accordingly, if the RTP decoder modules judge that the RTP is carried as non-AMR forms by Payload Type value, Then abandon the RTP carryings；The url management module is additionally operable to, the link data corresponding to deletion from url management list.
- 8. extraction element according to claim 6, it is characterised in that the AMR decoder modules are specifically used for：By the property value Quality Indicator of the AMR payload datas, it is lossless number to confirm the AMR payload datas According to；According to property value CMR and the Frame Type of the AMR payload datas, extracted from the AMR payload datas corresponding net The AMR speech datas of lotus length.
- 9. extraction element according to claim 6, it is characterised in that the bearing protocol parsing module is specifically used for：According to the bearing protocol of the RTP data, carry out corresponding protocol analysis sequentially in time, obtain link data and RTP is carried；The link data include source IP, purpose IP and UDP port number.
- 10. extraction element according to claim 6, it is characterised in that the RTP decoder modules are specifically used for：Judge the Payload Type value whether be more than or equal to 96 and less than or equal to 127 integer；If so, the RTP is carried as AMR forms；If it is not, the RTP is carried as non-AMR forms.
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Application publication date: 20180316 |