CN2737089Y - Equipment for detecting ringing response in CDMA system - Google Patents
Equipment for detecting ringing response in CDMA system Download PDFInfo
- Publication number
- CN2737089Y CN2737089Y CN 200320128520 CN200320128520U CN2737089Y CN 2737089 Y CN2737089 Y CN 2737089Y CN 200320128520 CN200320128520 CN 200320128520 CN 200320128520 U CN200320128520 U CN 200320128520U CN 2737089 Y CN2737089 Y CN 2737089Y
- Authority
- CN
- China
- Prior art keywords
- signal
- voice
- equipment
- audio frequency
- input part
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Telephonic Communication Services (AREA)
Abstract
The utility model relates to equipment for detecting ringing response in a CDMA (Code Division Multiple Access) system, comprising a new frame, a voice recognition device, a voice signal detection device, a waiting next frame and an answering device. Legitimate voice signals which are not checked by the new frame are transferred to the voice recognition device while the legitimate voice signals which are recorded by the new frame are transferred to the voice signal detection device; potential voice signals in the voice recognition device are transferred to the waiting next frame while the overtime voice signals are transferred to the answering device; voice signals in the voice signal detection device are engaged to the waiting next frame while excessively shifted signals are transferred to the answering device.
Description
Technical field:
The utility model relates in a kind of cdma system responds the equipment that detects to ring, belongs to mobile communication equipment and makes the field.
Background technology:
Traditionally, there are two kinds of methods can discern audio frequency: to carry out frequency analysis or use audio detection hardware by software with natural frequency.Software analysis can accurately be discerned specific sound frequency, works alone and audio detection hardware can not take processor resource.
Summary of the invention:
The purpose of design is to determine the accurate response time in CDMA mobile phone exhalation side with effective cost.Do not respond state and answer state owing to there is a kind of forced signal can distinguish ring, the present invention adopts the frequency information of ring audio frequency to carry out reliable response status and detects.Also introduced a kind of new audio analysis method in addition, it surpasses traditional method and can satisfy requirement cheaply on functionality.
Design: in cdma system, owing to all comprise the audio frequency sluggishness in each Frame of CELP coded data of high frequency, free must carrying out rough frequency analysis and can realize to the CELP coding audio signal of input.Utilize the interval of sluggish information of audio frequency and frame arrival, just can calculate the frequency information of the audio signal of input.
Successful audio acknowledgement detection algorithm need be dealt with the tone of all different rings of the whole world.This algorithm owing to respond ring a large amount of different kinds (at least 96 different countries adopt the tone of 87 kinds of uniquenesses) arranged, if only can detect pre-determined tone and not have practical significance.And, specify certain audio frequency to need the user to import or to the understanding of regional information, this has reduced the user friendly of mobile telephone equipment.Therefore, need to introduce a kind of intelligent method that can discern audio mode.In ring, tone has stable audio frequency in very long a period of time, so frequency analysis does not need very high resolution.Voice data in the cdma system enters the voice packet of CELP coding, and all High Data Rate frames all comprise the sluggish information of audio frequency.Speech frame arrives with 20 milliseconds frame period, and this provides good timing reference and enough resolution to analysis.By utilizing audio frequency sluggishness and frame period, amount of calculation that just can be very little is finished rough frequency analysis.
This algorithm utilizes audio frequency sluggishness and the sequential in the forward communications voiced frame to realize the audio frequency detection at interval.Algorithm has two processes: identification and detection.Identifying detects and notes the parameter of intrinsic audio frequency in the calling procedure; Parameter under the testing process service recorder is followed the trail of intrinsic audio frequency.Here tone and saltus step parameter are provided with certain restriction, guarantee that the audio frequency of record belongs to effective ringing range.The dither technique that goes of windowing is used to obtain level and smooth square wave, conveniently to analyze efficiently.Because the audio frequency sluggishness has a large amount of variety classeses, for Accurate Analysis, their value need be carried out filtering.A simple low pass filter just can obtain good result, but also can introduce undesirable error on the maximal audio sluggishness simultaneously.The jitter filter that goes with windowing replaces just obtaining effect preferably on the audio frequency sluggishness.Go jitter filter keep a part sampled value be a tabulation.From the value of this filter output will be maximum the windowing.Result of the test shows goes jitter filter to get fine in work aspect the level and smooth audio frequency sluggishness.
In order to obtain accurate detection, signal is at first through the past jitter filter.Filtered signal is the identification of process audio identification process earlier.Following various restriction to the audio frequency different qualities need be verified in this process, is used for detecting the validity of audio frequency:
1. detected first audio frequency must include signal phase and rest stage;
2. audio frequency must be within the audiorange of the response ring of expecting;
3. saltus step must be within the scope that standard is indicated;
In case recognize a kind of effective tone signal, just its characteristic records got off so that ensuing voice signal is carried out continuous detection.The characteristic of record includes audio frequency sluggishness maximum in the saltus step of signal phase neutralisation signals.Behind the next audio frequency of record, just it is carried out continuous tracking and disappear up to audio frequency.Detected hysteresis compare with the parameter of noting too much departing from takes place after, perhaps after one section sluggishness, do not record audio frequency, the then algorithm report generation of replying.
Algorithm can further be divided into 3 separation process: transition detection, audio identification and continuous detecting.The transition detection process should spend jitter filter to input signal filtering, and calls suitable process when detecting the variation of audio frequency sluggishness.Before effectively audio frequency parameter obtained identification and record, the saltus step of audio frequency sluggishness caused calling the audio identification process.The filtered audio frequency hysteresis of audio identification process analysis procedure analysis is to obtain tone and saltus step information.If in a long relatively time, can not identify audio frequency, the overtime and report of algorithm detects and replys so.When a kind of effective audio frequency of identification is then noted its parameter.After audio frequency parameter was noted, the saltus step of filtered audio frequency hysteresis caused calling continuous detecting.The continuous detecting process with the audio frequency parameter noted as reference, each audio sample that checking is transmitted.If too many frame is compared with the audio value of expectation and is offset, so just mean to have detected and reply.
In the cdma system equipment that detects is responded in ring, it comprises a new frame, speech recognition equipment, voice signal checkout gear, waits for that next frame and connecting device constitute, not detecting legal voice signal in the new frame records legal voice to voice signal to speech recognition equipment, the new frame and detects, potential voice signal is to waiting for next frame, overtime to connecting device in the speech recognition equipment, and voice coincide to waiting for that next frame, too much shifted signal are to connecting device during voice signal detected.
Description of drawings:
Fig. 1 has shown a kind of snapshots in time of the sluggish information of audio frequency of typical ring.
Fig. 2 has shown the sluggish information of audio frequency.
The top secondary figure of Fig. 3 has shown two kinds of different sinusoidal waveforms.
Fig. 4 responds the equipment block diagram that detects to ring in the cdma system.
Embodiment:
When the CELP speech reconstructing, search respective coding this time and need use the audio frequency sluggishness.It is the calculating audio frequency of speech frame.For fixing tone, the audio frequency sluggishness is particularly useful in frequency analysis.Fig. 1 has shown a kind of snapshots in time of the sluggish information of audio frequency of typical ring.About 24 seconds of this ifm diagram span.Phone is answered in the time of 19 seconds.Do not have sound in the forward direction voice channel 2.5 seconds of beginning.2.5 between-19 seconds seconds, have periodic ring audio frequency to exist.First cycle period (2.5-4 second) of responding ring is incomplete, and this is because 2.5 seconds " deaf " stage of mobile device.Though the ringing signal in the jingle bell response stage is perfect flat stable phase very not, can the value of observing be 16.4 spike.Go jitter filter can eliminate spiking by employing, this will set forth in the paragraph afterwards.
Be necessary to notice that a bit zero sluggish stage may mean zero sound amplitude, may mean does not have available tone information yet.For the purpose of analyzing, we can not be equivalent to zero sound amplitude with there being audio-frequency information to regard as, because in empty frame, having only seldom needs the frequency information understood.Obviously, by the sluggish information of analyzing audio, we can also determine when that voice activity exists.This shows with figure in Fig. 2, wherein blue signal representative voice amplitude and green is the value of audio frequency sluggishness.The beginning of the beginning of audio frequency sluggishness and end and sound amplitude and end coincide very goodly.
The value of audio frequency sluggishness even good reference can also be provided in double-audio signal.The final audio frequency sluggishness of double-audio signal is the higher sound wave of mixed signal medium frequency, and it can be observed by two sinusoidal waveforms of stack different frequency in signal.The top secondary figure of Fig. 3 has shown two kinds of different sinusoidal waveforms: green waveform is 440 hertz a cosine wave, and red waveform is 480 hertz of cosine waves.Synthetic 460 hertz of waveforms with 40 hertz of modulation that can obtain in the Lower Half component of these waveforms.Because the audio frequency sluggishness demonstrates the upper frequency composition of mixed signal usually, so the expectation audio frequency sluggishness of this double-audio signal is 17.4 (just 460 hertz).Response ring among Fig. 1 and Fig. 2 is made up of 440 hertz and 480 hertz signals.In Fig. 1, can observe maximum audio frequency sluggishness and appear at the connection stage, reach 16.Wherein error only has (16-17.4)/17.4=-8%.
In the cdma system equipment that detects is responded in ring, it comprises a new frame 1, speech recognition equipment 2, voice signal checkout gear 4, wait for next frame 3 and connecting device 5, the signal output part one tunnel of a new frame 1 connects the signal input part of speech recognition equipment 2, another road connects the defeated number input of voice signal checkout gear 4, the signal output part one tunnel of speech recognition equipment 2 connects the signal input part of waiting for next frame 3, another road connects the signal input part of connecting device 5, and the signal output part one tunnel of voice signal checkout gear 4 connects the signal input part of waiting for next frame 3, another road connects the signal input part of connecting device 5.Not detecting legal voice signal in the new frame 1 connects speech recognition equipment 2 signal input parts, records legal voice and connect voice signal checkout gear 4 signal input parts.When potential voice signal was overtime in the speech recognition equipment 2, its signal output part connect the signal input part of connecting device 5.The too much shifted signal of voice connects the signal input part of connecting device 5 in the voice signal checkout gear 4.
What need understand is: the foregoing description is just to explanation of the present utility model, rather than to restriction of the present utility model, any innovation and creation that do not exceed the utility model connotation all fall into protection range of the present utility model.
Claims (4)
1, in a kind of cdma system the equipment that detects is responded in ring, it is characterized in that: it comprises a new frame (1), speech recognition equipment (2), voice signal checkout gear (4), wait for next frame (3) and connecting device (5), the signal output part one tunnel of a new frame (1) connects the signal input part of speech recognition equipment (2), another road connects the defeated number input of voice signal checkout gear (4), the signal output part one tunnel of speech recognition equipment (2) connects the signal input part of waiting for next frame (3), another road connects the signal input part of connecting device (5), and the signal output part one tunnel of voice signal checkout gear (4) connects the signal input part of waiting for next frame (3), another road connects the signal input part of connecting device (5).
2, in the cdma system according to claim 1 the equipment detect is responded in ring, be it is characterized in that: do not detect legal voice signal in the new frame (1) and connect speech recognition equipment (2) signal input part, record legal voice and connect voice signal checkout gear (4) signal input part.
3, in the cdma system according to claim 1 the equipment detect is responded in ring, be it is characterized in that: when potential voice signal was overtime in the speech recognition equipment (2), its signal output part connect the signal input part of connecting device (5).
4, in the cdma system according to claim 1 the equipment that detects is responded in ring, be it is characterized in that: the too much shifted signal of voice connects the signal input part of connecting device (5) in the voice signal checkout gear (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320128520 CN2737089Y (en) | 2003-12-22 | 2003-12-22 | Equipment for detecting ringing response in CDMA system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320128520 CN2737089Y (en) | 2003-12-22 | 2003-12-22 | Equipment for detecting ringing response in CDMA system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2737089Y true CN2737089Y (en) | 2005-10-26 |
Family
ID=35307815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320128520 Expired - Fee Related CN2737089Y (en) | 2003-12-22 | 2003-12-22 | Equipment for detecting ringing response in CDMA system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2737089Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017032070A1 (en) * | 2015-08-21 | 2017-03-02 | 中兴通讯股份有限公司 | Voice recognition method, apparatus, and computer storage medium |
-
2003
- 2003-12-22 CN CN 200320128520 patent/CN2737089Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017032070A1 (en) * | 2015-08-21 | 2017-03-02 | 中兴通讯股份有限公司 | Voice recognition method, apparatus, and computer storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4696031A (en) | Signal detection and discrimination using waveform peak factor | |
| CN101065951A (en) | Method and system for identifying a party answering a telephone call based on simultaneous activity | |
| US5007000A (en) | Classification of audio signals on a telephone line | |
| US20020051522A1 (en) | Speech recognition method of and system for determining the status of an answered telephone during the course of an outbound telephone call | |
| CN101534352A (en) | Line status detecting method, device and predictive outbound system | |
| CN107086039A (en) | A kind of acoustic signal processing method and device | |
| CN101193384B (en) | Method and mobile phone for filtering environmental noise via pattern recognition | |
| CN2737089Y (en) | Equipment for detecting ringing response in CDMA system | |
| CN1984171B (en) | System and method for realizing speech apparatus function test | |
| CN111491248A (en) | Audio detection system and audio detection method of electronic product | |
| CN101610428B (en) | Digital exchange test system, digital exchange and computer | |
| CN101160617A (en) | Auto-recognition method, system and device for speeches in a limited scope | |
| CN1555175A (en) | Method and device for detecting ring responce in CDMA system | |
| CN101998426A (en) | Handshaking signal processing method of voice assessment algorithm in voice test system | |
| CN101740079B (en) | Method for automatically testing audio output function based on interval tolerance method | |
| CN1663223A (en) | Method and apparatus for transmitting signaling tones over a packet switched network | |
| CN101668090A (en) | Text telephone detection method and device, and outbound detection system | |
| JP3687412B2 (en) | Method, apparatus and system for evaluating service quality in packet switching network | |
| US6553061B1 (en) | Method and apparatus for detecting a waveform | |
| CN101931709B (en) | Quality control method, device and system | |
| CN101577766A (en) | Method, device and system for detecting signal voice | |
| CN103780770B (en) | A kind of crosstalk detecting method and device | |
| CN1228957C (en) | Double magnetic hysteresis signal detecting circuit | |
| KR100314659B1 (en) | Automatic transformation device and method for telephone speech database | |
| CN2613952Y (en) | Apparatus for collecting real communication process and state data of any telephone number |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20051026 Termination date: 20100122 |