CN101309477A - Ringing implementing method for mobile terminal - Google Patents
Ringing implementing method for mobile terminal Download PDFInfo
- Publication number
- CN101309477A CN101309477A CNA2008100404936A CN200810040493A CN101309477A CN 101309477 A CN101309477 A CN 101309477A CN A2008100404936 A CNA2008100404936 A CN A2008100404936A CN 200810040493 A CN200810040493 A CN 200810040493A CN 101309477 A CN101309477 A CN 101309477A
- Authority
- CN
- China
- Prior art keywords
- vibration
- audio
- frequency
- buffered
- audio frequency
- 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.)
- Pending
Links
Images
Landscapes
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
The invention relates to a ringing tone realizing method at a mobile terminal. The invention aims to provide a method for realizing ringing tone by using a vibration loudspeaker. In the method, specific voice frequency is played to replace the motor vibration through the vibration loudspeaker, the ringing reminding for short messages and calls at the mobile terminal can be realized, special switch buffering processing to a voice frequency with constant frequency (selected according to the vibration frequency of the vibration loudspeaker) is performed, a ringing voice frequency is generated, the speaker is ensured to be without low noise and pa sound generated by the switch when the speaker plays the voice frequency by the reasonable adjustment of the switch buffering time and the amplitude of the voice frequency, and the ringing reminding at the mobile terminal can be realized effectively. The method has the advantages that the electromagnetic interference is reduced, the hardware design is simplified, the mobile terminal cost is also reduced, and the after-sale maintenance is facilitated.
Description
Technical field
The present invention relates to a kind of ring implementation method of portable terminal, be specifically related to a kind of method that replaces motor oscillating realization ring by vibrating speaker broadcast special audio.
Background technology
Ring almost is the indispensable function of present all portable terminals, for example short message ring, incoming call ring etc., and ring as the signal alerting pattern, has been avoided the interference to other people with no acoustic vibration, therefore is widely used.The ring of portable terminal all realizes by vibrating motor usually, for example adopts the micromachine of band eccentric hammer, and this method comparative maturity is reliable, is widely adopted.But use this method of micromachine to dispose special motor device, after-sale service corresponding special the maintenance also need be arranged as mobile phone, improved the mobile phone cost, and the motor device itself takes up room, increased the mobile phone volume, and may influence handset capability because machine operation produces electromagnetic interference to mobile phone.
Summary of the invention
The objective of the invention is to replace vibrating motor to realize that ring is to solve the problems of the technologies described above by vibrating speaker.
Vibrating speaker mainly is to be operated in speaker mode to the above signal generation of 500Hz, and near vibration frequency (150 ~ 200Hz, the vibration frequency of different loud speakers may be different) mainly show as vibration, the present invention promptly utilizes this point to realize realizing ring with loudspeaker vibration.
The present invention plays special audio by vibrating speaker and replaces motor oscillating, and rings such as the short message of realization portable terminal, incoming call are reminded, and concrete technical scheme is as follows:
A kind of ring implementation method of portable terminal is characterized in that: play a specific vibration audio frequency by vibrating speaker and cause loudspeaker vibration.
Wherein, the vibration audio frequency frequency in the vibration frequency range of vibrating speaker, and should the vibration audio frequency constant be the resonance frequency f0 of the vibration frequency of this loud speaker.
Above-mentioned vibration audio frequency has passed through the switch buffered, and promptly during the switch audio frequency, audio amplitude changes individual progressive formation, to slow down the action that audio frequency opens and closes, avoids because of switch audio frequency moment audio frequency signal amplitude excessive " whip " sound of generation in a moment that jumps.Specifically comprise following processing mode: buffered, secondary buffer processing, index buffered or a stepped change process.
Buffered for the vibration audio frequency exists two time constant ta and tb with by-pass cock buffer time length.
And the wave function f (t) to various buffered audio can directly multiply by an audio amplitude coefficient k (0＜k≤1), strengthens vibration or eliminates noise by adjusting k.
Play when finally, the vibration audio frequency will be converted into midi format or ADPCM format audio file confession ring and call.
The invention has the beneficial effects as follows: realized effective ring, do not had " whip " sound and other noises, reduced cost, save the space, made things convenient for the components and parts layout, eliminated the electromagnetic interference that machine operation produces, reduced the after-sales service difficulty.
Description of drawings
The hardware principle block diagram that Fig. 1 realizes for ring.
Fig. 2 is the audio waveform envelope line of constant amplitude.
Fig. 3 is the waveform envelope line of switch buffered audio.
Fig. 4 is a buffered audio envelope function curve schematic diagram.
Fig. 5 is a secondary buffer audio pack winding thread function curve schematic diagram.
Fig. 6 is an index buffered audio envelope function curve schematic diagram.
Fig. 7 is T=2, ta=0.5, the buffered audio oscillogram of tb=1.5.
1 is spreadtrum SC6600D process chip among Fig. 1, and 2 is D class audio frequency power amplifier TPA2010D, and 3 is vibrating speaker, and 4 is the non-vibration loud speaker.
The abscissa of Fig. 2～Fig. 3 is time t, and ordinate is the respective value of audio waveform envelope function f (t) at different time points.
The abscissa of Fig. 4～Fig. 6 is time t, and unit is second, T indication cycle, and ordinate is the respective value of audio waveform envelope function f (t) at different time points, the coefficient of k for adjusting.
Two parts are represented the waveform of two sound channels respectively about Fig. 7, and abscissa is time t, and ordinate is the audio volume control range value.
Embodiment
Below, describe the details and the working condition of the method that proposes according to the present invention in conjunction with the accompanying drawings and embodiments in detail.
The hardware principle block diagram of the embodiment of the invention as shown in Figure 1, on spreadtrum SC6600D platform 1, realize, select D class audio frequency power amplifier TPA2010D2 for use, gain is set to 6 times, output two loud speakers in parallel, one of them is a vibrating speaker 3, and another one is a non-vibration loud speaker 4, and vibrating speaker is selected the KFSV20D4.9 loud speaker in prosperous spring for use.
In fact the realization of ring of the present invention is exactly the vibrating speaker displaying audio file.Vibrating speaker has two kinds of mode of operations at least: speaker mode and vibration mode.Under the speaker mode, be mainly used in and sound, as music or voice etc.; Under the vibration mode, main response is vibration.The response that makes the loudspeaker plays audio frequency mainly is vibration (rather than sounding), to determine that at first the frequency of this audio frequency is in vibration frequency (with reference to the specification of the vibrating speaker) scope of vibrating speaker, preferably constant is the f0 (resonance frequency that each vibrating speaker all has) of the vibration frequency of this loud speaker, so that vibrating speaker is operated under the vibration mode.The frequency range that vibrating speaker shows as vibration is generally less than 500Hz, considers the feasibility of vibrating speaker design and the consistency problem in the production, and given f0 scope is 180 ± 5Hz.
During the loudspeaker plays audio file, need the switch audio frequency power amplifier, and the switch of audio frequency power amplifier often brings " whip " sound, this problem is especially serious when the vibration audio frequency of switch certain frequency constant amplitude.For eliminating " whip " sound, vibration audio frequency (establishing total time is T) to this certain frequency handles accordingly: and a bit of time of the beginning of audio frequency (t＜ta), audio amplitude progressively increases to designated magnitude since 0, keep a period of time then (ta＜t＜tb), in the end (tb＜t＜T), audio amplitude progressively is reduced to 0 in a bit of time.The processing method of this audio frequency is called the switch buffered, and the audio file of treated mistake becomes the switch buffered audio.
If the vibration audio frequency of certain frequency constant amplitude, the envelope of its waveform should be a rectangle, as shown in Figure 2; And the waveform envelope line of switch buffered audio as shown in Figure 2, note, envelope among Fig. 3 is a simple representative, and changes in amplitude is the once linear variation in the short time of its opening and closing, claims that the switch buffered audio through the once linear buffered is a buffered audio.Also can be arranged to multiple algorithms such as secondary, three times or index variation in fact, even can be arranged to stepped incremental variations, handle fairly simplely, and can get a desired effect, adopt buffered audio in the present embodiment one time in view of buffered audio.
If the total time of a buffered audio is T, during t＜ta, its signal amplitude is from 0 linear change to 1; During ta＜t＜tb, signal amplitude maintains 1; During tb＜t＜T, signal amplitude is from 1 linear change to 0.As shown in Figure 4, the first half available functions f (t) of this buffered audio envelope expression:
Signal waveform available functions g (t) expression of corresponding this buffered audio:
At the audio frequency composing software (for example: make an above-mentioned buffered audio GoldWave).An at first newly-built audio file, it is 2 that channel number is set, and sample rate is 44100, and length is 1.8s.Open the formulat calculator expression evaluator of GoldWave then, frequency f be set in the frame of its expression formula, insert following expression formula for vibration f0 (as 180Hz):
Sin (2*pi*f*t) * (t/ta) * (t＜ta)+sin (2*pi*f*t) * (* of t＞ta) (t＜tb)+sin (2*pi*f*t) * ((T-t)/(T-tb)) * (* (t＜T) (formula 3) of t＞tb)
Attention: T, ta need to replace into respective value respectively with tb in the formula 3, condition among the function expression g (t) occurs with the form of the product factor respectively in the expression formula of GoldWave, and must be write as " * (* of t＞ta) (t＜tb) " rather than " * (t＜t＜tb) ".The audio frequency of so final generation is exactly a buffered audio that needs, and this audio file is saved as MP3 or WAV form.
Present embodiment adopts the buffered audio of a 180Hz, T=2, ta=0.5, tb=1.5, its waveform g (t) as shown in Equation 4:
Then the expression formula of this buffered audio in GoldWave is as shown in Equation 5:
Sin (2*pi*f*t) * (2*t) * (t＜0.5)+sin (2*pi*f*t) * (t＞0.5) * (t＜1.5)+sin (2*pi*f*t) * (4-2*t) * (t＞1.5) * (t＜2) (formula 5)
The audio volume control of corresponding generation as shown in Figure 7, two parts are represented the waveform of two sound channels respectively up and down.
The MP3 audio file that generates in GoldWave is bigger, and consider the complexity of software processes MP3 audio file, short message prompt tone in the portable terminal fuselage internal memory and the audio files that come electric bell sound great majority for MIDI (the digitlization interface of musical instruments) or ADPCM (adaptive difference pulse code modulation) form, when coming the electric bell sound to be MP3, these mp3 files come from external memory card often.So a buffered audio of MP3 format need be treated to portable terminal MIDI or adpcm audio commonly used.
Experimental results show that, a buffered audio in the foregoing description can be eliminated " whip " sound of ring switch effectively, if effect is not satisfactory, can attempts modification time parametric t a and tb and adjust switch buffer time length, in the hope of reaching the ability that suppresses preferably.
Select suitable vibration frequency can make vibrating speaker be operated in vibration mode (rather than speaker mode), and the audio frequency after buffered is mainly used to " whip " sound of suppressed ringing switch, but the vibration audio frequency of Sheng Chenging still may also have noise in broadcast like this, this mainly is because after the audio frequency power amplifier amplification of this vibration audio frequency through portable terminal, audio volume control occurs ending near crest or trough.General music file generally can signal amplitude not remain unchanged in some time periods because its audio amplitude changes, so the people's ear that ends of moment may can not listened.But for the vibration audio frequency, because its signal amplitude remains unchanged in a period of time, so, occur tangible noise easily in case signal ends.
This because audio frequency can be eliminated by the amplitude that reduces audio frequency by the noise that occurs, mainly contain following 3 kinds of methods: the first, the match circuit of adjustment audio frequency power amplifier front end reduces the audio frequency power amplifier gain on the hardware; The second, adjust audio gain by software; The 3rd, before generating the vibration audio frequency, directly adjust the wave-shape amplitude of vibration audio frequency.Because preceding two kinds of methods may exert an influence for a short time to the loud of other audio files, so adopt the third method herein.Wave function f (t) to the buffered audio that draws previously directly multiply by an audio amplitude coefficient k (0＜k≤1), be equivalent to this audio signal is carried out attenuation processing, if decay too big (that is, k is too little), vibrating effect may be not too obvious, can suitably increase k; If it is too little to decay, may also have noise, can suitably reduce k.Because signal amplitude is not only relevant with audio frequency itself, also relevant with side circuit (for example the type of audio frequency power amplifier is provided with gain), so the size of k value need be regulated in side circuit, audio amplitude coefficient k value chooses 0.8 in the present embodiment, can realize effective vibration.
Other buffered audio implementation procedures such as secondary, index and above embodiment are roughly the same, only the audio pack winding thread is distinguished to some extent, instantiation is respectively as Fig. 5, shown in Figure 6, wherein also by adjusting similar buffer time parametric t a and tb and audio amplitude coefficient k parameter, to eliminate " whip " sound or other noises.
Utilize above method that the vibration audio frequency is provided with and handles, can play the vibration audio frequency by vibrating speaker substantially and replace motor oscillating, " whip " mail topic when avoiding the noise of ring or switch realizes that effectively the ring of portable terminal is reminded.
Being preferred embodiment of the present invention only in sum, is not to be used for limiting practical range of the present invention.Be that all equivalences of doing according to the content of the present patent application claim change and modification, all should be technology category of the present invention.
Claims (8)
1. the ring implementation method of a portable terminal is characterized in that: play a specific vibration audio frequency by vibrating speaker and cause loudspeaker vibration.
2. the ring implementation method of portable terminal according to claim 1, it is characterized in that: the frequency of described vibration audio frequency is in the vibration frequency range of vibrating speaker.
3. the ring implementation method of portable terminal according to claim 2 is characterized in that: the resonance frequency f0 of the constant vibration frequency for this loud speaker of described vibration audio frequency.
4. according to the ring implementation method of claim 1 or 2 or 3 described a kind of portable terminals, it is characterized in that: described vibration audio frequency has passed through the switch buffered, and promptly during the switch audio frequency, audio amplitude changes individual progressive formation.
5. the ring implementation method of portable terminal according to claim 4, it is characterized in that: described switch buffered comprises: buffered, a secondary buffer are handled, index buffered or stepped change process.
6. the ring implementation method of portable terminal according to claim 4 is characterized in that: for the vibration audio frequency of described switch buffered, have two time constant ta and the tb time span with the by-pass cock buffering.
7. the ring implementation method of portable terminal according to claim 4, it is characterized in that: the wave function g (t) to various buffered audio directly multiply by an audio amplitude coefficient k (0＜k≤1), strengthens vibration or eliminates noise by adjusting k.
8. the ring implementation method of portable terminal according to claim 1 is characterized in that: will vibrate to play when audio frequency is converted to midi format or ADPCM format audio file confession ring and call.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100404936A CN101309477A (en) | 2008-07-11 | 2008-07-11 | Ringing implementing method for mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100404936A CN101309477A (en) | 2008-07-11 | 2008-07-11 | Ringing implementing method for mobile terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101309477A true CN101309477A (en) | 2008-11-19 |
Family
ID=40125647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100404936A Pending CN101309477A (en) | 2008-07-11 | 2008-07-11 | Ringing implementing method for mobile terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101309477A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101552822A (en) * | 2008-12-31 | 2009-10-07 | 上海闻泰电子科技有限公司 | An implementation method of a mobile terminal ring |
| CN102957792A (en) * | 2011-08-19 | 2013-03-06 | Lg电子株式会社 | Mobile terminal and vibration method thereof |
-
2008
- 2008-07-11 CN CNA2008100404936A patent/CN101309477A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101552822A (en) * | 2008-12-31 | 2009-10-07 | 上海闻泰电子科技有限公司 | An implementation method of a mobile terminal ring |
| CN102957792A (en) * | 2011-08-19 | 2013-03-06 | Lg电子株式会社 | Mobile terminal and vibration method thereof |
| US8755844B2 (en) | 2011-08-19 | 2014-06-17 | Lg Electronics Inc. | Mobile terminal and vibration method thereof |
| CN102957792B (en) * | 2011-08-19 | 2015-02-25 | Lg电子株式会社 | Mobile terminal and vibration method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102024481B (en) | Method and device for extracting vibration information from audio file and vibrating device | |
| CN101552822A (en) | An implementation method of a mobile terminal ring | |
| US6212496B1 (en) | Customizing audio output to a user's hearing in a digital telephone | |
| CN101354885B (en) | Active noise control system | |
| US20050175185A1 (en) | Audio bandwidth extending system and method | |
| US9002034B2 (en) | Method and system for audio level detection and control | |
| KR20130086590A (en) | Sound to haptic effect conversion system using amplitude value | |
| US20100202622A1 (en) | Automatic generation of audible alert according to ambient sound | |
| CN102498482B (en) | System for adaptive voice intelligibility processing | |
| US8498667B2 (en) | System and method for mixing audio with ringtone data | |
| JP5027127B2 (en) | Improvement of speech intelligibility of mobile communication devices by controlling the operation of vibrator according to background noise | |
| JP2013009236A (en) | Portable terminal device, and sound-adjustment method and program therefor | |
| JP2001186221A (en) | Improvement of digital communication equipment of relevant equipment | |
| CN101257533A (en) | Mobile terminal for intellectualized controlling sound volume of loudspeaker and its implementing method | |
| CN101309477A (en) | Ringing implementing method for mobile terminal | |
| KR100468987B1 (en) | Portable terminal device and effect applying method thereof and recording medium | |
| CN114205700A (en) | Earphone device and tactile feedback method thereof | |
| JP4348936B2 (en) | Portable terminal device and method for increasing output volume thereof | |
| CN202737967U (en) | Multi-decoder audio system and mobile equipment including the audio system | |
| CN1857028B (en) | Loudspeaker sensitive sound reproduction | |
| JPH09152890A (en) | Audio equipment | |
| JP2012194295A (en) | Speech output system | |
| KR100695368B1 (en) | Sound processing device of mobile terminal to output high quality sound | |
| JP3717809B2 (en) | Mobile phone | |
| EP1357733A1 (en) | Audio bandwidth extending system and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20081119 |