CN102290045A - Method and device for controlling music rhythm and mobile terminal - Google Patents
Method and device for controlling music rhythm and mobile terminal Download PDFInfo
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- CN102290045A CN102290045A CN 201110124529 CN201110124529A CN102290045A CN 102290045 A CN102290045 A CN 102290045A CN 201110124529 CN201110124529 CN 201110124529 CN 201110124529 A CN201110124529 A CN 201110124529A CN 102290045 A CN102290045 A CN 102290045A
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Abstract
The invention discloses a method for controlling music rhythm. The method is suitable for a mobile terminal, and comprises the following steps: S1, detecting an inclination angle of the mobile terminal; S2, outputting control data of music rhythm corresponding to the inclination angle when the change of the inclination angle is more than a certain angle; and S3, outputting a control signal to change the music play rhythm played by the mobile terminal according to the control data. The music rhythm can be changed by the method provided by the invention on the basis of the change of the inclination angle of the mobile terminal so that the operation of the user using the mobile terminal is simpler.
Description
Technical field
The present invention relates to the music field, relate in particular to a kind of method, device and portable terminal of controlling music rhythm.
Background technology
The intellectuality of portable terminal and entertainment orientation become the trend that becomes more and more popular, present portable terminal substantially all has music playback function, and the mode of portable terminal control music rhythm probably has two kinds, and a kind of is keyboard by portable terminal, and another kind is the touch-screen by portable terminal.The mode of these two kinds of playing back music must be carried out meticulous operation by user's finger, when for example being not easy to operate, user's inoperation just can't carry out the change of music rhythm, therefore, be badly in need of at present a kind ofly can solving the method that can not change music rhythm in the known technology along with the changes in balance of portable terminal.
Summary of the invention
In order to address the above problem, a kind of purpose of embodiments of the invention provides a kind of method of controlling music rhythm, can change the sampling rate of music by the gravity sensing signal that utilizes portable terminal, realizes accelerating or the rhythm of the music that slows down.
Therefore, according to one embodiment of present invention, provide a kind of method of controlling music rhythm, this method is applicable to portable terminal, it is characterized in that, said method comprising the steps of:
S1: the angle of inclination of detecting portable terminal;
S2: during greater than certain angle, export the control data of the music rhythm corresponding with described angle of inclination in the variation at described angle of inclination;
S3:, export a control signal to change the music rhythm of described mobile terminal playing according to described control data.
According to a scheme of the present invention, described step S1 obtains the angle of inclination of described portable terminal by the gravity sensing that detects portable terminal.
According to a scheme of the present invention, among the described step S2, described control data is and the corresponding interval value in described angle of inclination.
According to a scheme of the present invention, in step S3, according to described interval value, seek its corresponding music sample rate, and export described control signal to change the music rhythm of described broadcast according to searching out music sample rate.
According to a scheme of the present invention, described method also comprises step S4: described control signal is exported to a display device, to present by the music rhythm and the angle of inclination of the balance pattern in this display device with described broadcast.
Another kind of embodiment of the present invention can also separate the problem that must not truly reflect music frequency spectrum by three-dimensional mode.Therefore described method of the present invention also comprises step:
S5: the frequency spectrum to the music of described broadcast is sampled at regular intervals, and the frequency spectrum that uses Fourier pair to sample carries out spectrum analysis, the sampled data after obtaining to analyze;
S6: the data of being sampled are carried out normalized, and the data after will handling are input to the frequency spectrum that shows the music of described broadcast in the display device by described display device, and wherein said display device also is included on four different directions and shows the data strip that frequency spectrum data changes in three-dimensional mode.
According to a scheme of the present invention, described method also comprises step:
S7: described control signal is exported to described display device, change the color of the data strip of described display device according to this control signal.
The present invention further also provides a kind of device of controlling music rhythm, and this device is applicable to portable terminal, and described device comprises:
Detection module is used to detect the angle of inclination of portable terminal, and exports this angle of inclination with certain angle variation range;
Output module is used in the variation at described angle of inclination exporting the control data of the music rhythm corresponding with described angle of inclination during greater than certain angle;
Control module is used for described control data and exports a control signal to change the music rhythm of described mobile terminal playing.
According to a scheme of the present invention, described device also comprises:
Display device is used to receive described control signal, and described current music rhythm and angle variation is presented by the balance pattern in this display device according to this described control signal.
According to a scheme of the present invention, described device also comprises:
Spectrum analysis module is used for the frequency spectrum of the current music rhythm after changing is sampled at regular intervals, and the frequency spectrum that uses Fourier pair to sample carries out spectrum analysis, the sampled data after obtaining to analyze;
Processing module, the data after being used for the data of being sampled are carried out normalized and export this processing;
Display device is included on four different directions in three-dimensional mode and shows the data strip that frequency spectrum data changes, be used to receive after the described processing data and according to the frequency spectrum of this data presentation music rhythm.
According to a scheme of the present invention, the color that described display device also is used to receive described control signal and changes the data strip of described display device according to this control signal.
The present invention also provides a kind of portable terminal, is provided with the device of above-mentioned control music rhythm.
According to embodiments of the invention, the present invention can change music rhythm based on the angle change of portable terminal, thereby the operator's of use portable terminal operation is easier, and makes the music with different bent wind have more graceful rhythm; Further the present invention can also truly reflect music frequency spectrum in three-dimensional mode, thereby makes portable terminal intelligent more.
Description of drawings
Fig. 1 is the process flow diagram according to the control music rhythm method of the embodiment of the invention;
Fig. 2 is the process flow diagram of the control music rhythm method of embodiment in addition according to the present invention;
Fig. 3 for according to another embodiment of the invention reflect the process flow diagram of music frequency spectrum in three-dimensional four-way mode;
Fig. 4 is the synoptic diagram of display device according to an embodiment of the invention;
Fig. 5 is the block diagram of the device of control music rhythm according to an embodiment of the invention;
Fig. 6 is the block diagram of the device of control music rhythm according to another embodiment of the invention.
Embodiment
To describe specific embodiments of the invention in detail below.Should be noted that the embodiments described herein only is used to illustrate, be not limited to the present invention.
Before introducing design of the present invention, explain the term of using in the present invention earlier, so that understand technical scheme of the present invention better.
Frequency spectrum: any variable that complicated form is arranged on time or the space length that shows can be decomposed into the resonance of many various amplitudes and different frequency, the figure that the amplitude of these resonance is arranged by frequency (or cycle).
Sampling rate: defined per second extracted and formed discrete signal from continuous signal number of samples, unit represents with hertz (Hz).The inverse of sampling rate is sampling period (also claiming the sampling time), the time interval between its expression sampling.
Fourier transform FFT: Fourier transform can will satisfy certain function table of certain condition be shown as the linear combination of trigonometric function (sine and/or cosine function) or their integration.In different research fields, Fourier transform has multiple different variant form, as continuous fourier transform and discrete Fourier transformation.
The present invention is by combining the tilt variation of the portable terminal broadcast rhythm with music, to realize only just can realizing on the portable terminal acceleration or the deceleration of music by the inclination portable terminal, simplified the method for control music, make the more convenient to operate of operator, and make portable terminal intelligent more.
Therefore, the present invention proposes a kind of method of controlling music rhythm, as shown in Figure 1, this method said method comprising the steps of applicable to the portable terminal of various models:
S1: the angle of inclination of detecting portable terminal;
S2: during greater than certain angle, export the control data of the music rhythm corresponding with described angle of inclination in the variation at described angle of inclination;
S3:, export a control signal to change the music rhythm of described mobile terminal playing according to described control data.
In conjunction with specific embodiments and accompanying drawing, will describe the present invention in detail.
The present invention at first needs to obtain the angle of inclination of portable terminal.For example, can move the angle of inclination that the induction gravity installation in end is exported the portable terminal that is detected by being located at, described induction gravity installation for example can utilize piezoelectric effect to realize the gravity sensing of portable terminal, so-calledly utilize piezoelectric effect in simple terms, the component size of measuring inner a slice weight (weight and piezoelectric patches are made of one) gravity quadrature both direction is exactly judged the tilt variation of horizontal direction, for example can also utilize the built-in accelerometer of portable terminal to realize the gravity sensing of portable terminal, the acceleration of being adopted is counted and is divided into X-axis, the triaxial accelerometer of Y-axis and Z axle, wherein these three solid spaces that axle constituted are enough to detect the various operational motions on the portable terminal, and the angle that is normally constituted with these three axles (or any two axles) when practical application is calculated the angle that portable terminal tilts.Detected angle of inclination for example can for-60 the degree to 60 the degree between angle, and can be according to the demand of the music rhythm of being controlled, for example change and send variable signal with certain angular range, to save the expense that frequent change music is brought with angles every 10 degree or 20 degree.Also promptly, can spend to 40 degree with respect to level 60 selecting the output angle scope in a plurality of detected angles, 40 spend to 20 degree, and 20 spend to 10 degree, and 10 spend-10 degree, and-10 spend-20 degree ,-20 to-40 degree, and-40 spend any one angle between-60.Positive negative angle described here is meant degree of tilt all around with respect to the horizontal plane, as, the angle that can with respect to the horizontal plane be tilted to the left is set to positive angle, the angle that the angle that with respect to the horizontal plane is tilted to the right is set to bear, the angle that also can with respect to the horizontal plane be tilted to the right simultaneously is set to positive angle, and the angle that the angle that with respect to the horizontal plane is tilted to the right is set to bear.It will be appreciated that the present invention is not limited to above-mentioned detected angle, but any portable terminal and easy detected angle of being applicable to all can.
The induction of portable terminal is very sensitive, trickle variation just can learn the angle value of variation, if changing, each angle just removes to change music rhythm, change if not tangible angle, music rhythm changes neither be clearly, if change music rhythm continually, the efficient of portable terminal is not high, further, music under the not every speed all is to have audibility, therefore based on the consideration of efficient, audibility and significant change, preferably, the present invention only carries out the change of music rhythm at the variation of some angle.
Therefore, in step S2, during greater than certain angle, export the control data of the music rhythm corresponding with described angle of inclination in the variation at described angle of inclination.For example, when the variation at described angle of inclination is spent greater than 20, promptly export the control data of the music rhythm corresponding with described angle of inclination with the variation of 20 degree, preferably, this control data can be the interval value corresponding to described angle of inclination.For example, arbitrary angle of inclination between above-mentioned-60-60 degree can be converted to-interval value of 0.4-0.4, with the interval value of the arbitrary angle of inclination between-10 to 10 degree corresponding to-0.1-0.1,-20 degree to the arbitrary angle of inclination between-10 degree is corresponded to-interval value of 0.2--0.1,-40 degree to the arbitrary angle of inclination between-20 degree is corresponded to-interval value of 0.3--0.2, arbitrary angle of inclination between-60 to-40 degree is corresponded to-interval value of 0.4--0.3, arbitrary angle of inclination between 10 to 20 degree is corresponded to the interval value of 0.1-0.2,20 degree to the arbitrary angle of inclination between 40 degree is corresponded to the interval value of 0.2-0.3, and the interval value that 40 degree is corresponded to 0.3-0.4 to the arbitrary angle of inclination between 60 degree.Certainly the present invention can be not limited to the interval value that above-mentioned example goes out, and any interval value can correspond to the angle of inclination in a section.
According to the control data of the output music rhythm corresponding with described angle of inclination, export a control signal, come the broadcast rhythm of control break music by this control signal.According to one embodiment of present invention, can search the corresponding music sample rate that sets at this interval value according to interval value, then according to the music sample rate that searched out output control signal controlling the sampling rate of current music, thereby change the broadcast rhythm of music.Therefore, in the present invention, the corresponding relation between pre-set interval value and the sampling rate, so that when detecting the angle variation that falls in certain interval value, can go to search corresponding sampling rate according to this interval value, thus the rhythm of control music.
For example, the sampling rate that is found can be 80,90,100,110,120,130 and 140, and corresponding respectively interval value is-0.4 to-0.3 ,-0.3 to-0.2 ,-0.2 to-0.1 ,-0.1 to 0.1,0.1 to 0.2,0.2 to 0.3,0.3 to 0.4.Then, change the broadcast rhythm of music according to the music sample rate that finds.For example, when the sampling rate that finds is 80, can be with before this music rhythm Change Example as slowing to 80 sampling rate, and when the sampling rate that finds is 140, music rhythm Change Example that can will be before this is as adding the sampling rate near 140, thereby realized the control of music rhythm.
The present invention also can be provided with a display device further, and this display device comprises and can change and the balance pattern of angle presentation variation according to music rhythm.As shown in Figure 2, so the present invention also can comprise step S4: described control signal is exported to display device, to present by the music rhythm and the angle of inclination of the balance pattern in this display device with described mobile terminal playing.
For example, when the rhythm of music changed, this display device will receive the signal that music rhythm changes, and then balance is rotated to the angle identical with the portable terminal angle of inclination, also promptly, the balance in the display device is understood the real-time change along with the inclination of portable terminal in real time.Here, initialized angle of inclination can be set for the balance in the display device, for example be-60 the degree to 60 the degree between arbitrarily angled.
Further, for example, this balance also can be along with the change of music rhythm its Show Color of real-time change.It will be appreciated that display device involved in the present invention not only comprises the balance pattern, also can comprise other display pattern, and the form of expression of balance also can be diversity, the change of music rhythm be presented as long as can be in real time.
In aforementioned content of the present invention, though can change the rhythm of music according to the changes in balance (also being tilt variation) of portable terminal, but the frequency spectrum data that can't reflect current music truly in the mode of solid, therefore, further, the present invention carries out spectrum analysis to the music of playing and the data after the spectrum analysis is shown by display device.
Therefore, in the time of control music rhythm that the present invention describes in the above, also further can mode truly reflect music frequency spectrum, thereby method of the present invention with three-dimensional four-way (also can be described as 3D four-way frequency spectrum), as shown in Figure 3, also comprise step:
S5: the frequency spectrum to the music of described broadcast was sampled every the regular hour, and the frequency spectrum that uses Fourier pair to sample carries out spectrum analysis, the sampled data after obtaining to analyze;
S6: the data of being sampled are carried out normalized, and the data after will handling are input to the frequency spectrum that shows the music of described broadcast in the display device by described display device, and wherein said display device is included in the data strip of stereo display frequency spectrum data on four different directions.
Describe above-mentioned steps in detail below in conjunction with specific embodiment and Fig. 4.
According to one embodiment of present invention, because the variation of reflection music frequency spectrum does not need the entire spectrum of current music, thereby the present invention samples to current music frequency spectrum earlier, for example can be 1/10 second the interval time of sampling, be to obtain one time frequency spectrum data in per 1/10 second, the data number of sampling can be and is no more than 512 any number, for example can be 32.It will be appreciated that the number of above-mentioned sampling interval time and sampling is not limited thereto, any sampling interval time suitable and that can reflect spectral change and number of samples are all applicable to the present invention.Then to the sampled data after the sampled data use Fourier transform FFT acquisition spectrum analysis.
For the ease of showing the spectral change of current music, can carry out normalized to sampled data, for example, sampled data after the spectrum analysis is converted to integer between 1 to 10, perhaps be converted into the integer of other suitable interval, to allow to be suitable for demonstrating the variation of frequency spectrum by display device.
According to one embodiment of present invention, display device of the present invention also is included in four different directions and shows the data strip that frequency spectrum data changes in three-dimensional mode.As shown in Figure 5, for example 8 data strips can be set on each direction of four direction, each data strip can extend to the center to be certain angle (for example 15 degree) with vertical direction or horizontal direction, thereby the data strip of four direction can spatially present stereoscopic sensation.Further, each data strip can show the variation of frequency spectrum with for example 10 ranks.For example, sampled data after the normalization is inputed to display device, the data strip of each direction (for example in this display device, four direction has 32 data strips) all can be and the conversion height according to the size variation of the sampled data of being imported, when the sampled data real-time change imported, data strip in this display device is change in elevation in real time also, thereby can reflect the spectral change of current music truly.
Further, according to another embodiment of the invention, the present invention also can reflect the variation of music rhythm in real time.Thereby the method for the invention also comprises:
S7: described control signal is exported to described display device, change the color of the data strip of described display device according to this control signal.
For example, when the changes in balance owing to portable terminal changes music rhythm, also the change signal of music rhythm can be inputed to the data strip of this display device, on color, to demonstrate the change of music rhythm.For example, if the change of music rhythm has seven kinds, so also can come the video data bar, for example with seven kinds of colors, when the inclination portable terminal switched between seven kinds of frequencies, data strip can be transformed into successively that seven kinds of colors are for example blue, purple, green, orange, powder, blackish green and red.
After each music rhythm conversion, the present invention also continue with certain interval time the music after to conversion rhythm carry out spectrum analysis so that data strip can show the spectral change of new music rhythm.
The present invention also further provides a kind of device 100 of controlling music rhythm, and this device is applicable to portable terminal, and as shown in Figure 5, described device comprises:
According to an embodiment, as shown in Figure 6, described device 100 also comprises:
According to an embodiment, as shown in Figure 6, described device 100 also comprises:
According to an embodiment, the color that described display device 140 also is used to receive described control signal and changes the data strip of described display device 140 according to this control signal.
The device of control music rhythm provided by the invention can be a portable terminal, and this portable terminal is touch-type mobile terminal preferably, and described touch-type mobile terminal for example is touch smart mobile phone, touch panel computer, touch MP3 etc.This portable terminal can comprise display screen, processor and storer, processor can be according to the step in the method that provides among the instruction of storing in the storer or aforementioned each embodiment of program execution, realize the function of above-mentioned corresponding functional modules, can control the rhythm of music.
The present invention also further provides a kind of portable terminal of device of the control music rhythm that adopts above-mentioned setting, thereby makes this portable terminal operation easier.
Though described the present invention with reference to several exemplary embodiments, should be appreciated that used term is explanation and exemplary and nonrestrictive term.The spirit or the essence that do not break away from invention because the present invention can specifically implement in a variety of forms, so be to be understood that, the foregoing description is not limited to any aforesaid details, and should be in the spirit and scope that claim limited of enclosing explain widely, therefore fall into whole variations in claim or its equivalent scope and remodeling and all should be the claim of enclosing and contain.
Claims (10)
1. method of controlling music rhythm, this method is applicable to portable terminal, it is characterized in that, said method comprising the steps of:
S1: the angle of inclination of detecting portable terminal;
S2: during greater than certain angle, export the control data of the music rhythm corresponding with described angle of inclination in the variation at described angle of inclination;
S3:, export a control signal to change the music rhythm of described mobile terminal playing according to described control data.
2. the method for control music rhythm according to claim 1 is characterized in that, described step S1 obtains the angle of inclination of described portable terminal by the gravity sensing that detects portable terminal.
3. the method for control music rhythm according to claim 1 and 2 is characterized in that, among the described step S2, described control data is and the corresponding interval value in described angle of inclination.
4. the method for control music rhythm according to claim 3, it is characterized in that, in step S3, according to described interval value, seek its corresponding music sample rate, and export described control signal to change the music rhythm of described broadcast according to searching out music sample rate.
5. the method for control music rhythm according to claim 1, it is characterized in that, described method also comprises step S4: described control signal is exported to a display device, to present by the music rhythm and the angle of inclination of the balance pattern in this display device with described broadcast.
6. control the method for music rhythm according to claim 1 or 5, it is characterized in that, described method also comprises step:
S5: the frequency spectrum to the music of described broadcast is sampled at regular intervals, and the frequency spectrum that uses Fourier pair to sample carries out spectrum analysis, the sampled data after obtaining to analyze;
S6: the data of being sampled are carried out normalized, and the data after will handling are input to the frequency spectrum that shows the music of described broadcast in the display device by described display device, and wherein said display device also is included on four different directions and shows the data strip that frequency spectrum data changes in three-dimensional mode.
7. the method for control music rhythm according to claim 6 is characterized in that, described method also comprises step:
S7: described control signal is exported to described display device, change the color of the data strip of described display device according to this control signal.
8. device of controlling music rhythm, this device is applicable to portable terminal, it is characterized in that, described device comprises:
Detection module is used to detect the angle of inclination of portable terminal;
Output module is used for the control data at the variation at the described angle of inclination output music rhythm corresponding with described angle of inclination during greater than certain angle;
Control module is used for exporting a control signal to change the broadcast rhythm of music according to described control data.
9. the device of control music rhythm according to claim 8 is characterized in that, described device also comprises:
Spectrum analysis module is used for the frequency spectrum of the current music rhythm after changing is sampled at regular intervals, and the frequency spectrum that uses Fourier pair to sample carries out spectrum analysis, the sampled data after obtaining to analyze;
Processing module, the data after being used for the data of being sampled are carried out normalized and export this processing;
Display device is included on four different directions in three-dimensional mode and shows the data strip that frequency spectrum data changes, be used to receive after the described processing data and according to the frequency spectrum of this data presentation music rhythm.
10. a portable terminal is characterized in that, is provided with the device of claim 8 or 9 described control music rhythms.
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