Method for generating a slide show with audio analysis
View Patent ↗With the method for generating a slide show in harmony with music, the user is able to compose an attractive and interesting slide show by a convenient and simple method. The steps of the method comprises: analyzing audio data to obtain reference points, wherein the reference points include at least one beat point of said audio data; obtaining image effects for images; selecting at least one first level point and at least one second level point from the reference points; and composing a slide show of the images with the image effects in association with the audio data, wherein the image effects are controlled according to the first level point and the displaying of the images is controlled according to the second level point.
1. A method for generating a slide show with audio analysis, comprising:
analyzing audio data to obtain reference points, wherein said reference points include a beat point of said audio data;
obtaining at least one image effect for at least one image;
selecting at least one first level point from said beat points;
selecting at least one second level point from said first level point; and
composing a slide show of said image with said image effect in association with said audio data, wherein said image effect is controlled according to said first level point and the displaying of said image is controlled according to said second level point.
2. The method as set forth in claim 1 , wherein the analysis of said audio data comprises:
transferring wave features of a time domain to energy features of a frequency domain and obtaining energy values;
dividing said energy values into plural sub-bands;
calculating a chord change probability of each period according to a dominant frequency of adjacent period of said period, wherein the length of said period is predetermined; and
obtaining said beat point according to said chord change probability.
3. The method as set forth in claim 2 , wherein said dominant frequency is determined according to energy values of every said sub-band.
4. The method as set forth in claim 1 , wherein said second level point is selected from said first kvel point according to a tempo value, and said tempo value is acquired by performing a background music analysis of said audio data.
5. The method as set forth in claim 1 , wherein said first level point is selected according to a tempo value, and said tempo value is acquired by performing a background music analysis of said audio data.
6. The method as set forth in claim 1 , wherein said image effect include a transition effect, a panning effect, a zooming effect, or a blurred effect.
7. The method as set forth in claim 1 , wherein said reference points further include a start point and an end point of said audio data.
8. The method as set forth in claim 1 , wherein said image effect is predetermined in a template or obtained by an image analysis.
9. A computer-readable storage medium having executable instructions for generating a slide show with audio analysis by performing the following, comprising:
analyzing audio data to obtain reference points, wherein said reference points include a beat point of said audio data;
obtaining at least one image effect for at least one image;
selecting at least one first level point from said beat points;
selecting at least one second level point from said first level point; and
composing a slide show of said image with said image effect in association with said audio data, wherein said image effect is controlled according to said first level point and the displaying of said images is controlled according to said second level point.
10. The machine-readable storage medium as set forth in claim 9 , wherein the analysis of said audio data comprises:
transferring wave features of a time domain to energy features of a frequency domain and obtaining energy values;
dividing said energy values into plural sub-bands;
calculating a chord change probability of each period according to a dominant frequency of adjacent period of said period, wherein the length of said period is predetermined; and
obtaining said beat point according to said chord change probability.
11. The machine-readable storage medium as set forth in claim 10 , wherein said dominant frequency is determined according to energy values of every said sub-band.
12. The machine-readable storage medium as set forth in claim 9 , wherein said second level point is selected from said first level point according to a tempo value, and said tempo value is acquired by performing a background music analysis of said audio data.
13. The machine-readable storage medium as set forth in claim 9 , wherein said first level point is selected according to a tempo value, and said tempo value is acquired by performing a background music analysis of said audio data.
14. The machine-readable storage medium as set forth in claim 9 , wherein said image effect is predetermined in a template or obtained by an image analysis.
15. The machine-readable storage medium as set forth in claim 9 , wherein said image effect include a transition effect, a panning effect, a zooming effect, or a blurred effect.
16. The machine-readable storage medium as set forth in claim 9 , wherein said reference points further include a start point and an end point of said audio data.
17. The machine-readable storage medium as set forth in claim 9 , wherein said storage medium includes a CD, a DVD, a Blu-ray disc, a floppy disc, a hard disc, or memory.