Audio data processing device and method
View Patent ↗An audio data processing device and method includes selecting one multiple-S-curves, and running an interpolation arithmetic upon original points according to the selected multiple-S-curve. Selecting one multiple-S-curve includes selecting one of a plurality of S-curves corresponding to a current utilization ratio of a processor, obtaining audio data having a fixed length including sampling frequencies and the original points of the obtained audio data, and selecting the one multiple-S-curves corresponding to the selected S-curve and the obtained sampling frequencies.
1. An audio data processing device, comprising:
a processor;
an S-curve storage device to store a plurality of S-curves corresponding to different utilization ratios of the processor;
a multiple-S-curve storage device to store a plurality of multiple-S-curves, a codes storage device, and one or more programs stored in the codes storage device, and executed by the processor, wherein the one or more programs comprise:
an S-curve selecting module to select one of the plurality of S-curves corresponding to a current utilization ratio of the processor from the S-curve storage device;
an obtaining module to obtain audio data having a fixed length, wherein the obtained audio data comprise sampling frequencies and original points of the obtained audio data;
a multiple-S-curve selecting module to select one of the plurality of multiple-S-curves from the multiple-S-curve storage device corresponding to the selected S-curve and the sampling frequencies;
an interpolation module to run an interpolation arithmetic upon the original points according to the selected multiple-S-curve; and
an output module to output the interpolated audio data that interpolated by the interpolation module.
2. The audio data processing device as claimed in claim 1 , wherein each S-curve is formed by a number of points arranged on frequencies movement of the obtained audio data.
3. The audio data processing device as claimed in claim 2 , wherein number of the points of each S-curve is corresponding to the utilization ratio of the processor.
4. The audio data processing device as claimed in claim 3 , wherein the higher the utilization ratio of the processor is, the lower the number of the points of the corresponding S-curve is.
5. The audio data processing device as claimed in claim 1 , further comprising a multiple-S-curve generating module to generate a new multiple-S-curve corresponding to the selected S-curve and the sampling frequencies when the multiple-S-curve selecting module selects no corresponding multiple-S-curve in the multiple-S-curve storage device.
6. An audio data processing method, applied in an audio data processing device with a processor and a storage system, the audio data processing method comprising:
storing a plurality of S-curves in the storage system, wherein the S-curves correspond to different utilization ratios of the processor;
storing a plurality of multiple-S-curve in the storage system;
obtaining audio data having a fixed length, wherein the obtained audio data comprises sampling frequencies and original points of the obtained audio data;
determining a current utilization ratio of the processor, and selecting one of the plurality of S-curves corresponding to the current utilization ratio of the processor;
selecting one of the plurality of multiple-S-curves corresponding to the selected S-curve and the sampling frequencies;
running an interpolation arithmetic upon the original points as the selected multiple-S-curve; and
outputting the interpolated audio data.
7. The audio data processing method as claimed in claim 6 , wherein the step of selecting one of the plurality of multiple-S-curve comprises:
determining whether one of the plurality of multiple-S-curves is corresponding to the selected S-curve and the sampling frequencies;
if one of the plurality of multiple-S-curves is corresponding, selecting the corresponding multiple-S-curve; and
if no one of the plurality of multiple-S-curves is corresponding, generating a new multiple-S-curve corresponding to the selected S-curve and the sampling frequencies, and storing the new multiple-S-curve.
8. The audio data processing method as claimed in claim 7 , wherein each S-curve is formed by a number of points arranged on frequencies movement of the obtained audio data.
9. The audio data processing method as claimed in claim 8 , wherein number of the points of each S-curve is corresponding to utilization ratio of the processor.
10. The audio data processing method as claimed in claim 9 , wherein the higher the utilization ratio of the processor is, the lower the number of the points of the corresponding S-curve is.