| 摘要 |
The present invention relates to a sound wave communications apparatus which transmits and receives data by transmitting and receiving sound waves. According to an embodiment of the present invention, the sound wave communications apparatus may include: a hardware correction table which sets a correction frequency band with correction frequencies allocated for each correction value for correcting errors based on characteristics of hardware of a sound wave transmission unit and allocates a correction reference frequency to a correction value ′0′; the sound wave transmission unit which generates a data frequency, allocated to a data digit, into a level of a set basic decibel, generates separated reception filter frequencies for receiving data included in a sound wave, transmitted from the closest location, into the level of the basic decibel when the sound wave is received, and also generates the correction reference frequency for hardware transmission correction into the level of the basic decibel; and a sound wave reception unit which receives a sound wave signal transmitted from the sound wave transmission unit, extracts decibel values for each data frequency, aligns the decibel values, corrects the sound wave signal by shifting an alignment by an extracted correction value by using the hardware correction table, and restores data by extracting data frequencies, in the number of aligned elements allocated to a separated filter frequency with the highest decibel value, in descending order of the decibel values from a band of the separated reception filter frequencies. |
