Research on Processing Method of Noise Reduction for Multi-channel Audio Data of Cultural Resources

The preservation of the cultural resources requires high definition audio data, however, it is hard to eliminate the current noise completely. For this reason, we hope there is less noise in the captured WAV files. To improve the audio quality, this paper mainly studies the method of decreasing current noise of multi-channel audio data for cultural resources to improve the clarity of the audio data. According to the sound characteristics of cultural resources, we chose reasonable band-pass filter to preprocess audio signal. After the correlation analysis between cultural resources audio data and referred current noise data, we can use the methods of adaptive cancellation or reduction of spectrum to reduce the effect of current noise to the multi-channel WAV data. Our method can greatly increase the definition of audio and provide technical basis for the preservation of audio information for the Intangible cultural heritage simultaneously, which also has significant application value and foreground.