| 摘要 |
Audio reverberation unit adds a reverberation sound to a real output sound of audio unit. The audio reverberation unit includes: a first means for radiating a test signal to an indoor room; a second means for collecting a reverberation sound of the test signal; a third means for determining attenuation degree of each frequency band of the collected reverberation sound, and determining a frequency characteristic of the indoor room; and a fourth means for adding a reverberation sound of audio signal according to the frequency characteristic of the indoor room.
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