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The hit interval insertion point detection means which detect the audio information transmission unit
The hit interval insertion point detection means which detect the audio information transmission unit
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机译:命中间隔插入点检测装置,检测音频信息发送单元
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摘要
Additional information is multiplexed on to an analog audio signal without deteriorating the S/N ratio of the audio signal. To accomplish this, a modulator (3) carries out spectrum diffusion of a data input (Di) supplied as additional information at a data input terminal (2). A gap insert position detection block (7) detects a gap insert position in an audio signal (Si) supplied at a signal input terminal (6). A gap inserter (8) inserts the gap at the insert position detected by the gap insert position detection block (7). A modulation signal adder (9), using as a control signal the gap inserted by the gap inserter (8), multiplexes the spectrum-diffused data on the audio signal (Si). IMAGE
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