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3 年
ALSA(高级Linux声音架构)浅析
声音在自然界以声波的形式存在,是一系列连续变化的模拟信号,声音的三个要素是音调、音强和音色。声波有三个重要参数:频率 ω0、幅度A n 和相位ψn ,这也就决定了音频信号的特征。 根据声波的特征,可把音频信息分类为规则音频和不规则声音。其中规则 ...
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