Method and apparatus for correcting phase distortion of audio instrument
专利汇可以提供Method and apparatus for correcting phase distortion of audio instrument专利检索，专利查询，专利分析的服务。并且PURPOSE: To satisfy 0 cross condition of musical tone by dividing 0° phase and phase positive and negative integer times 180° into frequency band and making it to respective references of phase distortion of an audio instrument and correcting the angle of phase deviation from the reference to make it proportional to the frequency.
CONSTITUTION: When -90° phase distortion is added to the whole frequency band of a 3-way speaker, 0° reference phase shifts to new 0°, -180° phase to an alternate long and short dash line, -360° phase to an alternate long and two- short dash line, and -540° phase to a chain line, respectively. The delay in the band from 40Hz to 107Hz is -240° from new 0°, and that in 100Hz is -240° from -0° phase. Therefore, if T denotes the frequency, the delay time is T× 240°/360°=6.6ms. In the band from 107Hz to 300Hz, the delay is -70° from -180°, and the delay time is 1.94ms. By inserting a delay circuit of 1.94-0.27= 1.67ms in the band, the band satisfies 0 cross condition of musical tone ranging from 100Hz to 2500Hz.
COPYRIGHT: (C)1982,JPO&Japio，下面是Method and apparatus for correcting phase distortion of audio instrument专利的具体信息内容。
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