| 摘要 |
<P>PROBLEM TO BE SOLVED: To compose a sound voice reproduction device which is easy to listen for a listener not depending on a content of a source in a low price, and drastically reduce consumption power. <P>SOLUTION: The sound voice reproduction device has a formant frequency detection unit 4, a power ratio addition unit 5, and a speaker constitution determining unit 6. The formant frequency detection unit 4 extracts formant components from spectrum components of digital sound voice data CDAD (Compressed Digital Audio Data), and calculates a power ratio or an energy ratio of power or energy of the formant component of the spectrum component and power or energy excluding the formant component from the spectrum component. Next, the power ratio addition unit 5 accumulates and adds the power ratio or the energy ratio of the power or the energy of the formant component of the spectrum component and components excluding the formant component. By the way, the speaker constitution determining unit 6 determines speaker constitution according to the accumulated addition value of the power ratio or the energy ratio. <P>COPYRIGHT: (C)2008,JPO&INPIT |
