Researchers have found that the tone, pitch, quality of voice, and rate of speaking convey emotions that can be accurately judged regardless of the content of the message.
研究发现，声调，音高，音质和说话的频率都传递着感情，而这能让人精准的判断话语的内容。
2
If you remove the polyphase option, you will increase or decrease the pitch of the output sample, depending on the output rate selected.
如果删除该选项，将根据选择的输出采样率增加或减少输出采样的基调。
3
Note the "polyphase" option on the end of the SoX command. This is important to preserve the pitch of the file while altering its sample rate.