一个第三声的秘密

admin 提交于 周二, 04/14/2015 - 17:38

a secret of the third tone
Falling-rising.
Third + Third = Second + Third: nǐ hǎo should sound like níhǎo.
Third + Second = Half a Third Tone + Second.

句末时第3声会有变化:

The 3rd tone can be produced in three different ways:

first half of a "3rd tone",

second half of a "3rd tone",

full 3rd tone

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语音研究笔记

admin 提交于 周二, 04/14/2015 - 17:29
  • Spectrum:频谱
  • Pitch:音高
  • Intensity:音强
  • Formant:共振峰
  • Pauses:脉冲
  • Fundamental Frequency:基频(男:60-250Hz,女:75-450Hz)
  • 宽带语图(元音、辅音):男(0-5000Hz),女(0-5500Hz)
  • 窄带语图(声调、语调):男(0-1200Hz),女(0-2000Hz)

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10个Linux启动参数

admin 提交于 周二, 04/14/2015 - 16:50

The Linux kernel accepts boot time parameters as it starts to boot system. This is used to inform kernel about various hardware parameter. You need boot time parameters:

* Troubleshoot system
* Hardware parameters that the kernel would not able to determine on its own
* Force kernel to override the default hardware parameters in order to increase performance
* Password and other recovery operations

The kernel command line syntax

name=value1,value2,value3…

Where,

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怎样使用内存作为linux下的临时文件夹

admin 提交于 周五, 04/03/2015 - 13:40

从理论上来说,内存的读写速度是硬盘的几十倍,性能应该会有所提升
在一些访问量比较高的系统上,通过把一些频繁访问的文件,比如session 放入内存中,能够减少很多的iowait,大大提高服务器的性能

代码:
none /tmp tmpfs defaults 0 0
重启后生效

或者在/etc/rc.local中加入

代码:
mount tmpfs /tmp -t tmpfs -o size=128m
其中size=128m 表示/tmp最大能用128m

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