Saturday, April 23, 2016

爵士鼓速成班筆記

Drum课程
第一课(张凯)
鼓谱(见参考书)
单跳: R L R L  双跳 RRLL
两鼓槌内八
双手垂直向下 用手腕力量
                   第二关节(千万不要滑到第一关节)
                   前两指控制住鼓槌
                                                 剩下三指放松
                   后面出来一点(一个关节长)
大拇指向前
提手腕,胳膊也向上抬,鼓槌最高抬到竖直,最高点过头部
向下甩击(用手腕),击后控制住鼓槌,定在鼓面上方3cm
上半身稳定不动
(鼓槌下落后,微提手腕支点,避免敲击到鼓边)

第二课 (谢总)
地鼓 通鼓 地通鼓 军鼓 踩镲 crash
Hi-hat: 左脚平踩,踩实,控制住音色,右手打击
        放在左边,打击时像敲鼓一样的动作
军鼓: 击打在鼓面中心,左手击打
Crash: 右手击打
地鼓: 右脚脚尖踩,不能太前(黑色区域)
        注意: 用眼看鼓槌,脚踩的运动与槌不完全一致。
               在抬腿没抬到踏板最高点的时候就开始向下加速, 这样才能出音色
               脚脖子不懂
鼓槌握的时候注意:
1.    垂直下落
2.    手腕放松,甩击

第三课
一定要用力
手腕不能内折


左手注意垂直上下
右肩不要高抬,上身垂直放松
地鼓踩实,不敲时为踩紧状态

第四课:
贝斯用来包住地鼓
贝斯与地鼓的配合是乐队的核心
不要伸一下敲一下,手腕一直要到位准备
左右手不要怕相撞,右手敲完后抬起

第五课:
手腕抬高,用腕敲击
胳膊放松放低
记住手腕上下敲击
可以买一本初级鼓谱
扒鼓谱不容易





Thursday, April 21, 2016

error: src refspec master does not match any. error: failed to push some refs to 'https://github.com/XXXX.git'

error: src refspec master does not match any.

error: failed to push some refs to 'https://github.com/XXX.git'


That is the error message I got when trying to git push a newly created folder.

Then I realized that the repository got no file tracked although I git init'ed the folder.
After git add'ing the files in the folder, I git push'ed again and it worked.

Saturday, April 16, 2016

How to use a jump-starter when your car auto engine is not able to ignite

People usually use jumper cable or jump starter, only the latter of which worked for our car, whose battery is already very bad.

To use the jump starter:
1. park you car, open the front cover
2. put the cables onto the battery, making sure you match the red and blue electrodes
3. after charging for a while, you ignite your car.

More details:
https://www.pepboys.com/parts/batteries/diy_jumpstarting/

To use cables, you need another car to connect the red-red and black-black of the two batteries. The idea is to let the two batteries redistribute the energy they stored. The good battery will always charge the low one to move forward to equilibrium of the two.


Saturday, April 9, 2016