正確幫velodyne set AUTO EQ, 謝~!!

siukit_siuhan · 發表於 2011-1-29 12:13

昨晚試過, 但我估不是set得太準確, 連個phase製都唔你好識...
但已給我很大的震撼, 買前其實sales哥哥已同我推介另一更高階model, 佢話8Q一定會令我上癒, 估我一定好快換, 開始有少少明白玩AV的兄弟們點解咁鍾情SUB仔... 真的好重要同好過癒... 哈哈~!!

Einstein · 發表於 2011-1-29 14:11

回復 10# siukit_siuhan

right, you got it....

Einstein · 發表於 2011-1-29 14:12

回復 10# siukit_siuhan

for test BOOLSELF SPEAKER就SET from 80,100Hz, 110....etc try which is good for you....

Einstein · 發表於 2011-1-29 14:20

昨晚試過, 但我估不是set得太準確, 連個phase製都唔你好識...
但已給我很大的震撼, 買前其實sales哥哥已同 ...
siukit_siuhan 發表於 2011-1-29 12:13

個phase...簡單2句, "相位" 係 0-360度 "Waves / phase of sound "聲音的度數...
與 "degree of subwoofer positson " subwoofer 面向角度度數並無直接關係...0-360度係好多ching的迷思
只知大多數都係 "0" <<< 我估係理由係好多人唔識就set "0"lor...否則
如有0 & 180度選...0只係1/2機會
如有0, 90, 180, 270度選...0只係1/4機會
如有0 -360度無段選...0只係1/360機會...就算面向那,都係1/360, 所以正確的0度冇理多過一半...小弟現玩面向皇帝位同backfire 都用正確相位180...

θ is sometimes referred to as a phase-shift, because it represents a "shift" from zero phase. But a change in θ is also referred to as a phase-shift.

For infinitely long sinusoids, a change in θ is the same as a shift in time, such as a time-delay. If is delayed (time-shifted) by of its cycle, it becomes:

但Phase 只關 Front, subwoofer, king seat 三樣事, test 開CD 2.1 , 用5.1會亂...

Phase 係0-360度...放邊到前/後都有齊0-360...唔會後有前冇..., 即以面向皇帝位, 一定會出現齊0-360度的機會, 只要距離改變, 例如加/減半個phase(180)的距離,其他數據, 前置不變, 面向皇帝位0度, 就一定會變面向皇帝位180度才正確,
故面向皇帝位是完整0度, 是有1/360的機會是對的

sub 的phase 與前置的phase 相同, 就會相加in-phase 即正確相位, 相反就相减即out-phase
基本上是沒有可能在沒有前置的資料下會預知正確的subw phase, 例如用反相spk又如何會正確?例如用不同的amp, spk距離又怎樣一樣subw phase...?

用2.1坐皇帝位test, 就是把 Front, subwoofer, king seat 三樣事的資料結合才得知phase issue