MDLP 發表於 2016-5-24 21:54 static/image/common/back.gif
呢種良性討論比其他PM問價錢更有意思
yes，睇你啲post學到唔小嘢，呢兩日跟你啲post嘅理論去set隻十仔，須然未喺set到100分(功力所限)但已經唔同晒，隻新十仔好打心口，張梳化好似按摩椅咁，好high！
MDLP 發表於 2016-5-24 21:31 static/image/common/back.gif
mono pink noise 不是 single freq sine wave
包含有唔同freq就有唔同wave length
應該就唔會搵到 in/out ...
一個mono signal由兩個speakers打出當然會有
in out phase
hohodog900 發表於 2016-5-24 22:14 static/image/common/back.gif
yes，睇你啲post學到唔小嘢，呢兩日跟你啲post嘅理論去set隻十仔，須然未喺set到100分(功力所限)但已經唔 ...
其實呢個post唔知點解今朝無人覆都蒲返上嚟
挑起條根其實都係由你個sub仔post接住嚟講
MDLP 發表於 2016-5-24 22:13 static/image/common/back.gif
你又啱
但結果都係耳聽為實
問題係背後個理論喺邊
只用pink noise/mp3 file, 永遠tune唔好多聲道........想知點解, 就試吓用dolby surround同pink noise/mp3 file音壓分別,完全兩回事.....
bbsai 發表於 2016-5-24 22:20 static/image/common/back.gif
只用pink noise/mp3 file, 永遠tune唔好多聲道........想知點解, 就試吓用dolby surround同pink noise/mp ...
呢樣我同意你
本帖最後由 MDLP 於 2016-5-24 22:26 編輯
chhanthony 發表於 2016-5-24 22:17 static/image/common/back.gif
一個mono signal由兩個speakers打出當然會有
in out phase
但個 in 或 out phase 唔會係整個pink noise 頻普
就算單頻 sine wave 喺正中間位
一樣有機會out of phase唔一定 in phase
本帖最後由 chhanthony 於 2016-5-24 22:54 編輯
MDLP 發表於 2016-5-24 22:25 static/image/common/back.gif
但個 in 或 out phase 唔會係整個pink noise 頻普
就算單頻 sine wave 喺正中間位
一樣有機會out of phas ...
Sigh........this is one of the solutions not the best and not the only.....not everyone using pioneer...sir.....not zero and one game..
On the other hand, how you can confirm "full band phase plus" can reprovide all speakers in all freq in phase?
All you can is trust the pioneer software or use a 3rd party software to verify it....
本帖最後由 MDLP 於 2016-5-24 23:32 編輯
chhanthony 發表於 2016-5-24 22:52 static/image/common/back.gif
Sigh........this is one of the solutions not the best and not the only.....not everyone using pion ...
其實同Pioneer同扯唔上關糸
祇是正常物理現象討論
而且無一個牌子可以改寫物理定率
聲波係以Longitudinal Waves在空氣中擴散運行
固定A點同B點距離相同頻率在正中間音波會合
型成constructive wave (in-phase)
或 DESTRUCTIVE WAVES (out of phase)
但個中間點個事實距離
唔會因為相位in或out而漂移
由3:09開始睇兩個相同wave正面相衝
正正解釋到中間位都可以in phase同out phase
x2Iwrhynq9o
本帖最後由 chhanthony 於 2016-5-25 01:05 編輯
MDLP 發表於 2016-5-24 23:19 static/image/common/back.gif
其實同Pioneer同扯唔上關糸
祇是正常物理現象討論
而且無一個牌子可以改寫物理定率
我上面寫了係最大音壓了，
如果兩個speakers play 同一個mono signal喺最大音壓時不是最接近同相嘅我真係唔知係乜，
上面條片講兩個sound wave 反方向行，同我上面講嘅根本係兩樣嘢。
你轉嚟轉去我真係get 唔到你想表達啲乜。
不如你提個方法出嚟幫下唔係用pioneer嘅朋友點去fine tune distance啦。
chhanthony 發表於 2016-5-25 00:39 static/image/common/back.gif
我上面寫了係最大音壓了，
如果兩個speakers play 同一個mono signal喺最大音壓時不是最接近同相嘅我真係 ...
其實好簡單
當有兩隻喇叭面向面打對台時
L+SR/SBR
R+SL/SBL
就會出現如下情況
https://c2.staticflickr.com/8/7243/27222568405_e4407fabbd_b.jpg
https://c2.staticflickr.com/8/7389/27125619962_92559897d4_b.jpg
https://c2.staticflickr.com/8/7292/27125619862_daf2315327_b.jpg
https://c2.staticflickr.com/8/7279/27222568585_31b31db812_b.jpg
https://c2.staticflickr.com/8/7323/27125619702_af83a87188_b.jpg
https://c2.staticflickr.com/8/7666/27188408586_b7a12695d2_b.jpg
