長長影子兄, 10分同意你的見解!

用 digital room correction 係雙面刃，只用全動 corr. 就睇你好唔好彩。 我自己覺得最好以 room acoustics 處理為優先，digital room correction 為輔，如果冇足夠嘅 room acoustics 處理第一、二反點嘅情況吓用直接用 digital room correction 比較容易出 trouble。 如果能夠正確運用 dsp 嚟修正埋分音器及喇叭嘅 phase shift 對系統音效全面提升係非常明顯，但技術門檻相對比較高，需要有支可靠嘅量測 microphone 同埋需要預先量測分音器及每隻喇叭嘅 response 及 phase shift。

其實電分本身不貴，一般發燒友都有些剩餘後級。試吓便知自己能否接受其麻煩。

我自己多調校時容易迷失。身邊有可比較的耳筒便可保持清醒。

又要簡單又要頻率完美銜接,房間一樣！這個課題麻.....

There is nothing special about room correction.

What it really does is to equalize the system to smooth response for that room. This is a combination of how to cut the frequency into different bands and how to adjust the gain and time alignment and how to eq the system to have a linear response when running a test tone.

Yet, the more work a digital device does, the worse sounding it will be.

Thus, best is to know each driver's character and find suitable amp to go with. Pick wisely and then can make the DSP/Crossover do the least amount of work to get better sound.

最後修改時間: 2021-10-15 17:11:38

RC 我想話係Room Correction refer to haha師兄問題….

Room correction?

請問 RC 係?

係咪指修改分音器內嘅 resistor/capacitor 數值改變分頻點或gain?

最後修改時間: 2021-10-15 16:33:59

我又係唔識….. 但一般RC 都係用reference test tones 做set up。冇理由因為音樂多啲低音高音就轉來轉去？

係Hifi show 聽過demo。個哥哥同我講多返人流入demo酒店房，佢準備reset個RC settings，問我聽唔聽到分別。一輪大龍鳳之後，我話冇分別，啲聲一樣咁正！

RC係好掂。

#244 係記得,店長提過！ 不過無咁方便！
#245 明白...！
#247 長長影子兄這個好專業！

最後修改時間: 2021-10-15 15:34:20

宜家嘅 DSP 大多數功能都可以做到 real time tuning，改變參數馬上就有反應，但有啲複雜啲嘅運算例如產生 FIR filter 嘅功能連算需時就未必得，但都可以動態切換 preset，駁電腦做 tuning 之後 save presets 嚟用就會方便好多。

a question from dummy

does those DSP offer both real time correction and pre set only ( done one measurement, and settle with a setting..for the room )

if under a pre set mode, can all parameters could be extracted ?

or pre set mode does not make sense and real time is always better....as it corrects for each piece of music etc?

haha

最後修改時間: 2021-10-15 13:22:33

看圖應該明白

如果沒有分頻點調較依部機又可以點樣用呢？電子分音無得調分頻點又點可以叫電子分音呢！是否取巧呢？
==============================================
我意思是他們分頻器不可以自行調教是固定分頻點, 但可跟你要求設定好才寄給你. 因為電路是用電容電阻值計算, 是直焊在電路板上.

其中一個設置:
https://www.minidsp.com/applications/digital-crossovers/subwoofer-integration-with-minidsp


長長影子兄建議唔錯, minidsp 已是發展了多年好成熟, 數碼分音功能齊全, 容易調教出效果. 我今年都入了會, 買了部SHD( streamer + 2.2 preamp + Room correction), 還有minidsp 是香港原創公司支持吓.



最後修改時間: 2021-10-15 13:04:18

#241 長長影子兄！ 這個有甚麼用途？
#239 BenYC兄！太客氣！ 都明明地！頻率越細分越好但衍生出來很多問題需要解決,接合,延遲,相位各樣博大精深呀！

#239

I am no expert. Just sharing.

I think adding a bass unit will help out. Usually, lowering workload of drivers will get better results as the same cone need not reproduce a wide range of frequency. However, each crossover point is a problem by itself. Thus, best is 3 or 4 ways if to go active.

#237

Actually nowadays many digital crossover has all these functions. They are called Loudspeaker Management System nowadays.

DBX, Ashley, Behringer, all these pro company has similar items. They are for pro use and are very affordable. Most of them are in $thousands range brand new.

有個兩路天宝同軸單元（本身分音器是簡單的一電容一電感）想為它加個低音,諗住用電分推低幫佢分擔中低以下頻率！（暫有一部pa用途兩路電子分音）
因為聽吓小品就可以一大堆頭就亂曬籠！
請問三位前輩這樣可行嗎？



最後修改時間: 2021-10-15 12:13:59

剛開始試我會建議先用 minidsp, behringer... 嗰啲多啲 features 嘅 DSP xover 嚟試，有用 roon 等有 DSP 功能嘅 music server 嘅話甚至可以 group 埋幾個 players 每個輸出 apply 唔同 filters 去達到數碼分音嘅效果，即使 係 multi-ch. 後級都可以用，線材已經變得冇咁重要，要注意改變分音器節數設定後輸出相位極性有機會需要反轉，摩熟咗對喇叭調到咁上吓已經知道自己需要啲咩 features 先至搵更高階嘅 solution 或甚至 DIY 或 tailor made 嚟 match 自己對喇叭。 但我試過就真係唔建議用金仔電分，佢嘅表現比想像中流好多而且太貴。 不過玩電分點都係要花多啲時間先了解喇叭嘅特性，我覺得做基本量測免不了，剩係靠耳仔嚟 tune 只會事倍功半。

最後修改時間: 2021-10-15 12:05:56