最近小弟想做錄音,因為房間規劃問題, 若guitar effect用上70多呎mono線接駁sound card interface會不會出現嚴重訊號減弱? 若果guitar effect一端輸出是canon頭,另一端sound card interface輸入是mono頭,這樣接駁會不會好一些?? 麻煩各位大大回答 thank you very much~~
兄台的意思是不是綜合效果器出的信號是line level,所以不怕長距離導線的問題? 若我使用結它effect如pod pro上的mono output經過70呎的導線接到sound card interface input，會不會聲音變糟? 其實mono導線(單芯一網),可以接受範圍最長可以有多長? thank you~~
另外我所指mono頭是解作recording interface上的mono輸入 我利用像pod pro等含XLR輸出的效果器, 若我利用一條一端是XLR頭,一端是mono頭的導線連接 recording interface上的mono輸入..... 這樣作會不會比單是利用兩端都是mono的線材連接好些? 謝謝~ 感激不盡
我和你一样有POD PRO，跑到后面看了一下你的意思我明白了。 线尽量用长度短的，太长可能会有延迟和干扰。 POD PRO recording out 有两种 （1）XLR是一种平衡接口+4db （2）-10db 尽量用同一种接口，不要作线转接
影響訊號傳輸品質的主要是著眼於傳輸方法,,,跟operating level 關係較不直接...雖然阻抗不匹配,...impedence mismatched 也會造成音色接駁後的失真.. audio長距離傳輸最好還是用balanced 的方式...... 單芯一網應為unbalanced 的mono cable 雙芯一網的TRS stereo jack cable 還是unbalanced.... XLR cannon則是balanced 的mono cable... check here... http://www.ians-net.co.uk/articles/balanced_lines.php
bum 同學, 你最好是用70 尺的xlr cable 接POD pro 的xlr banlanced out ,,,, 另一端xlr 進 DI box,,,,把 banlanced source 用DI反轉成unbalanced into soundcard..... balanced or unbalanced 的差異不只是cable 兩端的接頭,,,, XLR 的 地,正.負 3pin,,網接地,另外兩芯一接正,一接負..... To connect a balanced output to an unbalanced input, or vice-versa..... The 100% correct and official way to do this is via a "transformer" or an "electronic converter" made from an op-amp..... There are also some reasonably-priced ICs especially designed for the task........... To connect a balanced output to an unbalanced input,.... there are a couple of choices.,,,,In both cases, the "Live" side of the output is connected to the signal input....The other connection depends on whether the output is transformer isolated (in which case the "Return" side is connected to the input ground) or electronically balanced using ICs (in which case the Ground pin of the output may be connected to the input ground instead).,,,,, The latter will result in a 6dB loss of amplitude, and perhaps reduced signal-to-noise ratio. If you try to get a signal between a transformer balanced output and ground you will get nothing - the signal is not referenced to ground at all.... On the other hand, if you connect the "Return" output of an electronically-balanced output to the input ground, you will be shorting that output to ground,....and the chip may not like it. From an audio fidelity point-of-view, it is obviously better to use the "Return" output rather than the "Ground", so how do you know when it is safe to do so? ....If you're being professional, you could open-up the equipment, find-out which IC is being used and then go and read the datasheet.... The more practical solution is to "suck it and see" - try it out and see if the audio sounds distorted or looks distorted on an oscilloscope - you're most unlikely to cause permanent damage to the chip as it will have built-in short-circuit protection. If you regularly need to connect balanced outputs to unbalanced inputs, you may like to make up a lead with a switch in circuit to select whether the return or ground connection on the balanced output is connected to ground on the unbalanced input. Good luck !!
我的情況如下~~ 房1有一台Pod pro和bass preamp(兩者皆有XLR output) 另有電鼓一台(left, right) (Line out 輸出) 以上器材輸出到房2的電腦作多軌錄音(即在電腦同時錄四軌) 房1拉線到房2需要70多呎~ 若我用DIbox將電鼓的left and right channel(unbalance signal) 轉造balance signal駁到房2,電鼓方面應該不太害怕因線太長而來的雜訊吧!? 若果有台電腦Audio Interface含有四個XLR balance input 就沒有問題了!! 但我找不到這類電腦Audio Interface,請問有沒有suggestion?? 另外若我將房2的電腦audio output再用DIbox輸往房1的Power mixer作monitor,這樣行不行麼?? 我一次過問這麼多的問題,不好意思啊!! Thanks a lot~~!!
你把電腦弄到room 1啥都OK啦.. XLR inputs 的audio I/O 市面上很多,,你找找吧.. 其實怎樣弄都行,,,但效果不一定會好,,, 你的器材setting 本來就蠻簡單的,,,, 真要接來接去接這麼長,,大概怎麼接都不會好太多啦!! 不如想想wireless transmitting好了,,,