Sound effects: don't overlook the delay and reverb

Reverb is a closed space for a large number of ECHO, even if the sound source is stopped, it will still be able to make sound continuously for a period of time. In any enclosed space, reverberation can naturally occurring. Artificial reverb unit often to give music increase the sense of "the scene". Cheapest reverberator is spring reverb, it makes part of the signal through the long spring, these signals will take longer to these Springs, so the signal was delayed, and the other signals is directly output. Reverberator basically has a depth (depth) knob to regulate is delayed signal and the signal on the volume. In short, the surface sound easy to reflect a sound place natural reverberation is great; the voice is soft and dense material (such as blankets, bulian, wadding, etc.). Better reverberation device also has a control knob delay time. For example, if you want to imitated from reflector distant parts of the natural reverberation, can put up some delay time. Acoustic echo is usually in the Echo Chamber. In an echo chamber, unique acoustic design can make sound and reflection. To increase the ECHO, the sound from speaker system into an echo chamber, then from the microphone to pick up. Tape surround echo is a point in the tape recorded signal, and then another drop out to delay the signal, the signal to be delayed from the original signal mixed to achieve the desired echo intensity. ECHO's duration by one can adjust the recording head and the distance between the playback head knobs to adjust. Tape surround echo now has very few people use it, instead of digitally simulated digitally and digital. Analog delay unit can produce echo, they are usually better than digital delay unit noise, but can make a high frequency and low prices. Digital delay is artificial reverberation of an "art", it can be made from 1 MS (1 MS = 1/1000 second) to 1 second or even a longer delay time. Most of the digital delay unit in addition to containing the echo with dual tone, and sing, erratic and equal. Dual tone can produce two simultaneous playing of musical instruments.