Audio Signal Distortion

In any part of a system (amplifier, equalizer, cable, etc), there is an ideal, expected output signal waveform. Any false reproduction of audio is considered signal distortion.

The most common example of distortion occurs in analog equipment when the capabilities of the gear that receives of delivers the signal are exceeded. The amplitude of a signal must fall in a certain range to be accurately received by the device. The better quality the device, the more accurately it will handle the signal (less distortion).

The original signal is beyond the threshold, so the resulting signal is squared off.

If the amplitude of the sugnal is too low or to high for the device, it may be less inteleligible because of signal distrortion. The distorted sound is actually the odd harmonics of the signal being amplified and then added back into the signal.

Manufacturers generally specifify their product to be within a certain allowable tolerance of total harmonic distortion (THD). THD is generally given as a small percentage of the total signal, and measured at the maximum specifies output of the device.

Telephone conversations, not known for their audio quality, generally tolerate up to 10 percent distortion. In professional AV systems, a 1 pecent THD is noticeable to most.

It is up to the AV systems professional to assure that the installed system adheres to this tolerance by assuring the system is designed, set up and adjusted so that each item of equipment is getting and delifering the signal levels within the limits stated by the manufactures.

Sound System : Basic Device

Sound system for the live performace and the recorder had two main components that is: microphone and mixer. Microphone was used to convert voice signal to electric signal. Mixer was used to combine all these signals.
The signal from mixer output is connected with amplifier.
Amplifier will strengthen this signal in being given to speaker.
Speaker will change this signal into the acoustic wave as the sound.

Afterwards in the system of the voice order also was gotten the processor that generally is connected around mixer and amplifier.
The processor was used to increase the quality of the signal audio.
The most general processor was used that is equaliser, effect, and the compressor.
Equaliser basically is the control collection of the tone that could raise or reduce the frequency of the signal audio specifically.
Effect is used to give special effect of the sound, like reverb (the voice reverberated) and delay (gave the postponement of the signal).
The signal that was too strong until passing the limit that was given to the compressor will be reduce.
In this case, the compressor could help prevented damage in speaker.

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Sound the system was the vital part in one showed modern music, although in this case often we ignored him. Possibly as a Manager the performance must look for a person professional that was responsible for arranging this. But in fact, a person professional that was capable in handled sound system not always was available. In the long run this responsibility was shifted to the person that not specially could handle sound system like for example the musician. You think that this person could handle sound system was the same his matter when you installed some equipment sound system hi-fi in the house and you got the clear vote. You were kept buying several microphones and speaker furthermore showed could be begun. And you too hoped that showed this definitely could be recorded well.

Unfortunately in composing a set sound system in one showed not was as simple as that. Indeed in this case not was difficult like apparently, but when you came to a shop audio, there were many choices that could make you confused.

When you were asked the kind microphone what was needed by you, of Cardioid or Dynamic? Speaker the kind what was wanted by you, of Low Impedance or High Impedance? You really had difficulty answering him, because you did not understand would that.

With few basic guides, you could study what was needed by you, till finally you knew how sound system that was bought by you could produce the good voice good in showed and when in the process of the recording.

That must be paid attention to as the foundation in the process of the recording adalahketika feedback happened (feedback), also the characteristics of the acoustics in this recorder space.

Many of various microphone kinds and mixer that possibly to be chosen in the process of the recording, was the same his matter with the strengthening system of the voice to live show.

If the voice canned be heard good by you, that already a good step.
And became capital of the foundation to become better and finally produced the voice that excellent.

A little knowledge and some logic will help you to choose the system was good with the budget that be enough and avoided disappointment.

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SOUND SYSTEM: Church Sound System Configurations (1)

Church Sound Reinforcement systems include the following item:
1. Microphones for preacher and choir
2. Mixer / Amplifier or separate mixer, equalizer, and amplifier
3. Speakers
4. Cables to interconnect the components

for additional items for church sound reinforcement systems such as:
1. Tape deck
2. CD player
3. Monitor speakers or Headphones
4. Fill-in speakers for under balcony seats
5. Rear Fill-in speakers for long rooms

Configuration of Church Sound System:

The basic sound system consist of a few microphones, a mixer amplifier and a couple of speakers. Although the speakers with two driver are designed primarily for speech and recorded music. This speakers can handle limited live music, but they lack the bass response to produce a rich natural sound. This speakers are made for a small room because they can't project the sound or control it very well.

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