Talking about the equalizer

The equalizer (EQ, Equalizer, Hong Kong and Taiwan is called, and so on). The equalizer is in the 19th century invention, used to correct sound; a start main use in Hollywood Film Studio. Why do you want to correct sound? because all of the sound playback is through speakers or headphones to eventually transformed into sound, however, these devices cannot perfect embodiment of sounds, with professional noun, "speaker frequency response curve is flat." It simply is the speaker playback sound, some band signal will decay — that's up to the expected volume or intensity; there's a band signal gain — is more than the expected strength. Very few speakers can do more flat frequency response curve, so we need the equalizer to correction. Before the correction should know in advance the frequency response curve of sound, but most people do not have conditions of instruments to test the speaker, the majority still rely on the ears. There are two points to note: first, the frequency response curve is flat, and not to put him to adjust to the full level of a line, which is adjusted to the proper range. Second, the frequency response curve is flat and do not necessarily represent those of the natural sound quality is not good, some of the personalized speaker frequency response curve is not straight, Equalizer amended, will lose the existing style, please think twice. According to the processing of the signal (or playback process), the equalizer has two types: digital equalizer and analog equalizer. Digital equalizer is a digital signal, the signal is digital and analog modulation gain before the conversion. Analog Equalizer is analog, digital and analog signal is converted to adjust the gain. According to the different implementations can be divided into hardware equalizer and software equalizer. Generally use a computer to listen to the music of basic used software equalizer, however have a sound card with hardware load balancers such as Crystal CS46XX chip sound card. Most commonly used is software diagram digital equalizer and software parameters digital equalizer.