Do you really distinguish between AV audio and HIFI audio?

                Do you really distinguish between AV audio and HIFI audio?

In the field of civilian audio, HIFI and AV are the two most familiar abbreviations. What is HIFI, there is no need for Xiaoling to explain further, and many Xiaobai may not understand what AV is, in fact, it is a home theater! But what is the difference between home theater speakers and HIFI speakers?

1. First of all, it is necessary to clarify what is a home theater system

In layman's terms, the home theater referred to in daily life is a general term for home audio-visual systems, which includes televisions or projectors for video, DVD players or high-definition players for audio sources, and speakers and power amplifiers for audio.

Today's home theaters, in most cases, refer to audio systems composed of AV power amplifiers and multi-channel speakers. With a home theater, you can enjoy the impactful wide field of vision and powerful sound effects (immersive surround) just like a movie theater at home.

The power amplifier in the home theater system has at least 5 channels, which is responsible for driving the 5 speakers in the home theater to restore the sound in the movie. This sound is usually the sound in Hollywood blockbusters: crashes, explosions, volcanic eruptions, whatever. Home theater requires AV power amplifiers to have sufficient power reserve, quick response, and strong speaker capacity. All in all, AV audio should have a powerful shock, although the earth-shaking sound it makes may not be real.

2. What is HI-FI system

HIFI is equal to high-fidelity. The HIFI system in the mouth of enthusiasts generally refers to audio equipment with high technical indicators.

3. What is the difference between home theater audio and HI-FI audio?

Distinguish by definition:

HIFI audio requires audio equipment to process and amplify the various indicators of the sound signal without distortion during the replay process, so as to restore the original appearance of the sound source, emphasizing the original flavor, and is specially used for enjoying music. In terms of price, there is a big gap between the price of home theater audio and the price of HI-FI audio. So the price is an important difference between home theater speakers and HI-FI speakers.

In terms of the number and quality requirements of speakers, this is a point that novice users can easily distinguish: the requirements for home theater speakers and HI-FI speakers are completely different.

Home theater speakers are generally composed of several speakers. These speakers include satellite surround boxes and subwoofer boxes. Compared with HI-FI speakers, these speakers pay more attention to the requirements of speaker power, frequency response, and distortion effects. In addition to these, home theater speakers pay more attention to the synergistic effect between multiple speakers, while HI-FI speakers are completely opposite to home theater speakers. HI-FI speakers are composed of two speakers. Capability and sound effects, without sound rendering capabilities, can ensure the real playback of relatively high sound.

Home theater speakers have higher requirements on frequency response range, dynamic range and transient response than high-fidelity speakers. Because the AV speaker must take into account the three aspects of human voice, musical sound and effect sound, it is required that the frequency response of the AV speaker should be wide, the power should be large, and the middle and low frequencies should have better density. The requirements for high-fidelity speakers are lower.

Home theater speakers do not have as high fidelity requirements as HI-FI speakers. Because pure music appreciation pays more attention to the realistic and sweet sound quality than watching movies. In the three aspects of vocal dialogue, music and effect sound, music has the highest requirement for fidelity, while people's attention is mainly focused on visual and verbal dialogue when watching movies, and they don't care much about the details of music. Therefore, the AV speaker does not overemphasize the details of sound performance, but pays attention to the effect sound that expresses great dynamics to enhance the atmosphere, and cooperate with the sound field positioning of the picture to create a breathtaking scene.

Home theater speakers have higher requirements for large dynamic reproduction of subwoofer than high-fidelity speakers, because the frequency of roaring sounds such as explosions, thunder, and impact in nature is usually lower than 60Hz (the lowest can be below 20Hz) and it carries huge Energy (the maximum sound pressure level can exceed 110dB), if you use a high-fidelity speaker to restore them, it will appear flat and lack of shock. In order to solve this problem, the AV audio system uses a subwoofer, so that the volume of the main speaker can be smaller, which is conducive to improving the system's sound image positioning and transient response capabilities.