TV audio is one of the devices to improve the sound quality of TVs, and is increasingly understood and recognized by everyone. Users who have requirements for sound quality can be said to be the icing on the cake with the support of TV audio. If you don’t have special requirements for sound quality, you think that the TV comes with its own sound effects, and it’s not bad if you don’t need to configure the TV speaker. However, the acoustic system of a TV is generally mainly to ensure human voice, and its effective bandwidth is about 150Hz to 10kHz. For music signals with a wider frequency range and richer frequency range, the ability to restore the sound effects of TV is relatively poor, especially when watching some music programs or TV series with large scenes, the atmosphere and experience are not so good.
If you want to add a practical TV speaker, in addition to paying attention to brand and price factors, there is another thing you need to know, that is, whether you want to divide the audio or full-frequency audio. In fact, the term "dividing audio" and full-frequency audio" is for the speakers (speakers) in the audio system.
So, what is the difference between full-frequency audio and cross-frequency audio?
1. Dividing audio
dividing speakers, common ones include two-way audio and three-way audio. Through the built-in dividing device, audio signals from different frequency ranges are separated and then sent to the corresponding speakers. The advantage of cross-frequency audio is that each frequency band has an independent sound unit, each performs its own functions and gives full play to its own frequency band advantages.
1 and two-part audio
are mostly used in bookshelf audio. The crossover audio has an independent tweeter, and the mid and bass are mixed together. Because the tweeter and the bass unit are separated, this structural feature makes the high and low frequencies more extendable, and can be well presented from instrument solos to large-scale symphony .
2, three-way audio
, three-way audio
, has an additional midrange unit compared to two-way, so it also has better sound details. In order to achieve ideal sound quality, many manufacturers are working hard on frequency dividing. The selection of frequency division points should be grasped according to the frequency response characteristics of the speaker unit. If the setting is not correct, it will affect the allocation of sound power and cause the overall frequency response to be uneven. Without a scientific and reasonable frequency division scheme, even with the best speaker unit, it cannot be mobilized to work. Only through more detailed frequency division can the corresponding units restore the sounds of each frequency band, and the sound quality performance will be even better. Because there are more three-quarter frequency units, the frequency divider needs to be more complex and the cost is higher. Currently, the price of three-quarter frequency audio on the market starts from 1,000 yuan, and well-known brands even reach the level of 1,000 yuan, which can be said to have endless fever. Currently, there are many product forms of three-minute audio, including KTV audio, bookcase, floor-standing home theater audio , etc.
2. Full-frequency audio
As the name suggests, the full-frequency speaker only uses one full-frequency speaker to emit sounds of all frequencies such as high, medium, and low frequency . Although it is called full frequency, it cannot cover all frequency bands. Full frequency refers to the wide range of frequency and a wide coverage. The speakers of full-frequency audio have high integration and relatively accurate phases. The tones in each frequency band tend to be consistent, and the distortion rate in the ear is low. Especially the mid-frequency part is excellent, and most of the sounds made by people are mainly medium-frequency, so the voices are full and natural. Therefore, full-frequency audio is mostly used in TV audio (soundbar), which can improve and improve the sound effects of the TV. So how does the full-frequency TV audio perform?
Let’s take the Jeko TV audio HA860 as an example. Its effective bandwidth range is 55Hz-20kHz. The effective bandwidth of the TV is about 150Hz-10kHz. The normal human ear can effectively receive sound range usually between 20Hz-20kHz. It can be seen that the frequency range of the Jeko TV audio is wider, which can improve the sound quality of the TV. The frequency curve of Jeko Xiaoheba is flat, with no obvious peaks and troughs, which means that Xiaoheba has no standing wave effect, and the overall hearing is relatively gentle and gentle, and the transition is natural.
Xiaoheba HA860 audio frequency curve
TV audio Xiaoheba HA860
Some users left messages saying that they felt that the audio effects of TV audio and TV were not much different, which was a bit unfair to the TV audio. If you just judge by the size of the sound and feel that the difference is not big, you can assert that the TV audio is useless, but it is not. The TV's own sound system, because the TV body pursues lightness, the TV speaker cannot be made very large, so the bass is insufficient; most TV speakers are installed (left and left and right positions at the back or left and right positions at the bottom), resulting in serious high frequency attenuation. At the same time, due to the complex structure of the TV, some standing waves cannot be avoided, so that the mid frequency will also lack some details. The high-frequency details of the TV audio are rich and realistic, the mid-frequency is delicate, the bass layering is strong, and the dive is deep. If you really want to compare, you can find some movies with richer sound levels or music with strong atmosphere, listen to it and compare it.
Of course, everyone has different understandings and feelings about voices, and each person has different opinions. When finding a TV audio that suits you, in addition to looking at the technical hard indicators, the final touchstone is still your own ears. No matter which audio category or product form is, you might as well give it a try.
