In addition to the emphasis on taking pictures in new mobile phones released in 2016, music phones are also an indispensable factor. In terms of sound effects, in addition to the well-known Hi-Fi, DTS, Dolby Atmos and other sound effects are also very popular. In this evaluation, we will compare the sound characteristics and the weaker of HiFi and DTS. When users buy mobile phones that emphasize music performance, they usually get confused about these terms. This evaluation will also sort out some nouns. Users sort out their clues, because only their own mobile phone is a good mobile phone.
In order to facilitate the comparison of Hi-Fi and DTS, we chose two mobile phones as the comparison object, respectively, ZTE 7 with Hi-Fi function and Huawei Nova with DTS function. First of all, let's take a look at the settings interface of Hi-Fi and DTS for the two phones.
The DTS logo is displayed in the upper left corner of the Huawei Nova music player. After plugging in the headset, the user needs to turn on the DTS sound effect from the settings menu. The HiFi function of ZTE Tianji 7 needs to be turned on in the settings menu.
Before embarking on a formal test, let ’s take a look at what DTS and Hi-Fi mean for music enthusiasts.
What is Hi-Fi?
Hi-Fi means "high fidelity" and is defined as a playback sound that is highly similar to the original sound. Users often hear that smartphone manufacturers often promote the Hi-Fi technology of products. In fact, Hi-Fi traditionally belongs to the field of speakers. However, as the concept of mobile phone Hi-Fi has increased in recent years, users have gradually become familiar with the term HiFi. In the final analysis, what is Hi-Fi specifically? To explain this problem, I have to first talk about how users generally hear digital music.
The digital music you hear is basically made in this way. First, read the 0/1 information stored in the CD through the CD machine or the optical drive of the computer, and then all are converted into a binary file. This file is called digital music. In general, digital music files are relatively large and are not easy to spread on the network, so there are two forms of lossy compression and lossless compression. Among them, MP3 that users often contact is a type of lossy compression, which will Has a certain impact.
Mobile phone playback is another opposite process. Generally speaking, it refers to the process that a mobile phone converts lossy or lossless digital music into analog signals through some hardware, and then plays the sound through the mobile phone's amplifier or external headphones. If the last sound played by a smartphone is highly similar to the original sound created by the music producer, this means that Hi-Fi is implemented. It is important to point out here that Hi-Fi is related to sound quality and has nothing to do with the user's hearing. Because sound quality can be measured with professional equipment, it is more objective, and hearing is related to the user's personal hearing and preferences, and is more subjective.
How do smartphones implement Hi-Fi?
After talking about the more important digital music production and playback process, Hi-Fi should be on stage.
In the first step, MP3 files or other lossless music files on the ROM or TF card of the mobile phone will be decoded first and become a bunch of 0/1 digital signal information strings. Now that the decoding capabilities of smartphones are generally relatively strong, and there are also error correction mechanisms, there will be no problem with the impact on sound quality in this link.
The second step is to process digital signals with smart phones. In this session, some phones will have Dolby sound effects, SRS sound effects and other functions. These functions will make the sound effects change. Therefore, in order to pursue Hi-Fi, these functions cannot be turned on. Of course, the most important thing is the SRC process. Generally, the sampling rate of audio information for a CD is 16bit, 44.1K, and of course there are sampling specifications such as 48K, 96K, and 192K. However, the sampling specifications must be unified in the latter process. The latter process is called SRC. Will affect the sound quality.
The third step, the user can hear music because the sound is an analog signal, this process involves the smartphone to convert the digital signal to an analog signal, so the digital-to-analog converter is very critical. In general, smartphone manufacturers will Use DAC or codec to achieve.
In the fourth step, the signal converted by the DAC and codec is generally weak and cannot directly drive the speaker. Therefore, the signal needs to be amplified, which requires a signal amplifier and is likely to be distorted during this process.
The fifth step is, of course, the speaker device. Users need to listen to music through the speaker device or the earphones. Generally speaking, this link is a test of the quality of the equipment interface and the quality of the wire. If it is not very inferior, then the sound quality Does not play a fundamentally decisive role.
Smart phones that support Hi-Fi generally use independent audio processing chips during the DAC process, while phones that do not support Hi-Fi generally use cheaper codec chips. Hi-Fi of ZTE Tianji 7 adopts the way of using professional audio processing chip for DAC link. ZTE Tianji 7 uses AKM4961 chip and AKM4490 chip, dual flagship independent chips ensure pure tone playback, pure tone recording, and also improve the transient response and DAC conversion accuracy.
What is DTS?
DTS is actually a company focused on audio effects. Founded in 1993, it has developed from one of the pioneers of multichannel audio technology to one of the necessary audio standards for Blu-ray. It has been widely used on Internet-related consumer electronics platforms.
How to achieve DTS?
Huawei Nova uses the internationally renowned audio technology company DTS7.1 surround sound technology, users can experience the cinema-level effect by wearing exclusive headphones, and the sound quality of the listening song after DTS can be reproduced with true 3D virtual sound field positioning The sound field effect, more 5.1-channel, 7.1-channel and more channels can bring rich and realistic surround stereo space sense. In addition, Huawei Nova can customize personalized sound styles according to user preferences, preset DTS7.1 surround sound control software, users can choose surround sound field mode and headphone type.
Music audition test
Listening to music in Hi-Fi mode, ZTE Tianji 7 gives the impression that the bass is thick, the midrange is strong and the treble is clear, and the original sound music is more realistically restored, giving people a pleasant feeling. However, it should be noted that the selected track must be a lossless version of the file, because it is difficult to hear the difference when using Hi-Fi to distinguish ordinary audio files about 3MB in size. To some extent, users want to hear the real Hi-Fi must choose songs with larger capacity, otherwise Hi-Fi is not very obvious.
There are three main points of listening to music under the DTS sound effect. One of them feels that the sound is enhanced compared to the previous one, the other feels that the sound becomes thicker, the third feels that the sound becomes more three-dimensional, and the sense of surround is enhanced. In general, DTS does not require users to use large music files, and does not care about lossy and lossless audio formats. As long as the audio files can perfectly modify the sound, the sound becomes more beautiful and stereoscopic, and the effect is outstanding.
Movie sound test
When watching movies or other video programs through Hi-Fi, the biggest feeling is that the audio details are well presented, whether it is the noisy ambient sound or the protagonist's dialogue can be clearly distinguished.
When watching movies with DTS, the biggest feeling is that the sound effect is more intense. The addition of surround makes the user have an immersive feeling, and the audio feels more thick, and the effect is very powerful.
Summary: After analyzing the technical principles and auditioning, we can easily find that both Hi-Fi and DTS technologies have their own advantages. The biggest feature of DTS is to restore the sound and maximize the reproduction of the original sound. In terms of use effect, ZTE Tianji 7 can keep the sound delicate to the maximum extent, and the effect is most obvious and outstanding in the lossless audio file format. Huawei Nova's DTS technology focuses on surround sound. The actual effect can not only improve the thickness of the sound, but also enhance the stereoscopic effect of the sound, and does not require the audio file to be a lossless format. Overall, the two have their strengths and weaknesses, and users can choose according to their own preferences.
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