Sound Effect Assessment by major companies (DNSe/BBE/SRS/PlayFX/Dolby/Full Sound ...)

Source: Internet
Author: User

In recent years, all major MP3 manufacturers have made great efforts in sound effects. Although it is said that it is not killing you to death, however, this competition has indeed brought a lot of experience to MP3 users.

The new Samsung has torn down iriver and iAUDIO for many years, and has recovered its own style of SONY, as well as two eye-catching iPod and innovation. Sound effects are closely related to ear plugs and headphones. If there is no good device for excellent sound effects, it will be futile. I often say that some ear plugs, such as EX71/51/90 and CX300/400, are some very promising sound effects. Why? It is because the three-frequency audio of these earplugs have made certain gains for different users during audio adjustment. Even if there is no gain, it can be said that the sound can be shallow, if you want high frequencies, there will be high frequencies. Low-frequency adjustment can be very flexible. It is feasible to reduce the low-frequency shallow through EQ, or to use EQ to increase the high-frequency part will not cause harsh or burst sound. Through sound effects, you can fully CUSTOMIZE the sound and listening of these ear plugs, which is also the potential of sound effects. So don't worry before changing the ear plug. It's not too late to update the ear plug after playing EQ! I cannot tell you that your MP3 sound effects can bring you unprecedented excitement and motion. Today I will comment on the characteristics of these sound effects here.

First, I would like to talk about Samsung, which has advanced by leaps and bounds over the past few years. It is said that Samsung signed a contract with SRS when it was just starting to do MP3, and it used srs wow sound effects all the time. After the contract expires, samsung successfully developed its own DNSE based on the original SRS. Samsung's sound effects and SRS are completely different types of things, And DNSE has no real listening gain, the so-called stereo sound is actually quite tasteless. The most important thing is that the EQ of DNSe is very good. In the case of 7 BAR, it can improve the overall sound quality, I personally think that it is a pleasure to hear songs when Samsung's sound effects are enabled. Street mood of DNSE is also one of the trump cards. This mode is to increase the high frequency, or the volume of the most obvious audio part of the song to enable users to hear clearer music in a noisy environment. In fact, it would be perfect to add an srs limiter or an innovative smart volume control. If the EQ adjustment is not appropriate after the Enable, a severe burst occurs.

With years of development, Samsung has now begun to take the dumb route, from the previous manual adjustment of EQ to the current highly selective low-frequency direct gain (that is, high frequency, 2, 3, low Frequency 2.0,), and in the latest DNSE, Samsung successfully added the sound effect superposition technology to completely integrate its 3D effect with other sound effects, fully utilizes all the functions of DNSe. All in all, I am very much looking forward to the development of Samsung technology. I believe that one day DNSe will become one of the most successful sound effects in the world.

Now let's talk about iriver's trump card SRS sound, which has a long history. Like BBE, it is the most important sound effect many years ago and is widely used in TV, computer, audio and even earphone equipment. SRS has an overall high-frequency gain, which is the second optimal sound effect I have ever seen (the first sound effect is SONY's sound effect), and the high-frequency gain is very direct, the most outstanding SRS technologies are 3DSPEACE and 3DCENTER. srs wow is used on MP3, which combines the sound effects of SPEACE and CENTER, this sound effect can significantly improve the definition and penetration of high frequencies, and at the same time create a virtual sound field. This is something other sound effects cannot do. In combination with HZ conversion technology, we can create a variety of different sizes of environment effects, such as large rooms, small rooms, and LIVE. Samsung's DNSe is not comparable to SRS in terms of Virtual Sound Fields, DNSE 3D can only create an illusory sound field, but after all, Samsung MP3 can still use high-frequency gain to make up for the lack of high-frequency passthrough force. As for TURBASS, I don't think there is anything outstanding, however, it is worth mentioning that this low frequency gain can greatly increase the low frequency. SRS sound effects have been used by windows media player a long time ago. SRS has become an important part of products made by many companies, in addition, SRS has developed srs audio sandbox for pure computers and iWOW for iTunes, which makes srs a well-known sound effect.

Now let's talk about BBE, which is just like SRS. BBE is also widely used in many TV sets. Its main feature is to improve music separation and the best sound effects with low-frequency accomplishments, at least in the past. MACHBASS is a sound effect that can increase the intensity of low frequencies a lot. However, unlike TURBASS, MACHBASS does not increase a lot, but is elastically improved, so pay more attention to the quality of low frequency.

BBE, a sound effect that increases the degree of separation by reducing the intermediate frequency. Unlike Samsung's street mod, street mood uses direct high-frequency gain, that is, to increase the volume to achieve the effect of listening to clear music in a noisy environment, while BBE only sacrifices the intermediate frequency to improve the degree of separation without increasing the volume, however, in the old version, BBE still has a lot of gains for High and Low Frequency Sound Fields.

Now, the bbe eq has extended from five bars to the realm close to 10 BAR, but it is not completely, but you can choose the desired frequency range, for example, if you want to add a lower dive, adjust the low-frequency part of the EQ to about 30Hz, and then gain. However, if you want to increase the gain quality, adjust the low frequency BAR to 80 or 125 HZ, which is very personalized. Although the overall quality of BBE is good, its accomplishments in software are far inferior to SRS. So far, it is a pity that no computer-specific sound enhancement software has been released.

SONY, a giant who has been in the walkman and MP3 industry for many years, had the SOUND 1 and SOUND 2 low-frequency gains recognized by everyone as early as the CD age, in the era of MP3, SONY has not been able to keep up. Although the EQ system has been added on the basis of SOUND 1/2, it still does not affect the high frequency, however, since SONY developed CLEARBASS and CLEARSTEARO sound restoration technologies, these technologies make up for and improve sound quality based on sound quality. This move made SONY sit back to the position of the sound brother. In fact, the sound effect cannot completely affect the sound quality. For example, sony clearbass has a fatal disadvantage, which is very output-consuming, CLEARBASS ensures low-frequency non-distortion at the cost of output, but we also know where the output of a small MP3 player is bigger? If the output is not high enough, it will be a part of hard work for CLEARBASS. What will happen when the volume is high? The result is serious overall distortion of the music. Although the low-frequency sound is not guaranteed, the high-frequency and intermediate-frequency sound cannot be completely upgraded, and the volume will be severely affected by CLEARBASS, it is often the low frequency co-seismic, the Music volume will be much weaker, but in general, SONY's CLEAR series is still very good sound. Finally, let me talk about the sound effects of innovation and iPod.

How many sound cards have the company innovated? The company launched the world's first MP3 (Editor's note: the first one should be shihan MPman F10), but due to funding problems, after a few years, I was caught up by iPod, SONY, and other companies that developed MP3 technology later. Sound Effects, innovative sound effects, can be said to have development potential but are not yet developed. I don't understand why they are not used in MP3, there is bass boost in all the innovative MP3 files. After ZVM, a smart volume control was added to adjust and CONTROL the song VOLUME, this ensures that there will be no high-frequency harsh and low-frequency sound bursts. One thing to mention here is that when bass boost is enabled, smart volume control must be enabled, just like the limiter leveler in SRS, which can effectively CONTROL the phenomenon of low frequency bursts, otherwise, the low-frequency distortion will be very serious. For the innovative EQ, there is nothing extraordinary, but it is superior to the iPod sound.

IPod sound quality is well known-boiled water, but after self-testing, after the latest release of the new iPod, it is said that because of the chip, the low frequency is better than the original, however, there is still no major improvement. However, the iPod is still not optimistic about sound effects. Basically, there is no very neutral EQ except for the shutdown. Apart from those presets with high gain frequencies, low-frequency distortion will occur when other presets are enabled, in addition, the high-frequency gain also reduces the low frequency, which is helpless. I don't know what APPLE's preset tuner is like. The music is the most appealing when the iPod doesn't have sound effects.

Sound effects can be said to be flavoring. Everyone has their own taste, just like me. They prefer drinks, but some people like pure water very much! The main thing is that you like it. Sound effects are very time-consuming. If you have a good time, you can cook a pot of soup very delicious and have a bad time, I hope this post will solve the sound puzzles of many people.

Supplement: Microsoft PlayFX sound technology includes three aspects: ① 3D surround: Advanced Space surround technology breaks the traditional dual-channel music experience and produces 3D space effect, creates a rich set of listening and music excitement. ② Ultimate Bass: through an adjustable bass booster, You can reproduce the bass, highlight the music depth, and make the bass effect more powerful. Therefore, you can optimize the problems caused by insufficient listening to headphones. ③ Volume balancing: audio tracks recorded at different volumes can be analyzed in a balanced manner, so that different playback content can achieve a balanced and coordinated volume effect. The characteristics of human nature are more important to the ears of listeners. The exciting music performances brought by some technologies make up for the shortcomings of the headset in the low-frequency music spectrum, in addition, the audio source recorded at different volumes can be automatically adjusted to the same audible level.


3D surround is a 3D surround effect obtained through software computation, so that normal headphones can also produce 3D three-dimensional space effects, creating a rich and rich sense of hearing and attention. After 3D surround sound is enabled, the biggest change is the sound field. The sound field is obviously wider than that before 3D surround sound is enabled, bringing a better sense of presence.

The ultimate bass is a clear and pure bass produced through an adjustable bass booster, highlighting the music depth, using the original headset can bring amazing sound effects. After the pure bass effect is enabled, both the low-frequency dive and the volume sense are obviously enhanced, and the attention is also enhanced. It can be said that the effect is quite obvious. In addition, unlike the original "Bass" preset sound effects of the Rui chip, the pure bass does not increase the overall low frequency, but increases the low frequency, the low-frequency acquisition and release speed is still well controlled, greatly reducing the possibility of distortion.

In the playing process of different music sets, Volume balancing provides a sound experience with consistent volume standards to bring a more harmonious and pleasant music experience. In my opinion, it is the most practical function in the three settings. Unlike modified sound effects such as 3D surround and ultimate bass, Volume balancing is not a pure sound technology strictly.

We know that due to the varying volume of songs from different audio sources, especially those from the network, we often need to adjust the player volume frequently during actual listening, which is quite troublesome. The function of volume balancing is to automatically adjust the volume of each song to a relatively balanced state, effectively solving this problem. Of course, this function is not recommended to be enabled all the time. For songs with large volume changes and fluctuations, it is recommended that the sound function be disabled.

Dolby directed logical surround sound


Dolby Pro Logic is a surround sound system developed by Dolby. It combines the four-way stereo sound into two channels by specific encoding means during recording, that is, the original left channel (L), right channel (R), and center channel (C) and the four signals of the loop channel (S), which are encoded and then combined into the dual-channel signals of LT and RT, during replay, the decoder restores the encoded dual-channel Composite Signals LT and rt to the encoded left, right, middle, and surrounding independent signals that do not affect each other, after amplification, enter the left speaker, right speaker, center speaker, and surround speaker respectively. To ensure sound symmetry, the surround speaker uses the Left and Right surround speakers, respectively output from the amplifier. Therefore, the commercial output of the Dolby oriented logical surround sound is called the five channels. However, since the Left and Right surround sound speakers are connected to one sound channel, the output is the same surround sound channel information, so it is actually still four sound channels. There are also commercial dubi-oriented logic AV Amplifiers with six channels and seven channels. The so-called six channels are the central channel with two amplification lines output, respectively connected to the left center speaker and the right center speaker. However, the left and right middle speakers are connected to a middle channel, which is essentially four channels. The seven-channel is to divide the ring sound channel into four output channels, namely, the left rear ring sound, the right rear ring sound, and use four surround sound boxes respectively, which becomes the seven-channel output. However, the four surround speakers output in the seven channels are connected to one surround sound channel, which can only be regarded as four output channels. Therefore, the AV Amplifier with the Dolby-oriented logic decoder is essentially a four-way output, either a five-channel output, a six-channel output, or a seven-channel output. The frequency range of the Left, center, and right audio channels of the Dolby-oriented logic loop can reach 20-20000Hz, which can meet the requirements of the whole audio field, but the frequency range of the ring audio channel is relatively narrow, only 100-7000Hz.

Dolby targeting Logic II

The decoding of Dolby targeting logic Ⅱ is a decoding method that restores the signal (2/0 signal) encoded by Dolby to 5.1 channels. This is a new standard developed on the basis of Dolby targeting logic, in simple terms, the direction Logic II has the greatest improvement in the loop Channel Frequency Response and the change from single channel to stereo, followed by the main sound field (three sound fields on the left, center, and right) this has also been greatly improved. The use of Dolby-oriented logic Ⅱ Decoding for stereo signals not processed by Dolby encoding also has a certain effect.

Dolby Digital AC-3

Dolby Digital AC-3 is a new generation of home theater multi-channel Digital audio system developed by Dolby. Dolby's targeted logic system is a simulation system. The four channels are decomposed from the two channels after encoding. Therefore, there are inevitable disadvantages such as poor separation, low signal-to-noise ratio, lack of stereoscopic effect on surround sound, and narrow band of surround sound. AC (Audio Coding) refers to Digital Audio Encoding. It abandons analog technology and uses a brand new digital technology.

Dolby Digital AC-3's surround sound system consists of five full-frequency channels plus an ultra-bass channel, so it is called 5.1 channels. The five channels include the "left channel", "center channel", "right channel", "Left Loop channel", and "Right Loop channel ". The frequency range of these channels is a full-frequency response of 3-20000Hz. The sixth sub-woofer contains some additional sub-woofer information, which makes some scenarios, such as explosion and impact sound, more effective. Because the frequency response of this channel is 3-120Hz, it is called ". 1.

Dolby Digital AC-3 is a multi-channel surround sound encoding system developed based on the feeling. It divides the frequency of each sound into many narrow-and Small-frequency bands based on the auditory characteristics of human ears. In the coding process, it further analyzes the audio psychology principles to retain valid audio, remove multiple signals and various noise frequencies to make the sound more pure and highly separated.

Dolby Digital AC-3 system available front left, right speaker, center speaker produces a very deep sense and clear positioning of the sound field, two rear or lateral surround speakers and ultra-low speakers are used to present a wide and magnificent sound field, while the information of the six channels is completely digitalized in the production and restoration processes, with little information loss. The full-band features rich details and real stereo sound.

Dolby Digital AC-3 has good compatibility, in addition to its own decoding, it can also serve Dolby targeted logical decoding. Therefore, the dubi-oriented logic Film and Television software can be reproduced using the dubi digital AC-3 system. Due to Dolby Digital AC-3 system encoding is very flexible, so it has a lot of format. It has been used in the United States as a High Definition TV (HDTV) Audio System, the latest DVD machine also contains Dolby Digital AC-3. Therefore, Dolby AC-3 surround sound system may be a promising technology.

Fullsound is a well-known sound effect that Philips uses to remove the "digital" and "distortion" of MP3 music and bring it closer to the restoration of real sound effects. We know that MP3 is a digital audio compression format. Its principle is to encode and compress the remaining information after the audio signal is removed from the Auditory range. After this digital processing, the sound wave curve cannot keep its original smoothness, But it turns into a sawtooth shape. Therefore, the MP3 sound sounds burstable and appears stiff and cold, lack of strength and appeal of on-site sound effects. To make up for this deficiency, many audio systems use software to repair sound signals, such as increasing part of the frequency, increasing the degree of decoding, or expanding the sound field, however, such repair may also lead to new defects, namely distortion and noise.

The Waveform Comparison Between Apsara stack sound effects and general MP3 sound effects.

Philips fullsound sound technology is tailored to improve the playing quality of MP3. Let's take a look at the differences in the sound effects of fullsound.

In comparison, we can see that when fullsound sound is enabled, the intensity of sound is enhanced.

Fullsound uses four key audio processing technologies to deliver an all-round, thick sound experience without common distortion and noise in most audio enhancement technologies. Phillips's patented bass enhancement technology can continually seek available space in audio signals to load additional bass energy to avoid distortion or pump effects caused by conventional bass enhancement, to enhance the bass and accent. Traditional tweeting enhancement only results in loud voice. However, fullsound can distinguish the location of the lead singer and the instrument in the original recording environment. It can be compensated by Transient Signal Amplification combined with multi-band frequency, it not only highlights the accuracy and details of the sound, but also maintains a harmonious frequency, thus producing a natural audio. In short, the fullsound sound technology faithfully reproduce the delicate melody of music by enhancing the intensity of the bass and adjusting the definition details, provide users with ultra-clear sound quality and consistent sound quality.

Fullsound also includes a small stereo fix to compensate for the Space Effect (due to the lack of stereo encoding and high-frequency resolution, resulting in a lack of space in the compressed audio format ). Of course, the repair effect is extremely small, and more is to increase the depth to realize the real restoration of the sound, effectively avoiding the noise produced by the compression enhancement. The voice you will experience is truly surrounded, clear, and natural.


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