& lt menu bar details >

1. Switch to navigation/paging. Two different user interfaces

2. Lock the effect mode. Mode locks will be handled.

3. Show/hide the notification bar icon. Whether to display a fixed V4A notification in the notification bar.

4. Load the sound configuration. Load an existing sound profile.

5. Save the sound configuration. Save the current sound configuration for saving.

6. Interface control level. Simple/complex/expert three different adjustment interfaces.

7. Sound compatibility mode. Better sound effects in your own and third-party players.

8. Install/uninstall the driver. Installation and uninstallation of drivers. 9. Driver status. You can know the version, running state and sampling rate of the driver.

10, update the log. Version update log of V4A.

1 1. Check for updates. Check the latest version of V4A. 12, Help and About. Some introduction and explanation of V4A.

& lt headphone effect >

Note: Bluetooth, USB, and audio low-seat settings are the same as headphones.

1, effect master switch. This option defines whether the headphone sound effect of V4A is enabled, and V4A is the main switch.

2. Replay gain control Replay gain control is mainly used to dynamically control the volume, amplification or attenuation of audio. (1), enabled. Whether to enable this effect. (2) the intensity of the effect. The intensity of the effect represents the speed at which the volume increases or decreases. The stronger and faster, the greater the final turnover. The weaker and slower it is, the closer it is to the original volume. Recommended medium. (3) Maximum gain multiple. When the volume of audio is too small, the playback gain may have a very large magnification in order to amplify the volume to a set level. The higher the value, the louder the volume. If it is too large, the noise in the song will be amplified. Recommended 4 times. (4), the maximum volume. This value defines the maximum volume decibel value of the sound from the playback gain. The larger the value, the louder the volume, and 0 decibel represents the maximum value of the digital signal. In order to make the sound softer, we suggest-1.9 dB. 3. Viper -DDC

(1), enabled. Whether to enable this effect. (2) Monitoring equipment. Choose your own headset model.

Note: VIPER-DDC is a HIFI sound effect, which is used for earphone calibration. VIPER-DDC has supported the calibration of nearly 500 headphones, and will continue to update and support more headphones. So, if you can't find your model in the list, please temporarily turn off this function or try another headset.

4. Spectrum spreading

(1), enabled. Whether to enable this effect. (2) strength. Select the expansion intensity.

Note: Spectrum spreading is a kind of HIFI sound effect, which is used to spread the spectrum of lossy compression. If you often play music that impairs compression (such as mp3, ogg, aac, etc. ), this function can give you an almost lossless listening experience. However, if you play lossless music, we recommend that you turn off the current function.

5.FIR equalizer 10 segment 5 1 1 order FIR linear equalizer. (1), enabled. Whether to enable this effect. (2) Select a preset. Here, you can select several equalizer effects preset in the program. When you choose Custom, you will manually adjust the settings of the graphic equalizer. (3) Manual adjustment of graphic equalizer. When touching the graphic equalizer, a graphic equalizer interface will pop up, and you can adjust the gain attenuation of 10 frequency band by yourself. 6. Pulse feedback effect The function of pulse feedback effect is that when a sample file is given, the concert of the player presents exactly the same sound characteristics as the sample, such as equalization, reverberation, surround, headphones, warm heart and so on. First of all, you need to ensure that the ViPER4Android/Kernel directory exists in the root directory of the SD card, and all the sample files exist in this directory. If not, you can download the latest package, unzip SDCard_V4A.zip. (1) and enable it. Whether to enable this effect. (2) Select the pulse feedback sample. Here, you can select the pulse file in the ViPER4Android/Kernel directory. 7. Field Surrounding Field Surrounding is the operation that the pointer surrounds the sound field. Sound field can be understood as horizontal sound field or stereo sound field. (1), enabled. Whether to enable this effect. (2) Strength around the site. This value defines the strength of the field surround effect. The stronger the sound, the more obvious the three-dimensional effect will be. The sound comes from the left and right sides of the ear. The suggestion is medium. (3) Central power. This value defines the intensity of the central voice. The louder the voice, the clearer it is, the weaker it is, and the more ethereal it is. 8. Differential wrapping (1) is enabled. Whether to use this effect. (2) Select the delay time. Adjust the differential delay.

9. Headphones surround the nuclear engine+

Headphone surround sound engine+is used to simulate the surround sound of headphones (1) and enable it. Whether to enable this effect. (2) Select the effect quality. Used to adjust the effect intensity of surround sound. High quality consumes more CPU.

(The mobile phone whose CPU does not support 32-bit floating-point operation cannot open this item. 10, digital reverberation Digital reverberation refers to the use of mathematical methods to simulate sound perception in a set environment. For example, a song can get the feeling that it sounds like it is in the auditorium, living room, bathroom and so on. (1), enabled. Whether to enable this effect. (2) room size. This value sets the site area of the virtual environment. The larger the value, the more hollow the sound sounds and the more echoes there are. (3), the sound field size. This value sets the width of the room specified above, in meters. Suppose the size of the room above is set to 100 square meter, and the width here is set to 14 meter, then the other length of the room is 7. 14 meter. In other words, the room size and sound field size define the area and aspect ratio of this virtual environment. The larger the value, the more obvious the sound coming from both sides. (4) Water vapor content. This value defines the humidity of the air in the above environment, and the water vapor in the air will strongly absorb the echo, so the larger the value, the less the echo. (5) Reverberation signal ratio. This value defines the volume of the simulated ambient sound. (6) The original signal ratio. This value defines the volume of the original sound. When simulating indoor environment (such as living room and auditorium without a lot of moisture), room size and sound field size can be used to define the area of the environment. Water vapor content is 0~20, reverberation signal ratio is 20~50, and original signal ratio is about 50. For an indoor environment with a lot of moisture, such as a model bathroom, the room size and sound field size can be used to define the area of the environment. Water vapor content is 50~ 100, reverberation signal ratio is 40~80, and original signal ratio is about 50. 1 1. The function of dynamic system in V4A is to deal with the dynamic range of sound. Generally speaking, it is bass, treble, limiting and so on. (1), enabled. Whether to enable this effect. (2) Monitoring equipment. This value is used to set the type of earphone connected to the earphone jack. If you can't tune your favorite bass in all devices, choose earplugs. Earplugs are a common choice. Earplugs are recommended. (3) Dynamic bass. This value defines the average volume of dynamic bass, and the higher the value, the stronger the bass. Suggest 33%. 12, electron tube simulator (6N 1J).

This option defines whether the pipe simulator effect is enabled. The electron tube simulator in V4A is a simplified effect of simulating electron tube sound by mathematical method. After opening, it will greatly weaken the odd harmonic distortion of high frequency and increase the even harmonic distortion unique to the electron tube. 13, fidelity control allows you to have a better bass experience and better sound quality enjoyment. (1), enable the viper bass. Whether to enable this effect. (2) Bass processing mode. Select the bass processing mode. Divided into natural bass and alcohol bass+mode. (3) Select a bass point. Used to adjust the bass point. (4) Select the bass gain. Used to adjust bass intensity. (5) Enable the definition of Viper. Whether to enable this effect. (6) Select the sharpness processing mode. It is divided into natural therapy, oxydol+and XHIFI mode. (7), choose clarity. Used to adjust the detail reduction. 14. Hearing protection can reduce the working pressure of human auditory/analytical nerves through some special processing of audio, thus protecting the auditory system and optimizing the auditory experience. (1), enabled. Whether curing technology (2) is enabled and the cross-feedback strength is selected. Used to adjust the filtration strength. 15, and the total output gate is the output limiter of V4A to prevent clipping distortion caused by excessive volume. (1), output gain. Select to increase the number of decibels decreased.

(2) Sound channel balance. Used to adjust the hearing deviation of some users' left and right ears.

(3), limit the level. This value defines the maximum amplitude of the waveform limited by the limiter, and 0 dB is the maximum value of the digital signal. The smaller this value is, the easier the audio will be compressed (the smaller the volume), and the sound details will be lost, but the final output volume can be effectively controlled. 0 decibel is recommended.

& lt speaker effect >

1, effect master switch. This option defines whether to enable the speaker sound effect of V4A, which is the main switch. 2.FIR equalizer. Equalizer with earphone.

3. Pulse feedback processing. Same as the headset description.

4. Digital reverberation. Digital reverberation with headphones.

5. Speaker optimization.

6. Very loud

Extra large volume is an effect of further amplifying external sound at the software level, but limited by the protection of speakers, the volume will not be too large. (1), enabled. Whether to enable this effect. (2) the intensity of the effect. The intensity of the effect represents the speed at which the volume increases or decreases. The stronger and faster, the greater the final turnover. The weaker and slower it is, the closer it is to the original volume. Recommended medium. (3) Maximum gain multiple. When the volume of audio is too small, EL may have a very large amplification ratio in order to amplify the volume to a set level. The larger the value, the larger the volume. Infinite is recommended. (4), the maximum volume. This value defines the maximum volume decibel value of sound emitted from el. The larger the value, the louder the volume, and 0 decibel represents the maximum value of the digital signal. 0 decibel is recommended. 7, the total output gate

This option is the output limiter of V4A to prevent clipping distortion caused by excessive volume. (1), limit level. This value defines the maximum amplitude of the waveform limited by the limiter, and 0 dB is the maximum value of the digital signal. The smaller this value is, the easier the audio will be compressed (the smaller the volume), and the sound details will be lost, but the final output volume can be effectively controlled. 0 decibel is recommended.

Detailed description of the XHiFi function

1, effect master switch. This option defines whether the headphone/Bluetooth sound effect of V4A is turned on, which is the main switch.

2. Replay gain control. Playback gain of headphones for FX version.

3.FIR equalizer

XHiFi's FIR equalizer adopts 10 segment and 2047-order linear FIR equalizer, and its quality is much higher than FX version.

The adjustment method is the same as the FIR equalizer of FX headphones.

4. Audio recombination

Audio recombination is the core content of the version of XHiFi, which is mainly used for details and treble compensation of harmful music such as MP3. (1), go. Whether to enable this effect. (2), detail analysis. This value defines the degree of detail and treble recovery. The larger the value, the more details and treble the sound will be. For ordinary earplugs, it is not recommended to turn on this function at this stage, and high-frequency harshness may occur. For better earplugs such as Magic Sound/Philips/Zombie/Senhai/White Tooth /AKG, this value is recommended to be 30~50. For high-end headphones, you need to set this value according to the length of the headphone cable. The base number is 40, and the value increases by 10 for every 80 cm increase in line length. The front-stage amplifier /amp connected to the back of the mobile phone has a base of 60, and the headphone cable increases by 10 every 80 cm. If you connect an electron tube amplifier, use 100 directly. (3), bass outline. This value defines the percentage of the reconstructed bass profile in the total frequency band. The larger the number, the stronger the bass, but the midrange and details will be slightly lost. It is recommended to use 50~70 for earplugs and 20~30 for headphones.

Detailed description of curing+technology

The Chinese name of this technology is "Hearing Protection and Optimization System". Its main function is to reduce the working pressure of human ears and auditory/analytical nerves through some special audio processing, thus protecting the auditory system and optimizing the auditory experience. In fact, listening for more than 2 hours can obviously improve fatigue, earache, dizziness and upset. Cure+ is an audio experience technology specially designed for headphones, which can be used for headphones, earplugs and in-ear earplugs. Cure+ includes the following technologies: head cross-feeding based on head model. A strange harmonic suppressor. A group delay phase adjuster. Transient regulator. High-low pass filter. First of all, Cure+ will use Crossfeed to process the sound, just like it comes out of the speaker. Then the sound in front of you will become more realistic after passing through the head model, just like a singer singing for you face to face. The main details in the sound will come at you without reservation, and you don't need to think much. This step will alleviate the fatigue caused by listening to songs for a long time and optimize the listening experience. Secondly, Cure+ uses a group delay phase adjuster to adjust the phase of each frequency band in the sound waveform. People's auditory psychology is like this. No matter how complex the sound is, the sound that reaches your ears first will bring you the most obvious experience (even though the time difference may be only tens to hundreds of microseconds [one microsecond is one thousandth of a second]), and the high-frequency and low-frequency waveforms that reach your ears at the same time will be covered by bass. When you hear the bass drum over the treble or rumble, although you may not know it, your brain is trying to divide the sound and try to separate every detail. After a long time, you will feel tired. The group delay phase adjuster in Cure+ will divide the sound, and then adjust the delay of each frequency appropriately, so that the high frequency can be heard first, then the intermediate frequency, and finally the low frequency. In this way, the brain does not need too much frequency division, and fatigue is naturally relieved. Next, Cure+ uses a transient regulator to appropriately reduce the instantaneous dynamics of sound. Light music can make people relax and DJ can make people excited (just like coffee). This principle is used in transient regulators. Of course, Cure+ won't turn DJ into light music in your hearing, but let your brain relax moderately. Music needs listening and appreciation to understand its true meaning. Then, Cure+ uses an odd harmonic suppressor to suppress the odd harmonics in the sound to some extent. Have you ever had such an experience, somewhere, after hearing a certain sound, you will feel extremely uncomfortable in your ears and fidgety in your heart? This is the harm of odd harmonics to human auditory system. People like even harmonics (the sound of gallbladder machine), but hate odd harmonics. Then sometimes, some strange harmony is a necessity of music, such as the plucking sound of guitar and the * * * sound of cucurbit silk. Therefore, Cure+ can only moderately suppress odd harmonics of certain frequencies. Finally, Cure+ uses a high-low pass filter to filter out sounds that people can't hear or cause turbidity (of course, this is not a complete filter, but a special means). Some sounds can't be heard by human ears, but it doesn't mean that the brain can't hear them. The famous electronic mosquito repellent incense device with high-grade stereo is really effective, but do you find it annoying and tired to repel mosquitoes? Just like looking for a key in a dark room, you may not be able to see anything in the room clearly, but your brain is forcibly separating the only visible light. Soon you will feel top-heavy and extremely tired.

Detailed description of auditory calibration

Because everyone's hearing system is different, some people have different hearing in their left and right ears, some people have high-frequency phobia, …, and everyone has different concepts of sound field. "Auditory calibration" is born for this purpose. With a simple wizard, you can adjust the benchmark parameters of V4A system for your ears. The "Auditory Calibration" function will strive to make every user experience the ultimate basic effect.