Innovative digital audio processing technology brings differentiated user experience of consumer electronic products)

[Liu pin] Dr. Tan Jun, executive director and president of sontia Asia Pacific, will be welcomed last weekend. Face-to-Face chat is rewarding. Instructor tan shared his current situation and future developments in audio processing technology, and opened a lot of blind spots in understanding this aspect. I saw this report today. I will repeat it here.

hearing has always been an important means for humans to perceive the world. However, from the recent development of various electronic products This important Perception means is being weakened-whether it's a mobile tablet or a digital TV, visual imaging has always been the target of various companies, from black and white to color to 3D, 4 K, the display technology is advancing by leaps and bounds, while the audio processing technology remains at a level more than a decade ago. As various electronic products become increasingly slim, the consumer's auditory experience has deteriorated, it's time for a revolution in hearing.

I. Why is the user experience of consumer electronic products degraded?"At present, a major dilemma for consumer electronic products is that the user experience has actually been" Regressed !" At a press conference held by sontia, a digital audio processing technology company, Dr. Tan, executive director and president of sontia Asia Pacific, pointed out that "due to the pursuit of various electronic products, as a result, the speaker design is light and thin, and we know that the speaker needs to move through the vibration film to drive the air vibration to obtain a sense of listening. Therefore, in the traditional method, to obtain a good sound quality, there must be enough cavities, this is in conflict with the current thin and flat electronic products. sontia's innovative audio processing technology not only solves this conflict, but also allows the audience to enjoy a fever and sound level."

Speaker sound principle

 

tan Jun explained that the appearance of the panel actually caused the speaker to" breathe "the sound cavity to become smaller. As a result, the sound quality of the speaker system of consumer-level electronic devices is often quite disappointing, which also results in the consumer's visual enjoyment being satisfied, but the auditory enjoyment being sacrificed. "So I said the consumer experience has been regressed ." He stressed.

The consequence of this is that consumers often feel that the electronic products are insufficient in high school bass, lost in sound details, chaotic in sound field positioning, depressed bass, and dizzy and disgusting after watching for a long time. On the other hand, most audio processing of consumer electronic products today is related to frequency response. These processing results in distortion caused by digital computing, and many high-pass, low-pass, and band-pass filters are used, this damages the original phase equilibrium of the system, resulting in the loss of sound detail and the destruction of the original sound field. These Signal Processing Methods for sound field reconstruction are achieved through the technology of virtual surround. Simple logic: Since it is impossible to reconstruct the true surround feelings, these technologies use the so-called "left-right crosstalk elimination" technology, so that the Left sound only enters the left and right sound only into the right ears, which leads to the illusion of stereo in the consumer's mind. However, this technology can only produce results in very small Listening Areas, so it is not suitable for use when many listeners (such as living rooms) or listeners are constantly moving (such as kitchens. In addition, the real stereo sound caused by the virtual stereo sound is different from that caused by the high Fax sound. The virtual stereo sound is completely different from the original audio field during music and video recording, the false sense is easy to make consumers suffer from hearing fatigue, so they are not suitable for watching movies and listening to music for a long time. This virtual Sound Field will cause an ethereal feeling when listening to the voice of people. It is not suitable for listening to solo, news reports, broadcast, and so on. Therefore, when playing these content, we recommend that you disable the virtual audio field.

Consumption of electronic audio experiences degrades

2. Where is sontia's audio processing technology innovative?
"The stable phase technology of sontia only takes three steps to enable fever-level sound quality for consumer products ." Tan Jun explained, "The first step is to test the audio parameters of the customer's products, and the second step is to customize the SPT.AlgorithmThe third step is to embed the SPT algorithm into the customer's product for correction ." Although it is a simple three-step process, it implements customized audio processing for each speaker. The performance of such audio processing is obviously due to the general practices of those cloths considering user speaker indicators.
Huang Jianqiang, Chinese Business Development Manager of sontia, added that the stable phase technology of sontia's SPT (stable phase technology) not only corrects the system's frequency response, but also fully understands the overall complex recording process, the use of post-recording Correction Technology for comprehensive correction of the time domain and phase of the speaker system, This is a revolutionary innovation.

 

He explained that SPT is essentially a time-domain and phase-oriented Audio Signal Processing Technology in the recording studio. However, the only thing in the world is to understand the operating principle of the Speaker and the music recording process as a whole, the time-domain and phase-oriented SPT stable phase algorithm is used to correct the frequency response and time-domain and phase in each phase of the speaker system signal chain, combined with its proprietary research on cochlear acoustics and psychological acoustics, it comprehensively improves sound quality. The modified speaker system can improve the transient response of 12.5db, convert time-domain distortion to the energy of the main signal, and present sound details that could not be expressed by the original speaker system perfectly, and maintain Frequency Response flat. Therefore, a small amount of computing can be used to improve the sound quality of the recording studio, which is then applied to consumer electronic products.

Sontia's SPT (stable phase technology) stable phase technology

sontia SPT dynamic bass enhancement, on the basis of the existing ''remove harmonic ''', the patented organic convolution algorithm is used to extract the bass components of the music files during playback for analysis and insert the relevant harmonic components, and dynamically adjust according to the content, without exceeding the speaker's low frequency dynamic range, more detailed to improve the sound effect on the bass, compared with the traditional method of inserting fixed harmonic, this organic convolution algorithm is more natural. In addition, it can completely reproduce the original bass with the correction of the cochlear acoustics and the psychological acoustics.

 

During the on-site sound test, we noticed that the audio processed by the sontia SPT is more detailed, the bass is full, the treble is clear and transparent, and the positioning is accurate, greatly improving the user experience.

3. sontia brings THX-level sound effects to consumer electronics

those who take a fancy to the Star Wars film will be impressed by the amazing sound effects in the film. I believe many enthusiasts The home theater also hopes to obtain THX-level sound effects. Now, THX sound effects are expected for common consumer electronic products. At the press conference, Tan Jun also announced THX Ltd. strategic Cooperation with sontia has been launched. "THX is a certification, which is developed by Lucasfilm to ensure the quality of home audio/video equipment (home theater) designed for family drama institutes) provides complete quality specifications. THX standards are different from international standards. Most standards have an acceptable range, but THX has no acceptable range. There is only one minimum requirement and must be exceeded to pass, eliminating human fatigue. In the past, it was difficult to pass this certification. Now, as long as we work with sontia and use sontia's sound effect processing technology, we can get THX certification ." Tan Jun stressed that "the purpose of this cooperation is to provide more comprehensive audio and speaker product series for customers at various consumption levels to demonstrate superior audio performance ."

he revealed that sontia and THX will work with sontia's key testing lab and T HX's precision testing system analyzes products in detail to evaluate product performance. This dual test method aims to achieve superior audio performance for various products.

Tan Jun pointed out that sontia has a very flexible business model. It can provide algorithm IP authorization, a PCB edition tailored to users, and even speaker design and product industrial design, these models meet the needs of local companies at different levels. "We provide completely customized services. We have already set up a Technical Application Center in Shenzhen to provide our customers with product testing and parameter calibration. In the future, shenzhen will become the sontia Asia Pacific Technical Support Center." Tan Jun said

Pcba solution provided by sontia

 

 

Sontia has a flexible business model

currently, in the field of consumer electronics, in addition to the product thickness, the number of CPU cores, and the number of GPUs, each vendor cannot find any differentiated technology, sontia's innovative SPT technology can provide new differentiated experiences for consumer electronic products. "We believe that only digital + simulation can achieve innovation, and our audio technology can add value to consumer electronic products, it helps local customers find their own blue ocean in the Red Ocean!" Tan Jun pointed out. "The costs of using sontia by manufacturers are very low, but sontia provides great value-added space for manufacturers. LG bar speakers using our technology are already available in the market ."

From: http://www.eetrend.com/interview/100039358