[Home Theater Network HDAV.com.cn] For many home theater enthusiasts, the sound quality of the subwoofer is an important part of the whole system, so whether it is in the position of the subwoofer, the connection wire or the product purchase It takes a lot of energy and time. As one of the world's largest speaker manufacturers, Paradigm has always attached great importance to the design and production of subwoofers.
Barryton's infusion of its subwoofers is no less than other types of speakers, including unique vibration-eliminating designs, comprehensive cooling systems, advanced anti-limiting circuits, advanced output stages, and power factor correction systems. , sophisticated digital signal processing design and more. And the ultra-bass product has created an excellent low-frequency signal management and correction system: PBK (Perfect Bass Kit).
"Video and New Life" will give you a detailed introduction to the composition and use of PBK technology.
What is the PBK function?
In the room correction system, Paradigm has exclusive ARC technology and is widely used in its Anthem AV amplifier, and PBK (Perfect Bass Kit) is the derivative of this room correction system ARC. PBK is based on research conducted by the National Research Institute of Canada (NRC). The goal of the NRC is to figure out the correct target response in the room of the speaker (in this case the subwoofer) and then develop a way to achieve the same response in any listening room. Using a patented approach, PBK measures the frequency response of the subwoofer in your room and then calculates the target response for optimal low frequency performance.
The importance of low frequency management
Even though the subwoofer is already in the ideal position, the room still has a significant impact on low frequency performance. Room sizes, dead spots, archways, and even furniture can transform the room into another instrument that performs with harmful sounds and resonances with musicians or movie scores. The bass sounds swollen or rumbling and has poor clarity.
â–ŒPBK's goal
The frequency response of each PBK microphone is accurately measured and the data is used to create a microphone calibration file on the PBK software CD. In addition to custom filter topology, PBK also uses ultra-efficient, infinite impulse response (IIR) filters: this minimizes delay and reduces processing noise. Limiting the combined application of IIR filter bandwidth and custom topology means that the air noise that can be generated during any filtering process is small enough that it is completely inaudible.
In order to improve the accuracy of acoustic correction, the general automatic sound field correction system will use the built-in DSP for calculation, while the PBK uses computer software for calculation, relying on the powerful processing power of the computer CPU to achieve more complex and accurate sound. The school is working.
With this Perfect Bass Kit system, the negative impact of previous room boundaries on sound quality will be a thing of the past
â–ŒMulti-point measurement makes the low-frequency restoration more accurate and efficient
PBK allows multiple microphone measurements: Most room equalization methods work from a single point source and make a measurement at the main listening position. However, PBK is prepared for measurement points selected by multiple users (recommended at least five, but up to ten points can be measured). Unlike many "room equalization" systems, PBK corrects peaks (modes) and troughs (anti-patterns): Both are corrected, allowing us to get a more accurate and natural room response. To limit the power amplifier requirements and signal-to-noise ratio, PBK also appropriately limits this correction.
â–ŒSimple and quick operation
In the subwoofer set of Barryton, you have two USB cables you need: one for the test microphone and the other for the subwoofer. Then use a personal computer with two free USB ports to install the PBK software included in the package. It is recommended to download the latest version from the website of Barry. When everything is ready, connect the subwoofer and the PBK microphone to the computer, and the software will automatically recognize it and enter the state ready for testing. Automated measurement, image quantization and auto-correction can be achieved by pressing the start button. The final corrected data is written directly into the Barry's subwoofer and the entire calibration process can be completed.
After the test is completed, the system will display the current low frequency response curve (red) and the corrected curve (purple)
â–ŒLow frequency signal processing and correction
When the computer with the test software sends a signal to the subwoofer to play these test signals, the signal is picked up by the individually calibrated microphone, and the process begins. The system uses a frequency sweep of the subwoofer to highlight the problem area and then determine the necessary adjustments. This requires you to place the microphone at least five different locations. The layout is then stored on the connected computer. After the best solution is calculated, upload it to the subwoofer and the calculated room correction is almost complete.
Conclusion: PBK provides one-stop low-frequency management and correction for the average home theater player, ensuring that every user of the Miles subwoofer can enjoy excellent low-frequency effects in their own room. The home theater system consisting of the singer and the hymn, the surround sound effect and the multi-channel surround and shock sense are outstanding in any space or room, which is what Barry has always insisted on. To optimize the performance of the sound, so that ordinary audio and video users can experience first-class and professional sound. More fresh and fun home theater information, please pay attention to home theater network (WeChat: cnhifi) http://, the country's most influential home theater audio player interactive media website.
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