What brand of dsp amplifier is good?
From the car amplifier, the mainstream chips are now used by Texas Instruments and other American companies. However, the power amplifier is not only the chip hardware itself, but also the consideration of the industrial design of the integrated circuit board of the power amplifier, as well as the accommodation and cost considerations of the advantages and disadvantages of categories AB, D, G, and H. So currently the best power amplifier design products are mainly from Italy, Germany and the United States. In the atmosphere of the world's top art design (Da Vinci, Michelangelo, Raphael, etc.), Italy has created a unique industrial art system development, and derived car brands such as Lamborghini, Maserati, Pagani, Bugatti (acquired by German Volkswagen), etc. The American power amplifier itself is more rude and lacks in artistic design. It may be its immigration country and rude culture itself. Sufficient welfare guarantees and more humane working hours allow most European designers to release their inspiration to the greatest extent. The industrial nature of the American people is the same as that of the Chinese people. The shell of its power amplifier is the same as the material factory used for Ferrari production. At the same time, its high-quality circuit design and high-quality components make this Italian amplifier high-end can not be added. Let's talk about DSP, the core point of the DSP module is to convert the analog signal into a digital signal first. This is different from the A and AB power amplifiers. Normally, non-digital signals are only completed by frequency cutting. Digital signal processing (DSP) is the use of digital processing, such as a computer or a more professional digital signal processor, to perform a variety of signal processing operations. The signal processed in this way is a series of numbers representing samples of continuous variables in the domain, such as time, space or frequency. Applications include audio and speech processing, sonar, radar and other sensor array processing, spectral density estimation, statistical signal processing, digital image processing, telecommunications signal processing, control systems, biomedical engineering, seismology, etc. Involves linear or nonlinear operation. The DSP power amplifier mainly involves signal sampling and carrier frequency, and the components are intuitively reflected on the processor, digital-to-analog converter, and analog-to-digital converter. Advantages: No-load current between 250mA and 450mA (depending on the speaker circuit) is particularly suitable for electric vehicles and motor homes. Converterless high-speed PWM power amplifier: high-efficiency PWM power amplifier, the world's fastest carrier frequency (> 2MHz), which can achieve HiRes audio transmission and reach extremely small size. The modulation does not go through the digital-to-analog converter, and directly uses the 96kHz time division multiplexing (TDM) signal of the DSP, so the background noise is nearly 0, and the total harmonics are missing x Bluetooth digital / audio expansion port (BT +) 8kHz-384kHz flexible The sampling rate is sufficient to synchronize high-quality signals to 2-16 channels, and the DSP directly processes them without conversion. Suitable for Bluetooth AMAS-96K audio streaming module, or extended analog audio input module But DSP's slightly complicated tuning interface and strong sound sense require high professionalism, which is a tuning problem for refit shops in China and most of the world. Later, the German company GLADEN came up with a way to combine the principle of DSP and invented the GLADEN Aures binaural in-ear vehicle measurement system. In terms of choosing an on-board DSP, there are generally the following references: 1: Good audio processing system. Like gisen's unique AE intelligent algorithm, it can greatly improve the sound quality clarity, the bass effect is more surging, and it has better high-fidelity stereo while making the use more dynamic. This effect is more obvious. 2: The tuning mode should be diversified. Generally, the on-board DSP tuning is used to adjust the parameters on the machine. Gisen products provide three types of machine parameter adjustment, mobile APP tuning and computer tuning, which are more convenient for customers to use. 3: Try not to change the original car line, because changing the original car line to install a DSP power amplifier will not only take time and effort, but also cause hidden safety hazards to the use of the car. 4: It is best to choose DSP products with over-current protection, so as to avoid damage to the car and DSP amplifier due to improper operation or short circuit.