With the widespread popularity of smartphones, users should not only pay attention to the design of mobile phones, but also pay more attention to the hardware configuration performance of mobile phones. The most frequently heard is the word CPU, but often some equally important chips are ignored by people. Today is Let's explain a mysterious and little-known DSP chip.

Although the mobile phone CPU is powerful enough, the number of tasks that the smartphone needs to handle is increasing, which will undoubtedly greatly reduce the fluency of the mobile phone. The addition of a dedicated chip can effectively solve this problem. DSP is such a dedicated chip. . The DSP chip may not be as well known as the CPU, but it does play an important role in the smartphone, which can bring better voice, audio, and image experience, which will definitely improve the ability of the phone to single-function, let the phone run faster. Faster.

DSP is the abbreviation of Digital Signal Processor, which is a digital signal processor, which is a chip that integrates dedicated computing power. DSP digital signal processor designs are used in embedded systems such as mobile base stations, and such applications do not require floating point operations and only require integer operations. However, with the advent of 4G networks, the computing burden of base stations is increasing, and floating-point operations become indispensable.

The world's first single-chip DSP chip should be the S2811 released by AMI in 1978. In 1979, the commercial programmable device 2920 released by Intel Corporation of the United States was a major milestone of the DSP chip. These two chips do not have a single-cycle multiplier that is necessary for modern DSP chips. In 1980, the μPD7720 introduced by NEC Corporation of Japan was the first commercial DSP chip with a multiplier.

After that, the most successful DSP chip is a series of products from Texas Instruments (TI). TI successfully launched its first generation of DSP chips in 1982. Today, TI's range of DSP products has become the most influential DSP chip in the world. TI has also become the world's largest DSP chip supplier and its DSP market. The share accounts for nearly 50% of the world.

DSP voice

The DSP chip was mainly used for the rapid processing of voice calls, ensuring that we did not have any delay in hearing the conversation. Now DSP enhancement capability has brought new breakthroughs. For an easy-to-understand example, Apple Siri is not the interaction between the first person and the mobile phone, but it does drive the intelligent voice interaction between the human and the machine, and then many manufacturers follow up, such as MOTO, ZTE. Etc., the realization of such functions are all done by DSP voice control, which shows how important it is to the mobile phone, but also let us see the powerful capabilities and prospects of speech recognition.

The DSP chip brings the improvement of hardware performance and accelerates the voice response speed of the mobile phone. By relying on the low-power DSP chip, it can realize the voice standby at any time and place and consumes very little power. The ultimate goal of the re-development trend of voice function is to replace the mobile phone keyboard to liberate the hands. Although it is far from meeting everyone's expectations, it can be foreseen that voice interaction in the field of smart wear can not be underestimated, and all this is with our mobile phone. The DSP chips in the process are closely related.

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