The speed of floating point DSP is generally lower than the fixed-point DSP processing speed, and its cost and power consumption are higher than that of fixed-point DSP, but because of its adoptionFloating-point data format, so the processing accuracy, dynamic range are much higher than fixed-point DSP, suitable for high operational complexity, high precision requirements of the application mops wireless charging ; Even in general applications, when programming floating point DSP, it is unnecessary to consider the problem of data overflow and insufficient precision, so programming is more convenient and easy than fixed-point DSP.
The emergence of low-voltage DSP requires level conversion in modern electronic systems, especially in the digital signal processor DSP chip design in digital circuits, more and more low-voltage operating devices are used.
mops wireless charging The low voltage you mentioned here is the current development trend of IC, from the previous 5v, to 3v, 7v. It is an objective requirement for the development of portable devices and embedded systems.
For embedded systems, the composition of speech recognition hardware needs to consider many other factors. First, due to cost constraints, fixed-point DSP is generally used, which means that the complexity of the algorithm is limited; Secondly, there are various strict restrictions on productization, which requires a highly integrated hardware DSP, so the most ideal hardware composition isSystem-level chips.
1, RTCA is the abbreviation of English Radio Technical Commission for Aeronautics, and Chinese is called the Aeronautical Radio Commission. RTCA is an American private nonprofit corporation (RTC)An internationally renowned organization operated by A Inc. This paper presents consistent recommendations for communication navigation surveillance and air traffic management (CNS/ATM) systems in the aviation field. The RTCA serves primarily as a federal advisory committee.
2, "It is obviously impossible to test the wide variety of portable devices that currently exist or may be used in the future. - As far as the dedicated electronic flight control and engine control computers on Airbus aircraft are concerned, they are not affected in any way by the electronic devices used by passengers due to the advanced protection features of these systemsNow this problem is specific to navigation and communication receivers and applies to all aircraft.
3, so the United States FAA (Federal Aviation Administration) and RTCA (United States Aviation Radio Technical Committee) began to work together to study this. Unexpectedly, half a century of research has no results... Numerous simulations, both on real flights and in the lab, have never observed significant interference results.
4, Rtca - radio technical mission for aeronautics The civil aeronautics board has grounded the whole fleet. The Civil aeronautics Board has grounded the whole fleet. Nasa national aeronautics and Astronautics The National Aeronautics and space administration.
5. RadioTechnicalCommission for Aeronautics, referred to as RTCA, has successively issued industry standards and proposed technical specifications for aircraft anti-PED electromagnetic interference, which also laid the foundation for further opening up the use of PED on board. As a result, domestic passengers can finally turn on their mobile phones on the plane. In June, the Federal Aviation Administration (FAA) applied to the Space Radio Technical Committee (RTCA), an independent industry standard-setting organization, to investigate the impact of electronic devices on flight. After a study, the Space Radio Technical Committee concluded that electronic devices do not interfere with aircraft navigation, itThey even suggested that the FAA allow laptops, game consoles, and music devices.
The selection parameters of DSP chip according to the different application occasions and design objectives, the focus of the selection of DSP chip is also different, its main parameters include the following aspects: (1) computing speed: First of all, we must determine the digital signal processing algorithm, the algorithm determines the amount of calculation and completion timeSo it's pretty much fixed, based on the arithmetic. And its time requirements can estimate the lower limit of DSP chip computing speed.
Computing speed: First of all, we must determine the digital signal processing algorithm, after the algorithm is determined, the amount of computation and completion time will be roughly determined, according to the amount of computation and its time requirements can be estimated the lower limit of DSP chip computing speed.
For example, the TMS320F28335 DSP, with its rich peripherals, has become a useful assistant for industrial control. When choosing a DSP, it is necessary to consider computing speed, price, hardware resources, development tools and power consumption.