A few short years ago, the applications for video were somewhat confined—analog was used for broadcast and cable television, VCRs, set-top boxes, televisions and camcorders. Since then, there has been a tremendous and rapid conversion to digital video, mostly based on the MPEG-2 video compression standard. Today, in addition to the legacy DV, MPEG-1 and MPEG-2 audio and video com- pression standards, there are three new high- performance video compression standards. These new video codecs offer much higher video compression for a given level of video quality.
标签： applications for confined somewhat
上传时间： 2016-10-29
上传用户：bjgaofei
This document describes how to switch to and program the unisersal serial bus (USB) analog phase-locked loop (APLL) on the C5506/C5507/C5509A devices. Example assembly programs for programming and switching to and from the APLL are also provided in the attached zip file. It is assumed that the reader is familiar with the use and operation of the C5506/C5507/C5509A USB digital phase-locked loop (DPLL) and C55x™ Digital Signal Processor (DSP) IDLE procedures.
标签： describes unisersal document phase-lo
上传时间： 2014-01-13
上传用户：hustfanenze
this is a digital intercom projects using ADC PWM and UART interrupt. you take the value from mic enter it to ADC and then send serially to the other microcontroller which receives the data and transform the digital data into analog data by PWM which is connected to speaker
标签： interrupt intercom projects digital
上传时间： 2017-04-19
上传用户：亚亚娟娟123
This article covers many of the fundamentals of analog video. Video is defined for our purposes here as "moving pictures." Still imaging, like what is found in digital still cameras or scanners, is not covered. The requirements for still imaging do have a lot in common with those for video, but the differences are significant enough to be dealt with as a separate discipline.
标签： fundamentals purposes article defined
上传时间： 2013-12-17
上传用户：黑漆漆
In C Algorithms for Real-Time DSP, author Paul M. Embree presents a complete guide to digital signal processing techniques in the C programming language. This book is structured in such a way that it will be most useful to the engineer who is familiar with DSP and the C language, but who is not necessarily an expert in both. All of the example programs in this book have been tested using standard C compilers in the UNIX and MS-DOS programming environments. In addition, the examples have been compiled using the real-time programing tools of specific real-time embedded DSP microprocessors (Analog Devices ADSP-21020 and ADSP-21062 Texas Instruments TMS320C30 and TMS320C40 and AT&T DSP32C) and then tested with real-time hardware using real-world signals.
标签： M. Algorithms Real-Time complete
上传时间： 2014-01-07
上传用户：epson850
Digital Modulation Techniques are those echniques through which we convert digital signals into analog signal which can be transmitted through transmission medium...this program demostrate some of the basics techniques
标签： Modulation Techniques echniques Digital
上传时间： 2013-12-23
上传用户：wyc199288
Fortran - Tóm tắ t nộ i dung mô n họ c Các khái niệ m và yế u tố trong ngô n ngữ lậ p trình FORTRAN. Các câ u lệ nh củ a ngô n ngữ FORTRAN. Cơ bả n về chư ơ ng chư ơ ng dị ch và mô i trư ờ ng lậ p trình DIGITAL Visual Fortran. Viế t và chạ y các chư ơ ng trình cho các bài toán đ ơ n giả n bằ ng ngô n ngữ FORTRAN.
上传时间： 2013-12-25
上传用户：songrui
Commercially available active noise control headphones rely on fixed analog controllers to drive "anti-noise" loudspeakers. Our design uses an adaptive controller to optimally cancel unwanted acoustic noise. This headphone would be particularly useful for workers who operate or work near heavy machinery and engines because the noise is selectively eliminated. Desired sounds, such as speech and warning signals, are left to be heard clearly. The adaptive control algorithm is implemented on a Texas Instruments (TI™ ) 1 TMS320C30GEL digital signal processor (DSP), which drives a Sony CD550 headphone/microphone system. Our experiments indicate that adaptive noise control results in a dramatic improvement in performance over fixed noise control. This improvement is due to the availability of high-performance programmable DSPs and the self-optimizing and tracking capabilities of the adaptive controller in response to the surrounding noise.
标签： Commercially controllers headphones available
上传时间： 2013-12-04
上传用户：dyctj
Use the on-board potentiometer to simulate an analog input,this input converted into a meaningful digital value in a microcontroller register, and use a group of LED to display this value.
标签： input potentiometer meaningful converted
上传时间： 2017-09-25
上传用户：iswlkje
•ARINC429总线协议是美国航空电子工程委员会(Airlines Engineering Committee)于1977年7月提出的，并于同年发表并获得批准使用，它的全称是数字式信息传输系统(Digital Information Transmission System ) 。协议标准规定了航空电子设备及有关系统间的数字信息传输要求。ARINC429广泛应用在先进的民航客机中，如B-737、B-757、B-767，俄制军用飞机也选用了类似的技术。
标签： ARINC429 总线
上传时间： 2015-03-25
上传用户：423619775
