digital audio system broadcast multimedia

... plot is original audio): 0 5 10 15 x 10 4 −1 −0.5 0 0.5 1 Original Audio Click on above images or here to hear: original audio, bass shelf filtered audio,treble shelf filtered audio Trang 22Time-varying ... above code is (red plot is original audio): Original AudioClick on images or here to hear: original audio,wah-wah audio Trang 32Delay Based EffectsMany useful audio effects can be implemented using ... University, UK Trang 2Digital Audio EffectsHaving learned to make basic sounds from basic waveforms and more advanced synthesis methods lets see how we can atsome digital audio effects These may

Ngày tải lên: 12/02/2020, 22:09

... thepredicted value More on this later (Audio Compression) CM3106 Chapter 4: Digital Audio Digital Audio Formats 20 Trang 21Common Audio Formats (Cont.)Many formats linked to audio applications Most use ... FrequencyCM3106 Chapter 4: Digital Audio Digital Sampling 8 Trang 9Sampling at Twice Nyquist FrequencyTrang 10Sampling at above Nyquist FrequencyCM3106 Chapter 4: Digital Audio Digital Sampling 10 Trang ... 1.26 Mb 8 Bit Mono 2.52 Mb 1.26 Mb 630 Kb Memory Required for 1 Minute of Digital Audio CM3106 Chapter 4: Digital Audio Digital Sampling 16 Trang 17Practical Implications of Nyquist Sampling TheoryFiltering

Ngày tải lên: 13/02/2020, 01:08

... digital audio originate from the simpler hardware imple-mentations with respect to the required audio performance For example, analog-to-digital (ADC) and digital-to-analog (DAC) conversion systems ... excessive oversampling of the source PCM audio signal, which results to impractical realizations of digital PWM systems In this paper, a description of digital PWM distortion generation mechanism ... sampled pulse width modulation (UPWM) represents a very efficient digital audio coding scheme for digital-to-analog conversion and full-digital amplification, it suffers from strong harmonic distortions,

Ngày tải lên: 22/06/2014, 19:20

... decryption subsystem becomes (7 i =0RotateX i p,r)· (7 j =0RotateY j q,s) Combining the encryption subsystem and decryption subsystem, the block diagram of the proposed signal secu-rity system is ... with commercial multimedia storage and transmission applications We have performed Matlab simulation to verify the functional correctness of the proposed system In implementing the system, a low-cost ... Trang 1Design and Realization of a New Signal Security System for Multimedia Data Transmission Hun-Chen Chen Department of Electronics Engineering, National

Ngày tải lên: 23/06/2014, 01:20

... Hình 6.2 Trạm multimedia gia đình Trang 6b Công nghệ multimedia:Truyền thông multimedia được thực hiện nhờ các công nghệ sau: 1 Sơ hóa hình ảnh và âm thanh (video/ audio) 2 Nén video/ audio  tăng ... tương tác DVI (Digital video interactive)  Công nghệ multimedia: DVI (Intel), xử lý video tốc độ cao và phần mềm, dùng cho Multimedia Computer Trang 146.3 Phần mềm Multimedia:1 Multimedia Toolbox: ... thực hiện nhiều chức năng Multimedia (nén, lưu trữ, hiển thị file (audio), video) 3 Authoring software (phần mềm tác giả) 4 Animation software (hoạt hình) 6.4 Kết nối multimedia:  Mạng truyền

Ngày tải lên: 22/07/2014, 05:21

... đổi tần số dịch tần dao động Video audio Trang 294.4 Máy thu DVB-T:1 Dòng truyền tải TS (MPEG-TS) bao gồm: a Tín hiệu video: MPEG-2-4:2:0 MP@ ML b Tín hiệu audio: MPEG-2 layer II Dòng MPEG-TS ... COFDM Chèn dữ liệu trong Chèn dữ liệu ngoài l=12 Mã ngoài R-S (204, 188) M U X M U X M U X Video Audio Data Program 1 Program 2 SI Bộ tương thích đầu ra Bộ tương thích kênh (tối ưu hóa kênh) Trang ... (36Mhz/ kênh), công suất hạn chế + QPSK (Q-Quatery/ Quadrarure), đơn sóng mang: Dữ liệu (video/ audio) dưới dạng gói có độ dài cố định trong dòng truyền tải MPEG-2  Phân bố năng lượng  R-S (mã

Ngày tải lên: 22/07/2014, 05:21

... kHz).° Đồng bộ audio số: a) Giữa các audio số: cân chỉnh thời gian các block, cân chỉnh frame tín hiệu (đồng bộ pha) b) Giữa các audio số và video số: 1 video frame: 33.366,67 µs 1 audio frame: ... oversampling (fs cao) t giá trị hold audio Hình 2.17 Trang 30° Sẽ cắt, nếu tín hiệu audio vượt quá khoảng lượng tử.° Sai số lượng tử phụ thuộc vào tín hiệu audio (ví dụ cĩ nhiễu trong tín hiệu) ... Kênh A Y Kênh B1 block = 192 frames Hình 2.19 Cấu trúc audio số Trang 36° 4 bit liên hợp trong subframe:1 bit V: bit V = 0, nếu dữ liệu từ mã audio Trang 37b) Máy thu: đầu ra cân bằng, ổ cắm XLR,

Ngày tải lên: 22/07/2014, 05:21

... Trang 1Digital Business SystemTrang 2Panasonic m m - -mama Digital Business System DES 824 Release Notes CPC-S/M Version 2.0 Document Number ... new features won’t be supported Figure 1 44-Series Small-Display Phone 24 Tue NOV 14 ] O+ DIGITAL BUSINESS SYSTEM Trang 7DBS Release Notes PanasomcOTable 2 Key to 44-Series Small-D&splay Phone ... can choose which device will rmg by going off-hook at either the digital keytelephone or the analog device and dialing “71 The digital key telephone displaywill reflect “Analog port RING” or “Key

Ngày tải lên: 14/08/2014, 22:20

... restriction No of stations in the system No of personal speed dial numbers No of system speed dial numbers No of digits per speed dial number (personal and system) Trunk Queuing No of trunk queuing ... (UNA Device) l The CPC-S does not have a UNA relay or separate ER audio aoutput If UNA is used with a CPC-S, the UNA external ringer audio output must be directed out at the EPA connector It is recommended ... using a separate amplifier device from the paging system, connect CN7 “ER” connector to the amplifier If using the same amplifier device as thepaging system connect to the EPA connector Figure 5 17

Ngày tải lên: 14/08/2014, 22:20

... used for non-appearing trunk calls l=System Hold is used for non-appearing trunk calls Applicable Phone Types This feature applies to both single-line and digital telephones Number of Trunks That ... be assigned is limited by the number of available extension porrs in your DBS 824 system This depends on your system’s configuration l CPC-S (or CPC M) with one 208 EXP Card supports 16 extensions ... (ExtPort)# lo# Page Group Extensions FF3 (ExtPort)# 18# thru 2% (0 01 l># Trang 21System Installation Area Code !=FlSystem Installation Area Code Software Version WC-S and CPC-M, Version 1 0 and

Ngày tải lên: 14/08/2014, 22:20

... bytes This is the maximum amount of data that the system can hold while the device is emptying its buffer Trang 2FFl Automatic Night 1 Mode Start TimeSystem Timers Automatic Night 1 Mode Start Time ... codes, Personal Speed Dial numbers or System Speed Dial numbers, they can insert pause(s) in thesenumbers (by pressing the REDIAL key for each pause) so the system willdial the numbers correctly ... Expansion Card (Part No VB-4265 1)Phone Z)pe Rest&ion The FL,ASH key function applies only to digitaland digital single-line telephones Trunk Type Resfricfion This timer only applies to loop-start

Ngày tải lên: 14/08/2014, 22:20

... configuration is “Auto’ , the system defaults to the phone type plugged into that port Manual or Auto 22-button key phone34-button key phoneReserved for future useDigital single-line telephone ... dial tone generated by the DBS 824 but the systemwill not access an outside line until the caller dials an area code and officecode, after which the system selects the least expensive trunk ) ... isinoperative until an extension number is reassigned to it and the phone isunplugged from the system, then plugged back in Re-Assigning An Extension Number An extension number can be changedwithout

Ngày tải lên: 14/08/2014, 22:20

... nameFF6 I# (l-16 or 1;24)# CONF ON/OFF tExtension Port CPC-S 1-16 CPC-M l-24 Trang 15FF6 System Speed Dial NamesSystem Speed Dial Names Software Version CPCS and CPC-M, Version 1 0 and higher Address ... is dialed, the system firstchecks arealofice code combinations entered in the “Special Area Code/ Office Code Tables” (FF7 # and 5#) If it doesn’t find any restrictions there,the system then checks ... codes assigned to TRS types 2-6 as a group (FF7 l# 21#) if the system is programmed to use the new NANP dialingplan If not (or if the system doesn’t find a match), it then checks theindividual area

Ngày tải lên: 14/08/2014, 22:20

... Stop bit length (maintenance port) 1 74 Stop bit length (SMDR) 1-47 System speed dial names 6-5 System speed dial numbers 10-3 System speed dial ranges 10-3 T Terminal programming B-l Terminal ... as needed by certified DBS Dealers and TechniciansSection 1 - System Settings (FFl) Table 1: System Parameters (Part I) General System Settings (FFl2f l#) Call Duration Display Not Displayed ... 1-115 Dialing plan switch 7-11 Digital SLT receiving volume 3-44 Directory of extensions Display 3-38 EM/24 port assignment 3 6 Entering programming Intro-6 EPI audio control 1-42Equal access

Ngày tải lên: 14/08/2014, 22:20

... Trang 1Chapter 1 System FeaturesThis chapter contains detailed descriptions of DBS 824 System FeaturesSystem Features are either available on a system-wide basis or aid in theoverall ... Programming l FFl (System) Automatic Day Mode Start Time l FFl (System) Automatic Night Mode Start Time l FFl (System) Automatic Night2 Mode Start Time Trang 8Auto Set Relocation System Featuresl ... telephone number Related Programming l FFl (System) Direct Inward System Access @ISA) Call ID Code F’Fl (System) DISA Outbound Call ID Code 1 l FFl (System) DISA Outbound Call ID Code 2 l FF2

Ngày tải lên: 14/08/2014, 22:20

... DialRelated Programming l FFl (System) Auto-Repeat Dialing Count l FFl (System) Wait Timer for Auto-Repeat Dialing l FFl (System) Busy Tone Detection Timer l FFl (System) Dial Tone Detection Timer ... Programming l FFl (System) Attendant Hold Recall Timer for CO Calls l FFl (System) Attendant Hold Recall Timer for Intercom Calls l FFl (System) Extension Hold Recall Timer for CO Calls l FFl (System) Extension ... Programming l FFl (System) Attendant Hold Recall Timer for CO Calls l FFl (System) Attendant Hold Recall Timer for Intercom Calls l FFl (System) Extension Hold Recall Timer for CO Calls l FFl (System) Extension

Ngày tải lên: 14/08/2014, 22:20

... Programming l FFl (System) Non-appearing Central Office Line Hold l FFl (System) Recall Timer for Extension-Held Intercom Calls l FFl (System) Recall Timer for Extension-Held CO Calls l FFl (System) Trunk ... Press “0 ” Related Programming l FFl (System) Second Attendant Position l FFl (System) Third Attendant Position l FFl (System) Fourth Attendant Position l FFl (System) Attendant Transfer Extension ... on the display when you use System Speed Dialcodes (00-89 or 000-199), your extension is not programmed to displaythat data l The system can be programmed to allow System Speed Dial Numbers tooverride

Ngày tải lên: 14/08/2014, 22:20

... Nhúng - Embedded Systems (W 2008) 13 Vẽ mạch Trang 14 NOR (NOT-OR) XOR (eXclusive OR) (xy)’ = x’ + y’ (x + y)’ = x’ y’ x  y = x’y + xy’ Trang 15NNTu Hệ Thống Nhúng - Embedded Systems Trang 16 ... (xy)’)’ = xy Trang 17NNTu Hệ Thống Nhúng - Embedded Systems (W 2008) 17 NAND Trang 18Chuyển sang mạch NANDTrang 19NNTu Hệ Thống Nhúng - Embedded Systems (W 2008) 19 NAND Trang 20Bài tập  Cho các

Ngày tải lên: 19/06/2018, 14:19

... sufficiently functional system was developed In the following section, we introduce our system in detail Outdoor Indoor TV PC & Web Mobile Digital Signage Trang 53 Our system Many digital signage ... briefly review the concept of digital signage 2 Overview of digital signage In recent years, digital signage has progressed rapidly Unlike a conventional static signboard, digital signage can display ... and use of a digital signage system for revitalizing regional shopping districts Knowledge Management & E-Learning, 6(4), 426–439. Trang 2Development and use of a digital signage system for

Ngày tải lên: 10/01/2020, 11:20

... 1Module 01Analog and Digital Audio In this module you will learn about the nature of sound, soundproofing, acoustics and acoustic treatment, analog audio electronics and digital audio Learning outcomes ... 2Real world components 32Resistors in series and parallel 33 Digital versus analog 34 Analog to digital conversion 36 Problems in digital systems 38 Trang 3The Nature of SoundWe all know the experience ... of An audio cable is a dimensional medium Trang 12one-a room with complete precision, one-accounting for every reflection It would rarely happen that the electrical components of a sound system

Ngày tải lên: 11/06/2020, 15:37