在現(xiàn)代通信系統(tǒng)中，電話語音的頻帶被限制在300 Hz～4 kHz的范圍內(nèi)，帶來了語音可懂度和自然度的降低。為了在不增加額外成本的前提下提高語音的可懂度和自然度，進(jìn)行了電話語音頻帶擴(kuò)展的研究。提出了一種改進(jìn)的基于碼本映射的語音帶寬擴(kuò)展算法：在碼本映射的過程中，使用加權(quán)系數(shù)來得到映射碼本?？陀^測試結(jié)果表明，用此算法得到的寬帶語音的譜失真度比用一般的碼本映射降低至少2%。主觀測試結(jié)果表明，用此算法得到的寬帶語音具有更好的可懂度和自然度。
Abstract:
In modern communication systems， the bandwidth of telephone speech is limited from 300Hz to 4 kHz， which reduces the intelligibility and naturalness of speech. Telephone speech bandwidth extension is researched to get wideband speech and to improve its intelligibility and naturalness， without increasing Extra costs. This paper put forward an improved algorithm of speech bandwidth extension based on codebook mapping. In the process of codebook mapping， weighted coefficients were used to get mapping codebook. Objective tests show that spectral distortion of wideband speech obtained by this algorithm reduces at least 2%， comparing to conditional codebook mapping. Subjective tests show that the wideband speech obtained by this algorithm has better intelligibility and naturalness.
ARM下 Implement matrix multiplication of 2 square matrices, with data read from an input file and printed both to the console and to an output file.
• Assume a file with correct data (no garbage, characters, etc.).
• you must check and provide appropriate execution for 2 Extra cases, namely when the matrix size given is either “0” , or when the size is greater than the maximum handled of “5” . In these 2 cases you must implement the following behaviour:
o If size = 0, then print a message “Size = 0 is unacceptable” and continue by reading the
next size for the next 2 matrices (if not end of file).
o If size >5, then print two messages: “Size is too big - unacceptable”. Then read and
discard the next (size2 ) integers and continue by reading the next size for the next 2 matrices (if not end of file).
SharpZipLib之前叫做NZipLib，完全由 C# 開發(fā)的壓縮庫，支持Zip, GZip, Tar and BZip2 ，為2007年8月最新0852release版的源文件和文檔說明！
Changes for v0.85.2 release
Minor tweaks for CF, ZipEntryFactory and ZipFile.
Fix for zip testing and Zip64 local header patching.
FastZip revamped to handle file attributes on Extract + other fixes
Null ref in path filter fixed.
Extra data handling fixes
Revamped build and conditional compilation handling
Many bug fixes for Zip64.
Minor improvements to C# samples.
ZIP-1341 Non ascii zip password handling fix.
ZIP-355 Fix for zip compression problem at low levels
SharpZipLib之前叫做NZipLib，完全由 C# 開發(fā)的壓縮庫，支持Zip, GZip, Tar and BZip2 ，為2007年8月最新0852release版的代碼實(shí)例！
Changes for v0.85.2 release
Minor tweaks for CF, ZipEntryFactory and ZipFile.
Fix for zip testing and Zip64 local header patching.
FastZip revamped to handle file attributes on Extract + other fixes
Null ref in path filter fixed.
Extra data handling fixes
Revamped build and conditional compilation handling
Many bug fixes for Zip64.
Minor improvements to C# samples.
ZIP-1341 Non ascii zip password handling fix.
ZIP-355 Fix for zip compression problem at low levels
upsd_flash.c
These functions are provided to help you develop your initial code.
They are optimized for speed rather that size. As a result, you will
see very few nested function calls. If speed is not critical, you
can use function calls for common tasks (like dat polling after
writing a byte to Flash) The penalty is the Extra processor
time to make the nested calls.
SimpliciTI™ -1.0.3.exe for CC11xx and CC25xx
SimpliciTI is a simple low-power RF network protocol aimed at small (<256) RF networks. Such networks typically contain battery operated devices which require long battery life, low data rate and low duty cycle and have a limited number of nodes talking directly to each other or through an access point or range extenders. Access point and range extenders are not required but provide Extra functionality such as store and forward messages. With SimpliciTI the MCU resource requirements are minimal which results in the low system cost.
SimpliciTI™ -1.0.4.exe for CC2430
SimpliciTI is a simple low-power RF network protocol aimed at small (<256) RF networks. Such networks typically contain battery operated devices which require long battery life, low data rate and low duty cycle and have a limited number of nodes talking directly to each other or through an access point or range extenders. Access point and range extenders are not required but provide Extra functionality such as store and forward messages. With SimpliciTI the MCU resource requirements are minimal which results in the low system cost.
最受歡迎的Joomla社區(qū)用戶管理收費(fèi)插件 - Commnity Builder 1.2 RC2。
Community Builder suite (CB) extends the Joomla! user management system. Key features: Extra fields in profile, enhanced registration workflows, user lists, connection paths between users, admin defined tabs and user profiles, image upload, front-end workflow management, integration with other components, like PMS, Newsletter, Forum, Galleries. Release 1.1 is compatible with all Joomla! 1.0.x (including 1.0.15) and Mambo 4.5.2-4.6.4. New CB version 1.2 RC brings Joomla 1.5 native compatibility (and keeping Joomla 1.0.x and Mambo 4.5.2-4.6.4 native compatibility), multi-criteria user searches, full field controls of core fields, ajax email and username checkers, new lost username/password form and many more features and fixes. Please see announcement on our homepage.
