Unreferenced date July 2009 expert subject Computing date September 2011 Infobox file format name Qualcomm PureVoice icon logo extension .qcp mime audio qcelp type code uniform type magic owner Qualcomm genre container for contained by extended from extended to standard Qualcomm code excited linear prediction QCELP , also known as Qualcomm PureVoice , is a speech codec developed in 1994 by Qualcomm to increase the speech quality of the IS 96A codec earlier used in Code division multiple access CDMA networks. It was later replaced with Enhanced Variable Rate Codec EVRC since it provides better speech quality with fewer bits. The two versions, QCELP8 and QCELP13 , operate at 8 and 13 kilobits per second Kbit s respectively. In CDMA systems, a QCELP vocoder converts a sound signal into a signal transmissible within a circuit. In wired systems, voice signals are generally sampled at 8 kHz that is, 8,000 sample values per second and then encoded by 8 bit Quantization sound processing quantization for each sample value. Such a system transmits at 64 kbit s, an expensive rate in a wireless system. A QCELP vocoder with variable rates can reduce the rate enough to fit a wireless system by Line coding coding the information more efficiently. In particular, it can change its own coding rates based on the speaker s volume or pitch a louder or higher pitched voice requires a higher rate. Compression formats Compression Software Implementations DEFAULTSORT Qcelp Category Speech codecs yo QCELP ... more details
Cleanup rewrite date May 2009 Infobox file format name Scalable Vector Graphics icon logo screenshot caption extension tt .qcp tt mime audio qcelp ref cite web url http tools.ietf.org html rfc3625 title The QCP File Format and Media Types for Speech Data last1 Gellens first1 R. last2 Garudadri first2 H. publisher Internet Engineering Task Force date 2003 09 accessdate 2011 03 01 ref type code uniform type conforms to magic RIFF ... QLCM owner Qualcomm released start date August 1999 ref name rfc2658 cite web url http tools.ietf.org html rfc2658 title MIME Type Registration of RTP Payload Formats author K. McKay publisher Internet Engineering Task Force date 1999 08 accessdate 2011 03 01 ref latest release version latest release date genre audio file format container for QCELP 13K, Enhanced Variable Rate Codec Enhanced Variable Rate Coder EVRC , and Selectable Mode Vocoder SMV contained by extended from Resource Interchange File Format RIFF extended to standard http tools.ietf.org html rfc3625 MIME Type Registration of RTP Payload Formats free ? url URL tools.ietf.org html rfc3625 The QCP file format is used by many cellular telephone manufacturers to provide ring tones and record voice. It is based on RIFF File format RIFF , a generic format for storing chunks of data identified by tags. The QCP format does not specify how voice data in the file is encoded. Rather, it is a Container format digital container format . QCP files are typically encoded QCELP or Enhanced Variable Rate Codec EVRC . Qualcomm, which originated the format, has removed an internal web page link from the page that formerly discussed QCP. Out of an abundance of caution, due to the December 31st, 2007 injunction ordered against certain Qualcomm products, Qualcomm has temporarily removed certain web content until it can be reviewed and modified if necessary to ensure compliance with the injunction. It may be several more days or weeks before these pages are accessible again. Thank you for your pat ... more details
Enhanced Variable Rate CODEC EVRC is a speech codec used in CDMA networks. It was developed in 1995 to replace the QCELP vocoder which used more bandwidth on the carrier s network, thus EVRC s primary goal was to offer the mobile carriers more capacity on their networks while not increasing the amount of bandwidth or wireless spectrum needed. ref http telephonyonline.com wireless mag wireless evrc best worlds EVRC Best of Both Worlds Bot generated title ref EVRC uses RCELP technology, which Qualcomm claims improves speech quality with lower bit rates. Citation needed date May 2008 EVRC compresses each 20 milliseconds of 8000 Hz, 16 bit sampled speech input into output frames of one of three different sizes full rate 171 bits 8.55 kbit s , half rate 80 bits 4.0 kbit s , eighth rate 16 bits 0.8 kbit s . A quarter rate was not included in the original EVRC specification and eventually became part of EVRC B . A zero length frame is included in the specification for null and erasure frames. The eighth 1 8 rate is not intended for speech signals, but instead for background noise. Due to the source controlled nature of the codec the average bit rate varies based on network conditions, but is usually around 6 kbit s. Citation needed date February 2007 EVRC was replaced by SMV which retained the speech quality Citation needed date October 2007 and at the same time improved network capacity. Recently, however, SMV itself has been replaced by the new CDMA2000 4GV codecs. 4GV is the next generation 3GPP2 standards based EVRC B codec. 4GV is designed to allow service providers to dynamically prioritize voice capacity on their network as required. EVRC can be also used in 3GPP2 container file format 3GP 3G2 . External links http www.3gpp2.org public html specs C.S0014 A v1.0 040426.pdf 3GPP2 specification http www.arcx.com sites EVRC.htm EVRC The Savior of CDMA? RFC 4788 Enhancements to RTP Payload Formats for EVRC Family Codecs References reflist Compression Formats Categor ... more details
Infobox Software name RetroCode screenshot logo Image RetroCode WinLinux.gif caption developer Till T nshoff operating system Mac OS X , Microsoft Windows Windows , Linux , Solaris operating system Solaris license GNU General Public License website http sourceforge.net projects retrocode RetroCode is a universal mobile content converter originally created by Retro Ringtones LLC . RetroCode is able to read and write most common sample based ringtone formats including meta data. Overview RetroCode reads and writes many common mobile sample content file formats. RetroCode takes measures for making sure that meta data is maintained and converted between the formats. It features filters for adapting audio content to the abilities of small handheld devices. RetroCode also includes a ringback signal synthesizer allowing to mix audio content with standard ITU ringback signals. Compatibility RetroCode currently supports the following formats class wikitable Format Name Read Decode Write Encode Beatnik RMF uncompressed Beatnik RMF ima adpcm Beatnik RMF mpeg Yamaha MA2 Yamaha MA3 Yamaha MA5 Yamaha MA7 Panasonic MFM Sagem Wave Qualcomm QCELP Qualcomm CMX AMR NB AMR WB MPEG 2 Layer 1,2 and 3 AAC Macromedia Flash AIFF 3GPP MP4 uLaw aLaw Dialogic VOX OGG RealMedia Audio Microsoft WMA Microsoft AVI Microsoft Wave Dependency RetroCode depends on a variety of open source libraries as well as some ISO reference implementations. http id3lib.sourceforge.net id3lib Version 3.8.3 faac http sourceforge.net projects faac faad2 http downloads.sourceforge.net retrocode mp4ff patch by me at mmsguru dot com.patch?use mirror osdn mp4ff part of faad2, patched for 3GPP compatibility http www.zlib.net zlib http www.3gpp.org ftp Specs archive 26 series 26.104 amrnb http www.3gpp.org ftp Specs archive 26 series 26.204 amrwb http lame.sourceforge.net index.php mp3lame http sourceforge.net projects mad mad avformat avcodec http ffmpeg.mplayerhq.hu avutil http www.cdmatech.com products purevoice downloa ... more details
Orphan date September 2011 Refimprove date September 2011 Infobox Mobile phone name Samsung Replenish image imagesize manufacturer Samsung carrier Sprint Nextel Sprint , Boost Mobile released Start date and age 2011 01 successor screen TFT LCD , convert 2.8 in mm abbr on diagonal br 240 x 320 pixel px QVGA, Touchscreen rear camera 2.0 Megapixel MP br 4x digital zoom br Shot Modes Multi br Geo tagging br Editing Modes br Camcorder br Online Image Uploading operatingsystem Android operating system Android 2.3 Gingerbread input Touchscreen Capacitive Capacitive touchscreen br QWERTY keyboard br Accelerometer Consumer electronics Accelerometer cpu 600 MHz Qualcomm MSM76272 ringtone memory 512 MB RAM 512 MB Read only memory ROM ref cite web title Samsung Replenish url http www.phonearena.com phones Samsung Replenish id5329 fullspecs work Phone Arena accessdate 9 February 2012 ref storage memory card 32GB MicroSD networks Code division multiple access CDMA DBTM 1900 MHz SAR Values Head 0.54 W kg, Body Worn 1.09 W kg battery 1600 mAh , 3.7 Volt V br Internal rechargeable battery Rechargeable Li ion Lithium Ion connectivity Bluetooth Profiles A2DP, AVRCP, GAVDP, GOEP, HFP 1.5, HSP, OPP, PBAP, SDAP SDP Wi Fi HotSpot HTML Browser Flash Java GPS size convert 4.84 in mm abbr on H br convert 2.36 in mm abbr on W br convert 0.45 in mm abbr on D form Candybar weight convert 4.1 oz g abbr on media formats Audio Music Player Compatible Music Files AAC, AAC , eAAC , AMR NB, AMR WB,EVRC, MIDI, MP3, OGG,QCELP, WAV, WMA Audio, Streaming MP3 Music Tones br Video Video Player Compatible Video Files H.263, H.264, MPEG4 Video, Streaming other Wi Fi hotspot, USB tethering references URL 1 http www.samsung.com us mobile cell phones SPH M580ZKASPR? 2 Official web site br URL 1 http www.sprint.com landings weboffers replenish.html 2 at Sprint s The Samsung Replenish is an Android operating system Android 2.3 smartphone . ref name android central http www.androidcentral.com samsung replenish rec ... more details
Infobox Mobile phone name HTC Wings image HTC S730.JPG imagesize 180px manufacturer HTC Corporation HTC carrier available 2007 screen 2.4 in, 240x320 pixels px exterior screen ringtone camera 2 Megapixels Back 2nd camera CIF video call Front operatingsystem Windows Mobile 6 Standard input Keypad , extendable QWERTY keyboard cpu Qualcomm MSM7200, 400 MHz processor ringtone Polyphonic, MP3 memory 64 MB Ram and 256MB ROM memory card MicroSD , microSDHC networks HSDPA 3.5G , Quad band GSM General Packet Radio Service GPRS Enhanced Data Rates for GSM Evolution EDGE GSM frequency bands GSM 850 and GSM 1900 GSM 850 , GSM frequency bands GSM 900, GSM 1800 and EGSM EGSM 900 GSM 900 , GSM frequency bands GSM 900, GSM 1800 and EGSM EGSM 900 GSM 1800 , GSM frequency bands GSM 850 and GSM 1900 GSM 1900 battery lithium polymer connectivity USB 2.0, Bluetooth 2.0, Wi Fi b g operatingsystem Microsoft Windows Mobile 6.0 Standard size 105.8x51x19.4 mm form Slider weight 150 g music HTC S730 , also known as HTC Wings is a smartphone from HTC Corporation HTC . The phone is a member of HTC s line with phones equipped with QWERTY keyboards. History The phone was made available during late 2007 . It uses Windows Mobile technology and is powered by Windows Mobile 6 Standard. HTC have used slogans such as Let s get down to business. and Keep in touch no matter where you are in the world. when marketing the device. Properties Keyboard The device has an extendable keyboard qwerty , available in localized versions, which simplifies SMS and smartphone functions. There s also a standard numeric keyboard located under the screen. Multimedia The device can also act as a music player supporting formats such as MP3 , Windows Media Audio WMA , Advanced Audio Coding AAC , AAC , eAAC , WAV , QCELP , MPEG4 , Adaptive multi rate compression AMR NB and AMR WB . Internet The device can be connected to wireless networks using IEEE 802.11 802.11 b g Wireless Local Area Network WLAN , it supports the Sky ... more details
Infobox mobile phone name Motorola Triumph logo just the file name, i.e. example.png logosize include px defaults to 250px if omitted image motorola triumph might land india data imagesize include px defaults to 250px if omitted alt caption brand Motorola Mobility Motorola series carrier Virgin Mobile USA networks 1900 MHz Personal Communications Service PCS CDMA EV DO Rev. A released July 20, 2011 price 299 available United States Start date 2011 07 20 Virgin Mobile USA discontinued End date YYYY MM DD predecessor successor related type Smartphone form Slate size convert 4.80 in mm abbr on H br convert 2.60 in mm abbr on W br convert 0.39 in mm abbr on D weight convert 143 g oz abbr on os Android operating system Android 2.2 Froyo cpu 1 Hertz GHz Qualcomm MSM8655 Snapdragon system on chip Snapdragon gpu memory 512 Megabyte MB RAM storage 2 Gigabyte GB ROM memory card Secure Digital microSD microSD supports up to 32 GB battery Motorola FB 02 3.7V, 1380 mAh br Internal rechargeable battery Rechargeable Li ion br User replaceable input Multi touch Touchscreen Capacitive capacitive touchscreen br A GPS br S GPS br Accelerometer br Microphone br Proximity sensor br Push button s display LCD , convert 4.1 in mm abbr on diagonal 800 480 WVGA ext display rear camera 5.0 megapixel MP with LED flash front camera 640 480 px VGA media formats Audio AMR NB, AMR WB, AMR WB , AAC, AAC , eAAC , WMA, MPEG 1 Audio Layer 3, QCELP br Video HD Video Playback at 720p ringtone All compatible audio formats br Vibration connectivity 3.5 mm TRS connector TRRS br Bluetooth Bluetooth Bluetooth v2.1 EDR 2.1 EDR with Advanced Audio Distribution Profile Advanced Audio Distribution Profile A2DP A2DP br HDMI br Micro USB 2.0 br Wi Fi IEEE 802.11 802.11b g n other sar Head 1.09 W kg br Body 1.19 W kg hac references ref name Motorola2 cite web url http mediacenter.motorola.com Fact Sheets Motorola TRIUMPH Fact Sheet 36f2.aspx title Motorola TRIUMPH Fact S ... more details
Refimprove date December 2007 This table compares features of container format digital container formats . To see which multimedia players support which container format, look at comparison of media players . Information class sortable wikitable border 1 cellpadding 1 cellspacing 0 style font size 85 text align center width auto Name and file extension, if different Proprietor Developer License Support for video compression picture types B frames Variable bit rate audio Variable frame rate Chapters Subtitle captioning Captions Subtitles Video format s supported Audio format s supported Metadata Tag metadata Tag s supported Menu Support like DVD Streaming Media Streaming Support Attachment Support ref name Attachment Note The ability to hold additional files such as fonts for subtitles etc. ref 3D Support codec 3D Support at container level Supported by hardware players 3GP 3GPP dunno yes yes yes dunno partial 3GPP Timed Text partial H.263 , MPEG 4 Part 2 and H.264 MPEG 4 AVC partial Adaptive Multi Rate AMR NB , AMR WB , AMR WB , Advanced Audio Coding AAC , HE AAC and HE AAC v2 dunno no dunno dunno dunno dunno dunno 3GP 3G2 3GPP2 dunno yes yes yes dunno partial 3GPP Timed Text partial H.263 , MPEG 4 Part 2 and H.264 MPEG 4 AVC partial Adaptive Multi Rate AMR NB , AMR WB , Advanced Audio Coding AAC , HE AAC , EVRC , EVRC B , EVRC WB, 13K QCELP , SMV or VMR WB dunno no dunno dunno dunno dunno dunno Advanced Systems Format .asf, .wma, .wmv Microsoft Proprietary, patent encumbered no yes yes yes yes partial Almost anything through Video for Windows VFW or DirectX Media Objects DMO H.264 AVC is problematic partial Almost anything through Audio Compression Manager ACM or DirectX Media Objects DMO Vorbis is problematic yes no yes dunno dunno dunno yes Audio Video Interleave AVI Microsoft ? partial No ref name B frame support B frames are not natively supported so bitstream processing or packing is needed. Details on this can be found in http forum.doom9.org showthread. ... more details
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