Please enter a valid full or partial manufacturer part number with a minimum of 3 letters or numbers

    CODE FOR DSP BASED SYSTEM ECHO CANCELLATION USING C2000 Search Results

    CODE FOR DSP BASED SYSTEM ECHO CANCELLATION USING C2000 Result Highlights (5)

    Part ECAD Model Manufacturer Description Download Buy
    TMPM3HMFYAFG Toshiba Electronic Devices & Storage Corporation Arm Cortex-M3 Core Based Microcontroller/32bit/P-LQFP80-1212-0.50-003 Visit Toshiba Electronic Devices & Storage Corporation
    TMPM3HPFYADFG Toshiba Electronic Devices & Storage Corporation Arm Cortex-M3 Core Based Microcontroller/32bit/P-LQFP128-1420-0.50-001 Visit Toshiba Electronic Devices & Storage Corporation
    TMPM3HLFYAUG Toshiba Electronic Devices & Storage Corporation Arm Cortex-M3 Core Based Microcontroller/32bit/P-LQFP64-1010-0.50-003 Visit Toshiba Electronic Devices & Storage Corporation
    TMPM3HNFZAFG Toshiba Electronic Devices & Storage Corporation Arm Cortex-M3 Core Based Microcontroller/32bit/P-LQFP100-1414-0.50-002 Visit Toshiba Electronic Devices & Storage Corporation
    TMPM3HLFZAUG Toshiba Electronic Devices & Storage Corporation Arm Cortex-M3 Core Based Microcontroller/32bit/P-LQFP64-1010-0.50-003 Visit Toshiba Electronic Devices & Storage Corporation

    CODE FOR DSP BASED SYSTEM ECHO CANCELLATION USING C2000 Datasheets Context Search

    Catalog Datasheet MFG & Type Document Tags PDF

    IESS-308 standard

    Abstract: ASK Modulation by matlab book fm transmitter and receiver matlab TMS320 underwater modem vocoder gsm vselp matlab hema ta2 tms5700x aplications of text to speech tms320c500 TMS320C5000
    Text: T H E W O R L D L E A D E R I N D S P S O L U T I O N S TI DSP THIRD-PARTY A P P L I C AT I O N S O F T W A R E G U I D E TMS320 Third-Party Application Software Guide IMPORTANT NOTICE Important Notice Texas Instruments TI reserves the right to make changes to its products or to discontinue


    Original     		TMS320 32bis TMS320C2000 IESS-308 standard ASK Modulation by matlab book fm transmitter and receiver matlab TMS320 underwater modem vocoder gsm vselp matlab hema ta2 tms5700x aplications of text to speech tms320c500 TMS320C5000 PDF

    TMS320C6713 simulink

    Abstract: F28335 with MATLAB voice recognition matlab simulink space vector modulation F28335 GSM 900 simulink matlab TMS320C5510 MATLAB RTDX simulink example TMS320C67XX* internal architecture GMSK simulink electronic stethoscope circuit diagram
    Text: Official Sponsor Purchasing guides for the electronics industry Embedded Processing & DSP Resource Guide 2010 Edition Digital Signal Processors Development Tools Digital Media Processors Embedded Software Application Processors End-Equipment Solutions Microcontrollers


    Original     		XDS560R, XDS510USB XDS510 XDS510PP C2000 TMS320C6713 simulink F28335 with MATLAB voice recognition matlab simulink space vector modulation F28335 GSM 900 simulink matlab TMS320C5510 MATLAB RTDX simulink example TMS320C67XX* internal architecture GMSK simulink electronic stethoscope circuit diagram PDF

    bldc motor control source code for TMS320

    Abstract: instruction set of TMS320c24x DSP PROCESSOR miniprojects using microcontrollers and adc TMS320C549 TMS320C27 sprn095 tms320c2000 C6000 TLV320AC36 TMS320C6000
    Text: T H E W O R L D L E A D E R I N D S P S O L U T I O N S signal processing details on inside J U L Y 1 9 9 8 • I S S U E 5 2 ’C62x EVM cuts 2 development time ’C54x reference board 5 design helps pack more density in designs ’C/’LC206 hits power/price


    Original     		LC206 TMS320C67x TMS320C62x C5410 SPRN095 bldc motor control source code for TMS320 instruction set of TMS320c24x DSP PROCESSOR miniprojects using microcontrollers and adc TMS320C549 TMS320C27 sprn095 tms320c2000 C6000 TLV320AC36 TMS320C6000 PDF

    space-vector PWM using TMS320 F2812

    Abstract: coding for echo cancellation using TMS320C5416 SPRC081 tutorial TMS320f2812 pwm vector SPRC080 sample programs using C in TMS320C6713 DSK TMS320C5416 DSP sample programs using C in TMS320VC5510 DSK G-722.2 matlab fingerprint sensor specifications FPC1031
    Text: R E A L W O R L D S I G N A L P R O C E S S I N G TM DSP Selection Guide Digital Signal Processors, OMAPTM Processors, System Solutions, Development Tools 4Q 2004 ➔ Inside System Solutions 2 TMS320C2000 DSP Platform 20 TMS320C5000™ DSP Platform 27 TMS320C6000™ DSP Platform


    Original     		TMS320C2000TM TMS320C5000TM TMS320C6000TM TMS320TM space-vector PWM using TMS320 F2812 coding for echo cancellation using TMS320C5416 SPRC081 tutorial TMS320f2812 pwm vector SPRC080 sample programs using C in TMS320C6713 DSK TMS320C5416 DSP sample programs using C in TMS320VC5510 DSK G-722.2 matlab fingerprint sensor specifications FPC1031 PDF

    MODEM STU SIEMENS

    Abstract: SPRC081 GSM 900 simulink matlab FPC1010 TMS320C6713 image compression G-722.2 matlab SPRC080 tutorial TMS320f2812 pwm vector TMS320C5510 MATLAB VOICE RECOGNITION for security system using matlab
    Text: R E A L W O R L D S I G N A L P R O C E S S I N G TM DSP Selection Guide Digital Signal Processors, OMAPTM Processors, System Solutions, Development Tools 4Q 2004 ➔ Inside System Solutions 2 TMS320C2000 DSP Platform 20 TMS320C5000™ DSP Platform 27 TMS320C6000™ DSP Platform


    Original     		TMS320C2000TM TMS320C5000TM TMS320C6000TM TMS320TM SSDV004O MODEM STU SIEMENS SPRC081 GSM 900 simulink matlab FPC1010 TMS320C6713 image compression G-722.2 matlab SPRC080 tutorial TMS320f2812 pwm vector TMS320C5510 MATLAB VOICE RECOGNITION for security system using matlab PDF

    MODEM STU SIEMENS

    Abstract: TMS320C5416 echo cancellation SPRC080 TMS320C6713 DSK tutorial TMS320f2812 pwm vector microcontroller based GPRS IP Modem projects data sheet c2810 TMS320C5509A datasheet mp3 player circuit diagram by using msp430 schematic diagram of bluetooth headphone
    Text: R E A L W O R L D S I G N A L P R O C E S S I N G TM DSP Selection Guide Digital Signal Processors, OMAPTM Processors, System Solutions, Development Tools 4Q 2004 ➔ Inside System Solutions 2 TMS320C2000 DSP Platform 20 TMS320C5000™ DSP Platform 27 TMS320C6000™ DSP Platform


    Original     		TMS320C2000TM TMS320C5000TM TMS320C6000TM TMS320TM SSDV004O MODEM STU SIEMENS TMS320C5416 echo cancellation SPRC080 TMS320C6713 DSK tutorial TMS320f2812 pwm vector microcontroller based GPRS IP Modem projects data sheet c2810 TMS320C5509A datasheet mp3 player circuit diagram by using msp430 schematic diagram of bluetooth headphone PDF

    Single-Phase power monitor with two-level control

    Abstract: TMS320f2812 pwm vector code source motorola vip 1853 tutorial TMS320f2812 pwm vector Block Diagram of Trapezoidal Controller for BLDC PIC Microcontroller GSM Modem TMS320C6711 DSK application sample programs using C in TMS320C6713 DSK LMS adaptive filter simulink model TMS320C6713 DSK kit diagram
    Text: R E A L W O R L D S I G N A L P TM R O C E S S I N G DSP SELECTION GUIDE Digital Signal Processors • System Solutions • Development Tools 4Q 2003 INSIDE System Solutions 4 TMS320C6000 DSP Platform 8 TMS320C5000™ DSP Platform 17 TMS320C2000™ DSP Platform


    Original     		TMS320C6000TM TMS320C5000TM TMS320C2000TM TMS320C64xTM TMS320C62xTM, TMS320C67xTM Single-Phase power monitor with two-level control TMS320f2812 pwm vector code source motorola vip 1853 tutorial TMS320f2812 pwm vector Block Diagram of Trapezoidal Controller for BLDC PIC Microcontroller GSM Modem TMS320C6711 DSK application sample programs using C in TMS320C6713 DSK LMS adaptive filter simulink model TMS320C6713 DSK kit diagram PDF

    TNETV3010

    Abstract: QFN-88 TNETV3020 hp laptop display LVDS connector pins datasheet AVC fans 1G wireless communication and analysis LTE repeater ICS Interference matlab rake receiver mrc TMS320TCI6488 hp laptop display LVDS video input pin diagram
    Text: Communications Infrastructure Guide Amplifiers Data Converters Digital Signal Processors Interface Logic Power Management 1Q 2008 Communications Infrastructure Solutions Guide 2 ➔ Table of Contents Carrier Infrastructure 4 TI Worldwide Technical Support


    Original     		TNETV3010, TNETV3020 TMS320DM6467 TNETV3010 QFN-88 TNETV3020 hp laptop display LVDS connector pins datasheet AVC fans 1G wireless communication and analysis LTE repeater ICS Interference matlab rake receiver mrc TMS320TCI6488 hp laptop display LVDS video input pin diagram PDF

    saf7730

    Abstract: saf7730 audio wind energy simulink matlab turbo codes matlab simulation program Philips SAF7730 64 point FFT radix-4 VHDL documentation CW4512 DMC550 SP1403 saf77
    Text: THE LIST OF RESOURCES SUPPORTING DIGITALSIGNAL PROCESSING CONTINUES TO EXPAND. CHECK OUT THE LATEST ADDITIONS. By Robert Cravotta, Technical Editor www.edn.com Welcome to the 2004 edition of the EDN DSP directory. Despite some companies dropping out of the DSP market, whether due to


    Original     		PDF

    saf7730

    Abstract: Philips SAF7730 TMS320DM310 saf77 full 18*16 barrel shifter design ADSP-215xx saf7730 audio TMS320DSC25 compare adsp 21xx with conventional processor compression pcm matlab
    Text: EDN's 2003 DSP directory DSP shipments were tracking at 5% growth for 2002 until shipments in December ballooned. According to market-research company Forward Concepts www.forwardconcepts.com , this balloon in shipments netted an overall DSP-revenue growth of 14.1% for 2002. Wireless applications,


    Original     		1-800-477-8924-x4500 saf7730 Philips SAF7730 TMS320DM310 saf77 full 18*16 barrel shifter design ADSP-215xx saf7730 audio TMS320DSC25 compare adsp 21xx with conventional processor compression pcm matlab PDF

    multimedia projects based on matlab

    Abstract: G.728 vocoder implement matlab wireless speed control of single phase induction Implementation of G.729 on TMS320C54x tms320 modulation projects RTDX TMS320C27 DSP TMS320F240 Fast Fourier Transform FFT C240 C549
    Text: T H E W O R L D L E A D E R I N D S P S O L U T I O N S signal processing details on inside A P R I L 1 9 9 8 • I S S U E 5 1 ’C27x revolutionizes DSP and MCU technologies 2 TI celebrates 10 years of floating-point 4 processors Challenge winners to be


    Original     		C2000 TMS320C2000 x3543. SPRN094 multimedia projects based on matlab G.728 vocoder implement matlab wireless speed control of single phase induction Implementation of G.729 on TMS320C54x tms320 modulation projects RTDX TMS320C27 DSP TMS320F240 Fast Fourier Transform FFT C240 C549 PDF

    tms320c6713 camera interfacing

    Abstract: TMS320C5416 echo cancellation TMS320C6713 DSK image processing kit diagram tms320c5416 architecture diagram TMDS320006711 TMS320C6713-150 TMS320C6713 simulink GSM 900 simulink matlab TMS320C67x DSK manual TMS320C6713 DSK video processing kit diagram
    Text: R E A L W O R L D S I G N A L P R O C E S S I N G DSP Selection Guide 2/02 Table of Contents Worldwide Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ii Introduction to TI DSPs


    Original     		PDF

    BUTTERFLY DSP

    Abstract: Architecture of TMS320C4X FLOATING POINT PROCESSOR arm piccolo BDSP9124 DSP16xx 32 bit barrel shifter vhdl space-vector PWM by using VHDL TMS32C50 vhdl code for Circular convolution verilog code for 2D linear convolution
    Text: coverstory By Markus Levy, Technical Editor Photo courtesy Philips Semiconductors 1999 DSP-architecture directory 66 edn | April 15, 1999 www.ednmag.com THE EXPLOSIVE GROWTH OF DSP-BASED APPLICATIONS CONTINUES TO FUEL AN UNPRECEDENTED DEMAND FOR NEW DSP TECHNOLOGY. FOLLOWING THE TRADITION OF MANY YEARS PAST,


    Original     		TMS320C4x; 64-bit-wide 64-bit 64-bit BUTTERFLY DSP Architecture of TMS320C4X FLOATING POINT PROCESSOR arm piccolo BDSP9124 DSP16xx 32 bit barrel shifter vhdl space-vector PWM by using VHDL TMS32C50 vhdl code for Circular convolution verilog code for 2D linear convolution PDF

    ic vertical la 78141

    Abstract: LA 78141 VERTICAL LA 78141 la 78141 equivalent IC LA 78141 data sheet la 78141 LA 78141 tv application circuit LA 78141 data IC LA 78141 schematic prepaid energy meter block diagram
    Text: TMS320 DSP Development Support Reference Guide Literature Number: SPRU011F May 1998 Printed on Recycled Paper IMPORTANT NOTICE Texas Instruments TI reserves the right to make changes to its products or to discontinue any semiconductor product or service without notice, and advises its customers to obtain the latest


    Original     		TMS320 SPRU011F Index-12 XDS510 TMS320C40 ic vertical la 78141 LA 78141 VERTICAL LA 78141 la 78141 equivalent IC LA 78141 data sheet la 78141 LA 78141 tv application circuit LA 78141 data IC LA 78141 schematic prepaid energy meter block diagram PDF

    Creative 2.1 subwoofer circuit diagram

    Abstract: Free Creative subwoofer circuit diagrams china portables DVD player circuit diagram TNETD4200 ELECTRONIC circuit diagram of digital hearing aid Hearing Aid ARM processor based Circuit Diagram DC-DC CONVERTER china portable DVD circuit diagram 0421K Regulated Charge Pump for portable dvd china TNETD4020
    Text: T H E W O R L D L E A D E R I N D S P inside A N D A N A L O G VOL. 1 • SEPT./OCT. 1999 Updated N E W T E C H N I C A L I N F O R M A T I O N O N T I ’ S D S P, A N A L O G A N D L O G I C D E V I C E S Free Analog & Mixed-Signal Designer’s Guide New DSP software environment


    Original     		TMS320, SSFN031 Creative 2.1 subwoofer circuit diagram Free Creative subwoofer circuit diagrams china portables DVD player circuit diagram TNETD4200 ELECTRONIC circuit diagram of digital hearing aid Hearing Aid ARM processor based Circuit Diagram DC-DC CONVERTER china portable DVD circuit diagram 0421K Regulated Charge Pump for portable dvd china TNETD4020 PDF

    china nobel tv diagram

    Abstract: 4kw sine wave inverter circuit diagram ivory 21 colour television schematics PLC projects smart home DS1102 DSP Controller Board intel 945 motherboard schematic diagram sdk audio amplifier 4141 ecu repair TMS320C40 dallas semiconductor IC DS 1242
    Text: T H E W O R L D L E A D E R I N D S P S O L U T I O N S TI DSP THIRD-PARTY DEVELOPMENT SUPPORT GUIDE TMS320 Third-Party Development Support Guide IMPORTANT NOTICE Important Notice Texas Instruments TI reserves the right to make changes to its products or to discontinue


    Original     		TMS320 CEX-32386-0 china nobel tv diagram 4kw sine wave inverter circuit diagram ivory 21 colour television schematics PLC projects smart home DS1102 DSP Controller Board intel 945 motherboard schematic diagram sdk audio amplifier 4141 ecu repair TMS320C40 dallas semiconductor IC DS 1242 PDF

    ADSP-215xx

    Abstract: TMS320DA250 addressing modes of adsp 21xx processors vhdl code for systolic iir filter TMS320DRE200 tms320f2812 addressing modes adsp215xx TMS320C4X ARCHITECTURE, ADDRESSING MODES TMS320DSC21 verilog code for speech recognition
    Text: 2002 DSP directory Image by Mike O’Leary MARKET ANALYSIS FORECASTS DSP SALES TO TURN UPWARD IN 2002, WITH ISUPPLI PREDICTING A 4% RISE AND FORWARD CONCEPTS EXPECTING A 32% GAIN. By Robert Cravotta, Technical Editor www.ednmag.com LAST YEAR WAS A HARSH ONE for


    Original     		32-bit, 24-bit, 16-bit, LMS24 LMS16 ADSP-215xx TMS320DA250 addressing modes of adsp 21xx processors vhdl code for systolic iir filter TMS320DRE200 tms320f2812 addressing modes adsp215xx TMS320C4X ARCHITECTURE, ADDRESSING MODES TMS320DSC21 verilog code for speech recognition PDF

    verilog code for 32 BIT ALU implementation

    Abstract: vhdl code 16 bit processor verilog code 16 bit processor verilog code for barrel shifter vhdl code for 8 bit barrel shifter 16 bit multiplier VERILOG Architecture of TMS320C4X FLOATING POINT PROCESSOR instruction set of TMS320C5x dsp processor Architecture of TMS320C54X addressing modes in adsp-21xx
    Text: EDN 2000 EDN’S ANNUAL DSP DIRECTORY HIGHLIGHTS THE ARCHITECTURES AVAILABLE FOR YOUR HOTTEST DESIGNS. HERE’S HELP IN SORTING THROUGH THE MYRIAD DSP DEVICES. YOU CAN ALSO ACCESS OUR FREQUENTLY UPDATED, FEATURE-TUNED DATABASE USING OUR SEARCH ENGINE TO FIND THE RIGHT DEVICE FOR YOUR DESIGN NEEDS.


    Original     		X3J16/95-0029 NM6403 verilog code for 32 BIT ALU implementation vhdl code 16 bit processor verilog code 16 bit processor verilog code for barrel shifter vhdl code for 8 bit barrel shifter 16 bit multiplier VERILOG Architecture of TMS320C4X FLOATING POINT PROCESSOR instruction set of TMS320C5x dsp processor Architecture of TMS320C54X addressing modes in adsp-21xx PDF

    circuit diagram wireless spy camera

    Abstract: JVC RX 320 V 22 pin multi connector sony ccd v100 mp3 player circuit diagram by using msp430 TMS320DSC21 DC motor speed control using IC 555 and ir sensor abstract on wireless spy camera DC SERVO MOTOR CONTROL VHDL 12V mono amplifier 400 watts jvc hdd motor
    Text: T H E W O R L D L E A D E R I N D S P A N D A N A L O G VOLUME 6 TM Burr-Brown Products Designer’s Guide N E W T E C H N I C A L I N F O R M A T I O N O N T I ’ S D S P, A N A L O G A N D L O G I C D E V I C E S New floating-point DSP Back cover triples


    Original     		14-bit circuit diagram wireless spy camera JVC RX 320 V 22 pin multi connector sony ccd v100 mp3 player circuit diagram by using msp430 TMS320DSC21 DC motor speed control using IC 555 and ir sensor abstract on wireless spy camera DC SERVO MOTOR CONTROL VHDL 12V mono amplifier 400 watts jvc hdd motor PDF

    voice control robot

    Abstract: line following robot block diagram block diagram of mri machine Architecture of TMS320C67X Digital Signal Processing Architectures guidance radar data sheet DMA controller of TMS320C67X processor circuit diagram of cruise controlled system hearing aid device specification hearing aids
    Text: TMS320C6000 Technical Brief Literature Number: SPRU197D February 1999 Printed on Recycled Paper IMPORTANT NOTICE Texas Instruments and its subsidiaries TI reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest


    Original     		TMS320C6000 SPRU197D TMS320C62x TMS320C67x voice control robot line following robot block diagram block diagram of mri machine Architecture of TMS320C67X Digital Signal Processing Architectures guidance radar data sheet DMA controller of TMS320C67X processor circuit diagram of cruise controlled system hearing aid device specification hearing aids PDF

    FETAL HEART RATE MONITOR

    Abstract: TMS320C6713 DSK image processing kit diagram Blood Oxygen Pulse Oximetry experiments kit USB docking station F28335 ECG NTE semiconductor manual msp430 DC motor control PID electronic stethoscope circuit diagram MSP430F2013 touchpad ecg semiconductor replacement guide TMS320f2812 pwm eQEP code c
    Text: Embedded Processing Selection Guide ii  Table of Contents Introduction to TI Embedded Processing Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Processor Find and Fit Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2


    Original     		TMS320C5000TM TMS320C55xTM TMS320C54xTM FETAL HEART RATE MONITOR TMS320C6713 DSK image processing kit diagram Blood Oxygen Pulse Oximetry experiments kit USB docking station F28335 ECG NTE semiconductor manual msp430 DC motor control PID electronic stethoscope circuit diagram MSP430F2013 touchpad ecg semiconductor replacement guide TMS320f2812 pwm eQEP code c PDF

    TMdSdock28335

    Abstract: SPRC229 circuit diagram wireless spy camera PowerVR SGX Graphics on beagleboard MSP430FG4xxx electronic stethoscope circuit diagram omap1710 PIC microcontroller interfacing circuit pulse oximeter ECG NTE semiconductor manual omap3530 GPMC NORFLASH
    Text: Embedded Processing Selection Guide ii  Table of Contents Introduction to TI Embedded Processing Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Processor Find and Fit Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2


    Original     		TMS320C5000TM TMS320C55xTM TMS320C54xTM TMdSdock28335 SPRC229 circuit diagram wireless spy camera PowerVR SGX Graphics on beagleboard MSP430FG4xxx electronic stethoscope circuit diagram omap1710 PIC microcontroller interfacing circuit pulse oximeter ECG NTE semiconductor manual omap3530 GPMC NORFLASH PDF

    voice control robot

    Abstract: block diagram of mri machine adaptive cruise control CKE 8002 3D-Computing TMS320C6202 ultrasound cable circuit diagram of cruise controlled system guidance radar data sheet hearing aids
    Text: TMS320C6000 Technical Brief Literature Number: SPRU197D February 1999 Printed on Recycled Paper IMPORTANT NOTICE Texas Instruments and its subsidiaries TI reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest


    Original     		TMS320C6000 SPRU197D TMS320C62x TMS320C67x voice control robot block diagram of mri machine adaptive cruise control CKE 8002 3D-Computing TMS320C6202 ultrasound cable circuit diagram of cruise controlled system guidance radar data sheet hearing aids PDF

    0C032

    Abstract: IC 27c32 EPROM 27C32 27C128 Texas Instruments tms 27C32 ti 27c32 pcb layout of remote control robot wiring diagram timer motor start delta jump to bootloader tms320 27c32 eprom
    Text: TMS320C20x User’s Guide Literature Number: SPRU127C April 1999 Printed on Recycled Paper IMPORTANT NOTICE Texas Instruments and its subsidiaries TI reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest


    Original     		TMS320C20x SPRU127C C203/C204 Index-24 0C032 IC 27c32 EPROM 27C32 27C128 Texas Instruments tms 27C32 ti 27c32 pcb layout of remote control robot wiring diagram timer motor start delta jump to bootloader tms320 27c32 eprom PDF