VoIP in a GSM/GPRS and CDMA/1xRTT networks

Started by marzaq7 in Piclist13 years ago

Hi all, Can anybody help me with some questions to implement VoIP in a GSM/GPRS and CDMA/1xRTT networks: 1. What?s is the minimum...

Hi all, Can anybody help me with some questions to implement VoIP in a GSM/GPRS and CDMA/1xRTT networks: 1. What?s is the minimum sample rate and bits per sample recommended ? 2. What is the type of CODEC or compression algorithm recomended ? 3. Is there any chip that integrates ADC and compression function to do the job of sam


adc voltage

Started by emr uygur in Piclist13 years ago 2 replies

Hi All,   I have a very simple but for my project very important problem.I am using 18f452 and compact flash memory card. Cf memory...

Hi All,   I have a very simple but for my project very important problem.I am using 18f452 and compact flash memory card. Cf memory card works with 3.3V so not using voltage dividers between Cf and pic , I want to use 18f452 with 3.3V but in my project I must always convert analog data to digital and I read something that "A/D conversion


PIC16F877 - AD7730 SPI Connection Problem

Started by Triontech Technology in Piclist13 years ago 1 reply

Hi,   I wonder if any of you guys could help me out a bit. I am trying to hook the PIC16F877 to AD7730 (ADC loadcell controller for...

Hi,   I wonder if any of you guys could help me out a bit. I am trying to hook the PIC16F877 to AD7730 (ADC loadcell controller for Analog Dev) thru SPI.   I set the AD7730 to work in continuous conversion mode, monitoring the RDY line once data has been updated.   I am having problem getting the PIC to


hitech c error

Started by siva...@gmail.com in Piclist10 years ago 3 replies

HAI TO ALL, I have coded my program for a adc and a stepper motor. I use 3 functions for this. I get an error..................... Error ...

HAI TO ALL, I have coded my program for a adc and a stepper motor. I use 3 functions for this. I get an error..................... Error [285] F:\pic solar panel\picsolar.c; 22.1 no identifier in declaration Warning [374] F:\pic solar panel\picsolar.c; 22.1 missing basic type; int assumed Error [314] F:\pic solar panel\picsolar.c; 22.1 ";" expected Error [285] F:\pic solar panel\p...