Hi all ,
I intended to build speech recorder and audio line in recorder .. the play back not important for me, the most important is Encoder part , I only need to connect the codec IC to sd card and microphone and start record, when I finish I need to take out the SD card , connect it to PC and download the recorded data as MP3 format or wmv or any..
Yes I test Development kit of VS1063 and it record well , but I phase problem such as power consumption, the firmware not stable , need lot of components to make work if I intended to make the PCB my self for it .
I need a good quality audio encoder IC, or I can control it as such as sample rate ,
there are also ISD15C00 , the problem of this one is that The addressing ability is up to 128Mbit, which is 64-minute recording time based on 8kHz/4bit ADPCM. " her the size is of memory is problem for me .
again what I need from freelancer is that .... guide and tips to select best audio encoder ic with this specification or near to it :
1- good power supply voltage " 1.5-3"v
2- low power consumption
3- no need lot of extra components to make work in proper way .
4-controlled via micro controller
5- no need complex code from micro controller
6- connect and accept high sd card memory "4 Gb to 32 or 64 sd card .
7- pin for connect microphone to is and if possible to accept to microphone to it will be great .
8- create audio format in sd card it self , no need for hard and complex code to compress the audio .
thanks and wait for paid
7- pin for connect microphone to iT and if possible to accept TWO microphone to it will be great .