Audio Recorder

$250-750 USD

Closed

Posted

about 10 years ago

$250-750 USD

Paid on delivery

High Qualtiy 2 channels Audio Recorder with Encryption sound fonction Firmware and software is needed. (see picture for size and idea of hardware) - High-quality audio recording on a Flash memory 1MB-2MB Encrypted Sound File output (will need download and decoding software as well) - Use different power supplies sources between 2.7-3.7V - Size - 7mm * 20 * 1.2mm - Adjustable Sampling - from 5 to 24 kHz, - Bit analog-to-digital conversion - 16-bit recording saved in WAV-file with compression.. Voice activation selection (VOX) - Low Power Current consumption -The average current consumption in the recording mode - 18-26 mA, - Current consumption in standby mode, start recording IMMEDIATELY when sound is heard. - - Current consumption in standby mode, recording pauses VOX - 2-2,5 mA. - Current consumption LED display error and exception handling (wrong format or card failure, voltage drop, overflow card) Will need PCB laytout, Firmware for encryption as well as audio file compression, high quality sound Chip VERY important if possible 2 CHANNELS recording into 2 SEPARATES FILES Please bid only if you have done this before.

C Programming

C++ Programming

Electronics

Project ID: 5746073

About the project

4 proposals

Remote project

Active 10 yrs ago

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@ENGKAM

Hi, Is it relevant for me ? Please answer.... Thanks =========================================================== Yes I did project like this. I use a special CODEC for sampling. Its from TI (TLV320AIC3254) and it can record up to 3 stereo channels. It can also activate speakers or headphones. Thos codec has a built in DSP and is capable of implementing all sort of filters on samples. But if you want I can choose simple codec if its simple as you describe. As far for the CPU, I will choose an appropriate CPU (I will try to stay simple and chip) My question is if you want first a prototype, build from evaluation boards (no actual layout) Or You want directly to design new PCB with all your features (if you need buttons,LEDs etc..) Or you want both. I will be happy to build this project for you. Respectfully, Amir

$2,777 USD in 10 days