MJ5
Posts: 9
Joined: Tue Oct 18, 2016 9:21 am

[Help] ADC @ 12.8KHz

Mon Dec 19, 2016 10:44 am

Hi there, I am just looking for an ADC I could work at 12.8KHz, is there anyone use that frequency or knows any ADC working at that frequency?
I would like 2 channels or even 4, and 12 bits of resolution.
It will be used for working with both Wevelet and Fast Fourier Transforms.

Thank you guys!

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joan
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Location: UK

Re: [Help] ADC @ 12.8KHz

Mon Dec 19, 2016 11:52 am

viewtopic.php?p=514141 may be useful.

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PeterO
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Re: [Help] ADC @ 12.8KHz

Mon Dec 19, 2016 11:54 am

At that sampling rate and resolution you are more in the territory of audio codecs than plain ADCs. Look for either a USB or I2S device with line level (not microphone) inputs.

PeterO
Discoverer of the PI2 XENON DEATH FLASH!
Interests: C,Python,PIC,Electronics,Ham Radio (G0DZB),1960s British Computers.
"The primary requirement (as we've always seen in your examples) is that the code is readable. " Dougie Lawson

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joan
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Location: UK

Re: [Help] ADC @ 12.8KHz

Mon Dec 19, 2016 12:05 pm

You can get results. I used three cheap mics and did 10 bit sampling at 25ksps. This was an attempt to locate a sound source.
bb-mic.gif
bb-mic.gif (33.85 KiB) Viewed 914 times

MJ5
Posts: 9
Joined: Tue Oct 18, 2016 9:21 am

Re: [Help] ADC @ 12.8KHz

Mon Dec 19, 2016 12:14 pm

Ok thanks, I will take a look at it. It is going to be used to measure the Electric Power consumed and at that freq it nails the transitory effects.

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PeterO
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Re: [Help] ADC @ 12.8KHz

Mon Dec 19, 2016 12:39 pm

MJ5 wrote:at that freq it nails the transitory effects.
What does that mean ?
PeterO
Discoverer of the PI2 XENON DEATH FLASH!
Interests: C,Python,PIC,Electronics,Ham Radio (G0DZB),1960s British Computers.
"The primary requirement (as we've always seen in your examples) is that the code is readable. " Dougie Lawson

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