Want to do some audio recording or some measurements?
A cheap but high quality solution is to use a Texas Instruments PCM4222EVM board. My experience is that this boards performance and sound quality beats internal/external sound cards costing many times more.
The downside? Well there is a bit of DIY involved, but its very simple and even the most inexperienced with electronics should be able to manage it. Also, sample rate selection is on DIP switches. However I dont see this as an issue - just set and leave them to record at higher rates and downsample in software later if necessary.
The board is based, not surprisingly on the TI PCM422 ADC. http://www.ti.com/product/PCM4222
It includes fully differential input buffer (XLR in), dual AES/SPDIF and I2S outputs. http://www.ti.com/tool/pcm4222evm
The board is available from the usual suppliers, the best thing being the price ~ $150 US.
http://www.mouser.com/ProductDetail...M4222EVM/?qs=sGAEpiMZZMtmW1oUCKTs6uC2DXSEnixQ
http://uk.farnell.com/texas-instrum...pn=true&categoryId=&searchRef=SearchLookAhead
http://www.digikey.com.au/product-search/en?keywords=pcm4222evm
Here is a piccy
To get the board working all you need are 3 power supplies +-15volts and 5volts (0.5 amp should suffice). If you dont have a SPDIF input on your PC soundcard the simplest and cheapest option to get data into your PC is the MiniDSP ministreamer SPDIF to USB card @ $35.
https://www.minidsp.com/products/usb-audio-interface/ministreamer
However this will only accept sample rates up to 96kHz. I have also used the Yellowtec PUC2 lite AES to USB converter up to 192 kHz.
http://www.yellowtec.com/en/products-lp/puc2-lp/puc2-lite.html
To be continued......
A cheap but high quality solution is to use a Texas Instruments PCM4222EVM board. My experience is that this boards performance and sound quality beats internal/external sound cards costing many times more.
The downside? Well there is a bit of DIY involved, but its very simple and even the most inexperienced with electronics should be able to manage it. Also, sample rate selection is on DIP switches. However I dont see this as an issue - just set and leave them to record at higher rates and downsample in software later if necessary.
The board is based, not surprisingly on the TI PCM422 ADC. http://www.ti.com/product/PCM4222
It includes fully differential input buffer (XLR in), dual AES/SPDIF and I2S outputs. http://www.ti.com/tool/pcm4222evm
The board is available from the usual suppliers, the best thing being the price ~ $150 US.
http://www.mouser.com/ProductDetail...M4222EVM/?qs=sGAEpiMZZMtmW1oUCKTs6uC2DXSEnixQ
http://uk.farnell.com/texas-instrum...pn=true&categoryId=&searchRef=SearchLookAhead
http://www.digikey.com.au/product-search/en?keywords=pcm4222evm
Here is a piccy
To get the board working all you need are 3 power supplies +-15volts and 5volts (0.5 amp should suffice). If you dont have a SPDIF input on your PC soundcard the simplest and cheapest option to get data into your PC is the MiniDSP ministreamer SPDIF to USB card @ $35.
https://www.minidsp.com/products/usb-audio-interface/ministreamer
However this will only accept sample rates up to 96kHz. I have also used the Yellowtec PUC2 lite AES to USB converter up to 192 kHz.
http://www.yellowtec.com/en/products-lp/puc2-lp/puc2-lite.html
To be continued......
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