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Project DAC and LPT

Hi,

I need to do the following project for university
DAC project using LPT link and R/2R resistor ladder, the operating program should be written in Labview, the application should allow to play sounds stored in WAV, MP3, OGG format.

Can you guide me on how best to approach this topic ?

Thank you in advance

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@strabi wrote:

Hi,

I need to do the following project for university
DAC project using LPT link and R/2R resistor ladder, the operating program should be written in Labview, the application should allow to play sounds stored in WAV, MP3, OGG format.

Can you guide me on how best to approach this topic ?

Thank you in advance


So your assignment is to design an audio DAC using a printer port and R/2R ladder that supports three different digital audio formats?

 

Oh my... That's a mighty tall order. 

 

At least the hardware part is quite simple. Here's a commercial example Covox Speech Thing

 

You can write bytes to the LPT using VISA...

 

So the hard part is gong to be supporting the digital audio formats. As all of them except for WAV are compressed audio, so you are going to have do some research on that part. Also your DAC is only bits so you will need to not only be able to open and play the files, you will have to convert them from 16bit compressed audio to 8bit uncompressed.   

 

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=== Engineer Ambiguously ===
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