Honored ContributorHi,
I am engg student.I are working on SOPC baesd speech to text conversion.I am confused with how to to program audio codec for Audio to Digital conversion for input from microphone and give it to FPGA.
Honored Contributori am looking module for my project too
Honored ContributorHi,
I'm not quite sure, but I think you can use the SPI SOPC module to build up the communication path to the CODEC Chip. . . . MaikHonored Contributori use Audio Codec but i dont understand how it config
Honored ContributorHello, I am attaching a VHDL file which describes an interface to the Wolfson WM8731 Audio Codec chip located on the Altera DE1 and DE2 boards. This version just does output, but you can augment it to do input. For this you will have to read over the WM8731 datasheet.
I have tested this on both the DE1 and DE2 boards. I hope you find it useful, but there is no warranty implied! JimHonored ContributorHonored ContributorHello Mr. Khan, you could use one of the PLLs on the Cyclone II chip to convert from 50MHz to 24MHz. Or you could just implement a simple counter. You could just divide by 2 (giving 25MHz). This would result in a sampling rate slightly more than 48KHz, but depending on your application would probably not make an audible difference.
Honored ContributorHonored ContributorHello, you should read the WM8731 datasheet. All the details you need are in there.
Honored ContributorHonored ContributorThanks for your vhdl code jjclark. It is really helpful.
I have set it up and it works perfect. I am now trying to feed line in from the audio codec. But am having trouble, as the output has a lot of noise. Im guessing its got something to do with my timing? Would you be able to attach an example of line in? That would be very appreciated.
