Roman Black Sound (btc)

[Ioannis]

Hi Darrel. This is an article from the EDN magazine, February 1999. I thought to save you from the trouble to search the site and download it.

It uses the PIC16C556/12C672 and ADPCM DECODER/ENCODER techniques.

I don't know if they produce smaller files than Romans as I have not tested yet.

OK, i will try to zip it and break it into 2 files. I hope windows ZIP can do that.

Ioannis

[Ioannis]

I made the files *png. Hope that are readable.

Ioannis

[Agent36]

Hi,
How do you convert the .BTC file generated by Romans BTC Sound encoder to a hex file?
Just done a quick search on here and using google, could not find anything that helped.....Found a HEX editor, going to see if I can encode some sound!!
regards

[sirvo]

Probably this is not the correct way but rename the .btc to .bin and try again... It works with WinPic800..

[Agent36]

Hi Sirvo,
Thanks for the reply will try that, I am using the pickit2 programmer to down load the hex file. I can now down load to the eeprom, not sure if the code is right but its a start. I will keep trying.

Did you get your code working ok?
regards Nick

[sirvo]

Hi Nick,

No yet, The sound is still slow.. everytime I listening to it I remember Louis Armstrong singing 'Wonderful World' when played in the K7 Tape... so many years ago...

Please, let me know if you get it working!

Thanks!

[Agent36]

Hi sirvo,
I have not got anything working yet using romans btc sound encoder. I have been trying gioppy's code example with no luck. Not sure if i've got the hex dump right or my calculations. A one seconds worth of hex code wont fit on a 512 eeprom. Its getting to the point where I might offer a payment to someone on the forum to write this bit of code for me or take me through the steps required to get it working. Adding good audio to my project is becoming very hard work.

If I do get something working i'll let you know, I do have some ISD control code if you want it.
regards Nick