Electronics > Projects, Designs, and Technical Stuff
Get audio data out of equipment.
Jan Audio:
Hi, i like to get audio data out of synthesizers.
These things are complicated, suppose i find in what chip the data is, how do i get the bytes out ?
These synths contain multi-samples.
Do i have to wreck these equipments before i can get it out ?, maybe i will.
Or can i read all data without cutting and de/re-soldering ?
I dont have a digital scope, i like to buy one for this project if it is needed.
I mean, can i use the USB datalogger on a scope for this ?
thank you
magic:
You want a realtime digital output or the samples?
For the former, locate the DAC and intercept its input signal.
For the latter, I doubt it's going to be easy and deliberate copy protection schemes may be in place to prevent cloning by shady competitors.
Bassman59:
--- Quote from: Jan Audio on September 03, 2019, 03:55:31 pm ---Hi, i like to get audio data out of synthesizers.
These things are complicated, suppose i find in what chip the data is, how do i get the bytes out ?
These synths contain multi-samples.
Do i have to wreck these equipments before i can get it out ?, maybe i will.
Or can i read all data without cutting and de/re-soldering ?
I dont have a digital scope, i like to buy one for this project if it is needed.
I mean, can i use the USB datalogger on a scope for this ?
thank you
--- End quote ---
If you want to get digital audio data out of a synthesizer that doesn't have a standard port for such (like USB), then the obviously place to start is at the DAC chip. RTFDS for the DAC to determine its digital interface (likely I2S, but there are others) and monitor it with a 'scope or data-logger. You might need to solder some short wires to the signal lines.
Jan Audio:
The samples are stored in ROM, and figure out how the data is stored for each sample.
First synth has ICs :
3 x TC534000P ( 8 x 512Kbits ) , i think the multi samples are stored here.
2 x 27C512 ( 8 x 64Kbits ) , what would be in here then ?
I think the ROMS are degrading, build year 1989.
oPossum:
A TL866 can read those. The TC534000 isn't explicitly supported but it has a standard pinout so it can be read as a 27C040.
It would be best to remove them for reading. Use a proper vacuum desoldering tool so you don't damage the PCBs.
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