Re: [PD] idea for simple technique for getting noise from signal
On Wed, Aug 14, 2013 at 8:14 AM, IOhannes m zmölnig zmoel...@iem.at wrote: On 08/13/13 23:27, Hans-Christoph Steiner wrote: That reminds me, the simple Pd question I have is: anyone know of an XOR tilde object? [expr~ $v1 ^ $v2] ... And cyclone has bitwise operators for signal, [cyclone/bitxor~] amongst them. They can operate on floats as raw bit sequences, or convert the floats to integers first. Katja ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] idea for simple technique for getting noise from signal
On 08/13/13 23:27, Hans-Christoph Steiner wrote: That reminds me, the simple Pd question I have is: anyone know of an XOR tilde object? [expr~ $v1 ^ $v2] mfgasr IOhannes signature.asc Description: OpenPGP digital signature ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
[PD] idea for simple technique for getting noise from signal
These days, I'm applying lots of DSP thinking to other kinds of signals to understand privacy leaks and ways around them. (It turns out that DSP thinking is quite useful when it comes to thinking about what metadata is being leaked and how to reduce that leakage). True random is a common need for cryptography, so I've been thinking about how best to feed sensor/mic noise to the kernel's random source. One idea is to only use the ADC/accelerometer data when the RMS amp is low, so the signal much more likely to be all noise. Someone else proposed this idea, and I was wondering whether it makes sense: How about just keep the least significant bit from each sensor source, and skip any thresholding based on on amplitude or signal energy? Then for multiple sources, perhaps just XOR the bit streams together. That reminds me, the simple Pd question I have is: anyone know of an XOR tilde object? .hc ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
