[mb-devel] Future-proof FP design sketch

[Juha Heljoranta]

Hi,

The test results which I mentioned earlier where fine. Except for the
codebook which is pretty darn difficult to get right.

I also decided to rewrite it in Java (mild compromise between R and C).
The port to C or some other faster language will happen after we have
get it right.

The source code and binaries (they're in same .zip) are available from
http://www.fsfe.org/en/fellows/juha/fpfpf


Crash course:

"The utility reads 16 bit 8192 Hz signed audio data (little endian) from
stdin and prints audio fingerprint in intervals of 512 sample (62.5ms)
to stdout."

$ # process three second audio clip and print the finger print
$ sox sample.wav -t raw -r 8192 -s -w -c 1 sample.dat avg resample \
-ql bandreject 0 220
$ java -jar dist/lib/Fpff-20070520.jar < sample.dat
 QQQQQmAAAIdIIBQQQQQQQQIcAAAZdd


See the README file in the archive for details.

All comments/suggestions/questions/etc are welcome. Patches are even
more welcome :D


Cheers,
Juha


Peter Brooks wrote:
> Good to hear that there is some active development on this, any work i
> do in this will enhance my degree anyway. I am also idling on irc with
> the nick theneb but very little time for idle chit chat until my level
> 2 exams are over. (end of next week)   The current plan is that for
> the computer science project I am undertaking next year I will have
> access to a research server with full matlab access, something i'm
> very much looking forward to. Anyway I'll get more into all this
> within the next few weeks.
> 
> On 14/05/07, Juha Heljoranta <juha.heljoranta at iki.fi> wrote:
>> Hi,
>>
>> Welcome! Glad to see that people are interested in this :)
>>
>> I'm currently working with the finger print function it self. I still
>> have to perform few tests to see how my current implementation works.
>> The implementation is very similar to one described in wiki.
>>
>> I'll let you know the test results when I get them (hopefully in few
>> days:).
>>
>> I will also put the code available after I have cleaned it a bit.