Audio not matching

[internetztube]

Hello Joren!
First of all, I want to thank you for publishing this project on Github!

Have the problem that an audio snippet is not recognized.

olaf store store.mp3

olaf query external-stream.mp3

Side note, in my case the monitor command throws an error, maybe this is related.

olaf monitor external-stream.mp3

$ olaf monitor external-stream.mp3
1/1_0s external-stream.mp3 matches trimmed.mov q_to_ref_time_delta: 0.00, q_time: 5.44, score: 146, match_id: 779030374, ref_start: 0.29, ref_stop: 5.44
1/1_0s external-stream.mp3 Proccessed 471 fp's from 7.0s in 0.004s (1962 times realtime)
1/1_0s external-stream.mp3 Audio file 151390292 not found or unreadable.
1/1_7s external-stream.mp3 Proccessed 502 fp's from 7.0s in 0.004s (1969 times realtime)
1/1_7s external-stream.mp3 Audio file 151390292 not found or unreadable.
1/1_14s external-stream.mp3 Proccessed 515 fp's from 7.0s in 0.003s (2020 times realtime)
1/1_14s external-stream.mp3 Audio file 151390292 not found or unreadable.
Traceback (most recent call last):
	9: from /usr/local/bin/olaf:460:in `<main>'
	8: from /usr/local/bin/olaf:460:in `each_with_index'
	7: from /usr/local/bin/olaf:460:in `each'
	6: from /usr/local/bin/olaf:461:in `block in <main>'
	5: from /usr/local/bin/olaf:84:in `monitor'
	4: from /usr/local/bin/olaf:189:in `with_converted_audio_part'
	3: from /usr/local/bin/olaf:88:in `block in monitor'
	2: from /usr/local/bin/olaf:88:in `each'
	1: from /usr/local/bin/olaf:95:in `block (2 levels) in monitor'
/usr/local/bin/olaf:95:in `basename': no implicit conversion of nil into String (TypeError)

Maybe you can help me with that.

Greetings Fred
Archive.zip

[JorenSix]

Thanks for the bug report and for providing test files. Much appreciated.

I was in the process of reshuffling a couple of things. Now the output is somewhat better documented and I removed a bit of stale code (an inefficient matcher). These changes had some unintended consequences.

Also fixed a bug where empty database results could return a match that was interpreted incorrectly (and result in the filename bug).

As you can see below these issues should be fixed now. Please do provide feedback if other issues arrise.

olaf query external-stream.mp3
query index,total queries, query name, match name, match id, match count (#), q to ref time delta (s), ref start (s), ref stop (s), query time (s)
1,1,external-stream.mp3,store.mp3 3812745049, 15, 0.09, 0.01, 0.02, 0.12
1,1,external-stream.mp3,store.mp3 3812745049, 12, 0.04, 0.00, 0.02, 0.07
Proccessed 13202 fp's from 153.2s in 0.095s (1617 times realtime)

olaf monitor external-stream.mp3
query index,total queries, query name, match name, match id, match count (#), q to ref time delta (s), ref start (s), ref stop (s), query time (s)
1/1_112s external-stream.mp3 matches store.mp3 3812745049, 10, -0.02, 0.02, 0.02, 0.00

[internetztube]

Many thanks, Joren! 🎉

[internetztube]

👋 Joren!
The example files that I provided now work. But another example is now not working. Thanks in advance!
Regards Fred
falco_wiener_blut.zip

[JorenSix]

That example also works now (but barely) by rounding the frequency part of the hash instead of truncating it. I have better experience with longer queries...

To get better insights into Olafs retrieval performance I have included an evaluation script which can be used (or modified) for your dataset. It needs a folder with audio items and creates and launches queries.

This is only a fist part: the analysis part is still in the works. With that info I will be able to optimise parameter set / fingerprint hash construction.

[JorenSix]

Shuffled things around a bit for a better sensitivity while keeping a perfect specificity calculated using the evaluation script.
This changed fundamental aspects of the algorithm and should improve matching. Please give it an other try.

[internetztube]

Will give it a try later this week. Thanks for your effort!