Change ttarg and whatelse?

[Lorenza]

Hi all I'm making some tests with echoprint codegen for detecting advertisements on audio and video broadcasting. Even if advertisements are very short (6 to 30 secs) it works quite well. It works well even with some bumpers that are even shorter (3-5 secs). How can I try increasing the precision even in this case? The problem seems not being only the duration rather the actual content of the signal...

Thanks in advance for any suggestion Lorenza

[alnesbit]

Lowering the query length down to 3-5 seconds with the default values won't work fantastically well because there won't be enough hash codes for reliable matching in the general case. But if it is working for you, then great! As you've noticed, the actual signal content can affect matching rates too. Decreasing ttarg will increase the density of hash codes, which should improve recognition rate, but depending on how big the database it will be harder to scale up.

[Lorenza]

Thanks a lot! Actually I've made some experiments: changing ttarg doesn't improve the precision (and the beaviour seems worst with longer jingles). Any other suggestion about default values that could be changed.

Thanks in advance Lorenza

[ymxiao]

Increasing the number of the IOI pairs can improve performance in some sense(in my experiments, from 21.44 to 36.56), but it is still unsatisfied. Some more directions could help?

[fchest]

Hi, I just want to know how to change the database. Do you know how to do it ? Thanks a lot!