Audio Finger Print For Advertisements Provider (For Discussion)

[Max Bayne]

hi Boys i read more about audio finger print and goggled more about this field

but resources is limited and found more companies that make this service but matching data on there servers and no open source algorithm or Library to make this ...

i have some body called (Advertisement Provider) and he pay money for some TV station to aired his advertisement content and he need application to identify if the TV station aired his advertisement or not ....

so after searching more ... i get that the technology that can make it called (Audio Finger Print) so i need help for this :

1- need the logic that can be used to get our goals (identify the advertisement content on TV station online streaming) need ideas please .

2- need some open source libraries can use it on C# i don't need online service that create the fingerprint local and sent it to their server to find matching i need all local with support of database .

3- i need to know how can i implement this using echo print if this possible or not and need to know something else

if i have song with length 10 minute what is the size will echoprint need to make fingerprint for that 

and if i want to search for this song and take a amount of 10 second of this song but from last mean if song is 10 minute and i get the 10 second from end mean from start of 4 minute and 50 second and get the last 10 second and match it to echoprint is that can get the song or not 

thanks for every body for help ...