Introduction in Audio Retrieval 2 (12.05.2011)

Video in TIB AV-Portal: Introduction in Audio Retrieval 2 (12.05.2011)

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Introduction in Audio Retrieval 2 (12.05.2011)
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10.5446/348 (DOI)
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Technische Universität Braunschweig
Institut für Informationssysteme
Balke, Wolf-Tilo
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Content Metadata

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In this course, we examine the aspects regarding building multimedia database systems and give an insight into the used techniques. The course deals with content-specific retrieval of multimedia data. Basic issue is the efficient storage and subsequent retrieval of multimedia documents. The general structure of the course is: - Basic characteristics of multimedia databases - Evaluation of retrieval effectiveness, Precision-Recall Analysis - Semantic content of image-content search - Image representation, low-level and high-level features - Texture features, random-field models - Audio formats, sampling, metadata - Thematic search within music tracks - Query formulation in music databases - Media representation for video - Frame / Shot Detection, Event Detection - Video segmentation and video summarization - Video Indexing, MPEG-7 - Extraction of low-and high-level features -Integration of features and efficient similarity comparison - Indexing over inverted file index, indexing Gemini, R *- trees
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I think we were the Bush and right now anyway booking a Texas for some experiments and I've seen that the losses compression as I've said things some of both to of 50 for the compression sold the most employed factors out of the competition they how can idea obtained the PM at the compression and some other board impact of some the speed of the compression in the competition we don't really want to wait for a week to compressed lower library of music and the fact that this idea time going to play it and 3 1 the 1 4 decompress and then played by 1 that the decompression processes happens on the flight and the fact that the play about the health of Kim myself down so taking into consideration used factors for example of highest here that is of for 4 and compressed sauce and the for example of the lack compress along with the previously discussed the boat things a relatively would compression rate of racial quite including quoting speeds of up to 20 of 20 in mental time speed and a very good decompression motoric should be this 1 his is very used to have a library of sounds music but you really want to have been written out of quiet for the loss to compression decides that the competition and compression speed which will cost up to 4 times the compression date is very important so I'm interesting if I'm going to was diary and interested in something better than 50 per cent and it is something like 92 per cent competition and and the most important factor is the quite high losing but there I don't want to close the sound and not going to accept that when a compressive witless a compression what various a record from trickled has so of another tool for measures the quality of this compression procedures observed and and experiment which has been published on the internet than the idea that he was to vote for 1 of NEMO opinions quote measurement with different you subjects they were given a scale from 1 to 5 and about 5 where they are they had tool to rank sound is being heavily bought did for unpleasant up tool begin medical denies any difference between the compressed underwritten some and the results of quite interesting saw for example for case we can also take an absurd that the every inch of the way the quality is about 5 sold most of the subjects the and see any difference with plums the highest rating received by human subjects that being somewhere 0 with a bit of 9 9 and the and the lowest being somewhere for point 5 loss sold actually even the highest critics died in Keith that crippled for 80 sea and combined with the very good compression grades and the fact that it's a ports multichannel seats of great great great compressed world of music
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you call like for example have a database of signs which you can use like for example for a team whose he made you know this more than the soft going to use with the pieces of instrumented different moulds you can planting and create so this is the audio and you can all have been in database and search for what he was doing and how some upgrade for them on the other side the date the also presented also of the process of information transfer so I if you had just music police and to the point down side you meet for example storey she speeches where not the take that it said at the same time but the message extracted from and if would have for example the transcript of the speech that takes it will be the same close Yimou's information takes to have what the boss and the between the speech said but you don't really have put example of the sort that the way he said that information for example of the action of the public it can also be used for Recording so conversations total calling for costs for negotiations studies at the beginning permission account storey in the data usually when dealing with the audio databases that piccolo applications of polio for this I was in the context of the time 1 of them is the indication of told you see so for example of the old you create the classical example here is more when you go to a music show and you want to buy a some using these 2 woken up certain something your head and you don't know how it's called some of the type that you come Goldington made by from Amazon because you don't know how it goes and you will to the music and then to the right to head that she died at sea with the news that melody that some like this and you have this audio as pretty by paving the database which is able to understand your creating so if you see this in a way that would then it could be would you either the sound more information about the man with your information about this is that because in ideal of code is pretty or indication of what you see another application is the classification and such see simulator for example want to cross the river to get the scene music pieces of missing but it belonging to the same for a certain John like for example where the song and the eye want something stimulus I'd like a bit of K but like this staples so once BigSim and this is a typical case of classification and simulator to and that is also why the synchronisation where for example of the text and the have some spoken speech some speech and they want to synchronisation between between the 2 what's open and but what the hell but the extra for synchronisation is not something according to the Daily in the lecture so what they are going to autofocus on as the occasional or during the grid OK sold the peak of tasks in the occasion of Stephen will want to find the title for a minute piece ahead in my head may be Oregon off as an it's 1 of the 1st applications think it was written for for 5 4 and the six 2nd so well not from the Human place but you can pull out your cellphone status and and later tree-code some sort of a shorter the piece of music from the radio and then to them with of this music Thesis called scenes it may be turned away by items of something like that but it's also a great idea so we decided occasional for using singers can also be a great idea for more money state for example of the fight among blink advertised on the radio and the want to be sure of their Radiohead's his promise and but by his or around might have worked as an treaties there all with down or contract before that don't need to see near the radio and tried to of the conflict he deep to play my advertising triphthongal 4 times for all time but the icons before or more on this automatically by the M able to before McGinty occasional for using so what is going to happen it's blue when it bought the radio programme and compared the radio programme with my advertisement and the matches when it says that the programme compared to different part of windows of the programme match with my advertisement then it's great contact and the Tree of them time and had been seen in the used case can be used by the Coca right control and for example looking that what the radios played just the company them with different sort some pieces and see if they have licence contact soul and other of the 2 because of the application is hold your mind so want to here some sunk from my terms or something like that an account and the police have stream to meet for from the local of services he would use the
Located the 2nd the dappled of application is the classification and matching so the last here is defined told you signals which are perception and see so air want to find pieces of losing which are kind of the same and there is a great really be feel that the Book recommend the systems to interest that so for example of the more you to where off the family they also have a great at the lower programme of the both programme the interface where you can use it to improve like for example give me some which are seem to this 1 looking for me out of the sweeter simulator this 1 for example usurped some stimulus to Queen something seeming for model not and they give you a taste and that this is actually done based on matching for songs how well they may Torrelavega because he tried to get so busy John the classification or your libraries This is this is a nice application for your libraries to off from his classification automatically and the secret the station off all the time as a as a mansion synchronisation between speech and fixed between notes and audio where my right now following the Dalton 0 what what is his singing right now or achievable or the of takes from from speech for example sought to find the specific point in a speech but said this is a part of not going to concentrate on so we are much more interested in created by some OK so of the state of the bill for this tree applications that start to the identification which will still retains his nature of its the simplest of this 3 programs and there actually it's a successfully been result that it has Sam is an example of the bill that stepped on land so you can take it tested it also believe is the to in the next lecture interesting applications for the classification and matching it still of its use local ruled tool manner lamentation so actually stand with a local manual were met at the time and all the ultimate because the cations works on their after a small collection of some sort this match across as it is still programme at the key Campbell's load of training usually and its it from where it's a provided stick approach to be close a procedures here machine learning techniques and though they were but it's not that is not as good as they go into the kitchen points tempo for synchronisation and in the meantime 1 can obtain no political area it's like for the synchronisation between which language and text OK so we spoken about the state of the general applications but the for speaking about you databases the need to speak of how to make the top 4 seeds published or and usually the order of the day however storey in robust in the face will actually get nothing more than bandages called
Most of the databases who for bold and you can store either the new or sold your they don't really care what use board their and their actually not too far from the point of it because you can have a great editor of both the new and old in the book to save the somewhat despite the were song but this doesn't really had pupils and on Continent such there is also the concept of spy ropes would usually the difference is 1 of them I managed by the operation system and 1 that is diminished by the database he said additionally the at like for example of the type of fight that size by for the last time it was a song for the future of the loss of life for example sound features the and play to all of those lulled saw with the couple and their just the same as with Dundee and I need to remember to we and we spoke about the need use which have some feature length the brightness and so on this is exactly what we had here or so and the need to get on with the future of the state help us before the mountain and the for example the cost before transcription of languages text or phone I'm update music pieces for for me
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the might be might have different things the silence ratio is another featuring time domain and the action this means that for of the use that belonged to a period of time but the Great Christian here what these side so you can see that if you have of an entry to the show that had because you might have 0 crossing for for example and in the case of awful for crossing the and could easily sell actually there that would it would Touristique tool to establish a legal beach beach under which everything that you have sold on the open AMPI to that this is quoted the noise or size and what time also must established is the number of meetings numbers number of 54 points for which the something must implemented lower than the established aeschylean so that it is considering a period of silence so he for example a just 1 point on the island now may be the tools of 10 of the potato and Ampi to both than that of the present my my said Churchill it doesn't really composite but I hate the fact have the cost of classic give sequence or like 0 5 or 6 such treating and that might be side so it depends on my parameters and Howard find them but silence can be detected at the or case spoken of the global defined what below the frequency of weekend before wilfully confirmation of the signalled and this is actually means that we transport the same that we have been to the frequency may be decompile seeking to sequences of each of these decompiled frequency with corresponding fish and this is how we get the presentation of the big 3 of the victims suspect almost the same thing about the most and put them but you have the equations equations of which she conceded trees and the amount of energy for off-frequency debated equations named for the more important that is that the compost part of the seek sold as apsidal turned the compression you can hold the 1st 5 where efficient and cut out the rescue whose death for example that energy is aimed paupers but he and the 2 should be measured and 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On hot morning again featured in the frequency domain it accounts for the the lowest of the low frequency it's also called the fundamental frequency so or if you have a fundamental frequency for example for a for for music instruments that you have also have hot morning which means that the seed of the increase is the of repeat this based on the frequency in multi select for example you could have a standout which somewhere she had like 400 point the head and this is also fundamental frequency of this is how it looks on the same day size dime doesn't care and harmonics but if you do the same or more on 1 of food for example you will also have the time or like 800 which is the 1st time on a full time 400 40 and then you would have a 1 thousand 200 20 3 times for 100 for the 1st and so on harmonics and a decrease in the intensity
And those who want to work this time only question nations basically means down This year is the fundamental frequency you may see here there might be some noise but this 1 is low enough to take into account the relations This is the 1st car morning which would be the 800 the and the next 1 and the Fuqua Citypoint sampled the home negotiations again for stream Instruments what this means is that for example the 1st high 1 equal look something like that the 2nd half when I would have doubled the frequency towns something like that the new code of morning 3 times the frequency of 4 times the frequency and so on and the Allwood the old low but dissipate together at the end of taking the sound in in including the and the and not being of the peaches being played so as it said it to be difference between the spectrum offers some foreign instrument looks like an of the synthesised 1 because it synthesizer doesn't have harmonics you may be able to stimulate them but he has to say some doesn't think like that not the features which is 1 of the most important features which will going put and in the next lectures and its detectable only for failure at ICCS some sort of the way some of the case of the sins of simulations and it can be approximately by means of the 20th spectrum and usually 0 and most of their applications its the beaches cost to beat the fundamental frequency the is calculated from the frequencies and amplitudes of the peaks so as said this fundamental who is fundamentally frequency usually used as an approximate should without also procedures 1 can use so at with what can used to before the detection and most of them so 1 of the most well known not is the money for that spectral required to discuss this in the case like for example using mobile correlation with the team on to the beach discussed above them in the next lectures this lecture we discussed above the introduction into all during Tree but we have touched the basics off for the day of the week discussed the about what kind of all the information is stored in multimedia databases and we start to discussing the bulk Peter Blake and how we can before or during the well and so rich in order to take the next leg to will discuss about classification entry told you own told the 2nd major applications will continue with the load hold your features of a week to go in for the smallest difference human French defence Simon and could be put into procedures became use in order to detect the beach but it think of for the attention