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  5. LARM.fm, tutorial 2: How to search in larm.fm
  1. Home
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  3. Tutorial
  4. LARM.fm, tutorial 2: How to search in larm.fm

In this tutorial you can learn how to search on larm.fm. Larm.fm is an interface to the part of Denmark’s Radio and TV archive, which has been digitised and made accessible. Material is still added to the archive. Larm.fm is a living archive, and you take part in developing it.

This is how to search within larm.fm;

At the top there is a search bar, where all accessible text in larm.fm can be searched. Bellow are three options for filtering search results: by time, by type and by channel. To the right there is a list of results from the current search.

When nothing has been entered into the search bar, you can see the number of the different types of material in Larm.fm. Right now there are 1,2 million TV programs in the archive. When I select “TV programs”, I apply a filter to the search so that it only includes TV material.

To get an overview, I can click “udsendelsesdato”, or in English “broadcast date”, to sort the list chronologically by broadcast date, with the earliest broadcast files at the top. I could have chosen to sort in the opposite way: with the most recently broadcast files on top. Right now the earliest TV programs on larm.fm are from 1973.

On top to the right I can jump between pages in the list view and see how many results there are on the page. I select 100 so the interface displays 100 results on each page.

If I limit the search to radio, you can see that there are roughly 900.000 radio programs on larm.fm. Here, you can see a peculiar date; 1st /January in the year 101. This date is given to files with unknown broadcast dates. To avoid them being mixed up among a chronologic list view, I can filter my search by time period.

Filtering a search by time period can be done in three different ways: I can write the date and time in the “time period” field, I can use the calendar view on the right hand side and click the desired start and end dates, or I can use the “set time” function and select a time period, that includes all years from 1920 until the late 2010’s.

Now we can see that the earliest radio program in larm.fm is from 1931.

A third type of content – in addition to radio and TV programs – are the program sheets. These are the Danish national broadcaster, DR’s, information on upcoming broadcasts. In some cases the program sheets also contain corrections and notes on changes to the planed programs.

The earliest program sheets in LARM are from 1925, the latest are from 2006. The program sheets are OCR scanned, which means that you can search words in them.

Finally there is also a large collection of manuscripts and summaries from the radio news  from 1937 up until 1999. This material has not been OCR scanned yet, so you cannot search the text within them, but rather only by searching for the exact date.

If I type “Roskilde Festival” in the search field, I can search in all accessible titles, program descriptions and other metadata from TV and radio programs and in the program sheets. The search also includes the comments and descriptions I and other users have added to Larm.fm. The search does not, however, include the words spoken in the programs.

The search for “Roskilde Festival” returns more than 11.000 results.To find the precise combination of the two words “Roskilde” and “Festival” I can put quotation marks around the two words.

Before, my search returned all material with ether Roskilde or festival in it, now I only get material where both words appear together and in the right order. This search returns 945 results, including program sheets, TV- and radio programs.

Using AND, NOT in all caps, and truncation makes the search more precise. For example , I can search for concurrences of “Roskilde Festival” with the Danish band Gnags by writing “AND Gnags” after Roskilde Festival. Or, if I was interested in finding broadcasts about the city Roskilde, but not about Roskilde Festival, I can take away the quotation marks and write “Roskilde NOT Festival”. To exclude Danish compound words like festivalstemning (festival atmosphere) or festivalgæster (festival guests), I can truncate the word “Festival” by adding an asterisk to the end of the word festival, which returns 14 fewer results.

In the channel filter panel you can see how the programs are distributed by channel. Most broadcasts are from the Danish Broadcasting Corporation’s channel P1.

To get an overview of how the results are distributed by time, I can use the “instil tid” or “set time” function. Here I can zoom in on a decade, year, month and a date, and I can zoom out again and filter my search to, for example, the 1970s.

Before proceeding with a new search, it is important to clear previous searches and filters, so that you do not – without noticing  – filter a new search by a specific time period, media type or channel.

This was an introduction to the search function on Larm.fm. If you are interested in learning more about the projects and metadata of Larm.fm, please see our other tutorials.

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