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About Lecture Recorder

This program allows you to record lectures and attach text notes as a summary. 

To make a lecture summary several rich-text fields are provided: course, subject, date, lecturer, digest and notes. There is also an option to print the summary. 

Built-in audio recorder comes with real-time OGG audio compression, an editor for making cut-outs, voice operated recording mode and transcription playback mode. You choose the sound quality for recording. On low end there is 8-bit mono sound at 11KHz, on high end 16-bit stereo is offered at 192KHz, plus a number of combinations available in between. 

The program keeps both text and audio in the same lecture file that you can easily share. You can export recordings to standard sound files and use them in other programs or even import existing sound files. Lecture Recorder can work with all sound sources you have on your computer.

The following table shows some estimates on how big an uncompressed lecture file will be depending on the quality and length of recording.

8-bit mono recording:
  44KHz - CD quality 22KHz - radio quality 11KHz - telephone quality
15 minutes
38MB
19MB
9.5MB
30 minutes
76MB
38MB
19MB
1 hour
152MB
76MB
38MB
2 hours
304MB
152MB
76MB
12 hours
1.82GB
912MB
456MB

16-bit stereo recording:
  44KHz - CD quality 22KHz - radio quality 11KHz - telephone quality
15 minutes
152MB
76MB
38MB
30 minutes
304MB
152MB
76MB
1 hour
608MB
304MB
152MB
2 hours
1.22GB
608MB
304MB
3 hours
1.82GB
912MB
456MB

Notes:
  - if your microphone can not pick up lecturer's voice try to find one designed for conferences
  - single lecture file size can not exceed 2GB
  - if you are recording to lecture file with audio compression and the result is chunky that means your computer does not have enough power for performing real-time compression; it can also happen on more powerful computers if during recording you perform some other tasks that require intensive CPU and/or hard disk engagement.

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