Comments on: Does ‘seam carving’ generalize? http://craigrandall.net/archives/2008/08/does-seam-carving-generalize/ Thoughts about software architecture, books and life Wed, 04 Jan 2012 18:00:35 +0000 hourly 1 http://wordpress.org/?v= By: Craig Randall http://craigrandall.net/archives/2008/08/does-seam-carving-generalize/comment-page-1/#comment-20577 Craig Randall Fri, 29 Aug 2008 17:40:33 +0000 http://craigrandall.net/archives/2008/08/does-seam-carving-generalize/#comment-20577 Thanks for this, Michael. I frequently use a technique I know as "time shifting" to play back podcasts, for example, at 1.5x thereby reducing the time required for me to get the gist of various subjects. Cheers... Thanks for this, Michael. I frequently use a technique I know as “time shifting” to play back podcasts, for example, at 1.5x thereby reducing the time required for me to get the gist of various subjects. Cheers…

]]> By: mhackney http://craigrandall.net/archives/2008/08/does-seam-carving-generalize/comment-page-1/#comment-20575 mhackney Thu, 21 Aug 2008 13:40:34 +0000 http://craigrandall.net/archives/2008/08/does-seam-carving-generalize/#comment-20575 Craig, there is a comparable technique for audio called <a href="http://www.dspdimension.com/admin/time-pitch-overview/" target="_blank" rel="nofollow">Time Stretching</a> which allows altering the playback speed of the audio without affecting its pitch. It is commonly used by the radio and television industries to cram more audio into a 30 second commercial slot (like those annoying disclaimers at the end of auto commercials). Time Stretching is also used by amateur musicians (like me!) to slow down music in order to learn to play it. An open source implementation can be found <a href="http://www.xs4all.nl/~mp2004/bp/" target="_blank" rel="nofollow">here</a>. I use a product called Amazing Slow Downer on the Mac. Time Stretching is a very effective technique for shortening audio playback times. I have been advocating capturing business meeting recordings for many years. (a pet peeve of mine is that a lot of corporate knowledge is created in meetings but is not always captured and shared). This technique can be used (along with silence clipping) to significantly shorten the playback time of useful information from an audio recording - without doing speech to text. In the mobile delivery of audio, image and video content, these Time Stretching and Seem Carving techniques are very powerful. Craig, there is a comparable technique for audio called Time Stretching which allows altering the playback speed of the audio without affecting its pitch. It is commonly used by the radio and television industries to cram more audio into a 30 second commercial slot (like those annoying disclaimers at the end of auto commercials). Time Stretching is also used by amateur musicians (like me!) to slow down music in order to learn to play it. An open source implementation can be found here. I use a product called Amazing Slow Downer on the Mac.

Time Stretching is a very effective technique for shortening audio playback times. I have been advocating capturing business meeting recordings for many years. (a pet peeve of mine is that a lot of corporate knowledge is created in meetings but is not always captured and shared). This technique can be used (along with silence clipping) to significantly shorten the playback time of useful information from an audio recording – without doing speech to text.

In the mobile delivery of audio, image and video content, these Time Stretching and Seem Carving techniques are very powerful.

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