On 12/19/05, Brad Fuller <brad@xxxxxxxxxxxx> wrote: > Brad Fuller wrote: > > > Brad Fuller wrote: > > > >> I couldn't find a way to do this in ecasound, maybe there's a way to > >> do it. Here's what I want to do: > >> > >> Find the exact length of a audio file in ms. I think ecalength can do > >> this, I know it's not sample accurate, but I just need down to the > >> around 1ms. Maybe there's another option other than ecalength. sndfile-info? mark@lightning ~ $ sndfile-info Web-music/2AM-40Bars.wav Version : libsndfile-1.0.11 ======================================== File : Web-music/2AM-40Bars.wav Length : 35744300 RIFF : 35744292 WAVE fmt : 16 Format : 0x1 => WAVE_FORMAT_PCM Channels : 2 Sample Rate : 44100 Block Align : 6 Bit Width : 24 Bytes/sec : 264600 data : 35744256 End ---------------------------------------- Sample Rate : 44100 Frames : 5957376 Channels : 2 Format : 0x00010003 Sections : 1 Seekable : TRUE Duration : 00:02:15.087 Signal Max : 7.50863e+06 (-0.96 dB) mark@lightning ~ $ I cannot help with the rest. Sorry. - Mark > >> > >> Then, I want to extract a section of another file: at a specific > >> location in ms at a length of the file above. > >> > >> Then, mix that extracted segment with another file and save the > >> result to a new file. How can this be done? I don't know of a > >> utility that can extract a specific length at a specific location in ms. > >> > >> brad > >> > >> > > I forgot all about sox - looks like I could use sox to essentially > > extract a section by using the feature "trim start length" > > does anyone have any ideas on how I can accomplish this process? Has > anyone used the "trim" feature in sox? > Also, I like to be able to extract the file section (step 2 above) to > the nearest zero crossing (to prevent potential clicks). Any pointers, > even off the top of your head, would be most appreciated. > > thanks, > brad <http://www.oreillynet.com/pub/au/2184> >
