Mark Knecht wrote: >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. > > Thanks mark. I was hoping that there was a utility that I could use in a script as I have to do this many many times. I guess I could grep for "Duration<tab>: " and grab the numbers. brad >- 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, >> >> >>
