Many software packages are capable of concatenating individual character and gene files into such sets (e.g. Modern phylogenetic analyses typically infer relationships using multi-gene datasets. SequenceMatrix is Java-based and compatible with the Microsoft Windows, Apple MacOS X and Linux operating systems. One tool lists identical or near-identical sequences within genes, while the other compares the pairwise distance pattern of one gene against the pattern for all remaining genes combined. SequenceMatrix also includes two tools that help to identify sequences that may have been compromised through laboratory contamination or data management error. Data matrices can be re-split into their component genes and the gene fragments can be exported as individual gene files. Entire taxa, whole gene fragments, or individual sequences for a particular gene and species can be excluded from export. SequenceMatrix also creates taxon sets listing taxa with a minimum number of characters or gene fragments, which helps assess preliminary datasets. Matrices with hundreds of genes and taxa can be concatenated within minutes and exported in TNT, NEXUS, or PHYLIP formats, preserving both character set and codon information for TNT and NEXUS files. Alternatively, GenBank numbers for the sequences can be displayed and exported. A multi-gene dataset is concatenated and displayed in a spreadsheet each sequence is represented by a cell that provides information on sequence length, number of indels, the number of ambiguous bases (“Ns”), and the availability of codon information. Genes are concatenated by dragging and dropping FASTA, NEXUS, or TNT files with aligned sequences into the program window. Different story if you have dozens of albums or hundreds of tracks.We present SequenceMatrix, software that is designed to facilitate the assembly and analysis of multi-gene datasets. Definitely a viable method if you don't have more than a few albums or a couple of dozen tracks you want to process. but not too bad for building and saving 43 minutes of audio. Total time for this, including all the importing and the big export, was about 4:10. This made it very, very easy to concatenate the songs right up against each other with no gaps and no overlap. I didn't know that tool would "snap" to the end, which it does. Instead of cut and paste, I used the time shift tool to move each track to the end, and then on to the next track, moving it to the end. That opened the tracks as separate audacity tracks in the same window, as opposed to individual windows in the previous experiment. Then I tried the method of choosing "import" from the file menu on all 10 tracks at once. About a minute of this was opening the files and about a minute was exporting the big concatenated file at the end Doing it one way, by opening all 10 tracks and then cut and pasting them, it took me about 5:20 to do everything. I used Pink Floyd's Dark Side Of The Moon as a test. Just for fun I just played with Audacity for concatenating audio files.
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