Also, check out ecasound. Thomas Stivers writes: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > On 04/14/04 10:21 AM +0100, Guy Abandon. wrote: > > Hi all. > > > > I am hoping to describe the process I am trying to achieve, so that > > suggestions of how to achieve it will give me the necessary leads. Man, Help > > and Docs assume a prior specific knowledge; if only on what tools to read > > about. > > Check out the sox package. I believe it is precompiled for slackware and > it can do all the things you have mentioned. > > > My objective is to:- > > > > 1> convert and stream a collection of .mp3s sequentially into a single .wav > > and hopefully, normalise to a lower volume level in the process. > > mpg123 -s file1.mp3 file2.mp3 >output.wav > > > 2> having done the first step into a pair of long .wav's; to them stream > > both in parallel or mix them into a third single .wav... maybe even a long > > single mp3 but that can be done as an additional later step if necessary. > > soxmix file1.wav file2.wav > > > The key bits are - to sequence a collection into a single entity, normalise > > such an entity, then mix a pair of such entities into a third single blend. > > I am not exactly sure what you're trying to get it to sound like, but > check out the -v global option and the stat effect in the sox man page. > For example when normalizing a narration I use: > > sox somefile.wav -v `sox somefile.wav -e stat -v 2>&1 |cut -d\ -f1` newfile.wav > > This uses sox to get the volume adjustment of the file and then uses that with the > volume option to set the volume as high as possible without clipping. It > sounds like you want to lower the volume on the music track, so this > isn't what you're after, but it should give you some ideas. The sox man > page is your friend. > > - -- > Clarke's Corollary: > Any technology distinguishable from magic is insufficiently advanced. > Thomas Stivers e-mail: stivers_t@xxxxxxxxxxxxxxxxx > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.2.4 (GNU/Linux) > > iD8DBQFAfdcS5JK61UXLur0RAhy1AJ47EjhqHHb8Sh5ANrzKSQnMXohZsACcCXWK > BonN7PJsBC3+IDdQCkTNTB4= > =3auM > -----END PGP SIGNATURE----- > > > _______________________________________________ > > Blinux-list@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/blinux-list -- Janina Sajka, Director Technology Research and Development Governmental Relations Group American Foundation for the Blind (AFB) Email: janina@xxxxxxx Phone: (202) 408-8175 _______________________________________________ Blinux-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/blinux-list