Il giorno Mon, 12 Nov 2012 14:39:17 -0800 "Len Ovens" <len@xxxxxxxxxxxxx> ha scritto: > > On Mon, November 12, 2012 12:10 pm, Asa Marco wrote: > > Hello list, > > > > For the first time in my life I need to work with huge recordings, I > > would like to understand how much memory and computing power is > > required to handle it on a linux box with Ardour. > > > > The recording, retrieved from an Alesis hd24, will be about 1 hour > > and a half long, 24 channels, 44.1KHz, 16bit, > > > > What are the minimal requirements to work with it? > > > > If I choose sample rate and bit depth to be 48kHz/24bit, will it > > require much more resources (other than disk space)? > > To change things to 48k you would have to do that outside of ardour. I > would suggest against doing that except as a final step after mixdown > as any time differences from track to track in the resample would be > magnified by such a long track. Even in shorter cases stereo imaging > could be affected. It would be best to leave 44100 if at all > possible. If the end product _has_ to be 48k then expect a (hopefully > small) loss in quality. I would choose between 44.1KHz and 48KHz on the multitrack recorder, so outside of Ardour. Since audio sources are radio microphones whose specs report a band of 40-18000Hz I think 48Khz would be an unuseful oversampling (provided a small use of DSP), am I wrong? > > Ardour will switch it to 32bit float internally whatever the input is > to allow mixing headroom. 24 bit is chosen at export time. However, > again this would be decided by the final delivery route. > Thank for this information, i didn't know of this behaviour. -- Asa Marco <aesir.ml@xxxxxxxxx> 朝 _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
