On Tuesday 05 April 2005 11:26 am, Ralph Giles wrote: > On Tue, Apr 05, 2005 at 02:26:03AM -0500, Hal Vaughan wrote: > > Is there a list somewhere of "standard" encoding rates? I know, for > > example, CDs are encoded at 44100, as is a lot of digital sound, but I've > > seen programs that specify different levels of quality (like radio, > > phone, tape, CD) and I'd like to know if there are some encoding rates > > that are accepted as standardized for recording at different levels of > > quality. > > Well, where analog formats are concerned these are estimates, and in > there is no *standard*. "CD quality" is 44100 Hz stereo with 16 bits per > channel. FM radio is limited to 17 kHz iirc, so in theory you could > sample at 32 kHz, but in practice people usually use 44.1 or 48 kHz and > just lowpass filter. AM radio is lower quality (mono) but I don't know > what the digital equivalent would be. Telephone is nominally 8 kHz mono > (i.e. really bad) though I think the use of digital voice codecs in the > last 20 years may have improved on this a bit. > > Maybe someone else can comment on tape fidelity. I think the issue there > has more to do with recording artefacts than bandwidth. > > FWIW, > -r
The numbers are helpful, but I was trying to use those terms as examples. �I guess I mean, are there encoding rates that are more or less standard? �For example, if an expert is recording at a lower quality, are they likely to set it at, say, 10000 samples per second, or more likely to use 8000 samples per second? �Or are there no standard rates and most files are just encrypted at whatever rate the person creating them felt was a good balance of quality vs. file size? Does that make sense? Hal _______________________________________________ Flac mailing list [email protected] http://lists.xiph.org/mailman/listinfo/flac
