tomwalters@0: .TH FBANK 1 "1 September 1993"
tomwalters@0: 
tomwalters@0: .SH NAME
tomwalters@0: fbank \-    Print centre-frequency and bandwidth information for a given
tomwalters@0: gammatone filterbank.
tomwalters@0: 
tomwalters@0: .SH SYNTAX 
tomwalters@0: fbank [options] [file]
tomwalters@0: 
tomwalters@0: .SH DESCRIPTION
tomwalters@0: Print centre-frequency and bandwidth information for a given
tomwalters@0: gammatone filterbank on the stdout.
tomwalters@0: 
tomwalters@0: Parameters specifying a filterbank may be given as arguments
tomwalters@0: (channels, mincf, maxcf, dencf, bwmin, quality), or may be read from
tomwalters@0: an AIM output header if the option `input=on'.
tomwalters@0: 
tomwalters@0: Centre-frequency and bandwidth information is printed for a selected range of
tomwalters@0: filterbank channels, specified using the `freq' option:
tomwalters@0: 
tomwalters@0: .nf
tomwalters@0: 	    freq=a[-b]
tomwalters@0: .fi
tomwalters@0: 
tomwalters@0: where `a' and `b' are channel numbers: 0,2,3,... (the lowest centre-frequency
tomwalters@0: channel has the lowest channel number, 0).
tomwalters@0: The upper limit `b' is optional, and when it is missing then the range of
tomwalters@0: channels is a single channel, otherwise `a' and `b' are inclusive limits.
tomwalters@0: The strings "min" and "max" are recognised as extreme limits
tomwalters@0: ("min" is the lowest frequency channel, "max" is the highest frequency channel).
tomwalters@0: Either range limit can take frequency units (Hz or kHz), in which case it
tomwalters@0: is converted to a channel number using the "closest" channel number
tomwalters@0: in the filterbank to the specified centre-frequency.
tomwalters@0: 
tomwalters@0: .nf
tomwalters@0: For example:
tomwalters@0: 
tomwalters@0: 	freq=5         channel 5
tomwalters@0: 	freq=1kHz      channel number with centre-freq closest to 1kHz
tomwalters@0: 	freq=max       highest centre-freq channel
tomwalters@0: 	freq=10-max    channel 10 to the highest centre-freq channel
tomwalters@0: 	freq=min-15    channel 0 to 15
tomwalters@0: .fi
tomwalters@0: 
tomwalters@0: .SH "SEE ALSO"
tomwalters@0: options hdr edframe
tomwalters@0: 
tomwalters@0: .SH COPYRIGHT
tomwalters@0: .LP
tomwalters@0: Copyright (c) Applied Psychology Unit, Medical Research Council, 1995
tomwalters@0: .LP
tomwalters@0: Permission to use, copy, modify, and distribute this software without fee 
tomwalters@0: is hereby granted for research purposes, provided that this copyright 
tomwalters@0: notice appears in all copies and in all supporting documentation, and that 
tomwalters@0: the software is not redistributed for any fee (except for a nominal 
tomwalters@0: shipping charge). Anyone wanting to incorporate all or part of this 
tomwalters@0: software in a commercial product must obtain a license from the Medical 
tomwalters@0: Research Council.
tomwalters@0: .LP
tomwalters@0: The MRC makes no representations about the suitability of this 
tomwalters@0: software for any purpose.  It is provided "as is" without express or 
tomwalters@0: implied warranty.
tomwalters@0: .LP
tomwalters@0: THE MRC DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING 
tomwalters@0: ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL 
tomwalters@0: THE A.P.U. BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES 
tomwalters@0: OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, 
tomwalters@0: WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, 
tomwalters@0: ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS 
tomwalters@0: SOFTWARE.
tomwalters@0: