This corrected  CD contains 7 files in addition to this 
README file. There is one PostScript file that includes the 
body of the supplement and six ASCII files that include
listings of data presented graphically in NASA TP 3669.

Numeric data in the ASCII files are read from left to right
For each spectra there are 821 values of SPL corresponding
to frequencies from 0 through 2000 Hz (2.438 Hz increments).
A brief description of each file is given below. 


tp3669sup.ps

	This PostScript file includes cover, title page,
	figures, text, and test matrix tables (Tables 1 and 2).
	It is 6 pages long.


SuppTab3

	ASCII Listing of unsteady pressure spectra presented 
	in Figure 12 in TP3669 (SPL from Transducer 1 for 
	Cavity width-to-height ratio (w/h) of 1. There are
	seventy-five data sets given for various
	length-to-height (l/h) ratios and six free-stream 
	Mach numbers. Each data set is preceeded by a record 
	indicating the length-to-height ratio, i.e. 

	"Cavity length-to-height ratio =  2.0". 

	All data for a given Mach number are grouped together
	and are preceeded by a record indicating cavity depth,
	width and free-stream Mach number, i.e.

	"Cavity depth = 2.4in, Cavity width = 2.4in, Mach = 0.20". 
	
	This file is 9165 lines long.


SuppTab4

	ASCII Listing of unsteady pressure spectra presented 
	in Figure 13 in TP 3669 (SPL from Transducer 1 for
	w/h = 4.) There are ninety-two data sets given for 
	various l/h values and six free-stream Mach numbers.
	The format of this file is similar to SuppTab3.
	The file is 11239 lines long.


SuppTab5

	ASCII Listing of unsteady pressure spectra presented 
	in Figure 14 in TP 3669 (SPL from Transducer 1 for
	w/h = 8.) There are ninety data sets given for
	various l/h values and six free-stream Mach numbers
	The format of this file is similar to SuppTab3.
	This file is 10995 lines long.


SuppTab6

	ASCII Listing of unsteady pressure spectra presented 
	in Figure 15 in TP 3669 (SPL from Transducer 1 for
	w/h = 16.) There are ten data sets given for various
	l/h values and three free-stream Mach numbers. The
	format of this file is similar to SuppTab3.
	This file is 1229 lines long.


SuppTab7

	ASCII listing of unsteady pressure spectra presented 
	in Figure 7 of TP 3669. Data include spectra from all
	available transducers (except that from Transducer 1 
	which is included in SuppTab4) in a representative resonant
	cavity (l/h = 10.0, h = 2.4 in., w = 9.6 in., and 
	Mach = 0.90). 
	Data are given for Transducers 2 through 9 and 11.
	Data sets are separated by a line indicating transducer
	number, i.e.

	" Transducer    2". 

	This file is 780 lines long.


SuppTab8

	ASCII listing of unsteady pressure spectra presented in
	Figure 9 of TP 3669. Data include spectra for all 
	available transducers (except that from Transducer 1
	which is given in SuppTab4) in a representative 
        nonresonant cavity (l/h = 17.5, h = 2.4 in., w = 9.6 in.,
        and Mach = 0.90). Data are given for Transducers
	2 through 11. The format of this file is similar to SuppTab7.
	This file is 866 lines long.
