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The Transient Perfect Subtractive Delay
for Higher Order Crossovers is a utility for calculating a complimentary High Pass response with
approximately Linear Phase from a Minimum Phase Low Pass, via a user controlled delay. The use of delay results in higher order high pass
filters than would be obtained using the more common Constant Voltage subtractive approach, without delay, based on the same low pass filter.
The utility builds standard higher order Bessel, Butterworth, Linkwitz-Riley and Truncated Exponent filter coefficients, and derives a
Group Delay from a Low Pass filter. It lets the user select the Low Pass filter type and filter order, adjust the coefficients, and adjust the
delay to derive a subtractive High Pass transfer function. It graphs and writes the Magnitude and Phase
of the Low Pass and derived High Pass into files in FRD format as a target
response template for other acoustic design programs. It also can save a picture of the
graph in gif format, and has a Load/Store Librarian for Filter/Delay parameter
combination management.
Current
Version 1.10 Date: Nov 2002 To Download Transient Perfect Designer (A Self Extracting Archive for Windows containing an Excel Spreadsheet) Excel File Size 1983 k - Download Size 496 K |
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This version is Free for personal and DIY use only. |
