David McBean wrote me Friday to announce a new version of his horn analysis program, Hornresp v.5.0.Improvements include:
1. Multiple-document interface (MDI)
2. Electrical impedance and diaphragm displacement charts
3. Changed horn mouth acoustical impedance model
4. Extension of chart frequency range down to 10 hertz
5. Automatic scaling of chart Y-axis
6. Exporting of horn and chart data
7. Masking of air chamber resonances
8. Variable input signal voltage
9. Optional saving of record changes
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