ETF 5.500

Addition of clarity and definition for large room acoustics.

ETF 5.502

Substantial increase in speed of results.

ETF 5.6

Three dimensional energy - time - frequency plots.

ETF 5.611

Calculation noise in Low Frequency bandwidth tests fixed

ETF5.701

File averaging in Time & Frequency domains

ETF 5.8

New standard method of file averaging. Test signal CD.

ETF 5.9

New Sweeps (chirp) test signals. Performance enhancement licenses.