![]() ![]() ![]() But to properly analyze and improve it, I've got to understand this weird frequency response I'm seeing. My system actually sounds pretty good, with movies and with my digital piano. I connect the usb interface to Tango 24 inputs, send the test impulse signal, it gets processed on the Linux box thru my Ecasound 3-way crossover, back out thru the RME/Tango to amplifiers & speakers, into the usb interface thru a calibrated microphone, back to TrueRTA. trigger mode: automatic, normal, single pulse, slope, with delay, TV, video line, reg-. the FFt win-dow size can be selected from 16 dif-ferent options, from 128 to 4,194,304 points, while there is a choice of no less than 55 different windowing func-tions including rectangular, triangular, hanning, hamming, Blackman, Gauss-ian, cosine, Poisson and so on. I run TrueRTA on a separate laptop computer, connected to a Behringer usb interface. Professional TrueRMS digital multimeters with IrDA interface. I'm using AVLinux on a modern PC, dsp 3 channel crossover system in Ecasound (a la Richard Taylor), RME HDSP PCI sound card, Tango 24 optical interface. ![]() Maybe I should be using REW right on my Linux box instead of TrueRTA on separate laptop. Am not sure I'm going about my speaker system analysis the best way, and may have something configured incorrectly, like how the signals are clocked/synced in the Tango. I don't understand the frequency response curves I'm getting I see some periodic dips at what may be harmonic frequencies. ![]()
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