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- Measurement Tools Table
| Measurement | Stimulus System | Response System |
| Acoustical Signature | Calibrated microphone driving sound card input | Spectrogram |
| Aliasing Products | Swept Sine Wave (Make Waves Generator) | Spectrum Analyzer |
| Amplifier Linearity | Triangle Wave Generator (Make Waves) | Waveform Display Window |
| Amplitude Measurements | Time Domain Signal (highlighted by user) | Waveform Statistics in Forensics Menu |
| Amplitude vs. Frequency | Any signal requiring analysis | Spectrum Analyzer |
| Amplitude vs. Time | Any signal requiring analysis | Waveform Display Window |
| Analog Tape Authentication | Look for line frequency or multiple line frequency spectral spikes or look for a higher order noise roll-off rate | Spectrum Analyzer operating in high resolution mode |
| Analog Tape Recorder Tape Head Azimuth Alignment | Azimuth Reference Tape | XY Display / Vector-scope |
| Ballistics Fingerprint | Audio Recording of ballistics events to be compared | Spectrogram |
| Average Phase Angle | Any Binaural Signal | Averaging Selection Box in the XY Display |
| Cross-talk | Sine Wave into One Channel from the Make Waves Generator; Terminate the opposite channels input with the proper impedance | Spectrum Analyzer or VU Meters |
| DC Offset | Terminate input with proper input impedance | Waveform Display Window |
| Dynamic Range | Any combination of signals requiring analysis | VU Meters with Peak Hold |
| Fall Time | Any signal requiring analysis | Waveform Display Window and Time Display with Markers |
| Frequency | Any signal requiring analysis | Spectrum Analyzer |
| Frequency & Amplitude vs. Time | Any signal requiring analysis | Spectrogram |
| Frequency Distribution | Any signal requiring analysis | Spectrum Analyzer |
| Frequency Ratio | Any signal requiring analysis | XY Display / Vector-scope |
| Frequency Response | Swept Sine Wave or Random Noise made by the Make Waves Generator | VU Meter (when using the Swept Sine Wave) or the Spectrum Analyzer (when using the Random Noise Generator) |
| Hard Disc Recording Time Available | Any signal being recorded | Recording Function |
| Instantaneous Frequency | Any signal requiring analysis | Waveform Display Window and Time Display with Markers. Calculate: F= 1/t |
| Inter-modulation Distortion | Dual Sine Wave Tones made with the Make Waves Generator and summed together with “Paste Mix” | Spectrum Analyzer |
| Left Channel vs. Right Channel | Any signal(s) requiring analysis | XY Display / Vector scope |
| Linearity | Triangle Wave created using the Make Waves Generator | Waveform Display Window |
| Noise Floor | Properly Terminated Input | Spectrum Analyzer |
| Peak Amplitude | Any signal requiring analysis | VU Meter using the Peak Hold feature |
| Phase Angle | Any pair of signals having coherence | XY Display / Vector-scope |
| Phase Margin of equipment having a control loop system (1st& 2nd order) | Stereo Square Wave Generator (Make Waves) | Time display window (dampening factor of ‘ring-out’) |
| Phase vs Time | Two Channels with respect to one another | Forensics Menu – View Phase vs Time |
| Power Amplifier Frequency Response vs. Output | Swept Sine Wave (Make Waves) | Proper Loading resistor and True RMS reading Voltmeter |
| Real Time of an Event | Any signal requiring analysis | Timer Recording with Time and Date Stamping |
| Recording Position | Any signal being recorded | Recording Function |
| Relative Amplitude (Scalar) | Any combination of signals requiring analysis | VU Meter |
| Relative Loudness | Any combination of signals requiring analysis | VU Meter |
| Rise Time | Any signal requiring analysis | Waveform Display Window and Time Display with Markers |
| Room Acoustical Balance | Random Noise Generator (Make Waves) | Spectrum Analyzer |
| Room Acoustical Propagation Delay & Reflection | Calibrated microphone driving a sound card input & an Impulse source like a handclap or an impulse created with the “Pencil” feature | Waveform Display Window, Markers and Time Display Feature |
| Signal to Noise Ratio | Sine Wave @ 0 dB vs. Noise Floor | Spectrum Analyzer |
| Slew Rate | Square Wave Generator (Make Waves) | Waveform Display Window and Time Display with Markers |
| Sound Card Performance | Please Refer to Application Note 2 (AN-2) | Please Refer to Application Note 2 (AN-2) |
| Sound Card Recording Level / Clipping | Audio signal applied to sound Card | Recording Function with recording VU meter and peak indicator |
| Stereo Separation | Sine Wave into One Channel from the Make Waves Generator; Terminate the opposite channels input with the proper impedance | Spectrum Analyzer, VU Meters or X-Y Display |
| Tape Recording Speed | Any analog tape recorded signal | Spectrum Analyzer |
| Time Derivative (dV / dt) | Any signal requiring analysis | Waveform Display Window and Time Display with Markers |
| Time Interval between Events | Markers | Time Display Feature |
| Total Harmonic Distortion (% THD) | Any Audio Device requiring performance testing using a Sine Wave stimulus (Make Waves) | Spectrum Analyzer with “Show THD” function and “Show Peak” enabled |
| Transient Response | Any Active Audio Device with a control loop with a Square Wave applied (Make Waves Generator) | Waveform Display Window |
| Turntable RPM | Neon or Fluorescent Lamp connected to a known Frequency Source | Printable Strobe discs found in the your software. |
| Voice Print comparison | Audio Signal of Voice(s) to be compared | Spectrogram |
| Waveform Statistics | Forensics Recordings | Histogram or Histogram vs Time |
| Whisper Amplifier/Enhancer | Forensics Audio Recordings with very Weak “far” parties | Whisper Enhancer (Forensics Version Only) |
| Wow and Flutter | Sine Wave (Make Waves) | Spectrum Analyzer |