The SoundPro TechBench firmware contains an extensive set of tools for test, measurement and troubleshooting of analog audio equipment. It includes:
1. Level/Frequency Meter
2. Signal Generator
3. Amplitude Sweep
4. Distortion Meter THD and IMD
5. Phase Meter
6. Crosstalk Meter
Level/Freq. Meter: Measures two channel left and right audio input levels from -120 dBu to +40 dBu and sine wave frequency from 10 Hz to 32 kHz. Measures dBu, dBV, Vave, Vrms, Vp-p and dBr.
Signal Generator: Generates audio test signals including sine wave to 22 kHz, square wave, pink noise and white noise with variable output level. Also outputs octave or 1/3 octave band limited pink noise.
Amplitude Sweep: Plots the frequency response of audio equipment by sweeping the generator through its frequency range and graphing the amplitude input level of each 1/12 octave.
Distortion Meter: Measures incoming signals.
– Distortion Meter THD: Measures THD+N (Total Harmonic Distortion plus Noise) of an incoming signal by comparing the level of the incoming signal with the level of harmonics and noise.
– Distortion Meter IMD: Measures IMD (Inter-modulation Distortion) of an incoming signal by outputting a multi-frequency output test tone and measuring the distortion components. Performs SMPTE IMD and DIN IMD tests.
Phase Meter: Measures the phase difference between left and right input sine waves of the same frequency.
Crosstalk Meter: Measures the amount of dB isolation between the left and right input audio sources or the signal bleeding from one channel into the other.
