Minirator generates pure sine waveforms at user-selectable frequencies and amplitudes. The frequency steps interval can be set to as low as 0.1Hz.
- Selectable frequencies from 10 Hz to 20 kHz
- Level range from -80 to +18 dBu
The start/stop frequency, step time and a step resolution as fine as 1/12th octave can be adjusted. Audio analyzers automatically trigger to this signal and record the frequency response of a device under test.
The chirp signal is a logarithmic or linear gliding sine sweep signal with continuous frequency increase over time. Typical applications are recording of frequency responses, impulse response measurements and acoustic assessment of rooms.
Delay Test Signal
This is the designated reference signal to measure the acoustic propagation delay time from speaker to speaker in e.g. churches or auditoriums. It suits the accurate setup of delay line arrangements, thus the directionality of the signal source will be optimized. Testing is carried out in combination with a Sound Level Meter.
Pink & White Noise
Pink or white noise is synthesized with high spectral density, normal amplitude distribution and with infinite cycle duration. The Minirator also generates gated pink noise (on/off cycle 1 - 9 seconds) for convenient Reverberation Time measurements with the Sound Level Meter.
Test signal for measuring the polarity of speakers and audio signals. The saw-tooth waveform is an ideal stimulus with only moderate stress to speakers. Testing is carried out in combination with the XL2 Audio and Acoustic Analyzer or Minilyzer ML1.
User Wav-Files *.wav (MR-PRO only)
The Minirator MR-PRO offers a range of additional factory test files, e.g. for speech intelligibility verification. You may store additional user test signals as uncompressed wav-files in the MR-PRO memory. The selected file is seamlessly looped. Wav-file exchange is simplified via the USB port.
- Pre-installed: STIPA, Voice, Music
- User downloads at the support page:
- Third- and Octave Pink Noise
- Square Wave: 10 Hz - 5 kHz
- Sine: 1 Hz - 10 Hz
- Power Test acc. IEC60268-5
- NormSignal acc. EN60065
- Cinema Headroom Test