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Features
TESTtone Test
Signals |
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Track 1:
Music - Piano (concert grand), Cymbals and Bells. Covers a lot
of frequency range, from sustained low frequency notes to high
frequency percussive. Very nice track and about 2 minutes long.
The purpose of this track is to provide the user with a known
piece of music, impeccably recorded, which will energize most of
the spectrum. We recommend starting an evaluation by listening
to music and voice before measuring, and we have kept this
format for the disk. |
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Track 2: Speech - Dry,
clear and about a minute long. The speaker's voice does not have
much high frequency content, which makes it tougher to hear.
REAL WORLD. |
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Track 3: 1 kHz Test Tone.
Handy to have a 1kHz tone on a disk for any number of tests from
looking at meters to just making sure a driver is driving |
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Track 4: 63 Hz Low
Frequency band limited noise. |
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Track 5: 125 Hz Low
frequency band limited noise. |
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Track 6: 6 kHz High
Frequency band limited noise. Used very effectively in Level II
TEF Class to isolate areas with strong reflections. Not PET but
very useful. |
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Track 7: LFE Sweep - 20 Hz
to 120 Hz slow sweep. Find rattles, LFE performance and LFE
crossover. |
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Track 8: LFE/Mid Sweep - 20
Hz to 500 Hz slow sweep. Energize the modal region, crossovers,
box interactions. |
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Track 9: Mid/Hi Sweep - 100
Hz to 5 kHz medium sweep. Primary speech range, crossovers. We
did not do sweeps to higher frequencies, as there is the concern
that damage could inadvertently be done to compression drivers,
small dogs....etc. |
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Track 10: Broadband Pink
Noise both channels. RTA, walk the comb filters. |
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Track 11: Broadband Pink
Noise left channel |
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Track 12: Broadband Pink
Noise right channel |
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Track 13: Gated Pink
Noise, 10 seconds on and gate off. Energize the room and listen
to it, or measure it, decay. |
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Track 14: Music. Repeat of
Music from Track One
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