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all price ranges. The microphone should be positioned 1 meter in front of the
speaker that is measured, in the axis of the high frequency tweeter.
Better results can be achieved when 2, 3 or even more microphones are used.
These should be calibrated and placed on a fixed array to measure also the off-axis
response of a loudspeaker. The data of all microphones can be merged in the
measurement tool to analyze the complete behavior of a speaker.
Tuning objective
In contrast to classical surround sound system systems, for which the same level and
delay is active at the reference listening position (sweet spot), the Sonic Wave 1
expects that all speakers provide the same amount of power into the listening
environment. This is the basic rule for tuning. More generally, the tuning will target
to make all speakers “sound the same” in the listening environment.
Similarly, delays must not be aligned towards the reference point but so that all
speakers exhibit the same latency. Different latencies can occur if some amplifiers
have internal AD DA converters and built-in EQ. Latency can be monitored by
measuring the impulse response of each speaker always from the same reference
distance in front of the speaker (for example 1 meter, depending on speaker type
and size) and check for propagation delay (timing of first wave front). It should be
the same for all speakers. This delay can be adjusted in the Speaker Management
panel.
Basic Tuning with SPL
For a homogenous distribution of the 3D sound field, it is important to calibrate the
output levels for all attached speakers. The SPL can be measured with a pink noise
signal. The test signal should be sent to each speaker and the SPL measured always
from the same reference distance in front of the speaker (for example 1 meter,
depending on speaker type and size).
After defining a Reference Level, this has to be applied to all speakers. To reach the
target, the level of each output can be adjusted individually in WaveDesigner, either
with Makeup-Gain in the EQ-Panel or Output Gain in Speaker Management.
Fine Tuning with EQ
On top of the basic tuning of the output levels, a more sound coloration related
tuning can be done using the Equalizer. This might be needed to compensate for
the deficiencies of the speakers and their local environment in the listening room.
