R o o m
c o r r e c t i o n
5 0
Repeated measurements due to poor SNR
Measurements are retried until the SNR is larger than 39 (35 for
subwoofers) or the maximum number of retries have been made.
The maximum number of times each measurement will be retried
due to poor SNR can be set in the
Preferences
dialogue box,
accessed from the
Options
menu:
The default number of retries is 3. If the measurements are
consistently giving poor SNR figures you can reduce the number of
retries. However, it is better to follow the steps described below to
improve the measurement conditions. The better the measurement
the more accurate the results when calculating the filters for a
profile.
SPL meter is set on a low band
The following graph shows an impulse response obtained when a
Radio Shack SPL meter was set on the 60dB band. The SNR value
was only 22:
SPL meter is set on a high band
The following graph shows an impulse response obtained when a
Radio Shack SPL meter was set on the 120dB band. The tail of the
response is generally noisy. The SNR value was 39 but the Power
was only –48:
Summary of Contents for Configuration Program
Page 1: ...Meridian Configuration Program Guide...
Page 4: ...C o n t e n t s i v...
