Hey,
I like to measure the sound pressure (Lp) and looked for some typical products. After comparing several products that are advertised for "home pro/studio audio", I later found this:
www.kern-sohn.com
Compared to competitors (like AZ 8922) I noticed:
- Advertised up to 12.5kHz (rather than 8 ... 10 kHz with competitors)
- A+C+F-weightings (rather than A+C-weightings with competitors)
- and other standard stuff like:
-- peak, hold, minx/max, Lp, Leq, Ln (percentage of all readings that are above the preset alarm value) ...
-- tripod mount, external DC, RS232 (which output may can be captured with some DIY cable rather than paying 100€ for their software + cable)
Its available for ~105€, as uncertified device. So far it seems like competitive priced with others.
I'm kinda new to this depth and auto-didactic: The very old naming convention with A, C, F weightings etc. was used up until IEC 61672-2:2003?
The newer naming convention by IEC 61672-2:2003 or ANSI/ASA S 1.4 Part 2? renames the F (Flat) to Z (Zero)?
The following 61672-2:2013 and the newest version of the Standard BS ISO 226:2023 still use Z as naming convention, so I seek to measure LpZ?
I tried to check what the F-weightings really are, but sadly I'm not in the right department to have access to the Standards.
So I tried to gather some info with online resources and the best I could do so far:
"Z- or ZERO frequency-weighting was introduced in the International Standard IEC 61672 in 2003 and was intended to replace the flat or linear frequency weighting often fitted by manufacturers. It is a flat frequency response between 10 Hz and 20 kHz ±1.5 dB.[7][failed verification] As well, the C-frequency-weighting, with –3 dB points at 31.5 Hz and 8 kHz did not have a sufficient bandpass to allow the sensibly correct measurement of true peak noise (Lpk)."
en.wikipedia.org
So I'm left wondering about the exact graph of the F- & Z-weightings to find out their difference.
and what Kern/Sauter intends to say by naming it "F" rather than "Z".
It could be the old <=2003 standard F-weighting, or the IEC 61672-2:2003 to ISO226:2023 interpretation of "Zero", or their own interpretation of "Flat".
At the end of the day, I don't know if this matters too much: Most industry products seem "fine" with the C-weightings, which only is flat between approx. 100 - 4000 hz?
I would appreciate any insights regarding the standards, as well as info's regarding Sound Meters for calibration of Measuring Mics in REW, educational resources for the theory of the topic (weightings, technicalities of measuring Lp, Leq, ... interpretation of them), and everything that may relate!
Thanks
I like to measure the sound pressure (Lp) and looked for some typical products. After comparing several products that are advertised for "home pro/studio audio", I later found this:
SAUTER Schallpegelmesser SU 130
Schallpegelmessgerät für Lärmmessungen SU 130 ✓schnelle Lieferung ✓online kaufen
Compared to competitors (like AZ 8922) I noticed:
- Advertised up to 12.5kHz (rather than 8 ... 10 kHz with competitors)
- A+C+F-weightings (rather than A+C-weightings with competitors)
- and other standard stuff like:
-- peak, hold, minx/max, Lp, Leq, Ln (percentage of all readings that are above the preset alarm value) ...
-- tripod mount, external DC, RS232 (which output may can be captured with some DIY cable rather than paying 100€ for their software + cable)
Its available for ~105€, as uncertified device. So far it seems like competitive priced with others.
I'm kinda new to this depth and auto-didactic: The very old naming convention with A, C, F weightings etc. was used up until IEC 61672-2:2003?
The newer naming convention by IEC 61672-2:2003 or ANSI/ASA S 1.4 Part 2? renames the F (Flat) to Z (Zero)?
The following 61672-2:2013 and the newest version of the Standard BS ISO 226:2023 still use Z as naming convention, so I seek to measure LpZ?
I tried to check what the F-weightings really are, but sadly I'm not in the right department to have access to the Standards.
So I tried to gather some info with online resources and the best I could do so far:
"Z- or ZERO frequency-weighting was introduced in the International Standard IEC 61672 in 2003 and was intended to replace the flat or linear frequency weighting often fitted by manufacturers. It is a flat frequency response between 10 Hz and 20 kHz ±1.5 dB.[7][failed verification] As well, the C-frequency-weighting, with –3 dB points at 31.5 Hz and 8 kHz did not have a sufficient bandpass to allow the sensibly correct measurement of true peak noise (Lpk)."
A-weighting - Wikipedia
So I'm left wondering about the exact graph of the F- & Z-weightings to find out their difference.
and what Kern/Sauter intends to say by naming it "F" rather than "Z".
It could be the old <=2003 standard F-weighting, or the IEC 61672-2:2003 to ISO226:2023 interpretation of "Zero", or their own interpretation of "Flat".
At the end of the day, I don't know if this matters too much: Most industry products seem "fine" with the C-weightings, which only is flat between approx. 100 - 4000 hz?
I would appreciate any insights regarding the standards, as well as info's regarding Sound Meters for calibration of Measuring Mics in REW, educational resources for the theory of the topic (weightings, technicalities of measuring Lp, Leq, ... interpretation of them), and everything that may relate!
Thanks
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