Rational Acoustics has a great guide for anyone looking to put together a measurement rig. That being said, if lower end microphones are used variance between them must be taken into account when comparing data from different microphones. For system tuning, it's definitely possible to achieve satisfactory results with the DBX or RTA-420. If you're measuring the response of a loudspeaker in an anechoic chamber for R&D purposes, you'll want a microphone that will color the data as little as possible. The quality of the measurement mic needed is largely determined by the context of its use. You're able to buy them by the pallet from a supplier in Asia, and the companies put their respective logos on them. Another interesting thing is that the Rational Acoustics RTA-420 and the DBX RTA-M are exactly the same microphone, a PHM919. This should give you a good idea of the variance we're talking about. Here is a chart of 85 ECM8000's compared to each other. DBX or Behringer will purchase the capsule graded lower, with a +/- 6 dB variance from reference, for a lower price than the higher graded capsules. Earthworks will purchase capsules of a certain grade, say with +/- 1.5 dB variance from reference (numbers for example only). After the capsules are manufactured, they are measured and graded based on their deviation from the desired frequency response. While it is true that some measurement microphones use the same capsules (RTA-M/Earthworks), what separates them in price is the consistency from microphone to microphone found in the more expensive brands. r/broadcastengineering - Broadcast Engineering.r/projection_mapping - Projection Mapping.You might find these other subreddits useful: These rules are implemented at the moderators' discretion. No RF Broadcasting Advice beyond 'Consult a Professional/FCC Lawyer'Įquipment Recommendations must show effort. No politically or religiously focused posts/comments No Personal Information, Including Artist or Company NamesĪll 'office photos' must be posted in the weekly office pics thread. Go to the No Stupid Questions Thread if you need help.Ībsolutely no advice for rigging/electrical/life safety/ is allowed beyond 'Consult a professional.'ĭo not illegally distribute media such as vendor-locked software or books.
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