Noise Calc vs MeasureMate

Noise Calc is a calculator designed to quickly estimate noise levels in outdoor environments and semi-reverberant fields. It is a useful tool for acoustic technicians in the field, as well as for other professionals dealing with machine noise. We have specifically designed a section for those who design and install heat pumps, air handling units (AHUs), chillers, and other noisy outdoor machinery. The first section performs logarithmic summation in decibels: this is useful, for example, when multiple machines are nearby, and their known sound energy levels need to be summed (dB values must be added with dB, or dBA with dBA; sound power levels (Lw) can be summed together; sound pressure levels (Lp) can also be summed, but only if measured at the same distance from the source). The second section performs a logarithmic difference in decibels: this is useful when the ambient pressure level and residual pressure level are known, helping to determine the energy level of the sound source at a given point. The third section evaluates sound pressure attenuation with distance: if the pressure level (Lp) in decibels is known at distance d1, the result at d2 can be estimated (however, measurements taken with a phone should be avoided, and care must be taken to ensure that d1 is not too close to the source and that d2 is not affected by sound reflections). The fourth section evaluates sound propagation in free-field conditions, considering the sound power level (Lw) of the source and whether it is near one, two, or three surfaces (excluding reflections from other objects). The fifth section estimates the noise reduction effect of a sound-insulating barrier. It performs a simplified frequency-by-frequency calculation and returns the number of decibels by which the noise will be reduced (if the frequency is unknown, 500 Hz is typically used). The sixth section is particularly useful for technicians and installers of outdoor machinery. Given the data from the technical sheet (either power or pressure at the manufacturer-declared distance), the machine's position near one or more surfaces, and the distance to the nearest neighbor's window, the app will indicate whether there are significant issues in complying with municipal noise zoning regulations). The seventh section allows for a differential limit calculation. The eighth section evaluates sound propagation in a semi-reverberant field.

Built by Jakup Andrias Knudsen, solo developer and live sound engineer. 20 years of mixing FOH and monitors and tuning PA systems. MeasureMate: the live sound engineer’s remote for Smaart®, Meyer Sound Galaxy and 10EaZy. Walk the room and keep your measurements in your hand. MeasureMate connects to your rig over Wi-Fi so you can measure, monitor and tune from the listening position. SMAART® REMOTE (V8 & V9) • Full rendering of spectrum, transfer function and SPL readouts • Two-channel spectrum for source vs. position or dual-input comparison • DiffSpec: a colour-mapped spectrograph of the difference between two inputs • Coherence masking hides unreliable phase and magnitude data below your threshold • Phase wrap boundaries you can toggle for accurate delay alignment • Custom hotkey board with Signal Generator control • Capture a new measurement in four taps or fewer • Supports Smaart® V8 (DI2) and all V9 editions (LE, RT, ST & SPL) MEYER SOUND GALAXY DSP CONTROL Adjust levels, mutes, delays and polarity on Galaxy processors in real time, right next to your Smaart® trace, without leaving the measurement position. 10EAZY SPL MONITORING Watch SPL on every 10EaZy system in the venue, with alerts when a limit gets close. Try it free for 5 minutes of connected time. BUILT-IN RTA, NO SMAART NEEDED A stand-alone real-time analyser with up to 1/24-octave resolution, a 3D spectrograph waterfall, split view and SPL with calibration against an external reference meter. Use the device microphone or any compatible audio input. BUILT FOR DARK VENUES High-contrast layouts and large touch targets for low light and gloved hands. Works on iPhone and iPad. FREE TO START, PAY ONLY FOR THE SYSTEMS YOU USE MeasureMate is free to download. Smaart, 10EaZy and the full RTA are separate unlocks, so you only pay for the systems you work with. Where offered, each comes as a monthly or annual subscription or a one-time lifetime licence, and Smaart + 10EaZy is sold as a bundle. Prices for your country are listed under In-App Purchases on this page. Galaxy control is included when connecting to Smaart systems. WHAT YOU GET FREE - Built-in RTA at 1/6 octave, no weighting - 3D spectrograph preview for 30 seconds each time you turn it on, then back to 2D - SPL readout for 5 minutes per launch - SPL calibration, kept until you close the app TRYING 10EaZy You get 10 5-minute trials. It starts when you choose it and only counts while a system is connected. A countdown shows in the nav bar and turns orange in the last minute. When it ends, every system disconnects. For a longer test, start the free trial on a subscription. THE RTA LICENCE Unlocks finer resolutions and weightings, the 3D spectrograph and SPL without time limits, and keeps your SPL calibration between launches. PRIVACY MeasureMate does not track you across other apps or websites. No data is linked to your identity. The App Privacy section on this page lists exactly what is collected. DISCLAIMER MeasureMate is an independent third-party app and is not affiliated with or endorsed by Rational Acoustics LLC, Meyer Sound Laboratories or 10EaZy. It does not include a Smaart® licence. A valid Smaart® licence from Rational Acoustics LLC is required to use the Smaart® features. Smaart® is a registered trademark of Rational Acoustics LLC. Meyer Sound and Galaxy are trademarks of Meyer Sound Laboratories, Inc. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/