AppPriceDataObserved data
AppPriceData
Marcus Painter
Speed of sound calculations for live sound engineers.
The latest observed download price is $4.99. Open the official App Store link to confirm the current checkout price.
Current observed download price for the selected storefront. Open regional pricing to compare converted prices across countries.
Items currently visible on Apple’s public App Store page. This may not be the complete App Store Connect catalog.
Source: Apple public App Store page · publicly visible items only
Speed of sound calculations for live sound engineers.
Now with metric or US units (meters or feet).
Temperature in Celsius or Fahrenheit.
The Speed of Sound
Calculated using the temperature, humidity and pressure.
Delay Time and SPL
The time taken to travel a given distance and the drop in SPL with distance.
Frequency Attenuation
The amount attenuated by each frequency band depends on temperature, humidity, and pressure. Only frequencies above 2kHz are significantly affected. The attenuation in dB takes into account the distance.
Wavelength
Calculates the full, half and quarter wavelengths for a given frequency. This is useful when designing sub arrays.
Period
The period for a given frequency for full, half and quarter periods.
Make a Donation
Support further development by making an optional small (or large) donation. Thanks!
Quick answers based on the latest observed App Store data.
The latest observed download price is $4.99. Open the official App Store link to confirm the current checkout price.
Apple’s public page currently shows 0 purchase items in this storefront. The public list may be incomplete.
Yes. App Store prices can vary by storefront, currency, taxes, and developer pricing. AppPriceData currently has 1 regional observations.
