AppPriceData已观测数据
AppPriceData
Marcus Painter
Speed of sound calculations for live sound engineers.
仅展示当前所选商店地区的已观测下载价格。点击区域比价可查看各国家和地区的换算价格。
当前在 Apple 公共 App Store 页面可见的项目，可能不等同于 App Store Connect 中的完整目录。
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!
根据最新观测到的 App Store 数据快速解答。
最新观测到的下载价格为 $4.99。请打开 App Store 官方链接确认当前结算价格。
Apple 公开页面目前在该商店显示 0 个购买项目，公开列表可能不完整。
会。App Store 价格可能因商店、币种、税费和开发者定价而不同，目前已收集 3 个地区观测。
