dB Calculator Plus vs SatFinder Uso e estatísticas

dB Calculator is a physics/math calculator designed to find sound pressure level (SPL) and sound intensity level (SIL) in decibels quickly and easily. Features: - Instant calculation - Results are copyable to other apps - Formulas are included as a reference - Support up to 16 decimal places Sound pressure level (SPL) SPL is a ratio of the absolute sound pressure to a reference level, usually the Threshold of Hearing, or the lowest intensity sound that can be heard by most people. SPL is measured in decibels (dB) due to the broad range of intensities we can hear. Formula: SPL = 20 * log (P/Pref) Where: SPL - is the sound pressure level in dB P - is the sound wave pressure, measured in pascals Pref - is the reference value of sound pressure, typically assumed to be equal to 0.00002 Pa Sound intensity level (SIL) Sound intensity is defined as the sound power per unit area, typically measured in the air at a listener's location. The basic units are watts/m² or watts/cm². Formula: SIL = 10 * log (I/Iref) Where: SIL - is the sound intensity level in dB I - is the sound intensity in watts per squared meter Iref - is the reference value of sound intensity, typically assumed to be equal to 10⁻¹² W/m² Thanks for your support, and do visit nitrio.com for more apps for your iOS devices.

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SatFinder

With SatFinder you can adjust your satellite antenna in a few seconds and with 4 simple steps: STEP 1 - CHOOSE YOUR ANTENNA Choose one of the four different antenna designs: - Offset antennas (the most common, is slightly oval, the LNB is not in the center). - Special design (e.g. Oblong shaped Offset antenna, Multifeed antenna) - Parabolic antenna (LNB is located in the center of the reflector, usually larger than 100cm) - Flat or planar antenna (small, camping antennas) If you have an offset antenna, enter the height and width of the antenna. If your antenna has a special shape, enter the offset angle and the size of the satellite antenna. You can find the offset angle in the manual of your satellite antenna. For parabolic antennas it is sufficient to enter the antenna diameter. With a flat antenna you do not have to set anything. If you know the exact antenna name, check if your antenna is already in the database. Tip: Press the wizard button to measure the size of the satellite antenna using the iPhone camera and LiDAR scanner. STEP 2 - CHOOSE YOUR SATELLITE To quickly and easily select a suitable satellite, simply press the "AUTO" button. The SatFinder will now automatically search for satellites that are in your reception area and that offer TV or radio stations in your language (the language setting of your iPhone will be selected). The stars (1-10) shown in the table result from the number of radio and TV channels offered and the reception strength at your location. If you want to receive a special satellite, switch off "AUTO": Now you can simply scroll through the table and select the satellite. Faster is the search function - just enter the name of the satellite, the channel or the orbit position. You can also reduce the number of table entries by hiding satellites that are not available at your location or do not broadcast in your language. With the button "Channel Info" you can check which channels the selected satellite is currently broadcasting - including all channel parameters for your satellite receiver. STEP 3 - CHECK OBSTACLES For a smooth satellite reception, there must not be any obstacles between the satellite and your satellite antenna. You can check this with the "View" function. Simply aim at the satellite and watch the signs (GREEN - no obstacle, RED - caution, free view may not be given). Tip: Press the button for the assistant to activate the voice output. STEP 4 - ADJUST ANTENNA In the menu item "Align" different graphics appear depending on the selected antenna type. If you use an offset antenna, you have to adjust the azimuth and elevation separately. With planar or parabolic antennas the adjustment of the angles is done together. Before you press the "Start" button, a video clip shows how to position your iPhone at the antenna. Tip: Press the button for the assistant to activate the voice output. STEP 5 - FINE TUNING If necessary, you can optimize the reception of your satellite system. The SatFinder provides you with the function "FineTuning". To use this function, you need a second iOS device. One device serves as a camera; the second device as a monitor. Simply place an iPhone in front of your reception screen and observe changes in picture quality while slightly rotating or tilting your satellite antenna. With the FineTuning feature, you'll have visual contact with your TV even when you're out of sight. THAT'S IT. YOU SHOULD NOW BE ABLE TO ENJOY INTERFERENCE-FREE SATELLITE RECEPTION... Note: Satellite antenna tuning is only available on iOS devices with LiDAR sensor (e.g. iPhone 12 Pro).