Sound Level Analyzer 8.0

The "Sound Level Analyzer" is a comprehensive sound measurement and analysis tool designed for iPhone devices. It serves as both a sound level meter and an analytical instrument, suitable for various professional and personal applications.

This application supports functionalities such as environmental noise monitoring, audio system diagnostics, vehicle interior noise assessment, live event sound checks, among others. Its versatility makes it an effective tool across multiple industries.

In addition to basic measurement features, "Sound Level Analyzer" incorporates advanced analysis modes including time–domain graphing, real-time frequency analysis (RTA), and Fast Fourier Transform (FFT) analysis. These modes enable detailed examination of sound source characteristics.

• Measurement Capabilities:
  • Main Leq measurement providing real-time sound level display
  • Parameters include Leq (equivalent continuous noise level), Min, Max, and average noise levels
  • Adjustable frequency weighting: A (standard for noise measurement), C (optimized for louder sounds), Z (flat response)
  • Time weighting options: Fast (0.125 sec), Slow (1.0 sec)
• Spectral Analysis:
  • Real-time power spectrum visualization
  • FFT analysis and 1/3-octave band response analysis
  • FFT frequency ranges configurable from 100Hz to 20kHz, with options to narrow to sub-ranges
  • Display of measured values within the 1/3-octave bands
  • Detection of maximum power spectrum levels with corresponding display

Control Functions:

• Calibration feature allowing level correction adjustments within ±20dB
• Measurement timer with preset durations: 1 min, 5 min, 10 min, 15 min, 20 min, 30 min, 1 hour
• Snapshot function to save current measurement data with timestamps directly to Photos

This tool is applicable in diverse scenarios such as live sound assessments, environmental noise monitoring, audio equipment installation and tuning, architectural acoustics evaluations, broadcasting, and device management.

To illustrate typical sound levels:

• 130dB: Aircraft engine noise
• 110dB: Car horn
• 100dB: Passing train noise
• 90dB: Industrial factory environment
• 80dB: Train interior or vacuum cleaner operation
• 70dB: Busy office or lively street noise
• 60dB: Quiet car interior or normal conversation
• 50dB: Quiet office setting
• 40dB: Library or quiet residential neighborhood
• 30dB: Midnight outskirts or whispering
• 20dB: Rustling leaves sounds

Please note that upon initial installation, the app requests permission to access the microphone and Photos through iOS privacy settings. Failure to grant access may limit functionality.

For further details and support regarding this application, please consult our iOS app support resources.