Appmuse

• Overview - SoundMaster aims at delivering the most robust sound level measurement readings on the App Store - Audio data is captured directly from input buffers, ensuring a robust and responsive measurement output - Features state-of-the-art algorithmic implementations, ensuring high-accuracy readings - UI is polished to perfection, delivering professional-grade user experience - Comes pre-calibrated using reference equipment • Main Features - Professional sound level measurement capabilities - Advanced calibration and equalization support - Extended measurements management • Under the hood - 44.1kHz/32bit raw audio recording - 20Hz to 20kHz frequency response - 90dB dynamic range, from 25dB to 115dB SPL[A] - ±1.4dB accuracy @25dB-115dB SPL[A] - Low latency and processing-loss spectral analyzer - Audio I/O latencies monitoring and compensation • Noise Measurements - Digital VU and numeric visualizations - Broadband RMS, Peak, Max, Min, Leq and measurement duration data handling - Impulsive, Fast and Slow response modes - A, B, C, D, Z weighting filters • Advanced Calibration - Calibrated and equalized for all iPhone models - Calibrated for the MicW i436, as an external input source - Calibration data is OTA (Over the Air) updated - Additional user calibration and equalization banks for both embedded microphone and external input source - Custom octave-based gain adjustment support • Session Management - Frame-based time-series of measurement data handling - Overall statistics calculation for noise measurements - Photo capture capability - Time and geolocation awareness support - Title, location and comments metadata support - Audio recording (CAF format), measurement data (CSV format) and metadata export capabilities • Additional Capabilities - Option for keeping the device awake during recording - Option for auto-stopping measurements after a pre-configured duration - Background recording capability - Upside down orientation support