Your Listening Based Sound System Evaluation Score
A total score of 48 to 50 is considered Great
The sound system is delivering adequate coverage for most of the auditorium.
By reviewing the archived results of your listening test with special attention to the scoring of each tested seat in your church you should be able to identify any cool or hot sound coverage in your worship space.
If your listening test has revealed that some seating areas are experiencing less than optimum sound
coverage you may decide to perform a technical test to help you discover the nature of the sound system inadequacy.
If budget issues are restricting your ability to perform a technical sound test, check out the two budget friendly, easy-to-use apps below.
SignalScope X - Acoustics app - iOS
Standard Features:
- Multi-channel, real-time analysis of signals coming from the Mac or iOS device’s selected audio channels
- Multi-channel, real-time analysis of AIF, CAF, or WAV audio files
- Assign engineering units to your input signals and calibrate external transducers for accurate measurements.
- Assign input channel units and sensitivities for individual USB Audio devices.
- Connect lab-grade microphones and sensors to your Mac, iPad, or iPhone with suitable interface hardware for precise measurements.
- SignalScope offers enhanced support for select hardware from Digiducer, The Modal Shop, and miniDSP.
- Nominal acoustic sensitivities included for iPhone and iPad built-in microphones, voltage sensitivities for headset input (including the standard Lightning-to-headset adapter).
- Manually switch between available audio input and output sources.
- Load microphone frequency response data (FRD) and apply frequency response correction (FRC) to FFT-based measurements.
- Manually adjust audio sample rates, even up to 768 kHz, depending on input hardware.
- Save acquired measurement data to CSV, tab-delimited ASCII text, or MAT files.
- Save time domain data to AIF, CAF, or WAV audio files.
- Save high-resolution analyzer display images to PDF files.
- Retrieve your data files from your device via Files (iCloud Drive), iTunes File Sharing, or through a web browser on another device. Files may also be opened in other compatible apps (e.g. Mail, Notes, Numbers, Dropbox, etc).
Pro Features:
- User-defined custom metadata in saved audio and data files
- Data logging support in the Level Meter, Octave Analyzer, and Noise Dosimeter
- Percentile exceeded sound levels in the Level Meter and Octave Analyzer
- NC, RNC, and NR references curves, NC, SIL, and NR values in the Octave Analyzer
- Voltage decibel levels can be displayed in dBV or dBu
- Load data from multiple data files to generate average curves in the FFT, Octave, and Dual FFT tools.
Decibel X - Pro Sound Meter app - Android
WHAT MAKES "DECIBEL X" SPECIAL:
- - Trusted accuracy: the app is carefully tested and calibrated for most devices. The precision is matching with real SPL devices
- Frequency weighting filters: ITU-R 468, A, B, C, Z
- Spectrum analyzer: FFT and BAR graphs to display real time FFT. Those are very useful for frequency analysis and musical tests. Real time predominant frequency is also displayed.
- Powerful, smart history data management:
+ Recording data can be saved into a list of history records for future access and analysis
+ Each record can be exported as hi-res PNG graph or CSV text via sharing services
+ Fullscreen mode to give overview the whole history of an record
- Dosimeter: NIOSH, OSHA standards
- InstaDecibel to capture your dB report overlaid on photos and easily shared via popular social networks (Facebook, Instagram, etc.).
- Beautiful, intuitive and carefully crafted UI design
OTHER FEATURES:
- - Standard time weightings (Response Time): SLOW (500 milliseconds), FAST (200 milliseconds) and IMPULSE (50 milliseconds)
- Trimming calibration from -50 dB to 50 dB
- Standard measurement range from 20 dBA up to 130 dBA
- Spectrogram
- HISTO graph for plotted history of the recorded values
- WAVE graph with 2 display modes: Rolling & Buffer
- Real time scale level chart
- Display Current, Average/Leq, and Max values with both nice and clear digital and analog layouts
- Quick reference text to help you compare with real-life examples
- "Keep Device Stay Awake" option for long duration recording
- Reset and clear current recording at any time
- Pause/Resume at any time
NOTES:
- - Please do not expect a quiet room reading will be 0 dBA. The range 30 dBA - 130 dBA is the standard usable range and an average quiet room will be about 30 dBA.
- Although most devices are pre-calibrated, custom calibration is suggested for serious purposes requiring higher precision and accuracy. To calibrate, you will need a real external device or calibrated sound meter as a reference, then adjust the trimming value until the reading matches with the reference.