SoundMaster ISA 4+

The intelligent sound analyzer

Lazaros Vrysis

    • $24.99

iPhone Screenshots


• Overview
- The application provides long-term audio analysis capabilities, based on semantic audio processing concepts
- Intelligent Sound Analysis brings real time audio-pattern recognition, visually resulting into an event detection markup timeline
- A dynamic audio-samples database is used as a pattern-storing matrix, which is configurable by users
- Α build-in audio semantic engine is capable of detecting audio events and patterns

• Highlights
- Perfectly polished UI, delivering professional-grade user experience
- State-of-the-art implementations for Audio Feature Extraction, Temporal Feature Integration and Pattern Classification algorithms
- Calibrated using reference equipment

• Main Features
- SoundMaster ISA: intelligent long-term audio monitoring
- SoundMaster RVA: octave-based RT60 measurements
- SoundMaster RTA: octave-based audio analysis
- SoundMaster SLM: professional sound level metering
- Advanced calibration and equalization support
- Sophisticated 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
- Build-in audio feature extraction engine for estimating temporal an spectral audio features
- MFCCs, ZCR, Spectral Centroid, Spread, Flatness, Crest Factor and Rolloff calculation
- 1NN and Euclidian-Distance based classifiers that enable audio pattern classification
- Mean, Variance and MeanVar temporal feature integration models for improving detection robustness

• Audio Semantic Analysis
- Audio event detection and pattern matching annotation
- Option for capturing new audio samples and building a custom audio pattern library
- Option for choosing a subset of all available patterns on each measurement
- 1NN and Euclidian-Distance based algorithm as choices for classification
- Mean, Variance and MeanVar models as choices for temporal feature integration
- Audio event detection sensitivity adjustment
- Audio pattern matching sensitivity adjustment
- Audio features selection support

• Reverberation Time Measurements
- Octave-based RT60 measurement capability
- Interrupted noise method implementation through signal excitiation
- Build-in band-pass input filtering for improved tolerance to background noise
- Build-in band-pass noise generator
- Option for measuring T[20] or T[30]
- Option for setting the repetition-count for each measurement
- Ability to detect measurement errors and inform the user through an error-code protocol
- High background noise, insufficient signal volume, low SNR and noise during decay errors detection
- Retry on error automation

• Noise Measurements
- Digital VU and numeric visualizations
- Broadband RMS, Peak, Max, Min, Leq and measurement duration data handling
- Octave-based RMS, Leq, Max, Min data handling
- Impulsive, Fast and Slow response modes
- A, B, C, D, Z weighting filters

• Advanced Calibration
- Calibrated and equalized for each iPhone model
- Calibrated for the MicW i436, as an external input source
- Calibration data is OTA (Over the Air) updated
- User calibration and equalization facility
- Custom octave-based gain adjustment support

• Session Management
- Frame-based time-series of measurement data handling
- Overall statistics calculation for noise measurements
- Event detection timeline annotation for long-term monitoring
- 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 preconfigured duration
- Background recording capability
- Upside down orientation support

What’s New

Version 1.3.2

Resolved an issue with dark mode.

App Privacy

The developer, Lazaros Vrysis, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

More By This Developer

Army Knife
SoundMaster SLM
SoundMaster RVA
SoundMaster RTA

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