Sound Spectrum Pro is a comprehensive audio analysis tool designed for both professionals and enthusiasts in the music and audio industry. This application offers advanced features such as Real-Time Analyzer (RTA), Fast Fourier Transform (FFT) amplitude display, and sound pressure level measurements in dBA, dBC, and dBZ. With its user-friendly interface, users can easily navigate through various on-screen controls to access functionalities like noise criterion measurement, impulse response analysis, and Total Harmonic Distortion plus Noise (THD+N) calculations.

The app stands out with its lightning-fast FFT capabilities, providing an impressive frequency resolution down to 0.01Hz. It supports multiple window functions, logarithmic or linear frequency axis adjustments, and peak/valley hold features. The inclusion of signal generators, synchronous measurement modes, and loopback functionality makes it an indispensable tool for precise audio spectrum analysis. Whether you're calibrating audio equipment or conducting detailed sound studies, Sound Spectrum Pro delivers professional-grade performance on mobile devices.

This application is particularly useful for audio engineers, acoustics consultants, and researchers who require accurate and real-time audio measurements. Its ability to save/load files and perform full calibration ensures reliable SPL readings across different environments. The large font SPL meter and adjustable exponential smoothing make it accessible even in challenging field conditions, while sharing and printing capabilities allow for easy documentation of results.

Sound Spectrum Pro distinguishes itself through its extensive feature set tailored for professional audio analysis. The application provides both FFT and RTA functionalities with remarkable flexibility - from standard octave to highly detailed 1/24 octave analysis. Its capability to measure Equivalent Continuous Sound Levels (LAeq, LCeq, LZeq) along with specialized metrics like LAeq15 and LAeq60 makes it suitable for environmental noise monitoring and industrial applications.

One of the app's key strengths lies in its sophisticated signal processing capabilities. The lightning-fast FFT engine supports sizes up to 1M, delivering exceptional frequency resolution. Users can select from various window functions and adjust frequency axes according to their specific needs. Advanced features like peak/valley hold, highest peak display, and measurement cursors provide precise control over analysis parameters. The inclusion of multiple signal generators - including tone, white/pink noise variations, and frequency sweeps - enables comprehensive testing scenarios.

Practical usability is enhanced through intuitive touch controls allowing easy pan and zoom operations. Professional users will appreciate the full calibration capability and file management system, ensuring accuracy and consistency in measurements. The application's ability to operate in loopback mode facilitates equipment testing and demonstration purposes. With its ad-free environment and support for high sample rates up to 48kHz (device permitting), Sound Spectrum Pro establishes itself as a serious tool for demanding audio professionals.

Sound Spectrum Pro offers an extensive range of audio analysis features that can be considered as a comprehensive music library in itself. With its ability to perform Real-Time Analyzer (RTA) and Fast Fourier Transform (FFT) functions, the app provides users with detailed insights into sound properties.

The application includes numerous signal generators for tones and various types of noise, which enriches the spectrum of audible frequencies you can explore within the app. This vast array of generated signals contributes to what can be described as a sizable 'music library,' allowing for intricate sound examination and experimentation.

Regarding copyright authenticity, while Sound Spectrum Pro doesn't provide a traditional music library with copyrighted tracks, it ensures all proprietary algorithms and tools are legitimately licensed for user operation. The absence of any third-party music content means there's no need for copyright clearance, positioning the app as a legitimate toolset for audio professionals who require accurate sound analysis without legal concerns over music rights.

Users benefit from this blend of a broad analytical toolkit with peace of mind about intellectual property; they have at their disposal an expansive set of capabilities to measure, generate, and analyze soundu2014all wrapped up in an intuitive interface designed for ease of use.

Sound Spectrum Pro stands out in the realm of audio applications by offering unparalleled audio quality options that cater to both amateur enthusiasts and professional audiophiles. The app supports high sample rates of up to 48kHz, ensuring that users can conduct precise measurements with clarity and fidelity.

With its implementation of advanced FFT technology, Sound Spectrum Pro delivers lightning-fast processing with remarkable frequency resolution down to 0.01Hz when using downsampling techniques. This level of precision allows users to discern minute details within complex sounds, making it an invaluable tool for tasks such as equipment calibration or room acoustics analysis.

The inclusion of multiple window functions alongside customizable settings like logarithmic or linear frequency axis representation further enhances the audio quality experience within the app. Users have control over how data is visualized, granting them flexibility in analyzing different types of audio input according to their specific needs.

This combination of high sample rate support, superior frequency resolution, and customizable visualization options empowers users with a robust platform where they can trust the accuracy and reliability of their audio analysesu2014making Sound Spectrum Pro not just a tool but a pivotal ally in achieving top-tier audio quality outcomes.