NEXTWave Speech and Audio Analyzer Technical Specifications

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Standard Interoperability

Importing and Exporting Your Data

The NEXTWave Signal Processing Lab was designed to easily use your data - no matter how it was originally gathered or generated.  Direct use of binary file data (in a variety of formats) is supported, as well as the importation of ASCII type data, .wav files, and .mp3 files.

Working with Other Software

NEXTWave SPL supports a wide variety of binary data formats - both coming in and going out.  This capability allows generated and processed data to be used by other standard signal processing software.

Software Environment

Intuitive User Interface

The NEXTWave SPL user interface benefits from the transparent interaction between its Viewpad display and its programming interface.  The graphical nature of the environment ensures that data analysis and signal processing can be achieved without requiring the user be an expert programmer.

Gesture-based Waveform Manipulation

NEXTWave SPL provides a variety of ways in which to interact with waveform signals.  This high level of control allows waveforms to be easily navigated using gesture-based movements of the mouse.  This interface mimics the touch control of tablet-based computers.

Analysis Options

Powerful Analysis Capability

NEXTWave SPL has been designed to ensure quick, efficient display of data, including very large sets of information.  Maneuvering through the data is exceptionally easy.  Auto-ranging and auto-scaling options conveniently keep the data right where you want it - in plain view at all times.  SPL has given special attention to the frequency domain through choices of frequency domain transforms, windowing options, and even built-in spectrum averaging.  In addition to magnitude types of displays, an innovative 2D-3D spectrogram is available for advanced frequency domain analysis.

Get a Feel for the Real Information

See the beauty in your signals with the advanced spectgrographic analysis offered by SPL.  The professional nature of these displays (color/monochrome) gives incredible detail in the frequency domain and allows for the frequency content of large time spans to be seen at a glance.

Frequency Transforms

Due to the importance placed on frequency domain analysis, there are several methods of calculating the frequency content of an input signal when viewing data in the frequency display modes.  These allow for flexibility in analyzing signals and include the traditional Fast Fourier Transform (FFT), the Constant-Q Transform (CQT), and a Frequency Band Transform.

Processing Capabilities

Design Waveform Programming Interface

NEXTWave SPL provides the flexible Design Waveform programming interface to allow users to process a data stream before it is displayed on the Viewpad.  Programming is achieved graphically through the manual selection and use of preexisting signal processing and analysis functions that are placed into an ordered sequence.  These functions operate on file-based data, processed data, and continuously acquired real-time data.  The Design Waveform interface is based upon a standard menu ribbon that provides an intuitive means of constructing algorithms.

Powerful Signal Processing Algorithms

NEXTWave SPL contains a variety of signal processing and analysis algorithms that have each been packaged for easy use.  These algorithms are designed to work together to produce a desired outcome on an input data stream for subsequent data analysis via the Viewpad display.

Apply DSP Easily

Users need not be experienced programmers to use NEXTWave SPL's powerful programming capability.  An algorithm is created by simply selecting from a menu of functions in a desired sequence.  Individual functions that operate on waveform data are represented by icons and are grouped together in a related fashion.

Real-time Acquisition

Acquiring Data from the A/D

NEXTWave SPL includes analog I/O functions that can be used to acquire real-world data.  The Sound Card A/D function allows data to be acquired as an input waveform via the input channels of a standard Windows-compatible sound card.  It allows for the specification of input channel, sample rate, adjustable gain, and number of samples per frame to be acquired.  Support for other third-party data acquisition hardware is also available in the Enterprise Edition.

Sending Data to the D/A

A unique feature provided in NEXTWave SPL is the ability for the user to select and send a section of a waveform displayed in the Viewpad to the Sound Card D/A.  Both the Time and Spectrogram Viewpad display modes allow for means of selecting sections of waveform data and sending them directly to the Sound Card D/A to allow for a 'see-it/hear-it' experience.