Sound Quality VIs
Edition Date: June 2009
Part Number: 372416C-01
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Owning Palette: Sound and Vibration VIs
Requires: Sound and Vibration Measurement Suite. This topic might not match its corresponding palette in LabVIEW depending on your operating system, licensed product(s), and target.
Use the Sound Quality VIs to perform psychoacoustic measurements associated with the human perception of sound. Use these VIs to perform sound quality measurements, including stationary loudness, time-varying loudness, sharpness, roughness, fluctuation strength, and tonality. The Sound Quality VIs comply with applicable standards for use with product evaluation and as part of a comprehensive sound quality program.
The VIs on this palette can return general LabVIEW error codes or specific sound and vibration error codes.
Refer to the labview\examples\Sound and Vibration directory for an example of using the Sound Quality VIs.
| Palette Object | Description |
|---|---|
| Sound Quality | Computes the 1/3 octave spectrum, specific loudness, stationary loudness, loudness level, and sharpness of a one-channel time waveform input signal. You can measure these sound quality metrics on each block of input data. |
| SV Aures Roughness | Computes roughness of the sound pressure signal according to Aures' method. |
| SV Aures Sharpness | Computes sharpness from the sound pressure signal waveform, the 1/3-octave band spectrum calculated over the frequency range 25 Hz to 12.5 kHz, or the specific loudness that the SV Stationary Loudness VI returns. Wire data to the sound pressure signal [Pa] input to determine the polymorphic instance to use or manually select the instance. |
| SV Aures Tonality | Computes tonality of the sound pressure signal according to Aures' method on successive 160 ms blocks. |
| SV Fluctuation Strength | Computes fluctuation strength of the sound pressure signal from a pressure-time history. |
| SV Stationary Loudness | Computes stationary loudness from the sound pressure signal waveform or the 1/3-octave band spectrum calculated over the frequency range 25 Hz to 12.5 kHz. Wire data to the sound pressure signal [Pa] input to determine the polymorphic instance to use or manually select the instance. |
| SV Time-Varying Loudness | Computes time-varying loudness of the sound pressure signal from a time-varying 1/3 octave band spectrum. |