Contents
- Index
Multiple Tones
This signal generator options allows you to configure your own set of tones. The tone waveform consists of up to 10 user defined tonals. You can select the number of active tones, their frequencies, relative amplitudes and phase.
The check box to the left of the frequency setting determines whether or not the tone is enabled. If the box is not checked, the associated tone will not be generated.
The frequency setting determines the tone frequency in cycles per second.
The relative power setting determines the amplitude of the tone compared to the other tones being generated. The power is specified in decibels (dB).
The phase setting determines the phase offset at the start of the waveform.
Apply Dithering - Dithering is intentional noise which is added in order to randomise the quantisation errors (rounding errors) when computing the waveform in order to reduce distortion. The noise itself isn't audible unless heavily amplified. Dithering is applied to all signal types but this option allows you to disable it for certain types of applications. It only disables it for the multitone signal type. The Dithering algorithm used is a triangular probability density function (TPDF) at a level of 1LSB pk-pk.
Load/Save: allows you to easily change between sets of tones. Creates a simple INI type file with the tone settings. The file extension is .tones and is located in the /Config folder by default
See Also: Signal Generator, 1 kHz Tone, IMD Tones