Such measurements are designated dBA (see NOISE LEVEL). The sound level meter, however, does not take into account the predominant frequency region of the noise, or other factors which may cause ...

A speaker may have the ability to output a frequency range of 20 Hz to 20 kHz ... One way that decibels can be measured is ...

[mircemk] had previously built a frequency counter using an Arduino, with a useful range up to 6 MHz. Now, they’ve implemented a new design on a far more powerful STM32 chip that boosts the ...

The ear is not equally sensitive to all frequencies, particularly in the low and high FREQUENCY ranges. The RESPONSE to frequencies over the entire AUDIO range has been charted ... and C weighting ...