Big Finish have indicated that the audio range has now discontinued.
The central core sound had gone beyond audio range, though a roaring, tearing background remained.
The difference between the two oscillator frequencies produces a tone in the audio range.
I drop back to normal audio ranges and wait.
The choke acts as a constant current source in the audio range.
"Oh, I have listened to only the audio range," she said.
And they suggest a new approach for designing devices to help those who can hear little or nothing in normal audio ranges.
A 'hum', for example, is a vibrating sound signal in the audio range of frequencies.
Most single driver systems, such as those in radios, or small computer speaker designs, cannot reproduce the entire audio range.
She has also contributed to the audio range as a writer.