| 21. | At audio frequencies the impedance is far from constant and the nominal value is only correct at one frequency.
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| 22. | Using delta-sigma modulation, Super Audio CD obtains 120 dB SNR at audio frequencies using 1-bit audio with 64?oversampling.
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| 23. | Thus, valves with low noise at high frequency do not necessarily have low noise in the audio frequency range.
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| 24. | Consequently, practical ADCs at audio frequencies typically do not exhibit aliasing, aperture error, and are not limited by quantization error.
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| 25. | Some radio monitoring hobbyists record ELF pitch, so that it can be brought into the audio frequency range for audibility.
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| 26. | Each call sign is sent in Morse code generated at different audio frequencies and speeds, timed to overlap each other.
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| 27. | As the trail dissipates, megawatts of electromagnetic power could be released, with a peak in the power spectrum at audio frequencies.
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| 28. | This network and tower combination often results in a narrow bandwidth, severely limiting the audio frequency fidelity of the radio station.
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| 29. | An "'audio filter "'is a frequency dependent amplifier circuit, working in the audio frequency range, 0 Hz to beyond 20 kHz.
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| 30. | To make them audible, the tone wheel receiver used the heterodyne principle to convert the radio frequency to an audio frequency.
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