Periodic gating creates spectral line spacings set by the pulse repetition rate

Evidence

The panel “DC pulse” shows a similar situation. In this case however, a DC-voltage rather than a pure tone is gated at regular intervals. The duration of the DC pulses is 1 ms, the spacing of the DC pulses 8 ms. The corresponding spectrum shows lines with a separation of the reciprocal of 8 ms, i.e. 125 Hz. At frequencies corresponding to 1/1 ms, 2/1 ms, 3/1 ms and so on, the amplitude of the spectral lines shows distinct minima. — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 79

Categorization

• DEFINE: Establishes the reciprocal relationship between time-domain pulse timing and frequency-domain line spacing.