This specific spike has been famously identified in major soundtracks, including Hans Zimmer's Interstellar . It is often debated in forums like Reddit's Audio Engineering community because many modern listeners using spectrum analyzers notice the spike, even if they can no longer hear that high a frequency due to age. Managing Similar Audio Issues
In audio production, "low-frequency" usually refers to the 20–200 Hz range. However, the specific value is highly significant in technical circles for the following reasons:
If you are dealing with a recording containing this or other unwanted frequencies, engineers typically use:
Often used for true low-end rumble (20 Hz to 1 kHz).
Tools like Soothe2 or standard notch EQs can target and remove a surgical spike like a 15.7 kHz whine without affecting the rest of the audio.
15.734 kHz is the horizontal scan rate of legacy NTSC analog video displays (CRT monitors). In recording environments like those used for film scores, if a CRT screen was used—for example, to communicate with a musician or display a score—it could create a high-pitched "whine" captured by sensitive microphones.
When dealing with low-end frequencies (bass/kick), it is critical to ensure phase alignment to prevent "wobbly" or weak sounds. 7 kHz noise from your own audio?