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Filmmaking Dictionary: Number 9 / 96 kHz Sample Rate
Definition
96 kHz is an audio sample rate of ninety-six thousand samples per second, per channel. It describes how frequently the waveform is sampled. It does not specify bit depth, loudness, channel count or the video’s frame rate.
The Nyquist frequency for a 96 kHz system is 48 kHz. That is a theoretical sampling boundary, not a promise that a microphone, preamp and recorder capture every frequency up to it with useful accuracy. The complete recording chain determines usable bandwidth.
Why Record at 96 kHz?
Higher-rate recording can be useful for sound effects that will undergo substantial pitch shifting or slowed playback. If the original chain captures useful high-frequency content, lowering the sound’s speed can move some of that information into the audible range.
Ordinary dialogue does not automatically become better because the sample rate is doubled. Microphone placement, room sound, performance, noise and appropriate levels often matter far more. The chosen rate should serve the production and post-production workflow.
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Practical Tradeoffs
- Uncompressed audio at 96 kHz uses twice the sample data of 48 kHz at the same bit depth and channel count.
- Higher rates can increase storage and processing demands.
- Some recorders change their available track count or features at higher rates.
- A 48 kHz delivery requires appropriate sample-rate conversion.
Sound-Design Example
A recordist captures metallic impacts at 96 kHz for a designed creature or machinery effect. Slowing the material can produce a heavier sound while preserving more useful upper-frequency information than a lower-bandwidth source might provide. The result still depends on what the microphone and recorder actually captured.
When returning the effect to a 48 kHz film session, proper conversion preserves the intended duration and pitch. Simply relabelling a 96 kHz recording as 48 kHz plays its samples at half speed, doubling duration and lowering pitch by an octave. That may be a deliberate effect, but it is not transparent conversion.
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Frequently Asked Questions
Is 96 kHz the same as 32-bit float?
No. Sample rate and numerical sample format are independent settings.
Can 96 kHz audio sync to 24 fps picture?
Yes. Audio sample rate and video frame rate measure different things. Correct recording, clocking and timeline handling establish synchronization.
Related Terms
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