Filter Format 32 vs 64bit. Anyone Hear a Difference?

whoareyou

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Dec 23, 2021
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Main Amp
Benchmark AHB2
Additional Amp
ATI AT525NC
Computer Audio
JRiver
DAC
Exasound E38
Front Speakers
Psb synchrony one
Center Channel Speaker
PSB synchrony one C
Surround Speakers
Revel m105
I hear no difference- at least with JRiver

What are people using and why? Just curious.
 

JLM1948

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Jan 12, 2019
Messages
114
There may be a tiny difference at low frequencies, but probably inaudible.
 

MediumRare

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Nov 8, 2019
Messages
52
There is zero possibility of hearing a difference, though many people think they do. Head over to AudioScienceReview.com and check out a wide range of DAC reviews. Each one analyzes the filters provided and shows which differences are possibly audible. The biggest benefit is to filter ultrasonics so you don’t stimulate tweeters and create IMD in the audible range. Never any impact whatsoever at the low end, DAC chip filters don’t kick in until 15k to 22k Hz anyway.
 
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JLM1948

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Jan 12, 2019
Messages
114
The biggest benefit is to filter ultrasonics so you don’t stimulate tweeters and create IMD in the audible range.
Ultrasonic filters can be implemented with similar practical precison in 32 or 64-bit format.

Never any impact whatsoever at the low end,
LF filters have coefficients that require increased resolution. think what rounding can do to 20Hz opposed to 20,000 Hz. However, as I wrote earlier, I seriously doubt anyone would hear it.

DAC chip filters don’t kick in until 15k to 22k Hz anyway.
There is often a DC eliminator set at about 1Hz. And there maybe signal processing along the way, like cross-overs.
 
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