Volume reduction before sample rate conversion?

[Jud]

@Agoldnear

increasing the sample-rate does nothing to the encoded ISP’s.

Sorry but we’ve been through this discussion before. HQPlayer Desktop software tracks intersample overs. It wasn’t until I put in a 3dB cut that all the intersample overs went away.

https://benchmarkmedia.com/blogs/application_notes/intersample-overs-in-cd-recordings

[Agoldnear]

You changed the dynamic-range by lowering the bit-depth by .5bits (where in LPCM 6dB = 1bit) … The sample-rate did not change…

If you did not see the report, do you think you would have been able to audibly identify the ISP’s? … The bias of having that information would prohibit any subsequent unbiased observation in audition…

I’m not saying ISP’s are good…

Edit:
For reference… I calculated the voltage differential when dropping the Volume control by -3dBV and -3dBu… Respectively:

• -3dBV level change is approximately .71Vrms (reference 1.0000 volt ≡ 0 dBV)
• -3dBu level change is approximately .55Vrms (reference 0.7746 volt ≡ 0 dBu}

It’s all about the DAC headroom (dynamic-range)… Digital? it’s all analog voltages… The only true digital-bits are those encoded on or in the storage media before being lifted from the media and interpolated into analog voltages

… And “Oversampling” and “Up-Sampling” are not synonymous, they represent two different forms of interpolation strategy.

[Jud]

@Agoldnear

… And “Oversampling” and “Up-Sampling” are not synonymous, they represent two different forms of interpolation strategy.

They were often used to denote different interpolation strategies back in the days when ASRC (asynchronous sample rate conversion) was a more common de-jitter strategy for DACs (which went out of style years ago when asynchronous USB input, which is more effective, was popularized), but neither has ever been a formally defined term. “Interpolation” is the formal term. I’m not going to be doctrinaire about these informal terms long after they’ve ceased to have any practical distinction.

[Ironz]

[Agoldnear]

Upsampling

Oversampling

Interpolation

The process of ‘digitization’ of analog signals (A/D) is an interpolation… or vice versa, ‘digital’ to analog conversion (D/A), is an interpolation… or for some, these processes are transmogrifications…

[Jud]

Nah, I’m stopping, so he’ll be able to get the last word in.

[Agoldnear]

How magnanimous of you…

[Ddude003]

The answers from the Audirvana gods (read devo) are deafening…

[OffRode]