[sdiy] Digital VS Analog waves and perceived bass content?

[cheater cheater]

How about you look at DAC and notice that it's actually analog
voltages created using (perhaps) digital control. Just like a DCO, or
a VCO with numerically controlled pitch CV. In fact, the majority of
DACs are built so that they can work as digitally controlled
attenuators, letting through analog voltages completely unchanged,
except for the attenuation level, controlled with the digital signal
being sent to the DAC.

Or how about you record an analog wave, then play it back from cd.
then it's digital. and it has (nearly) the same frequency content.
therefore, your question is easily answered with 'you're asking the
wrong question'.

There really is no "digital vs analog".

Cheers,
D.

On Mon, Oct 4, 2010 at 00:02, megaohm <megaohm1 at gmail.com> wrote:
> How 'bout when you pass them through a LPF?
> What I mean is maybe all of them have the same bass but some of them
> have more high frequency content with it.
>
> p.
>
>
> On Sun, Oct 3, 2010 at 10:46 AM, mike ruberto <somnium7 at gmail.com> wrote:
>> Has anybody done a paper on this topic that I can look up? Is there
>> any hard data available concerning the harmonic content of digitally
>> produced waves verses analog waves?
>>
>> Another of my arbitrary and hokey experiments came up with these
>> results. Yes, probably flawed and totally subjective but there must be
>> something to it.
>>
>> Casio CZ-1 - Perceived bass level is decent but not very strong.
>> Kawai K3  - Perceived bass level is weak with most waveforms (VCF
>> open). Decent with a few waveforms.
>> Blacet Miniwave - Perceived bass level is weak with all waveforms.
>> Crumar DS-2 - Perceived bass level is weak with all waveforms (VCF open).
>>
>> Chroma Polaris - Perceived bass level is consistently strong (VCF open).
>> Korg 700 - Perceived bass level is consistently strong (VCF open).
>> Modular synth VCO - Perceived bass level is consistently strong.
>> Concertmate MG-1 - Perceived bass level is consistently strong (VCF open).
>>
>> I guess there is the possibility of cumulative high pass rolloff due
>> to coupling capacitors throughout the systems. However with the
>> modular stuff and the Miniwave the audio path was mostly DC coupled.
>>
>> While it appears to me that digitally produced waves are lacking in
>> bass I am open to other possibilities and looking for real data to
>> confirm or disprove the notion. I do not have the time or equipment to
>> perform any serious experiments in this regard.
>>
>> Thanks
>>
>> Mike
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