A simple-to-use sound file writer

Steve Holden steve at holdenweb.com
Thu Jan 14 19:16:58 CET 2010


Alf P. Steinbach wrote:
> * Steve Holden:
>> Grant Edwards wrote:
>>> On 2010-01-14, Alf P. Steinbach <alfps at start.no> wrote:
>> [bogus hand-waving]
>>>> After all, it's the basis of digital representation of sound!
>>> Huh?  I've only studied basic DSP, but I've never heard/seen
>>> that as the basis of digital represention of sound.  I've also
>>> never seen that representation used anywhere.
> 
> Just for the record: Grant has seen that representation numerous times,
> he just didn't recognize it.
> 
> 
>>  Can you provide any references?
>>>
>> Of course he can't.  And it isn't the basis of analog quantization.
> 
> Of course it isn't the basis of quantization: it *is* quantization,
> directly.
> 
Nope, quantization is taking the *instantaneous value* of a waveform and
using that as the representation for one sample period. That is nowhere
near the same as summing periodic square waves.

> Which is the basis of digital representation.
> 
Well at least we agree that quantization is the basis of digital
representations. But I've never seen any summed square wave presentation
of it.

> 
>> And I suspect Alf has never hear of Shannon's theorem.
> 
> It's about 30 years since I did that stuff.
> 
Well me too, but information theory is, after all, the theoretical
underpinning for the way I make my living, so I felt obliged to study it
fairly thoroughly.
> 
>> But don't listen to me, apparently I'm full of it.
> 
> You're spouting innuendo and personal attacks, repeatedly, so that seems
> to be the case, yes. :-)
> 
Nothing personal about it. I'm just asking you to corroborate statements
you have made which, in my ignorance, I consider to be bogus hand-waving.

Nothing about you there. Just the information you are promoting. I don't
normally deal in innuendo and personal attacks. Though I do occasionally
get irritated by what I perceive to be hogwash. People who know me will
tell you, if I am wrong I will happily admit it.

regards
 Steve
-- 
Steve Holden           +1 571 484 6266   +1 800 494 3119
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