A simple-to-use sound file writer

[Alf P. Steinbach]

* Steve Holden:
> Alf P. Steinbach wrote:
>> * Steve Holden:
> [...]
>> With the goal of just a rough approximation you can go about it like this:
>>
>>   1. Divide a full cycle of the sine wave into n intervals. With
>>      sine wave frequency f this corresponds to n*f sample rate for digital
>>      representation.
>>
>>   2. Each interval will be approximated by a rectangular bar extending
>>      up to or down to the sine wave. As it happens this (the bar's
>> height) is
>>      the sample value in a digital representation.
>>
>>   3. In the first half of the cycle, for each bar create that bar as
>>      a square wave of frequency f, amplitude half the bar's height, and
>> phase
>>      starting at the bar's left, plus same square wave with negative sign
>>      (inverted amplitude) and phase starting at the bar's right. And voilà,
>>      not only this bar generated  but also the corresponding other-way
>> bar in
>>      second half of cycle.
>>
>>   4. Sum all the square waves from step 3.
>>
>>   5. Let n go to infinity for utter perfectness! :-)
>>
>> And likewise for any other waveform.
>>
>> After all, it's the basis of digital representation of sound!
>>
>>
> I'm sorry, but this is merely hand-waving. It looks appealing, but
> there's no rigor there.

Bullshit.


Cheers,

- Alf