[sdiy] Digital oscillators [was: Active VCO temp compensation]

[Seb Francis]

Antti Huovilainen wrote:
>
> 5b) BandLimited StEps (BLEP)
> For each oscillator reset, sum a bandlimited step with the trivial 
> saw. The steps are precalculated and stored in a table (can be quite 
> short when interpolation is used between two phases.
>
> Pros: Very good quality. No oversampling required. Can do bandlimited 
> FM, PWM and sync. Probably the only method that can do audio rate PWM 
> and sync.
> Cons: Requires a divide per cycle. Can be complicated: calculating 
> required table entry is not trivial when using sync or pwm.
>

For anyone trying to get their head around this (like me!), here's an 
easily-understandable introduction...
http://www.slack.net/~ant/bl-synth/

Seb