[music-dsp] Paper on bandlimited analog waveform synthesis usingFM

[Peter Schoffhauzer]

Hello Alex,

Here's the original saw wave, which is an ideal bandlimited saw 
generated by summing sine partials.

http://scp.web.elte.hu/tmp/mp3/allpass/allpass_original.mp3

-- Peter


Alexander Marano wrote:
> Peter,
> 
>     You post two examples, one of 'two changing allpass filters
> applied to the sound" and then "the original signal" mixed in.  Is
> there a post of what the raw, original signal sounds like?  Or is it
> just a saw wave?
> 
> Thanks, normally I barely follow these convos, so as a sound designer
> I get excited when there's sound included.
> 
> -Alex
> 
> On 1/17/07, Peter Schoffhauzer <scoofy at inf.elte.hu> wrote:
>> Hello Mike,
>>
>> Michael Gogins wrote:
>> > As I understand it, two sounds that differ in the phases of their 
>> partials,
>> But the phase difference does not change during listening, will sound
>> identical.
>> If the phase changes while listening, they will sound different (this is
>> called,
>> not surprisingly, "phasing").
>>
>> Well, I think this is not exactly the case. When the phase changes
>> during listening, it may be perceived as some kind of 'vibrato' effect.
>> Here is an example of two changing allpass filters applied to the sound:
>>
>> http://scp.web.elte.hu/tmp/mp3/allpass/allpass1.mp3
>>
>> All you can hear is a saw wave with a vibrato-like effect. Now if I mix
>> the original signal to this, then phase cancellations happen and we get
>> the classical 'phasing' sound:
>>
>> http://scp.web.elte.hu/tmp/mp3/allpass/allpass2.mp3
>>
>> Regards,
>> Peter
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