Posts Tagged ‘Sound’


Frequency Modulation Synthesis in Flash 10 and Gumbo

September 20, 2008. Posted by Andy Hulstkamp in Astro (Flash 10 beta), Gumbo (Flex 4 beta), Sound. No Comments »
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Frequency Modulation was discovered by John Chowning back in the 60s, while experimenting with vibrato. Basically in FM-Synthesis the frequency of one oscillator (carrier) is modulated by the signal of another oscillator (modulator). The great thing about FM-Synthesis is that it can produce a wide range of sounds with relatively little computing cost, cause we only need to generate 2 basic waveforms to get started. Ideal for environments like flash where you have to watch your fps carefully.

Frequency Modulation Test

Here’s a little test. Please turn down volume first. Needs the latest Flash-Player 10 (rc of 091508).

To do FM-Synthesis in flash we could fill the (more…)


From cacophony to music. Trying to create bearable evolving music in flash 10 (beta).

September 15, 2008. Posted by Andy Hulstkamp in Actionscript 3, Astro (Flash 10 beta), Sound. 3 Comments »
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In this post I was experimenting with waveforms. Playing sounds constantly on the same pitch gets a bit boring after a while, however simply introducing random pitch isn’t too charming either. I started to twiddle (more…)


Sound in Flash 10 (beta). Generating Waveforms, Timbre and Pitch.

September 12, 2008. Posted by Andy Hulstkamp in Actionscript 3, Astro (Flash 10 beta), Flash, Sound. 28 Comments »
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It’s been quite a while (back in 2002, flash 5) since I did some serious work using oscillators and waveforms. I’m writing this down while trying to get back on track. The stuff described here is definitely no secret. It’s basic, but relevant to create some tunes in flash. Maybe you’ll find some of the stuff useful.

Through the introduction of the SampleDataEvent (more…)