Date   : Fri, 21 May 2004 20:29:36 +0100 (BST)
From   : gARetH baBB <hick.bbc@...>
Subject: Re: [Electron] sound wave

On Fri, 21 May 2004, Thomas Harte  wrote:

> to accurately reproduce things like the Exile loading speech for ages, 
> this isn't really what I want to focus on.

? No Electron game did speech.

Superior investigated doing Speech ! for the Electron but abandoned it 
because it wasn't possible.

> My question is about the actual sound wave. It is my understanding 
> (based on anecdotal evidence) that the little speaker in the Electron is 
> a piezoelectric thing. How do these actually react to a square wave? 

All the Electrons I owned/own had small proper speakers, the case of the 
electron has holding plastic pins for a speaker.

> I'm aware of some old PC and 48kb Spectrum demos that purport to use 
> knowledge of how similar speakers react to state changes to produce 
> higher resolution sound. Although I'm doubtful, I'd like my emulator to 
> be able to reproduce those effects if they exist.

Hmmm, the Spectrum had Psion Speech Chess, have you ever heard that ?