Editing Acorn Electron (section)

====Millsgrade Voxbox====
Advertised in late 1985, the Voxbox by Millsgrade Limited was an expansion connecting to the Electron's expansion connector that provided [[allophone]]-based [[speech synthesis]], with driver software provided on cassette.<ref name="electronuser198510">{{ cite magazine | url=https://archive.org/details/ElectronUserVolume3/Electron-User-03-01/page/n1/mode/1up | title=Speakout with the speech synthesiser for your Electron | magazine=Electron User | volume=3 | issue=1 | date=October 1985 | access-date=29 January 2021 | page=2 }}</ref> The supplied software supported the definition of spoken words built up from the allophones{{snd}} these allophones or sounds being stored in the expansion's own ROM{{snd}} and for catalogues of words to be created and saved. A program was supplied that extended BASIC to allow the use of the synthesiser in user programs.<ref name="aeworld_voxbox">{{ cite magazine | url=http://www.acornelectron.co.uk/eug/revs/millsgrade/Voxbox_000.html | title=Voxbox (Millsgrade) | magazine=Electron User Group | issue=66 | date=March 2006 | access-date=29 January 2021 | last1=Edwards | first1=Dave }}</ref> The expansion used the [[General Instrument SP0256|General Instrument SP0256A-AL2]] speech synthesis chip.<ref name="stardot_voxbox">{{ cite web | url=https://stardot.org.uk/forums/viewtopic.php?p=271982 | title=Voxbox Question | website=stardot.org.uk | date=4 June 2020 | access-date=21 February 2021 }}</ref>