The 8-Bit Guy Speech Synthesizers - Page 1
Forum section: electronics / general

author: MT
author_rank: Super Contributor
timestamp: March 11, 2019, 03:12:14 am
content: You beat me to it!

author: @rt
author_rank: Super Contributor
timestamp: March 11, 2019, 03:11:31 pm
content: Yeah I liked that video. Speak & Spell was my dream machine as a kid that I never got.It’s probably the kind of thing I should find to play with as an adult, but I don’t have quite the same respect for it now.Math Marvel, Dataman, and non-speaking things like that I did buy again to play with later on.

author: tooki
author_rank: Super Contributor
timestamp: March 13, 2019, 12:53:27 pm
content: Quote from: Homer J Simpson on March 10, 2019, 09:47:51 pmToo bad 8-bit guy fucked up, since he’s dead wrong about the TI stuff (and others) not being “real” speech synthesizers.

author: @rt
author_rank: Super Contributor
timestamp: March 13, 2019, 06:53:43 pm
content: I wouldn’t call it a fuck up since he defined his own definition of a true speech synthesiser, and made it clear (even if it’s incorrect).If he did, it wouldn’t be the first time, or even the worst time he’s completely fucked up a video though.100 fuck up points for the 3 part HD44780 LCD series where he fails to understand the LCD enable pin is negative edge triggered,causing him to build some BS circuit to interface to the C64, when it could have been directly connected to (and powered from) the bus.The BS circuit is probably only working as a delay for other signals to align the timing of the enable signal properly (all unbenownst to 8 bit guy).100 more fuck up points for trying to teach something he had improperly learned himself, as he’s improperly learning it.

author: tooki
author_rank: Super Contributor
timestamp: March 13, 2019, 08:52:19 pm
content: He seemed to be confusing a generalized text-to-speech system with just speech synthesis. But he’s dead wrong that the TI devices and that c64 add-on use recordings of words. They plain and simply do not. The speech synthesizer chip must be fed specific sound commands, not human-readable text, but definitely not recordings.And yeah, I remember his HD44780 debacle. I enjoy his enthusiasm, but he sometimes reaches far beyond his technical comprehension...

author: rsjsouza
author_rank: Super Contributor
timestamp: March 13, 2019, 09:19:15 pm
content: Quote from: tooki on March 13, 2019, 08:52:19 pmYes, they definitely use voice synthesizers - LPC in the case of the Speak'n Spell. I had the honor to have met Gene Frantz, one of the developers of the TMC0280.

author: coppice
author_rank: Super Contributor
timestamp: March 13, 2019, 09:41:28 pm
content: Quote from: rsjsouza on March 13, 2019, 09:19:15 pmThe early TI speech synthesis chips were LPC based, but relied on lab based text->allophone->LPC parameter mapping, with the results stored in ROM. As MCUs became more capable they did the text->allophone->LPC mapping on an MCU attached to the LPC chip. So, they always synthesised the voice. The difference between the early limited vocabulary versions, and the later more flexible ones, was simply where the mapping work occurred. I used to report to Kun Lin, whose PhD work was one of the bases for this stuff, and who co-authored a lot of the relevant papers with Gene Franz.