https://en.wikipedia.org/wiki/Speak_%26_Spell_(toy)
The Speak & Spell was a children's toy manufactured by Texas Instruments from 1978 to 1992. Its voice samples have been used on many releases (though at this time I am unaware of any one that credits a specific artist with performing it).
Here's a (non-comprehensive) list of releases that feature the instrument:

• Results May Vary (can be heard during the bridge of track 15)
• スーパーモデル (can be heard at the end of the first chorus on track 3)
• 涼宮ハルヒの憂鬱 キャラクターソング Vol.3 朝比奈みくる
• Talk: The Remixes (can be heard on the first track)