Nexus Vox

Features

  • Converts any ASCII text into speech automatically
  • Real-time control of speed, pitch, voice, reverb, volume

CV control

  • Voices (11)
  • Speed
  • Formant
  • Reverb
  • Expression
  • Pitch (in Phoneme and MIDI mode)

These controls can be applied in real time while speaking!

Inline commands

The text string can contain commands to adjust the voice on the fly

$1o $2s I am Vader and I speak slowly

Phonetic to speech

The speech can also be generated by stringing phonemes and prosody to control the pitch, speed, and volume.

k ax m p yy uw dx er 
Computer

//h aw -/d>/eh r +<\yy uw s p iy k t uw m iy dh ae t -w ey .+/
How dare you speak to me that way!

/ increase pitch. + inscrease speed > increase volume
 decrease pitch. - decrease speed < decrease volume

Phonemes mode

Allows for the easy selection of fundamental phoneme groups, such as “Vowels” and “Consonants,” and provides straightforward controls for pitch and speed adjustments.

While providing fundamental control over pitch and speed, it’s a straightforward function ideal for those just starting their journey in speech synthesis and sound exploration.

This requires just a gate signal to get started…

Latency

From the Gate signal to the start of the speech, the latency is relatively tiny: 30 ms to 80 ms.

MIDI

Full MIDI control over the voice characteristics.
Phonetic, Phoneme or Text to speech from MIDI notes.

 

Firmware

Text files

Icon

Phonetics 0.32 KB 33 downloads

Check this file showing how to use the phonetics commands Nexus Phoneme Symbols PhonemeExamplePhonemeExample Adas...
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Icon

Commands 0.28 KB 28 downloads

Text with embedded commands Nexus commands Use the $ symbol to add a command in your...
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    Nexus Manual for Emy/Terminal

    QR Code

     

    Stand alone

    You can easily connect Nexus to your preferred microcontroller (here the Raspberry Pi Pico) using a simple serial interface.

    Click the image below to learn more

     

    Media

     

     




    SPO vox

    This board host the vintage General Instruments SP0256-AL2 aka SPO256-AL2 Narrator. This  IC was very popular in the 1980s.

    The SPO256-AL2 produces all 59 phonemes of the English language. They can be sustained to generate signing.

    It has a very recognizable 8-bit metallic sound.

    These phonemes are individually addressable and can be chained together to create words or small sentences.

    Our board adds two absent functions on the chip: pitch or inflection control and volume control.

    The chip allows looping the last phoneme to generate interesting noise or steady MIDI notes.

    MIDI control

    • MIDI note ON (first phoneme on note 36)
    • MIDI note OFF
    • Pitch Bend (can be used while the note is ON)
    • Velocity
    • Volume CC1 (can be used while the note is ON)

    CV control 

    • Phoneme
    • Volume
    • Pitch

     

    Custom vocabulary

    Build your own vocabulary by stringing allophones together in the following syntax :

    (note the + marker to extend the duration of the allophone)

    music: MM YY1 UW2 +600 ZZ IH +400 KK1 
    ZERO: ZZ YR OW
    ONE: WW AX AX NN1
    technology: TT1 EH KK1 NN1 AA +100 LL AX +400 JH IY
    electronic: IH IH LL EH KK1 TT1 RR2 AA +200 NN1 IH +200 KK1

     

    Firmware

     

    Vocabulary

    135.000 words to get you started …

    Ableton MIDI effect rack

    SPO manual for Emy/terminal

    QR Code

    Media