Real-time emotional voices with D.A.V.I.D.

“Like an auto-tune, but for emotions” (Brian Resnick, for


DAVID (Da Amazing Voice Inflection Device) is a free, real-time voice transformation tool able to “colour” any voice recording with an emotion that wasn’t intended by it’s speaker. DAVID was especially designed with the affective psychology and neuroscience community in mind, and aims to provide researchers with new ways to produce and control affective stimuli, both for offline listening and for real-time paradigms. For instance, we have used it to create real-time emotional vocal feedback here.

Technically, DAVID is implemented as an open-source patch for the close-source audio processing plateform Max (Cycling’74), and, like Max, is available for most Windows and MacOS configurations. It is available free-of-charge under the MIT license.

It was developped by Dr Marco Liuni and members of the CREAM Neuroscience Lab at Computer music center IRCAM in Paris (France), with generous funding from the European Research Council (CREAM #335536, 2014-2019, PI: JJ Aucouturier) and in collaboration with Petter Johansson and Lars Hall (Lund University, Sweden), Rodrigo Segnini (Siemens, Japan), Katsumi Watanabe (Waseda University, Japan), and Daniel Richardson (University College, London UK). DAVID was so named after Talking Heads’ frontman David Byrne, whom we were priviledged to count as our early users in March’15.

What does it do?

DAVID is a software tool able to “add” emotion to a speech recording, i.e. it can make that American chap

or that French young lady

sound scared,


or sad

(and whatever else you’d like them to sound like).

It does so in a way that’s properly validated for behavioural science, i.e. emotions are recognizable by listeners, they are fully controllable and reproducible in intensity, and there are mistaken as natural expressions and not detected as synthetic (Rachman et al, 2015). In fact, even the speakers themselves mistake the manipulated speech as their own (Aucouturier et al., 2015).

In addition, it does so in real-time, i.e. you can transform speech as it is spoken, e.g. over the phone. With modern audio interfaces, we reached in/out latencies as small as 15ms, which even makes it useable as vocal feedback to a speaker without disrupting speech production (Aucouturier et al., 2015).


DAVID is implemented as an open-source patch for the close-source audio processing plateform Max (Cycling’74). To use DAVID, you need to install Max first.

1. Installing Max

DAVID has been fully tested with Max7, and also supports Max6. Both are available in MacOS and Windows versions on the seller’s website: Max is available under a commercial license from Cycling’74, but is available in free runtime versions that suffice to run DAVID.

According to its seller Cycling’74, system requirements for Max7 are Intel® Mac with Mac OS X 10.7 (or later), OR a PC with Windows 7 (or later); Multicore processor; 2 GB RAM; 1024×768 display. If your system widely departs from these specifications, consider installing Max6 (

2. Installing DAVID

DAVID V1.0 was released on October 15th, 2015. Simply download the .zip file from, and extract it on your computer. To open the patch, double click on the DAVID.maxproj file.


Alternatively, you can download all files from the DAVID project on the bitbucket repository:

Usage documentation

The following video is a tutorial presented at the 4th International Conference on Music and Emotion, October 2015 in Geneva (Switzerland).

For more information, please see the usage notes from the software’s README file (also included in the download above). A complete user guide will be available soon.

Experimental validation

DAVID was extensively validated for use in psychological and neuroscientific experiments. In listening experiments conducted in IRCAM (France), UCL (UK), Lund University (Sweden) and Waseda University (Japan), we found that emotional transformations made with DAVID were well recognized and sounded as natural as non-modified expressions of the same speaker; that the emotional intensity of the transformation could be controlled; and the transformations appeared valid in several languages, namely in French, English, Swedish and Japanese.

The following video is a report on some of the experimental validation presented at the 4th International Conference on Music and Emotion, October 2015 in Geneva (Switzerland)

A complete report about the experimental validation is under review, and available as a preprint from

Associated Publications

Rachman, L., Liuni, M., Arias, P., Lind, A., Johansson, P., Hall, L., Richardson, D., Watanabe, K., Aucouturier, J.J. (2016) DAVID: An Open-source platform for real-time emotional speech transformation. Under review. Preprint.

Aucouturier, J.J., Johansson, P., Hall, L., Segnini, R., Mercadié, L. & Watanabe, K. (2015) Covert Digital Manipulation of Vocal Emotion Alter Speakers’ Emotional State in a Congruent Direction. Proceedings of the National Academy of Science. Open-access

Technical support and questions

DAVID was developped by Dr Marco Liuni (Google Scholar), who may be able to help with technical issues ( Its experimental validation (recognizeability, naturalness, emotional intensity) was conducted by Ms. Laura Rachman (Google Scholar), whom you can ask for DAVID’s applicability to your own research needs ( Project scientific lead was J.J. Aucouturier (Google Scholar), who’ll be happy to chat about anything, really (

Coming soon

Max4Live plugins to use DAVID with Ableton Live. Available upon request for now.

Python binding for integration in psychology protocols. Under development.

205 thoughts on “Real-time emotional voices with D.A.V.I.D.

  1. Pingback: My Homepage
  2. Pingback: hover-boards
  3. Pingback: csgo skins custom
  4. Pingback: billy bag
  5. Pingback: mcm bookbag
  6. Pingback: stivaletti gucci
  7. Pingback: hollister online
  8. Pingback: toms sale
  9. Pingback: get csgo skins
  10. Pingback: mcm wire
  11. Pingback: sacs hermes soldes
  12. Pingback: sac hermes evelyne
  13. Pingback: bague hermes
  14. Pingback: prada purse
  15. Pingback: summer handbags
  16. Pingback: CSGO
  17. Pingback: designer purses
  18. Pingback: NBA2K16
  19. Pingback: csgo
  20. Pingback: NBA
  21. Pingback: counterstrike
  22. Pingback: nba 2k16
  23. Pingback: csgo
  24. Pingback: here me hi az df
  25. Pingback: manastirski_chay
  26. Pingback: online
  27. Pingback: online
  28. Pingback: sitemaplist
  29. Pingback: hqpornforiphon
  30. Pingback: pornozavrnet
  31. Pingback: saleforiphone
  32. Pingback: kinoklub
  33. Pingback: drama2016
  34. Pingback: jpmsru
  35. Pingback: top2017bloomingme
  36. Pingback: sinema izle
  37. Pingback: lopoda
  38. Pingback: novinki kino 2016
  39. Pingback: 2016 filmleri
  40. Pingback: gidrofob
  41. Pingback: Cheap NFL Jerseys
  42. Pingback: mirdikogozapada
  43. Pingback: Cheap NFL Jerseys
  44. Pingback: Cheap Jerseys
  45. Pingback: cappadocia hotels
  46. Pingback: cappadocia tours
  47. Pingback: cappadocia
  48. Pingback: Cheap NFL Jerseys
  49. Pingback: Wholesale Jerseys
  50. Pingback: Cheap Jerseys
  51. Pingback:
  52. Pingback: Wholesale Jerseys
  53. Pingback: trumpnews
  54. Pingback: molodezhka4seria
  55. Pingback: molodejka
  56. Pingback: molodezhka4sezon
  57. Pingback: molodezjka
  58. Pingback: Cheap Jerseys
  59. Pingback: milidejka4-19-20
  60. Pingback: molodejka4sezon19
  61. Pingback: molodejka4s21
  62. Pingback: molodejka4sezon21s
  63. Pingback: link2016
  64. Pingback: xml18112016
  65. Pingback: Cheap Jerseys
  66. Pingback: xml181120167
  67. Pingback: Cheap NFL Jerseys
  68. Pingback: Wholesale Jerseys
  69. Pingback: lastssadsafdsa
  70. Pingback: me rt last
  71. Pingback: Wholesale Jerseys
  72. Pingback: dadafdf3ddafdsa
  73. Pingback: dadafdf3ddafdsa
  74. Pingback: Cheap Jerseys
  75. Pingback: topsitesss
  76. Pingback: cxzvcxzvcxzvds
  77. Pingback: cxzvcxzvcxzvds
  78. Pingback: dsafdsafd sitein
  79. Pingback: meliostadaf
  80. Pingback: Cheap NFL Jerseys
  81. Pingback: badsanta2
  82. Pingback: Wholesale Jerseys
  83. Pingback: 2121201612trump
  84. Pingback: Wholesale Jerseys
  85. Pingback: newsss33333
  86. Pingback: Cheap NFL Jerseys
  87. Pingback: ansomone for sale
  88. Pingback: Wholesale Jerseys
  89. Pingback: 0901201710012017
  90. Pingback: MutantNinja2016
  91. Pingback: tiodru
  92. Pingback: moana watch online
  93. Pingback:

Comments are closed.