{"id":237087,"date":"2026-05-13T22:05:27","date_gmt":"2026-05-14T03:05:27","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2026\/05\/these-computer-voices-sound-human-enough-to-mislead-but-one-layer-of-speech-still-breaks-the-illusion"},"modified":"2026-05-13T22:05:27","modified_gmt":"2026-05-14T03:05:27","slug":"these-computer-voices-sound-human-enough-to-mislead-but-one-layer-of-speech-still-breaks-the-illusion","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2026\/05\/these-computer-voices-sound-human-enough-to-mislead-but-one-layer-of-speech-still-breaks-the-illusion","title":{"rendered":"These computer voices sound human enough to mislead, but one layer of speech still breaks the illusion"},"content":{"rendered":"

<\/a><\/p>\n

We are surrounded by computer-generated voices these days, from navigation systems and voice assistants to automated announcements. But how human do these voices actually sound? A recent study by the Max Planck Institute for Empirical Aesthetics (MPIEA) in Frankfurt am Main, Germany, published<\/a> in the journal Speech Communication<\/i>, shows that our perception is affected by three things: how something is said, what is being said, and whether we understand the language.<\/p>\n

In two consecutive experiments, the researchers investigated how people perceive the difference between real and synthetic voices. They created 16 short German sentences, such as: \u201cThe boy gave his father a hat.\u201d The team then manipulated the sentences in three different ways by changing the word order, replacing words with similar-sounding pseudowords, and combining both changes. This resulted in four versions of each sentence. All versions were recorded by eight human speakers and eight computer-generated text-to-speech (TTS) voices.<\/p>\n

In the first experiment, 40 German-speaking participants rated how human the voices sounded. Overall, the computer-generated voices were perceived as less human than the human voices. An analysis of the voices\u2019 acoustic characteristics revealed objectively measurable differences in sound between human and TTS-generated voices.<\/p>\n","protected":false},"excerpt":{"rendered":"

We are surrounded by computer-generated voices these days, from navigation systems and voice assistants to automated announcements. But how human do these voices actually sound? A recent study by the Max Planck Institute for Empirical Aesthetics (MPIEA) in Frankfurt am Main, Germany, published in the journal Speech Communication, shows that our perception is affected by [\u2026]<\/p>\n","protected":false},"author":662,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1523,6],"tags":[],"class_list":["post-237087","post","type-post","status-publish","format-standard","hentry","category-computing","category-robotics-ai"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/237087","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/users\/662"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=237087"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/237087\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=237087"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=237087"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=237087"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}