"helium speech" meaning in English

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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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        {
          "kind": "topical",
          "langcode": "en",
          "name": "Helium",
          "orig": "en:Helium",
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            "Chemical elements",
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      ],
      "glosses": [
        "Speech whose timbre (but not pitch) has been affected by the inhalation of helium, due to the difference in the speed of sound in that gas, compared with air."
      ],
      "id": "en-helium_speech-en-noun-FpG9tEub",
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        [
          "timbre",
          "timbre"
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          "pitch",
          "pitch"
        ],
        [
          "inhalation",
          "inhalation"
        ],
        [
          "speed of sound",
          "speed of sound"
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        [
          "air",
          "air"
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        "uncountable"
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  "word": "helium speech"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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        "Speech whose timbre (but not pitch) has been affected by the inhalation of helium, due to the difference in the speed of sound in that gas, compared with air."
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          "timbre"
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  "word": "helium speech"
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