如何為 Seed Audio 撰寫提示詞

最重要的規則

1. 1

   先建立場景，再寫台詞

   先從地點和它的聲音開始：下雨的月台、人聲鼎沸的體育場、安靜的錄音室。只有引號內的文字會被念出來；其他都是指示。

2. 2

   每個聲音只描述一次，但要完整

   角色第一次開口時,請寫出性別、年齡、口音、音色、情緒和語速:Leo(四十多歲的男性,低沉沙啞,疲憊,語速緩慢)。之後只要寫名字和簡短的說話方式就夠了。

3. 3

   依你選的長度來寫

   請先選好長度。英文語音每秒約 2.5 個單字,所以短片段只容得下一句短台詞。字數太多,最後會在字的中間被截斷;字數太少,結尾則會留下空白。

4. 4

   提示詞請用台詞的語言來寫

   西班牙語的場景就用西班牙語寫提示詞,從場景描述到對白都一樣。英文提示詞搭配其他語言的台詞,會讓演繹變得混亂。

5. 5

   多生成幾個版本

   即使 seed 相同,每次生成都是一次全新的演出。同一句台詞多跑兩三次,再挑最好的。

可以參考的提示詞

• 環境音中的旁白

  A quiet forest at dawn, birdsong slowly building, a stream running somewhere close. A narrator (a man in his sixties, standard British accent, warm and slightly gravelly, unhurried) says softly: "Every spring, the river remembers its way back to the sea." The birdsong continues to the end.

  為什麼有效: 先寫場景,聲音當作選角說明,鳥鳴持續到最後,讓片段結束在聲音上而不是硬切。長度設為 10 秒最合適。

• 兩個聲音,精準到秒

  A small radio studio late at night, the hum of equipment, rain against the window. Theo (a man in his late twenties, bright, quick, a little nervous) says: "[0.3s:3.2s] Okay, we're live. Say hi to everyone." June (a woman in her fifties, low, smoky, completely calm, slow) answers: "[3.8s:8.6s] Good evening, night owls. Pour something warm and stay a while." A soft jingle chimes; the rain continues to the end.

  為什麼有效: 每句台詞開頭都有自己的時間區間,長度配合字數,說話者之間留有短暫空檔,結尾留一秒安靜。請將長度設為 10 秒。

• 沒有人聲的背景音樂

  Generate pure background music and sound effects only. No voice, no dialogue, no narration, no lyrics.
  Style: warm, hopeful acoustic folk for a travel video. Create original music only.
  Background music: fingerpicked acoustic guitar, soft hand claps, a gentle upright piano, a light shaker.
  Sound effects: a car door closing, gravel under tires, wind on an open road. Keep effects clear but balanced under the music.
  Duration: about 30 seconds.
  Structure:
  [0:00-0:08] Guitar alone, light and curious; a car door closes.
  [0:08-0:20] Piano and shaker join, gravel under the tires, the tempo lifts.
  [0:20-0:27] The full band with hand claps, wind rushing past.
  [0:27-0:30] The music settles on one ringing guitar chord.
  Final mix: No vocals or spoken words. Bright and open, ready to sit under a travel montage.

  為什麼有效: 在開頭和最後的混音說明中都寫上「無人聲」,就能保持純樂器演奏,各段落加起來正好等於設定中的 30 秒。

• 只有音效,沒有音樂

  Inside a blacksmith's forge at night. The bellows wheeze and the coals roar up bright; a hammer rings on hot iron in a steady rhythm, three strikes and a pause, then the blade hisses as it plunges into a bucket of water and steam bursts up. Rain drums on the tin roof throughout. No music, no voices.

  為什麼有效: 每個聲音都有明確的來源和時間點,最後一句則排除你不想要的內容。

• 留給 Character 使用的乾淨人聲

  Clean, close-miked studio voice recording. No music, no background sound, no effects. Mara (a woman in her early thirties, standard American accent, low, warm, slightly husky, calm and assured) says at an even pace: "[0.2s:8.8s] I grew up on this coast. The tide always tells you something, if you are patient enough to listen."

  為什麼有效: 只有一位說話者、沒有背景音、一開始就有台詞:這是最適合存成聲音並指定給 Character 的片段。請將長度設為 10 秒。

• 從圖片生成聲音

  The old fisherman in the picture says warmly, a little amused, unhurried: "Well, look who finally showed up."

  為什麼有效: 上傳一張人像作為圖片,Seed Audio 會設計出與臉孔相配的聲音,所以提示詞只需要寫說話方式和台詞。5 秒的長度剛好容納一句短台詞。