feat(voice): 攒句器——语音下行 TTS 的 token 攒句(JARVIS 地基第一块)
语音交互(VOICE_DESIGN.md)不依赖火山账号的第一块地基:SentenceBuffer 把 LLM 逐 token 输出攒成'适合喂 TTS 的句子片段'。逐字喂 TTS 太碎(单字合成不自然、首包延迟高);句末标点 (。!?.!?;;换行)即成一句,从句标点(,,::)且攒够 12 rune 也吐(让长回答尽早出声)。 跨 Push 续半句,Flush 收尾吐无标点结尾。纯逻辑无外部依赖、4 个单测(跨 Push/短从句不断/ 长从句先吐/Flush 收尾)。 WS 会话 + 火山 ASR/TTS 客户端 + 控制面配置等到真 API 参数到手再按真形状做,不写猜测桩。 Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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package voice
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import (
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"reflect"
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"testing"
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)
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// 逐 token 喂入,句末标点成句、跨 Push 的半句能续上。
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func TestSentenceBuffer_SplitsAcrossPushes(t *testing.T) {
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b := NewSentenceBuffer()
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var got []string
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// 模拟 token 流一个字一个字来
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for _, tok := range []string{"帮", "你", "查", "一下", "天气", "。", "今天", "晴", ",", "气温二十五度", "。"} {
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got = append(got, b.Push(tok)...)
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}
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got = append(got, nonEmpty(b.Flush())...)
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want := []string{"帮你查一下天气。", "今天晴,气温二十五度。"}
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if !reflect.DeepEqual(got, want) {
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t.Fatalf("got %v want %v", got, want)
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}
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}
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// 从句标点:够长才断(短逗号不单吐,攒进句末标点成一句)。
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func TestSentenceBuffer_ShortClauseNotSplit(t *testing.T) {
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b := NewSentenceBuffer()
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out := b.Push("你好,") // 3 rune < 12 阈值,不该断
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if len(out) != 0 {
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t.Fatalf("短从句不该断句,得 %v", out)
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}
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out = append(out, b.Push("在。")...) // 到句末标点 → 整句吐
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if len(out) != 1 || out[0] != "你好,在。" {
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t.Fatalf("短从句应攒到句末再吐,得 %v", out)
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}
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}
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// 长从句:够长即在逗号处先吐,让长回答尽早出声。
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func TestSentenceBuffer_LongClauseSplits(t *testing.T) {
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b := NewSentenceBuffer()
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out := b.Push("关于人工智能在医疗领域的应用,")
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if len(out) != 1 {
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t.Fatalf("长从句应在逗号处先吐一段,得 %v", out)
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}
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}
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// Flush 收尾:模型没给句末标点也要把剩余吐出。
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func TestSentenceBuffer_FlushRemainder(t *testing.T) {
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b := NewSentenceBuffer()
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b.Push("这是没有标点的结尾")
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if s := b.Flush(); s != "这是没有标点的结尾" {
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t.Fatalf("Flush 应吐出剩余,得 %q", s)
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}
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if s := b.Flush(); s != "" {
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t.Fatalf("再 Flush 应为空,得 %q", s)
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}
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}
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func nonEmpty(s string) []string {
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if s == "" {
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return nil
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}
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return []string{s}
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}
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