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⚡ perf: optimize speech synthesis voice lookup by caching preferred voice #2

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⚡ perf: optimize speech synthesis voice lookup by caching preferred voice #2

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21 changes: 14 additions & 7 deletions src/components/layout/ChatInterface.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -11,6 +11,7 @@ function useSpeechSynthesis() {
const [isMuted, setIsMuted] = useState(false)
const synth = typeof window !== 'undefined' ? window.speechSynthesis : null
const { setIsSpeaking } = useAppStore()
const cachedVoiceRef = useRef<SpeechSynthesisVoice | null>(null)

const speak = (text: string) => {
if (isMuted || !synth) return
Expand All @@ -20,16 +21,22 @@ function useSpeechSynthesis() {

const utterance = new SpeechSynthesisUtterance(text)

// Try to find an English robotic/male voice, fallback to any available english voice
const voices = synth.getVoices()
let preferredVoice = voices.find(v => v.name.includes('Google UK English Male') || v.name.includes('Daniel') || v.name.includes('Male') || v.name.toLowerCase().includes('jarvis'))
if (!cachedVoiceRef.current) {
// Try to find an English robotic/male voice, fallback to any available english voice
const voices = synth.getVoices()
let preferredVoice = voices.find(v => v.name.includes('Google UK English Male') || v.name.includes('Daniel') || v.name.includes('Male') || v.name.toLowerCase().includes('jarvis'))

if (!preferredVoice) {
preferredVoice = voices.find(v => v.lang.startsWith('en'))
if (!preferredVoice) {
preferredVoice = voices.find(v => v.lang.startsWith('en'))
}

if (preferredVoice) {
cachedVoiceRef.current = preferredVoice
}
}

if (preferredVoice) {
utterance.voice = preferredVoice
if (cachedVoiceRef.current) {
utterance.voice = cachedVoiceRef.current
}

utterance.pitch = 0.8 // Slightly deeper
Expand Down