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fix(matrix-tts-bot): use /synthesize/auto endpoint for German voices

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The /synthesize/piper endpoint doesn't exist - use /synthesize/auto
which automatically routes to the correct TTS backend based on voice.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
Till-JS 2026-02-14 11:30:37 +01:00
parent 2521a1ea73
commit 67f3d3020a
1 changed files with 5 additions and 8 deletions
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13
services/matrix-tts-bot/src/tts/tts.service.ts
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@ -182,23 +182,20 @@ export class TtsService {
}
/**
* Synthesize using Piper (German voices)
* Synthesize using auto endpoint (German voices via Piper/Edge)
*/
private async synthesizeGerman(
text: string,
voice: string = DEFAULT_GERMAN_VOICE,
speed: number = 1.0
): Promise<Buffer> {
const url = `${this.ttsUrl}/synthesize/piper`;
const url = `${this.ttsUrl}/synthesize/auto`;
// Map voice to valid German voice
const germanVoice = GERMAN_VOICES[voice] || DEFAULT_GERMAN_VOICE;
// Piper uses length_scale (inverse of speed)
const lengthScale = 1.0 / speed;
this.logger.debug(
`Piper synthesizing: "${text.substring(0, 50)}..." with voice=${germanVoice}, lengthScale=${lengthScale}`
`German synthesizing: "${text.substring(0, 50)}..." with voice=${germanVoice}, speed=${speed}`
);
const headers: Record<string, string> = { 'Content-Type': 'application/json' };
@ -212,14 +209,14 @@ export class TtsService {
body: JSON.stringify({
text,
voice: germanVoice,
length_scale: lengthScale,
speed,
output_format: 'wav',
}),
});
if (!response.ok) {
const errorText = await response.text();
this.logger.error(`Piper TTS failed: ${response.status} - ${errorText}`);
this.logger.error(`German TTS failed: ${response.status} - ${errorText}`);
throw new Error(`TTS synthesis failed: ${response.status}`);
}