--- name: elevenlabs-core-workflow-b description: | Implement ElevenLabs speech-to-speech, sound effects, audio isolation, and speech-to-text. Use when converting one voice to another, generating sound effects from a text description, removing background noise from a recording, or transcribing audio. Trigger with "elevenlabs speech to speech", "voice changer", "sound effects", "audio isolation", "remove background noise", "elevenlabs transcribe". allowed-tools: Read, Write, Bash(npm:*), Bash(curl:*) version: 1.6.0 license: MIT author: Jeremy Longshore tags: - saas - voice - ai - elevenlabs - speech-to-speech - sound-effects - audio-isolation compatibility: Designed for Claude Code --- # ElevenLabs Core Workflow B — Speech-to-Speech, Sound Effects & Audio Isolation ## Overview Secondary ElevenLabs workflows beyond TTS: (1) Speech-to-Speech voice conversion, (2) Sound Effects generation from text descriptions, (3) Audio Isolation for noise removal, and (4) Speech-to-Text transcription. Each maps to one API endpoint and has both a TypeScript SDK and a cURL path. Full code for every step lives in [references/implementation.md](references/implementation.md); copy-ready invocations are in [references/examples.md](references/examples.md). ## Prerequisites - Completed `elevenlabs-install-auth` setup. - For STS: source audio file in MP3/WAV/M4A format. - For audio isolation: noisy audio file to clean. ## Authentication The SDK client (`new ElevenLabsClient()`) reads the API key from the `ELEVENLABS_API_KEY` environment variable automatically — never hardcode it. cURL requests send it as the `xi-api-key: ${ELEVENLABS_API_KEY}` header. Full auth setup is covered by the `elevenlabs-install-auth` skill. ## Instructions Import the SDK once, then call the relevant module. The client authenticates from the environment: ```typescript import { ElevenLabsClient } from "@elevenlabs/elevenlabs-js"; import { createReadStream, createWriteStream } from "fs"; import { Readable } from "stream"; import { pipeline } from "stream/promises"; const client = new ElevenLabsClient(); ``` 1. **Speech-to-Speech (voice changer)** — `client.speechToSpeech.convert(voiceId, …)` against `POST /v1/speech-to-speech/{voice_id}`. Use `model_id: "eleven_english_sts_v2"` and set `remove_background_noise: true` for built-in cleanup. 2. **Sound Effects** — `client.textToSoundEffects.convert({ text, … })` against `POST /v1/sound-generation`. Tune `duration_seconds` (0.5–30) and `prompt_influence` (0–1; higher follows the prompt more closely). 3. **Audio Isolation** — `client.audioIsolation.audioIsolation({ audio })` against `POST /v1/audio-isolation`, or the streaming variant for large files. 4. **Speech-to-Text** — `client.speechToText.convert({ audio, model_id: "scribe_v1" })` against `POST /v1/speech-to-text`; optionally enable `diarize` and word timestamps. Each returns an audio stream (steps 1–3) piped to disk, or a transcript object (step 4). See [references/implementation.md](references/implementation.md) for the complete helper functions and cURL equivalents. ### First example — Speech-to-Speech skeleton ```typescript async function speechToSpeech(sourceAudioPath, targetVoiceId, outputPath) { const audio = await client.speechToSpeech.convert(targetVoiceId, { audio: createReadStream(sourceAudioPath), model_id: "eleven_english_sts_v2", voice_settings: JSON.stringify({ stability: 0.5, similarity_boost: 0.8 }), remove_background_noise: true, }); await pipeline(Readable.fromWeb(audio as any), createWriteStream(outputPath)); } ``` ## API Endpoint Summary | Feature | Method | Endpoint | Billing | |---------|--------|----------|---------| | Speech-to-Speech | POST | `/v1/speech-to-speech/{voice_id}` | Per character | | Sound Effects | POST | `/v1/sound-generation` | Per generation | | Audio Isolation | POST | `/v1/audio-isolation` | 1,000 chars/min of audio | | Audio Isolation Stream | POST | `/v1/audio-isolation/stream` | 1,000 chars/min of audio | | Speech-to-Text | POST | `/v1/speech-to-text` | Per audio minute | ## Output - **Steps 1–3** write an audio file to the `outputPath` you pass and log a confirmation, e.g. `Voice-converted audio saved to converted.mp3` or `Clean audio saved to clean_interview.mp3`. - **Step 4** returns a transcript object: `result.text` holds the full transcription, and `result.words` (when present) carries word-level `{ start, end, text }` timestamps. - cURL paths stream the resulting audio directly to the `--output` file. ## Error Handling | Error | HTTP | Cause | Solution | |-------|------|-------|----------| | `model_can_not_do_voice_conversion` | 400 | Wrong model for STS | Use `eleven_english_sts_v2` | | `audio_too_short` | 400 | STS input under 1 second | Use longer audio clip | | `audio_too_long` | 400 | STS input over limit | Trim to under 5 minutes | | `invalid_sound_prompt` | 400 | Nonsensical SFX description | Write descriptive, specific prompts | | `file_too_large` | 413 | Audio isolation over 500MB | Compress or split the file | | `quota_exceeded` | 401 | Character/generation limit hit | Check usage dashboard | ## Examples Worked, copy-ready invocations for all four workflows — including the three sound-effect variants (rain, laser, seamless forest loop), the "Rachel" voice conversion, an audio-isolation clean-up, and a transcription with word timestamps — are in [references/examples.md](references/examples.md). A one-liner: ```typescript // Generate a 10-second rain sound effect, faithful to the prompt await generateSoundEffect( "Heavy rain on a tin roof with distant thunder", "rain.mp3", { duration: 10, promptInfluence: 0.6 } ); ``` ## Resources - [Full implementation walkthrough](references/implementation.md) — every step's SDK + cURL code, sound-effect tips, and audio-isolation limits. - [Worked examples](references/examples.md) — copy-ready invocations per workflow. - [Speech-to-Speech API](https://elevenlabs.io/docs/api-reference/speech-to-speech/convert) - [Sound Effects API](https://elevenlabs.io/docs/api-reference/text-to-sound-effects/convert) - [Audio Isolation API](https://elevenlabs.io/docs/api-reference/audio-isolation/convert) - [Speech-to-Text API](https://elevenlabs.io/docs/api-reference/speech-to-text/convert) ## Next Steps For common errors, see `elevenlabs-common-errors`. For SDK patterns, see `elevenlabs-sdk-patterns`. --- Source attribution: jeremylongshore Original project: https://github.com/jeremylongshore/claude-code-plugins-plus-skills/blob/ab85a061f7bcc039dac13ee193de7a4cd4388571/plugins/saas-packs/elevenlabs-pack/skills/elevenlabs-core-workflow-b/SKILL.md License: MIT License information: https://opensource.org/license/mit Original upstream instructions; downloaded from Mega AI Hub. ## Upstream license notice MIT License Copyright (c) 2025 Jeremy Longshore Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # Mega AI Hub resource metadata Creator / publisher: jeremylongshore Original project: https://github.com/jeremylongshore/claude-code-plugins-plus-skills/blob/ab85a061f7bcc039dac13ee193de7a4cd4388571/plugins/saas-packs/elevenlabs-pack/skills/elevenlabs-core-workflow-b/SKILL.md Attribution basis: Source repository record Fields of work: Content & Media, Marketing Roles: Content Marketer, Influencer Marketer, Social Media Manager, Video Producer Specialties: API, Design, Word Documents, Frontend, Testing Tools: ElevenLabs Country applicability: Country not specified Classification basis: Source catalog labels Instruction SHA-256: f386dab80ec6efcc51dfd0500806c8ab0a11eebe9e6219004eb205c03a331d63