Audio Speech Alignment Data

Appen delivers human‑validated datasets across six domains—alignment, agentic AI, speech/audio, multimodal, physical, and model integrity—using automation and a global workforce of 1 million+ contributors. SOC 2/ISO 27001 certified, it supports large‑scale AI training and independent evaluation.

AIxBlock supplies enterprise-grade speech and language training data—voice, audio and text across 100+ languages—offering licensed catalogs, custom collections, transcription/annotation, RLHF and dialogue datasets, plus self-hosted storage options for data sovereignty.

The Speak AI tool is a language data analysis and research platform with transcription, data analysis, and sentiment analysis capabilities for various types of media.

AssemblyAI offers real‑time and batch speech‑to‑text transcription across 99+ languages, featuring speaker diarization, sentiment analysis, and language identification. It supports medical terminology, PII redaction, and custom prompts for precise conversational insights.

devAIce® extracts over 7,000 acoustic parameters via its SDK, Web API, and Unity/Unreal plug‑ins, delivering real‑time voice‑expression analytics for XR, automotive, robotics, and healthcare. It supports stress and health biomarker detection, emotion‑aware interfaces, and GDPR‑compliant data handlin

AnySpeech.io is an AI voice studio offering 100+ multilingual, style-controlled voices for content creation. It generates export-ready audio for videos, podcasts, and e-learning to save production time and ensure consistent quality.

ElevenCreative is an AI tool that generates ultra-realistic speech, videos, music, and sound effects, offering text-to-speech, voice cloning, and a library of pre-recorded voices for creating personalized content for various applications.

Generates synchronized lip movements for videos and AI avatars from uploaded or linked video and audio, offering Standard and Precision modes, multi‑speaker support (up to six faces), cross‑language mouth-shape mapping, preview/adjust controls, and exportable outputs.

Fish Audio S2 delivers real‑time text‑to‑speech with fine‑grained emotional tags and voice cloning from 15 seconds of audio. Its low‑latency API, SDKs, and multilingual support enable developers to create studio‑quality narration, dialogues, and voice agents.

Cleanvoice AI automates podcast post‑production by removing background noise, filler words, pauses, mouth sounds, and breath artifacts in 20+ languages. It offers transcription, summaries, show notes, chapter markers, multi‑track editing, a drag‑and‑drop interface, and an API for batch processing.

LALAL.AI isolates vocals, drums, bass, piano, guitar, synth, and other stems from audio files. It provides vocal removal, noise suppression, echo removal, lead/back splits, voice change, cloning, batch processing, API, and VST integration for producers and engineers.

Audiopod AI is a platform for voice and audio processing, offering speaker separation, AI dubbing, high-quality stem separation, and noise reduction, making it suitable for content creators, podcasters, and educators to enhance audio quality.

Audio Transcriber AI is a browser-based tool that converts audio and video files into timestamped, speaker-labeled text. It supports major formats, large uploads up to 5 GB, automatic language recognition for 120+ languages, and includes TikTok MP3 conversion and YouTube audio extraction.

AiVOOV converts scripts into realistic audio in seconds, offering 2,300+ voices across 155+ languages. Features include customizable pauses, tone, automatic subtitle generation, and audio merging, suitable for videos, podcasts, e‑learning, IVR, and marketing.

A2E.ai is a cutting-edge AI platform that generates lifelike avatars and videos with lip-sync, voice cloning, and multilingual text-to-video capabilities. It delivers high-quality, fast results with API integration for seamless application embedding.

Lip Sync AI is a web-based generator that converts photos or video plus audio into synchronized talking head videos by mapping audio phonemes to visemes, preserving facial identity, offering resolution choices, multilingual support, and downloadable MP4 exports.

Ai‑Spy analyzes MP3/WAV files to distinguish human from AI‑generated speech. It offers drag‑and‑drop uploads or link input, instant authenticity scores, word‑level breakdowns, exportable reports, and a SOC 2‑certified API for workflow integration.

Resemble AI delivers real‑time voice conversion and cloning from brief samples, supports 149+ languages, lets users edit audio via text, and includes deep‑fake detection, watermarking, and API integration for secure, ethical use.

SAM Audio uses Meta’s Segment Anything Audio Model to isolate vocals, instruments, speech and effects from mixes via multimodal prompts (text, visual, time-span). It produces target and residual stems at original sample rates for production, post, and research.

Audo Studio is an AI audio tool that offers one-click audio cleaning features for podcasts, YouTube videos, and other audio content. It removes background noise, enhances speech, and uses advanced processing to clean audio in seconds.

AudioConvertis a free AI tool that instantly transcribes audio files like mp3 and wav into text. It automatically identifies different speakers and provides timestamped transcripts for export.

Voice‑Swap trains custom singing‑voice models and provides a VST plugin and API for any digital audio workstation. It enables stem‑swap, remote collaboration, watermarking, and safe‑content screening, allowing studio‑free demo creation and community sharing.

LipSync Studio is an AI tool for creating lip-sync animations, supporting multiple languages for humans, cartoons, and animals. It offers features like natural speech synchronization, multi-character dialogues, and image-mask uploads for precise dialogue targeting.

Music AI offers AI‑driven stem separation, voice swapping, and instrumental tracks, along with lyric transcription and metadata extraction. AI mixing/mastering sharpens clarity, while the SDK supports volume control for production workflows across web, desktop, VST, iOS, and Android.

Speechlab automates speech‑to‑speech translation, enabling bulk video/audio dubbing across 20+ languages. It offers real‑time interpretation with sub‑3‑second latency, API integration, role‑based collaboration, fine‑tuned voice synthesis, and seamless workflow.

aiclonevoicefree.com is a free AI voice cloning tool that generates realistic podcasts by uploading short audio samples (5-30s) and converting text into cloned speech. It supports multiple formats, cross-language synthesis, and offers pitch/speed adjustments with preview and download options.

Voice Lab AI is a text-to-speech and voice cloning tool that generates realistic, expressive voices for audiobooks, voiceovers, and narration. It offers multilingual support, tonal nuance, and robust data security features like encryption and access controls.

AudioBot converts written text to natural‑sounding MP3 audio using over 500 AI voices in multiple languages, including diverse Spanish accents. Users can tweak pitch, speed, and tone, making it useful for video, podcasts, and accessibility.

OptimizerAI generates up to 60‑second stereo audio at 44.1 kHz from text or magic prompts. It supports style selection, audio modification, and batch creation, producing files compatible with game engines, video editors, and media workflows.

FlowSpeech is a text-to-speech studio that generates human-like, context-aware speech with emotion and pause controls. It automates multi-speaker projects and tone tagging for audiobooks, voiceovers, and podcasts from various document formats.

Deepgram Voice AI offers real‑time and batch speech‑to‑text, text‑to‑speech, and voice‑agent APIs. It delivers low‑latency transcripts, natural‑sounding synthesis, and integrated conversation handling for contact centers, transcription, and podcasts, with cloud, on‑prem, and telephony support.

SpeechGen.io converts up to 2 million characters into high‑quality neural‑voice audio across 150 languages with 5,000 models. It allows voice, speed, pitch, volume control, SSML tags, background music, multi‑speaker tagging, downloadable formats, and a REST API.

Audionotes AI tool for effortless voice-to-text conversion, organization, summarization, and content generation.

A web‑based Microsoft AI TTS tool offering 330+ neural voices in 129 languages. Users can adjust rate, pitch, pauses, and style for news, scripts, or narration. Works across Chrome, Firefox, Edge, with an API for web integration.

Natural AI Dubbing is a video creation platform that enables users to create, translate, and launch dubbed videos. It supports 32+ languages, features lip-sync technology, multi-speaker detection, and real-time script editing for seamless video localization.

Vbee Aivoice is an AI text-to-speech platform that converts text into natural-sounding audio across multiple languages. It offers various voices, supports voice cloning, and provides MP3/WAV output, ideal for podcasts, e-learning, and audiobooks.

Altered Studio provides real‑time voice morphing for calls and high‑quality post‑production editing, supporting low‑latency voice skins, accent translation, dysphonia restoration, and GPU‑accelerated workflows for precise editing and voice cloning.

Multilingual speech‑to‑text platform providing automated segmentation, speaker diarization, language ID, and text alignment. Outputs structured XML for searchable indexing of broadcasts and corporate recordings. Supports on‑premise and REST APIs with customizable models, enabling high‑accuracy trans

Voice.ai offers cloud‑and on‑prem AI voice agents for calls, scheduling, and queries, supporting 15+ languages. It provides text‑to‑speech, 10‑second voice cloning, real‑time voice change, noise filtering, and integrates with Salesforce, HubSpot, Zendesk, Slack. APIs and SDKs enable scalable deploym

Align AI is a user analytics tool for product teams, focusing on AI application conversational data. It provides real-time monitoring, data integration, and insights into user satisfaction, helping teams enhance products by detecting and resolving issues.

FreeTTS delivers browser‑based AI audio utilities: multilingual text‑to‑speech, accurate speech‑to‑text transcription, vocal isolation, voice enhancement, precise cut/join, and format conversion (MP3, WAV, FLAC, OGG, M4A). All processing is local and files auto‑delete after 12 hours.

AI Voice Detector identifies AI‑generated speech with up to 99 % accuracy. It analyzes MP3, WAV, OGG, M4A, MP4, MOV files up to 10 min by segmenting audio, applying voice‑activity detection, and deep‑learning scoring. Supports multiple languages, Chrome extension, desktop app, API.

seedaudio.co is a multimodal AI audio studio that transforms text, images, and reference clips into layered sound scenes with multi-speaker dialogue, ambient beds, and SFX. It preserves separate stems for each element, enabling seamless mixing and voice-consistent, session-length generation.

PlayAI turns text into natural‑sounding audio in 42+ languages using 800+ voices. Users adjust pitch, rate, volume, add SSML pronunciations, support multi‑speaker real‑time synthesis, voice cloning, and API integration for chatbots, streaming, IVR, e‑learning.

Audiotype transforms audio and video files into transcriptions and subtitles in 30 languages, automatically detecting speakers and adding punctuation. It supports MP3, MP4, WAV, FLAC, AVI, MOV, MKV and exports TXT, DOCX, PDF, SRT, VTT, with deleted after 15 days.

Online TTS platform converts text into audio in 100+ languages with 148+ AI voices. Users can tweak speed, pitch, pause, add background music, and download MP3, OGG, AAC, OPUS, or WAV for dubbing, audiobooks, and language learning.

AI tool for searching and playing movie/TV dialogue clips using keywords. Includes login, favorites, and download options.

Speechnotes is a web‑based speech‑to‑text tool for real‑time dictation and batch transcription in multiple languages. It offers speaker tagging, timestamps, subtitle export, and imports from Google Drive, YouTube, or local files. Export to text, markdown, PDF while preserving privacy.

Sarvam AI is a full-stack sovereign AI platform for India, offering multilingual models and APIs for text-to-speech, speech recognition, and translation across 12+ languages. It enables rapid integration for developers, enterprises, and government through REST APIs and Python SDKs, with flexible dep

Speech Illustrator converts spoken audio into real‑time images that reflect tone, emotion, and meaning. Supporting 90+ languages and multiple art styles, it works with Spotify, Audible, Apple Podcasts, microphones, and system output, enhancing learning and engagement.