Voice Changer
Convert your voice with built-in voices or a reference audio using AI
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View My CreationsDia TTS Voice Changer — Change Voices in Audio Online
Dia TTS is a browser-based voice changer that converts the voice in an existing recording into another voice. Upload your source audio, then choose a built-in voice or provide a recording of your own voice—or another voice you have explicit permission to use—as the target. Unlike a text-to-speech generator, the voice changer starts with recorded speech rather than a written script. The source recording provides the spoken content and performance for the conversion. Results may vary depending on recording clarity, background noise, speaking style, and the selected target voice. The current tool processes uploaded audio files. It is not a real-time microphone, gaming, phone call, or Discord voice changer.
See It in Action
A real result generated with Dia TTS.
Input
Output
Why Use the Dia TTS Voice Changer
Choose a target from the built-in voice options or upload an authorized reference recording. Built-in voices make it easy to test male and female voices in a range of vocal styles. Reference Audio mode is designed for custom voice conversion using your own voice or a voice you have explicit permission to use.
This is an audio-to-audio, voice-to-voice workflow. You do not need to retype or transcribe the words in your recording. Upload the existing speech, select the target voice, and use the source audio as the content and performance input for the conversion.
Source audio can be uploaded in MP3, OGG, WAV, M4A, or AAC format. A source file can be up to 50MB and 10 minutes long. Reference audio supports the same formats and can be up to 10MB and 60 seconds long. The current upload limits are also shown in the editor.
There is no software to download or install. Upload your audio, choose a voice, and submit the conversion from your browser. When the result is ready, you can preview and download it online. New users can sign up and use complimentary credits to try the service. Estimated credit usage is based on source-audio duration and the selected conversion mode.
How to Change a Voice in Audio Online
Upload Clear Source Audio
Upload the recording whose voice you want to change. For more consistent results, use audio with clear speech, one main speaker, and reasonably stable volume.
- •Upload an MP3, OGG, WAV, M4A, or AAC file
- •Use a file no larger than 50MB
- •Use a recording no longer than 10 minutes
- •Minimize background music, environmental noise, and echo
- •Avoid overlapping speakers and frequent interruptions
- •Remove long sections of silence that are unrelated to the speech
Choose the Target Voice
Select either Built-In Voice or Reference Audio mode. Built-In Voice mode lets you browse the voices currently available in the editor and compare male and female voices with different delivery styles. Reference Audio mode lets you upload a short recording of the target voice. The reference should contain one main speaker and must be no larger than 10MB or longer than 60 seconds. Only upload your own voice or a voice you have explicit permission to use.
Generate, Preview, and Download
Review the source audio and target voice, then start the conversion. When processing is complete, preview the result in your browser and download the generated audio. If the first result does not meet your expectations, try a clearer source recording, choose another built-in voice, or provide a cleaner and more natural reference sample. Voice conversion results can vary, and an exact match to the target voice is not guaranteed.
Who Uses the Dia TTS Voice Changer
Dia TTS helps creators, educators, and teams convert the voice in existing recordings without requiring a new written script or another complete recording session.
Video Voiceovers and Social Content
Convert an existing voiceover into a different voice for video drafts, short-form content, product demonstrations, and social media. The current page accepts audio files rather than video uploads.
Podcasts and Spoken Content
Try different voices for podcast segments, spoken articles, show introductions, and stories. Record the original performance once, then compare how it sounds with different target voices.
Training and Product Explanations
Create alternative audio versions for training materials, product demonstrations, and internal instructions using your own voice or an authorized instructor, employee, or brand voice.
Characters and Creative Prototypes
Prototype character voices for stories, games, animation, and other creative projects. Test different directions with built-in voices or reference recordings that you have permission to use before arranging a final performance.