Is my speech sent to a server?

Speech recognition uses your browser's built-in Web Speech API. Depending on your browser, recognition may be performed by your device or by the browser vendor's service — no third-party account is required.

Which languages are supported?

Mandarin Chinese (zh-CN) and English (en-US) are selectable. Browser support varies — Chrome and Edge have the best support.

Can I save the transcript?

Yes. Copy the text with one click or download it as a .txt file.

返回 Ercc

语音转文字

开口说话，文字实时呈现。支持中文与英文。

No Upload Required Lossless Output Instant Download PCM 16-bit WAV

Click start and speak — your words appear here in real time.

Uses the browser built-in speech recognition (Chrome / Edge recommended). Microphone permission is required.

How It Works

Three simple steps —everything happens in your browser.

Upload MP3 file

Drag and drop or click to select your MP3 audio file from your device.

Convert to WAV

Your MP3 is decoded and re-encoded as uncompressed PCM 16-bit WAV audio instantly.

Download WAV

Download your lossless WAV file immediately. No quality loss, no waiting.

为什么使用 Ercc 语音转文字？

100% Private —No Server Uploads

Your audio files never leave your device. All conversion uses the Web Audio API locally in your browser.

Lossless WAV Output

Get uncompressed PCM 16-bit WAV audio —perfect for professional editing, mixing, and mastering.

Universal Compatibility

WAV is supported by virtually every audio editor, DAW, and media player on all platforms.

Instant Conversion

No waiting for server processing. Your MP3 is decoded and converted to WAV right in your browser.

Frequently Asked Questions

Is my MP3 file uploaded to a server?

No. All conversion happens 100% in your browser using the Web Audio API. Your file never leaves your device, ensuring complete privacy and security.

What quality is the WAV output?

The output is uncompressed PCM 16-bit WAV at the original sample rate of your MP3 file. No quality is lost during the conversion process.

Why are WAV files so much larger than MP3?

WAV stores raw uncompressed audio data, while MP3 uses lossy compression. A typical MP3 is about 10% the size of its WAV equivalent. The trade-off is perfect audio fidelity.