Voice Effects: Robot, Alien and Chipmunk

About this voice effects: robot, alien and chipmunk

Apply robot, alien or chipmunk effects to local audio or a permitted microphone. Preview live, render files or record up to 30 seconds of microphone effects as WAV Processes streaming audio and video buffers directly in the browser using HTML5 Media and Web Audio APIs with zero server uploads.

Audio and video decoding pipeline

The execution engine processes input tokens and applies transformations in the browser sandbox. Specifically, Robot multiplies samples by a 30 Hz sine. Alien resamples +7 semitones, multiplies by a 55 Hz sine, then uses two serial +9 dB peaking filters at 800 and 1600 Hz (Q=4), with final gain 0.35. Chipmunk resamples +12 semitones. Linear interpolation is used for pitch; these are synthetic effects, not voice identity conversion or formant preservation. The older speed/pitch renderer below is retained. Choose the preset above. Play the selected file directly, or explicitly allow microphone access. Use headphones to avoid speaker feedback. Stop ends playback and releases the microphone; changing the file or preset also stops it. File preview uses native Web Audio playback rate, ring modulation and resonant filters; it does not create a download. Microphone pitch uses two overlapping 40 ms delay grains: +7 or +12 semitones, with unchanged stream duration and audible artifacts possible. Calculated grain read delay is 20–40 ms for Alien and 20–60 ms for Chipmunk at 48 kHz; this is not measured end-to-end latency. Robot adds no pitch grains. Browser, device and buffering add latency. Microphone requires permission and a secure context; Alien/Chipmunk microphone mode also requires AudioWorklet. These are synthetic effects, not voice identity conversion or formant preservation. Enable microphone preview and choose Start recording. Stop and save WAV ends recording and releases the microphone. The 30-second limit also saves and stops automatically. Monitor volume does not change the recording level. Recording requires AudioWorklet and a 48 kHz audio context. It captures processed mono audio for at most 30 seconds: PCM16 WAV, at most 2,880,044 bytes. Values beyond full scale are clipped. No metadata. Stop live preview, a file/preset change, or leaving the page discards an unfinished recording; starting another recording clears the previous download.

Worked media transformation example

Buffer duration & codec support limits

Both file inputs require nonempty audio smaller than 20 MB (20,000,000 bytes). The new presets decode at 48 kHz, support 1–8 channels and at most 8,000,000 decoded samples in total. Output is PCM16 WAV; clipping and quantization may occur. Pitch changes duration. Metadata is not retained. No metadata.

Audio and video rendering in Voice Effects: Robot, Alien and Chipmunk depends on browser hardware and supported media codecs. Verify playback compatibility on your target platforms.

In-memory audio-video processing boundary

File buffers and document assets in Voice Effects: Robot, Alien and Chipmunk are processed in-memory via local browser APIs with zero file uploads to CZOA servers.

HTML5 Media & Web Audio standards

W3C Web Audio API specifications and HTML5 media container standards:

• Finite sine ring modulation30Hz/55Hz; linear pitch resampling0/+7/+12semitones; serial RBJ peaking800/1600Hz Q4 +9dB; synthetic effects only
• Offline48kHz PCM16 WAV; strict nonempty<20000000bytes;<=8million decoded samples. Live file playback uses native rate/ring/peaking graph. Permissioned microphone uses ring/peaking and approximate2grain40ms pitch, calculated20–60ms read delay plus unmeasured device/browser latency. Explicit microphone recording captures processedmono PCM16 WAV at48kHz for<=30seconds/2880044bytes; monitor volume independent, unfinished captures cancel on source/preset/pagehide. No identity/formant preservation.

Voice Effects: Robot, Alien and Chipmunk verification · Audit standards

How to use it

1. Enter, paste, or select your input data into the Voice Effects: Robot, Alien and Chipmunk workspace controls.
2. Choose the preset above.
3. Click the action button or observe immediate live calculations rendered by Voice Effects: Robot, Alien and Chipmunk.