ZONOS2 Voice Clone (Emotion)

Clone a voice from a native ComfyUI AUDIO input without reference text.

By shiwano·Created 17 days ago·Updated 6 days ago· 0

zonos2_model
reference_audio

audio

◄textHello! This is ZONOS2 running natively inside ComfyUI.►

◄clean_speaker_backgroundfalse►

◄accurate_modetrue►

◄max_new_tokens1024►

◄temperature1.15►

◄top_k106►

◄top_p0.00►

◄min_p0.18►

◄repetition_window50►

◄repetition_penalty1.20►

◄repetition_codebooks8►

◄speaking_ratedefault►

◄loudness_lufsdefault►

◄estimated_snrdefault►

◄maximum_pausedefault►

◄estimated_bandlimit_hzdefault►

◄leading_silencedefault►

◄trailing_silence3: 0.25-0.5►

◄seed0►

◄emotionnone►

◄emotion_strength1.00►

◄emotion_valence0.00►

◄emotion_arousal0.00►

◄emotion_cfg_scale1.00►

CategoryZONOS2 TTS (Emotion)

Inputs (26)

Name	Type	Default	Description
zonos2_model	ZONOS2_MODEL		Connect the zonos2_model output from ZONOS2 Model Loader.
text	STRING	Hello! This is ZONOS2 running natively inside ComfyUI.	UTF-8 text to synthesize.
reference_audio	AUDIO		Reference voice AUDIO noodle. 5-30 seconds of clear, single-speaker speech is recommended. Use a sample that clearly demonstrates the accent you want, with little silence, music, or reverb. Audio longer than 60 seconds is clipped to the first 60 seconds with a CLI warning.
clean_speaker_background	BOOLEAN	false	Official ZONOS2 clean/noisy conditioning flag. Leave disabled for ordinary recordings or any audible room tone, noise, reverb, or ambience. Enable only for genuinely clean studio-like speech.
accurate_mode	BOOLEAN	true	Enable the official ZONOS2 accurate-cloning token for stricter speaker-embedding adherence. It can improve identity matching, but it does not guarantee transfer of accent, cadence, emotion, or other prosody. Disable for looser, potentially more expressive conditioning.
max_new_tokens	INT	102432–6000	Maximum DAC-code frames the model may generate. More frames allow longer speech but increase generation time and KV-cache memory. Generation can stop earlier when ZONOS2 emits end-of-audio.
temperature	FLOAT	1.150–2	Sampling randomness. Lower values are steadier; higher values add variation but can reduce clarity. 0 uses greedy sampling. The official ZONOS2 default is 1.15.
top_k	INT	1060–1026	Keep only the K most likely tokens in each audio codebook before sampling. 0 disables Top-K filtering. The official default is 106.
top_p	FLOAT	0.000–1	Keep the smallest token set whose combined probability reaches this value. 0 disables Top-P filtering. ZONOS2 normally uses Min-P instead.
min_p	FLOAT	0.180–1	Remove tokens whose probability is below this fraction of the most likely token. 0 disables Min-P. The official default is 0.18.
repetition_window	INT	500–512	Number of recent generated frames checked for repeated audio tokens. 0 disables repetition tracking.
repetition_penalty	FLOAT	1.201–2	Reduces the probability of recently generated tokens to discourage loops. 1.0 disables the penalty. The official default is 1.2.
repetition_codebooks	INT	8-1–9	Apply repetition penalty to this many codebooks starting from codebook 0. -1 applies it to all 9; 0 disables it for every codebook. The official default is 8.
speaking_rate	COMBO	default	Optional ZONOS2 speaking-rate conditioning in cleaned UTF-8 bytes per second. Lower ranges generally produce slower speech. Default leaves speaking rate unconditioned.
loudness_lufs	COMBO	default	Optional target integrated loudness in LUFS. More-negative ranges are quieter; less-negative ranges are louder. Default leaves loudness unconditioned.
estimated_snr	COMBO	default	Optional estimated signal-to-noise ratio in dB. Higher ranges bias toward cleaner audio; lower ranges can reproduce noisier recording characteristics. Default leaves SNR unconditioned.
maximum_pause	COMBO	default	Optional maximum internal pause duration in seconds. Lower ranges favor tighter delivery; higher ranges permit longer pauses. Default leaves maximum pause unconditioned.
estimated_bandlimit_hz	COMBO	default	Optional estimated recording bandlimit in Hz. Higher ranges bias toward wider-band, brighter audio; lower ranges can sound more bandwidth-limited. Default leaves bandlimit unconditioned.
leading_silence	COMBO	default	Optional amount of silence before speech begins. Default leaves leading silence unconditioned.
trailing_silence	COMBO	3: 0.25-0.5	Requested silence after speech ends. Bucket 3 (0.25-0.5 seconds) is the official ZONOS2 default. Select default to leave it unconditioned.
seed	INT	00–9223372036854776000	Sampling seed. A positive value makes generation repeatable for identical inputs and settings. 0 uses the current random state.
emotion	COMBO	none	Official ZONOS2 emotion direction added to the speaker vector after the model projects it. Speaker identity is preserved and only delivery shifts. Select none to leave conditioning untouched, which reproduces the output of a build without emotion support.
emotion_strength	FLOAT	1.000–3	Multiplier on top of the strengths ZONOS2 calibrated for each direction (3.0 for most, 4.0 for surprised), so 1.0 already gives the intended amount. Raise it for a stronger reading; large values distort the voice. 0 disables emotion.
emotion_valence	FLOAT	0.00-1–1	Continuous affect axis mixed in alongside the selected emotion. Negative is unpleasant, positive is pleasant, 0 leaves the axis unused.
emotion_arousal	FLOAT	0.00-1–1	Continuous affect axis mixed in alongside the selected emotion. Negative is calm, positive is excited, 0 leaves the axis unused.
emotion_cfg_scale	FLOAT	1.001–3	Official ZONOS2 emotion classifier-free guidance. 1.0 disables it. Above 1.0 the model also generates an unguided twin and amplifies the difference, which strengthens the emotion at roughly double the generation time. Upstream recommends 1.5 with accurate_mode disabled.

Outputs (1)

Name	Type	Description
audio	AUDIO	Voice-cloned mono speech as native ComfyUI AUDIO at 44.1 kHz.