Update ultravox_processing.py

ultravox_processing.py

@@ -149,7 +149,7 @@ class UltravoxProcessor(transformers.ProcessorMixin):
                 audio,
                 sampling_rate=sampling_rate,
                 padding="longest",
-                max_length=audio_len,
+                max_length=max(audio_len),
                 return_attention_mask=True,
                 **kwargs,
             )