Modulate has announced new investments from Twilio Ventures and Kayak co-founder Paul English as it expands the technology businesses can use to identify synthetic callers and supervise AI voice agents. The company says its latest models can identify an AI-generated voice in a median of 1.6 seconds, down from 2.25 seconds, while maintaining detection accuracy above 99.1% on its real-world AI and human call evaluation. The investment follows Modulate’s $25 million financing announced in…