Introduction The 52-hertz whale is a mysterious creature that continues calling at a frequency unlike any other whale. In 1992, the U.S. Navy’s underwater acoustic surveillance system (SOSUS) discovered a whale that calls at a distinctive frequency of 52Hz, much higher than typical blue whales (15-25Hz) or fin whales (around 20Hz). Known as “the world’s loneliest whale,” it has influenced marine biologists, acousticians, filmmakers, and writers alike. Does the 52Hz whale really exist? Is it truly lonely? I decided to investigate. ...

1. Introduction AI evolution is penetrating our lives and business at an unprecedented speed. The competition is fierce with OpenAI’s ChatGPT and Google’s Gemini. The field of “speech synthesis” that generates voice from text has also achieved remarkable development alongside generative AI innovation. This article summarizes Google’s recently released Gemini 2.5 TTS, OpenAI TTS, and the long-popular VoiceVox’s Zundamon. Name Release Date Main Features Zundamon June 2021 (VOICEVOX) ・Free & commercial use (VOICEVOX) ・Brother character of Tohoku Zunko ・Rich character art and MMD materials OpenAI TTS November 6, 2023 (OpenAI Dev Day) ・Realistic synthetic voice (6 types) ・Integrated text-to-speech conversion ・Voice personality & emotion expression possible Gemini 2.5 Pro March 25, 2025 (Experimental) May 6, 2025 (Preview) ・Google’s cutting-edge AI model ・Advanced reasoning & coding capabilities ・Multimodal support (text, voice, image, video) 2. Audio Output Test Seeing is believing, but hearing is even better. I’ve generated some outputs, so please listen. ...

Voice Range Online is a free web app that lets you easily measure and visualize your vocal range — no installation or account required! 🎙️ Voice Recording & Pitch Detection With a single click, record your voice and detect its pitch (F0, fundamental frequency). Lower voices have lower F0, while higher voices have higher F0. Although typical ranges exist for male and female voices, some people have a much wider range. This app uses the pYIN (probabilistic YIN) algorithm, a high-precision pitch estimation method based on a probabilistic model, improving on the original YIN technique. ...

Voice Studio Online is an online voice studio that lets you easily record audio in your browser and apply 10 different creative effects — no downloads or sign-ups required! 🎙️ Key Features 📹 Voice Recording Record high-quality audio with a single click. Voice from your microphone is digitized in real-time and processed within your browser. 🎭 10 Different Effects 1. Reverse Completely reverses the audio on the time axis. ...

Voice Reverser Online is a fun web app that lets you easily record and apply effects to your voice right in the browser — no downloads or sign-ups required! Here’s what it looks like: 🎤 Voice Recording You can record your voice with a single click. Sound is a vibration that travels through the air. When a person speaks, their voice creates these vibrations, which can be captured as digital data by a microphone on your computer or phone. For example, if you say “Nice to meet you,” the sound can be visualized like this: ...