Question: I need a tool that can convert written text into natural-sounding speech for my marketing campaign.

If you're looking for a tool to turn written text into natural-sounding speech for your marketing project, Verbatik is a good option. The service uses machine learning technology to generate speech in more than 600 realistic voices in 142 languages and accents. It has features like instant conversion, customizable voices, the ability to download audio and commercial use rights. Verbatik can be used for marketing and other purposes, and it's got a 3-day free trial. There are several pricing tiers depending on your needs.

Another option is Narration Box, an AI-powered text-to-speech tool that generates high-quality voiceovers in 140+ languages and accents. It's got an intuitive interface, a library of 700+ AI narrators and advanced controls for voice inflection, rate and pitch. You can also customize pronunciation and add pauses and breaks. Narration Box offers flexible pricing options, including a free tier, so it's good for marketing and other uses.

BeyondWords is another powerful tool that can handle a range of content, including articles and newsletters. It's got more than 550 AI voices in 140 languages, and features like voice cloning and automatic SSML normalization. The service offers a full suite of tools for creating, distributing and monetizing audio content, so it's good for boosting engagement and revenue from audio.

If you want a more complete tool, LOVO has 500+ voices in 100 languages and is good for creating videos with realistic voiceovers. It's got tools for voice generation, audio and video editing and AI script writing. LOVO has several pricing tiers, including a free option, so it's good for businesses, content creators and individuals who want to improve their content with high-quality audio.